Questão 1
Questão
201. Which of the following OSPF protocol packets can ensure the reliability of LSA updates?
Questão 2
Questão
202. The last option field of IPv4 is variable-length optional information. What is the maximum length of
this field?
Questão 3
Questão
203. Which of the following advantages does router-on-a-stick achieve inter-VLAN routing intercommunication?
Responda
-
A. Reduce the number of equipment
-
B. Reduce the use of IP addresses
-
C. Reduce the number of link connections
-
D. Reduce routing table entries
Questão 4
Questão
204. If STP is not turned on for the network composed of switches, there must be a Layer 2 loop.
Questão 5
Questão
205. The switch receives a unicast data frame. If the destination MAC of the data frame can be found in the MAC table, the data frame will be forwarded from the corresponding MAC port.
Questão 6
Questão
206. The output information of the link aggregation port of a certain switch is as follows. If you want to delete Eth-Trunk 1, which of the following commands is correct?
Responda
-
A.undo interface Eth-trunk 1
-
B.inte GigabitEthernet 0./0/2
Undo eth-trunk
Quit
Undo interface eth-trunk 1
-
C.inte GigabitEthernet 0./0/1
Undo eth-trunk
Quit
inte GigabitEthernet 0./0/2
Undo eth-trunk
Quit
-
D.inte GigabitEthernet 0./0/1
Undo eth-trunk
Quit
Undo interface eth-trunk 1
Questão 7
Questão
208. If the value of the Type/Length field of an Ethernet data frame is 0 x 0800, the length of the upper layer message header carried by this data frame is in the range of 20-60B.
Questão 8
Questão
209. When using FTP for file transfer, how many TCP connections will be established?
Questão 9
Questão
210. What are the user authentication methods that can be deployed in wlan? (Multiple choice)
Responda
-
A. Portal authentication
-
B. MAC authentication
-
C. Radius certification
-
D. 802.1X authentication
Questão 10
Questão
211. Which of the following IEEE 802.11 standards support operation in the 5GHz frequency band? (Multiple choice)
Responda
-
A.802.11ac
-
B.802.11n
-
C.802.11g
-
D.802.11a
Questão 11
Questão
212. In order to join the wireless network STA needs to obtain wireless network information first. Which of the following messages is used by the STA to actively obtain the SSID information?
Responda
-
A.Probe
-
B.Join
-
C.Discovery
-
D.Beacon
Questão 12
Questão
213. Broadly speaking, which of the following does the transmission medium that constitutes the wireless local area network wlan not include?
Responda
-
A. Ray
-
B. Radio waves
-
C. Infrared
-
D. Laser
Questão 13
Questão
214. Which field of the ipv6 packet header can be used for QoS?
Responda
-
A.Traffic Class
-
B.Payload Length
-
C.Version
-
D.Next Header
Questão 14
Questão
215. Connection between switches and hosts, which port link type is often used by the switch?
Responda
-
A. Access link
-
B. Trunk link
-
C. Trunk link
-
D. Hybrid link
Questão 15
Questão
216. When using the FTP protocol to upgrade the router software, which of the following transmission mode should be selected?
Responda
-
A. Binary mode
-
B. Byte mode
-
C. Text mode
-
D. Stream byte mode
Questão 16
Questão
217. Network shown below, Host A does not configure the gateway, the host B exists gateway ARP cache, which of the following statements are correct?
Responda
-
A. Enable ARP proxy on the GO/0/1 port of the router, then host A can communicate with host B
-
B. Host A and Host B cannot communicate in both directions
-
C. The data packet sent by host B with the destination IP address of 10.0.12.1 can be forwarded to host A
-
D. The data packet sent by host A with the destination IP address of 11.0.12.1 can be forwarded to host B
Questão 17
Questão
218. The network structure and OSPF partition is shown in the following figure, in addition to RTA, router RTB, RTC and RTD are ABR routers.
Questão 18
Questão
219. The network administrator hopes to effectively use the IP address of the 192.168.176.0/25 network segment. Now that the company’s marketing department has 20 hosts, which of the following is the best address segments allocated to the marketing department?
Responda
-
A. 192.168.176.160/27
-
B. 192.168.176.0/25
-
C. 192.168.176.96/27
-
D. 192.168.176.48/29
Questão 19
Questão
220. What is the main function of the dynamic routing protocol?
Questão 20
Questão
221. The device port running STP protocol is in Forwarding state. Which of the following statements is correct?
Responda
-
A. The port not only forwards user traffic but also processes BPDU packets.
-
B. The port only receives and processes BPDUs, and does not forward user traffic.
-
C. The port will build a MAC address table based on the received user traffic, but does not forward user traffic.
-
D. The port not only does not process BPDU packets, but also does not forward user traffic
Questão 21
Questão
222. Which of the following descriptions about spanning tree designated ports is correct?
Responda
-
A. The designated port can forward configuration BPDU messages to the network segment connected to
it.
-
B. The port on the root switch must not be a designated port.
-
C. Each switch has only one designated port.
-
D. The port on the root switch must be a designated port
Questão 22
Questão
223. Which of the following statements about link aggregation is correct?
Responda
-
A. GE electrical interfaces and GE optical interfaces cannot be added to the same Eth-Trurnk interface.
-
B. Eth-Trurnk interfaces cannot be nested.
-
C. When two devices are connected, it is necessary to ensure that the link aggregation mode on both devices is the same.
-
D. GE interface and FE interface cannot be added to the same Eth-Trunk interface.
Questão 23
Questão
224. What is the total length of the VLAN frame format defined by IEEE802.1Q?
Questão 24
Questão
225. CSS refers to the combination of two switch devices that support cluster features and logically combine them into one switch device.
Questão 25
Questão
226. The host uses the IP address 192.168.1.2 to access the Internet, which must go through NAT.
Questão 26
Questão
227. Before the STA associates with the AP, it needs to exchange some messages to obtain the SSID. What are these messages?
Responda
-
A. Discovery
-
B. Beacon
-
C. Probe
-
D. ResponseProbe Request
Questão 27
Questão
228. Which of the following statement about MPLS Labe1 statement label is wrong?
Responda
-
A. The label is encapsulated between the network layer and the transport layer
-
B. The tags are carried by the head of the packet, does not contain topology Information
-
C. The label is used to uniquely identify the forwarding equivalence class FEC to which a packet belongs
-
D. The label is a short identifier with a fixed length. It has only local meaning
Questão 28
Questão
229. Which of the following refers to network communication? (Multiple choice)
Responda
-
A. Use instant messaging software (such as, QQ, WeChat) to chat with friends
-
B. Use a computer to visit the company's official website
-
C. Use computer to watch video online
-
D. Download emails from the company mailbox to your compute
Questão 29
Questão
230. In the VRP interface, use the command startup saved-configuration backup.cfg to configure the startup.cfg file for the next startup.
Questão 30
Questão
231. Which of the following fields does the ARP packet format include? (Multiple choice
Questão 31
Questão
232. Both pwd and dir commands in the VRP operating platform can view the file information under the current directory
Questão 32
Questão
233. The OSI reference model from high-level to bottom-level is ().
Responda
-
A. Application layer, transport layer, network layer, data link layer, physical layer
-
B. Application layer, session layer, presentation layer, transport layer, network layer, data link layer, physical layer
-
C. Application layer, presentation layer, session layer, network layer, transport layer, data link layer, physical layer
-
D. Application layer, presentation layer, session layer, transport layer, network layer, data link layer, physical layer
Questão 33
Questão
234. Which of the following attributes cannot be used as a parameter to measure Cost? (Multiple choice)
Responda
-
A. Bandwidth
-
B. Sysname
-
C. Delay
-
D. Hop count
Questão 34
Questão
235. A company applies for a Class C address segment, which needs to be evenly distributed to 8 subsidiaries. The largest subsidiary has 14 computers. Different subsidiaries must be in different network segments. The subnet mask should be designed as ().
Responda
-
A. 255.255.255.240
-
B. 255.255.255.128
-
C. 255.255.255.192
-
D. 255.255.255.0
Questão 35
Questão
236. The priority of the LACP protocol is shown in the figure. Switch A and Switch B adopt LACP mode link aggregation, and all interfaces join the link aggregation group. At the same time, set the maximumnumber of active ports to 3. Which interface of switch A is not active port?
Responda
-
A. G0/0/1
-
B. G0/0/3
-
C. G0/0/0
-
D. G0/0/2
Questão 36
Questão
237. If the Ethernet data frame Length/Type=0X0806, which of the following statement is correct?(Multiple choice)
Responda
-
A. The source MAC address of the data frame must not be FFFF-FFFF-FFFF
-
B. The data frame is an IEEE 802.3 frame
-
C. The data frame is an Ethernet II frame
-
D. The destination MAC address of the data frame may be FFFF-FFFF-FFFF
Questão 37
Questão
238. VLAN 4095 cannot be created on Huawei switches, and VLAN 1 cannot be created.
Questão 38
Questão
239. Which of the following port states is not included in the RSTP protocol?
Responda
-
A. Learning
-
B. Discarding
-
C. Forwarding
-
D. Blocking
Questão 39
Questão
240. Which statement about the Hybrid port is correct?
Responda
-
A. When the Hybrid port sends data frames, it must carry VLAN TAG
-
B. Hybrid port only receives data frames with VLAN TAG
-
C. Hybrid port can strip TAG of VLAN in the direction of the interface
-
D. Hybrid port does not require PVID
Questão 40
Questão
242. What are the advantages of using dynamic host configuration protocol DHCP to assign IP addresses?
(Multiple choice)
Responda
-
A. Heavy workload and difficult to manage
-
B. Reuse of IP address can be realized
-
C. Avoid IP address conflicts
-
D. When the configuration information changes (such as DNS), only the administrator needs to modify it on the DHCP server to facilitate unified management
Questão 41
Questão
243. The role of the collaboration layer in the SDN architecture is to complete job deployment based on user intentions. OpenStack belongs to the business collaboration layer
Questão 42
Questão
244. Which of the following statement about Python is incorrect?
Responda
-
A. Is a fully open source high-level programming language
-
B. Has a rich third-party library
-
C. Have a clear grammatical structure, simple and easy to learn, colleagues run efficiently
-
D. can be used for operation and maintenance of automation scripts, Artificial Intelligence, Data science
and many other fields
Questão 43
Questão
245. The administrator has configured the AR2200 as shown in the figure, then which of the following description of the configuration information is correct?
Responda
-
A. The saved configuration file will be replaced by the running configuration file
-
B. If the user wants to clear the next startup configuration file of the device configuration, then should
select "N"
-
C. If the user wants to clear the next startup configuration file of the device configuration, then should
select "Y"
-
D. The next startup file of the device configuration will be retained
Questão 44
Questão
246. When building a campus network, which of the following protocols can be used to avoid Layer 2 loops?
Responda
-
A.SNMP
-
B.RSTP
-
C.NAT
-
D.OSPF
Questão 45
Questão
247. The tree network topology is actually a hierarchical star structure, which is easy to expand the network scale, but the higher the level, the more serious the network problem caused by the node failure.
Questão 46
Questão
248. The routing table is shown in the figure. Which of the following statements is correct? (Multiple choice)
Responda
-
A. The router forwards data packets with the destination IP address 10.0.3.3 from Ethernet0/0/0
-
B. Router from Ethernet0/0/0 forwarding destination IP address 10.0.2.2 packet
-
C. The router forwards data packets with the destination IP address 10.0.12.1 from Ethernet0/0/0
-
D. The NextHop of the destination network 10.0.3.3/32 is not directly connected, so the router will not forward packets with the destination IP address of 10.0.3.3.
Questão 47
Questão
249. The network administrator uses Ping to test the connectivity of the network. Which of the following protocols may be used in this process? (Multiple choice)
Questão 48
Questão
250. The router needs to modify the destination IP address in the data packet when forwarding data packets
Questão 49
Questão
251. Which of the following description about DD packets and LSA of OSPF is correct? (Multiple choice)
Responda
-
A. The header of an LSA can uniquely identify an LSA
-
B. LSA header is only a small part of LSA
-
C. DD packet contains detailed information about LSA
-
D. The DD packet contains only LSA header information
Questão 50
Questão
252. Which of the following statement about the main functions of the router is wrong? (Multiple choice)
Responda
-
A. Realize the mutual communication between the same network disconnection equipment
-
B. Forwarding according to the source IP address of the received data packet
-
C. Establish routing tables through multiple protocols
-
D. Guide data forwarding according to the routing table
Questão 51
Questão
253. In the broadcast network as shown in the figure, OSPF runs on four routers in the same area and on the same network segment. OSPF will automatically elect one DR and multiple BDRs to achieve better backup results.
Questão 52
Questão
254. The Router ID of the OSPF process takes effect immediately after modification
Questão 53
Questão
255.How many types of OSPF messages are there?
Questão 54
Questão
256. In the network shown in the figure below, switch A and router A are connected through two links, and
the two links are aggregated in manual load sharing mode. The aggregated port number is 1, and the aggregated link performs data when forwarding, you need to carry VLAN TAG 100. Switch A uses Trunk link. Which of the following configurations should be used for Switch A?
Questão 55
Questão
257. By default, the port cost calculated by STP has a certain relationship with the port bandwidth, that is, the greater the bandwidth, the () the cost.
Responda
-
A. greater
-
B. Consistent
-
C. Not necessarily
-
D. smaller
Questão 56
Questão
258. Which of the following port states does the RSTP protocol include? (Multiple choice)
Responda
-
A.Learning
-
B.Discarding
-
C.Listening
-
D.Forwarding
Questão 57
Questão
259. In the RSTP standard, in order to improve the convergence speed, the port that the switch is directly connected to the terminal can be defined as ( ).
Responda
-
A. Edge port
-
B. Root port
-
C. Fast port
-
D. Backup por
Questão 58
Questão
260. The configuration information of a certain port of the switch is shown in the figure, then the port will strip off the VLAN TAG when sending data frames carrying which VLAN?
Responda
-
A.4.6
-
B.1.4.5.6
-
C.4.5.6
-
D.1.4.6
Questão 59
Questão
261. The Backup ports in RSTP may alternatively failed root port.
Questão 60
Questão
262. As shown in the figure, all four switches run STP, and various parameters adopt default values. If the G0/0/2 port of switch C is blocked and the configuration BPDU cannot be sent through this port, how long will it take for the blocked port in the network to enter the forwarding state?
Responda
-
A. about 3 seconds
-
B. about 50 seconds
-
C. about 30 seconds
-
D. about 15 seconds
Questão 61
Questão
263. If the largest number in an ACL rule is 12, by default, the user does not specify a number when configuring a new rule, then what is the number assigned by the system for the new rule?
Questão 62
Questão
264. Complete the ACL configuration shown in the figure on the router RTA, which of the following description is correct?
Responda
-
A. The VRP system will not adjust the sequence number, but will first match the rule permit source
20.1.1.0 0.0.0.255
-
B. Configuration error, the sequence number of the rules must be configured from small to large
-
C. The VRP system will adjust the sequence number of the first rule to 5 according to the configuration
sequence
-
D. The VRP system will first match the rule by numbering in sequence deny source 20.1.1.0 0.0.0.255
Questão 63
Questão
265. Using the ACL shown in the figure on the router RTA to match routing entries, which of the following entries will be matched? (Multiple choice)
Responda
-
A.172.16.1.0/24
-
B.192.17.0.0/24
-
C.172.18.0.0/16
-
D.172.16.1.1/32
Questão 64
Questão
266. The configuration information of a router is shown in the figure. Which of the following statements are correct? (Multiple choice)
Responda
-
A. The authentication method adopted by the domain with the domain name huawei is local ID
-
B. The authorization method for the domain with the domain name huawei is local authorization
-
C. Use the username huawei for authentication, the password needs to be 654321
-
D. The domain with the domain name huawei does not use the billing plan
Questão 65
Questão
267. What is the main function of the DNS protocol?
Questão 66
Questão
268. What is the data link layer MAC address of each VAP on the AP?
Responda
-
A.SSID
-
B.BSS
-
C.ESS
-
D.BSSID
Questão 67
Questão
269. Which of the following does not include the advantages of Wi-Fi 6 compared to Wi-Fi 5?
Responda
-
A. Higher bandwidth
-
B. Lower transmission delay
-
C. Higher power consumption
-
D. Higher number of access terminals per AP
Questão 68
Questão
270. PPPoE session can only use CHAP authentication
Questão 69
Questão
271. Which of the following types does IPv6 address contain? (Multiple choice)
Responda
-
A. Unicast address
-
B. Broadcast address
-
C. Multicast address
-
D. Anycast address
Questão 70
Questão
272. Regarding the IPv6 address 2031:0000:720C:0000:0000:09E0:839A:130B, which of the following
abbreviations is correct?
Responda
-
A.2031:0:720C:0:0:9E:839A:130B
-
B.2031:0:720C::9E0:839A:130B
-
C.2031:0:720C:0:0:9E0:839A:130B
-
D.2031::720C::9E0:839A:130B
Questão 71
Questão
273. Which of the following protocols does the RA message used by IPv6 stateless autoconfiguration belong to?
Responda
-
A.IGMPv6
-
B.ICMPv6
-
C.UDPv6
-
D.TCPv6
Questão 72
Questão
274. When planning the campus network, which of the following mask lengths is recommended for device interconnection IP addresses?
Questão 73
Questão
275. Which of the following are related to the purpose of encapsulation and decapsulation? (Multiple
choice)
Responda
-
A. Encapsulation and decapsulation are important steps to realize different protocol functions
-
B. Interworking between different networks
-
C. Shorten the length of the message
-
D. Encapsulation and decapsulation can complete network fault location
Questão 74
Questão
276. Which of the following statement about the transport layer protocol is correct? (Multiple choice)
Responda
-
A. UDP is suitable for the transmission of delay-sensitive traffic, and can be reorganized according to the
sequence number field in the message header
-
B. The range of well-known port numbers is 0-1023
-
C. UDP uses the STNOACK flag to request and confirm the establishment of a connection
-
D. TCP establish a connection is a three-way handshake process, TCP terminates the connection will
have to go through four-way handshake
Questão 75
Questão
277. Which of the following descriptions about wireless devices is correct?
Responda
-
A. The wireless device has no wired interface
-
B.FIT AP-like independent user access, Authentication, Forwarding services and other functions
-
C. Wireless Controller AC-like at the aggregation layer of the entire network, providing high-speed, Safe
and Reliable VLAN business
-
D. FAT AP generally works with wireless controller
Questão 76
Questão
278. What is the full name of the general routing platform VRP?
Responda
-
A.Versatile Redundancy Platform
-
B.Versatile Routing Protocol
-
C.Versatile Routing Platform
-
D.Virtual Routing Platform
Questão 77
Questão
280. The network shown in the figure below. The administrator hopes that RTA uses static routing, and preferentially sends data packets to RTB 's Loopback0 interface through G0/0/1 por, while G0/0/2 serves as a backup. So how to configure on RTA to achieve this requirement?
Responda
-
A.ip route-static 10.0.2.2 255.255.255.255 10.0.12.2
ip route-static 10.0.2.2 255.255.255.255 10.0.21.2 preference 40
-
B.ip route-static 10.0.2.2 255.255.255.255 10.0.12.2 preference 70
ip route-static 10.0.2.2 255.255.255.25510.0.21.2
-
C.ip route-static 10.0.2.2 255.255.255.255 10.0.12.2
ip route-static 10.0.2.2 255.255.255.255 10.0.21.2
-
D.ip route-static 10.0.2.2 255.255.255.255 10.0.12.2
ip route-static 10.0.2.2 255.255.255.255 10.0.21.2 preference 70
Questão 78
Questão
281. If the broadcast address of a network is 172.16.1.255, then what may its network address be?
Responda
-
A.172.16.1.128
-
B.172.16.2.0
-
C.172.16.1.1
-
D.172.86.1.253
Questão 79
Questão
282. The administrator wants to configure a hundred IP address on the G0/0/0 interface of the router, then which of the following addresses is correct?
Responda
-
A.192.168.10.112/30
-
B.237.6.1.2/24
-
C.127.3.1.4/28
-
D.145.4.2.55/26
Questão 80
Questão
284. In the network as shown in the figure below, the host has an ARP cache. Which of the following
statements is correct? (Multiple Choice
Responda
-
A. The following entries may exist in the ARP cache of host A. 10.0.12.2 MAC-C
-
B. The router needs to be configured with static routing, otherwise host A and host B cannot communicate
in both directions
-
C. The following entries exist in the ARP cache of host A 11.0.12.1 MAC-B
-
D. Host A and Host B can communicate in both directions
Questão 81
Questão
285. Compared with STP, which of the following port roles are newly defined in RSTP? (Multiple choice)
Responda
-
A. Designated port
-
B. Root port
-
C. Alternate port
-
D. Backup port
Questão 82
Questão
286. The Layer 2 switch is a data link layer device, which can identify the MAC address information in the data frame, forward data according to the MAC address, and record these MAC addresses and corresponding port information in its own MAC address table.
Questão 83
Questão
287. The two switches shown in the figure below have both enabled the STP protocol. Which port will eventually be in the Blocking state?
Responda
-
A. G0/0/2 port of SWB
-
B. G0/0/3 port of SWB
-
C. G0/0/2 port of SWA
-
D. G0/0/3 port of SWA
Questão 84
Questão
288. On Huawei switches, you can use the command vlan batch to create multiple VLANs in batches. simplifying the configuration process
Questão 85
Questão
289. As shown in the figure, the two switches use the default parameters to run STP, the configuration command STP root primary is used on switch A, and the configuration command STP priority 0 is used on
switch B. Then which port will be blocked?
Responda
-
A. G0/0/1 of switch B
-
B. G0/0/1 of switch A
-
C. HUB's G0/0/3
-
D. G0/0/2 of switch A
Questão 86
Questão
290. In the network shown in the figure below, two switches are connected by four links, COPPER refers to electrical interface, and FIBER refers to optical interface. Which of the following two interfaces can
achieve link aggregation?
Responda
-
A.G0/0/2 and G0/0/1
-
B.G0/0/3 and FE0/0/3
-
C.G0/0/3 and G0/0/1
-
D.G0/0/2 and FE0/0/3
Questão 87
Questão
291. Trunk ports can allow multiple VLANs to pass, including VLAN4096.
Questão 88
Questão
292. The following statements about the election of active ports in link aggregation LACP mode. Which is correct?
Responda
-
A. Compare the priority of the interface first, and it is impossible to determine the better one to continue to
compare the interface number, the smaller the better
-
B. Only compare interface priority
-
C. Compare device priority
-
D. Only compare interface numbers
Questão 89
Questão
293. Which of the following parameters is not included in the configuration BPDU of the STP protocol?
Responda
-
A. Port ID
-
B. VLAN ID
-
C.Bridge ID
-
D.Root ID
Questão 90
Questão
294. Which of the following options are configured in a Layer 2 ACL? (Multiple choices)
Responda
-
A.rule 10 permit 12-protoco1 arp
-
B.rule 25 permit source 192.168.1.1 0.0.0.0
-
C.rule 20 permit source-mac 0203-0405-0607
-
D.rule 15 permit vlan-id 100
Questão 91
Questão
295. A company has 50 private IP addresses. The administrator uses NAT technology to connect the company’s network to the public network, but the company has only one public network address and is not fixed. Which of the following NAT conversion methods meets the needs?
Responda
-
A. easy-ip
-
B. NAPT
-
C. Static NAT
-
D.Basic NAT
Questão 92
Questão
296. In the network shown in the figure, the administrator hopes that all hosts cannot access the web service (the port number is 80), and other services are normally accessed, so in the interface configuration of G0/0/1, traffic-filtar outbound needs to define which ACL rule?
Responda
-
A.
acl number 3000
rule 5 deny tcp destination-port eq www
rule 10 permit ip
#
-
B.
acl number 3001
rule 5 deny udp destination-port eq www
rule 10 permit ip
#
-
C.
acl number 3003
rule 5 permit ip
rule 10 deny udp destination-port eq www
#
-
D.
acl number 3002
rule 5 permit ip
rule 10 deny tcp destination-port eq www
#
Questão 93
Questão
297. At present, the company has a network administrator, and the AR2200 in the company network can
be remotely managed by directly entering the password through Telnet. After the two new network administrators arrived, the company hopes to assign their own user names and passwords to all administrators, as well as different levels of authority. So how should it be done? Multiple choices
Responda
-
A. Each administrator uses a different public IP address of the device when running the Telnet command
-
B. The user authentication mode configured by Telnet must select AAA mode
-
C. When configuring each administrator's account, different permission levels need to be configured
-
D. Configure three user names and their corresponding passwords in the AAA view
Questão 94
Questão
298. What is the main function of the DHCP DISCOVER message?
Responda
-
A. The server's confirmation response to the REQUEST message
-
B. The client is used to find the DHCP server
-
C. The client requests configuration confirmation, or renews the lease
-
D. The DHCP server is used to respond to the DHCP DISCOVER message, which carries various
configuration information
Questão 95
Questão
299. Which of the following network parameters can be assigned by Dynamic Host Configuration Protocol DHCP? (Multiple choices)
Responda
-
A. IP address
-
B. Gateway address
-
C. Operating system name
-
D. DNS address
Questão 96
Questão
300. In the WLAN architecture, the FIT AP cannot work independently and needs to be managed by the AC. Which of the following protocols are used to communicate between FIT AP and AC?
Responda
-
A. IPsec
-
B.WEP
-
C.CAPWAP
-
D.WAP
Questão 97
Questão
301. What is the first operation performed by the FIT AP after obtaining the AC's IP address?
Responda
-
A. Upgrade software version
-
B. Download the configuration file
-
C. Establish CAPWAP tunnel
-
D. Request configuration file
Questão 98
Questão
302. How many types of data flows with different service levels can be marked based on MPLS labels?
Questão 99
Questão
303. Which of the following functions does the LCP protocol in the PPP protocol support?
( Multiple Choice)
Responda
-
A. Negotiate network layer address
-
B. Negotiate authentication agreement
-
C. Detect link loops
-
D. Negotiate the maximum receiving unit MRU
Questão 100
Questão
304. The network management system can only view the operating status of the device through the SNMP protocol, but cannot issue configurations.
Questão 101
Questão
305. The network devices running the SNMP protocol are running locally-an agent process
Questão 102
Questão
306. Which extension headers are supported by IPv6 packets? (Multiple choice)
Responda
-
A. Destination option extension header
-
B. Fragmentation extension header
-
C. Hop-by-hop option extension header
-
D. VLAN extension header
Questão 103
Questão
307. Which of the following are not open interfaces of Huawei network equipment? (Multiple choice)
Responda
-
A.NETCONF
-
B.RESTCONF
-
C.JSON
-
D.XML
Questão 104
Questão
308. Which of the following are not the characteristics of a small-sized campus network?
Questão 105
Questão
309. Which statement are correct about the shortcut keys of the VRP operating platform? (Multiple
choice)
Responda
-
A. TAB prompts the most recently entered command
-
B. CTRL+C to stop the current command
-
C. The left cursor key (<) moves the cursor to the left position.
-
D.CTRL+Z back to user view
Questão 106
Questão
310. Which of the following information prompts will the VRP operating platform use for incomplete input
commands?
Responda
-
A.Error :Ambiguous command found at' position
-
B.Error :Incomplete command found at' position
-
C.Error: Too many parameters found at' position
-
D.Error: Wrong parameter found at 'position
Questão 107
Questão
311.As shown in the figure below, which port of the following switches will be blocked?
Responda
-
A.SWC G0/0/1
-
B.SWC G0/0/2
-
C.SWB G0/0/3
-
D.SWA G0/0/3
Questão 108
Questão
312.An existing switch is connected to a designated port through a port, but the port does not forward any packets, but can monitor network changes by receiving BPDUs, then what is the role of the port?
Responda
-
A. Designated port
-
B. Alternate port
-
C. Disable port
-
D. Root port
Questão 109
Questão
313.In the network shown in the figure, which of the following description is correct?
Responda
-
A. The network between RTA and SWC is the same conflict domain
-
B. The network between SWA and SWC is the same conflict domain
-
C. The network between SWA and SWB is the same broadcast domain
-
D. The network between SWA and SWC is the same broadcast domain
Questão 110
Questão
314. The output information of a switch is shown in the figure. Which of the following statements is correct?
(Multiple choice)
Responda
-
A. The GE0/0/2 port of the switch carries VLAN TAG when sending VLAN20 data frames
-
B. The user manually created 4 VLANs
-
C. The GE0/0/1 port of the switch does not carry VLAN TAG when sending VLAN20 data frames
-
D. The GE0/0/1 port of the switch does not carry VLAN TAG when sending VLAN10 data frames
Questão 111
Questão
315. As shown in the figure, if host A has the ARP cache of host B, host A can ping host B
Questão 112
Questão
316. By default, what is the STP Forward Delay time in seconds?
Questão 113
Questão
317. The G0/0/1 interface configuration information of router A is shown in the figure. Which of the following statements is correct? (Multiple choice)
Responda
-
A. This interface will not forward received FTP packets
-
B. This interface will not forward ICMP packets
-
C. This interface will not forward received SNMP packets
-
D. This interface can establish OSPF neighbor relationships with other routers
Questão 114
Questão
318. To apply the ACL configured in the figure in Telnet, which of the following statements is correct?
Responda
-
A. The device with IP address 172.16.105.4 can use Telnet service
-
B. The device with IP address 172.16.105.3 can use Telnet service
-
C. The device with IP address 172.16.105.5 can use Telnet service
-
D. The device with IP address 172.16.105.6 can use Telnet service
Questão 115
Questão
319.Which of the following fields is not included in the HELLO packet of the OSPF protocol?
Responda
-
A.Neighbor
-
B.Network Mask
-
C.HelloInterva
-
D.Sysname
Questão 116
Questão
320. All interfaces of the router belong to the same broadcast domain
Questão 117
Questão
321. The host's IPv4 address is 200.200.200.201/30. Which of the following hosts has an IPv4 address and its communication does not need to be forwarded by a router?
Responda
-
A.200.200.200.202
-
B.200.200.200.200
-
C.200.200.200.203
-
D.200.200.200.1
Questão 118
Questão
322. Among the following commands to configure the default route, which one is correct?
Responda
-
A.[Huawei-Seria10] ip route-static 0.0.0.0 0.0.0.0 0.0.0.0
-
B.[Huawei] ip route-static 0.0.0.0 0.0.0.0 192.168.1.1
-
C.[Huawei] ip route-static 0.0.0.0 0.0.0.0 0.0.0.0
-
D.[Huawei] ip route-static 0.0.0.0 255.255.255.255 192.168.1.1
Questão 119
Questão
323. If the network address of a network is 192.168.1.0, then its broadcast address must be 192.168.1.255.
Questão 120
Questão
324.On Huawei AR G3 routers, what is the -i parameter of the Ping command in VRP used to set?
Responda
-
A. The destination IP address of the Echo Reply message
-
B. The source IP address of the Echo Request message
-
C. Interface for receiving Echo Reply messages
-
D. Interface for sending Echo Request messages
Questão 121
Questão
325. If the Proto of a route information in the routing table is OSPF, the priority of this route must be 10.
Questão 122
Questão
326.In the switch MAC address table, which of the following entries will not age?
Responda
-
A. Dynamic MAC address table entry
-
B. Static MAC address table entry
-
C. Port MAC address table entry
-
D. Device MAC address table entry
Questão 123
Questão
327.What is the transmission rate of an Eth-Trunk port in manual link aggregation mode related to?
(Multiple choice)
Responda
-
A. Number of member ports
-
B. Bandwidth of member ports
-
C. If an IP address is configured on the member port
-
D. If the member port is on the public or private network
Questão 124
Questão
328.What is the role of the command port trunk allow pass vlan all?
Responda
-
A. If the port default vlan 3 command is configured for the connected remote device, VLAN 3 cannot
communicate between the two devices
-
B. All VLAN data frames are allowed to pass through this port
-
C. The connected peer device can dynamically determine which VLAN IDs are allowed to pass
-
D. The opposite port connected to the port must be configured with port trunk permit vlan all
Questão 125
Questão
329.Hybrid port can be connected to user host and other switches.
Questão 126
Questão
330. In which working state of the STP protocol can the port be changed to the Forwarding state without
going through other states?
Responda
-
A. Blocking
-
B. Learning
-
C. Listening
-
D. Disabled
Questão 127
Questão
331. Switches running SIP protocol, the port needs to wait for the forwarding delay in the Learning state before it can be transformed into the Forwarding state.
Questão 128
Questão
332. In order to realize the network layer function on VLANIF interface, what need to be configured on
VLANIF interface? (Multiple choice)
Responda
-
A. MAC address
-
B. Subnet mask
-
C. IP prefix
-
D. IP address
Questão 129
Questão
333. As shown in the figure, a static NAT command is deployed on router R1. When the PC accesses the Internet, the destination address in the data packet will not change
Questão 130
Questão
334. A DHCP server is deployed in the network, but the administrator found that some hosts did not correctly obtain the address specified by the DHCP server. What are the possible reasons? (Multiple
choice)
Responda
-
A. The address pool of the DHCP server has all been allocated
-
B. Some hosts cannot communicate with the DHCP server normally, and the client systems of these hosts
automatically generate addresses in the range of 169.254 0.0
-
C. There is another DHCP server in the network that works more efficiently
-
D. Some hosts cannot communicate with the DHCP server normally, and the client systems of these hosts automatically generate addresses in the range of 127.254.0.0
Questão 131
Questão
335. On the AC, you can manually specify the source address or source interface of the CAPWAP tunnel.
Questão 132
Questão
336. AC uses CAPWAP control tunnel to transmit management messages to FIT AP.
Questão 133
Questão
337. What is the coverage area of an AP in WLAN?
Responda
-
A. BSS
-
B. SSID
-
C. BSSID
-
D.ESS
Questão 134
Questão
338. FIT AP can work independently without relying on AC
Questão 135
Questão
339. In the CAPWAP tunnel establishment phase, after the AC receives the Join Request message sentby the AP, the AC will check the validity of the AP. Which of the following is the authentication method
supported by the AC? (Multiple choice)
Questão 136
Questão
340. Which of the following statements about the S field in the MPLS packet header are correct? (Multiple
choice)
Responda
-
A. s bit has only 1 bit in frame mode and 2 bit in cell mode
-
B. s bit exists in every MPLS packet header
-
C. It is used to mark whether there are other labels behind this label, 1 means yes, 0 means no
-
D. It is used to mark whether there are other labels behind this label, 0 means yes, 1 means no
Questão 137
Questão
341. The network management workstation manages network equipment through the SNMP protocol. When an abnormality occurs in the managed device, what kind of SHMP message will the network
management workstation receive?
Responda
-
A. trap message
-
B. get-response message
-
C. set-request message
-
D. get-request message
Questão 138
Questão
342. What type of IPv6 address FE80: 2E0: FCFF: FE6F: 4F36 belongs to?
Questão 139
Questão
343. The origin of SDN is the separation of transfer and control. The separation of transfer and control is a
way to realize SDN, not the essence.
Questão 140
Questão
344. Which of the following IEEE802.11 standards only supports 2.4GHz frequency band for communication?
Responda
-
A.802.11a
-
B.802.11g
-
C.802.11ax
-
D.802.11n
Questão 141
Questão
345. Through SR (Segment Routing), an explicit path can be easily defined. The nodes in the network only need to maintain the SegmentRouting information to cope with the real-time rapid development of the business. What are the following characteristics of Segment Routing? (Multiple choice)
Responda
-
A. By extending the existing protocol (eg IGP), the existing network can better and smoothly evolve
-
B. SR (Segment Routing) adopts IP forwarding, no additional maintenance is required for another label
forwarding table
-
C. Adopting source routing technology to provide the ability to quickly exchange text between the network
and upper-layer applications
-
D. Support the centralized control mode of the controller and the distributed control mode of the
transponder at the same time, and provide a balance between centralized control and distributed control
Questão 142
Questão
346. The MPLS label header is encapsulated between the data link layer header and the network layer header of the message.
Questão 143
Questão
347. If the MAC address of an interface is 0OEO-FCEF-OFEC, what is its corresponding EUI-64
address?
Responda
-
A.00EO-FCEF-FFFE-OFEC
-
B.02EO-FCFF-FEEF-0FEC
-
C.00EO-FCFF-FEEF-0FEC
-
D.02EO-FCEF-FFFE-0FEC
Questão 144
Questão
348. Which of the following description of static and dynamic routing is wrong?
Responda
-
A. Dynamic routing protocols take up more system resources than static routing protocols
-
B. After the link fails, the static route can automatically complete the network convergence.
-
C. After the administrator deploys the dynamic routing protocol in the corporate network, later
maintenance and expansion can be more convenient
-
D. Static routing is simple to configure and easy to manage when applied in the enterprise
Questão 145
Questão
349. Which of the following descriptions of OSPF areas are correct? (Multiple choice)
Responda
-
A. All networks should be declared in zone 0
-
B. The number of the backbone area cannot be 2
-
C. Before configuring the OSPF area, an IP address must be configured for the loopback interface of the
router
-
D. The number range of the area is from 0.0.0.0 to 255.255.255.255
Questão 146
Questão
350. The Layer 2 Ethernet switch generates entries in the MAC address table according to the ( ) of the
Ethernet frame received by the port.
Questão 147
Questão
351. The MAC address table of existing switches is shown in the figure. Which of the following statement
is correct?
Responda
-
A. The MAC address 5489-9885-18a8 is manually configured by the administrator
-
B. The MAC address 5489-9811-0b49 is manually configured by the administrator
-
C. The MAC address 5489-989d-1d30 is manually configured by the administrator
-
D. After the switch restarts, all MAC addresses need to be relearned
Questão 148
Questão
352. When the switch port sends a data frame carrying the same VLAN TAG and PVID, it must strip the VLAN TAG and forward it.
Questão 149
Questão
353.Which of the following levels is not a common network level in mid-sized campus network
architecture?
Responda
-
A. Access layer
-
B. Core layer
-
C. Convergence layer
-
D. Network layer
Questão 150
Questão
354. UDP cannot guarantee the reliability of data transmission, and does not provide the functions of message sequencing and flow control. It is suitable for flows with low transmission reliability requirements but high transmission speed and delay requirements.
Questão 151
Questão
355. Which stage of the life cycle of campus network construction is the beginning of a project?
Questão 152
Questão
356. When the router is powered on, it will read the configuration file from the default storage path to initialize the router. If there is no configuration file in the default storage path, what will the router use for
initialization?
Responda
-
A. Initial configuration
-
B. Current configuration
-
C. New configuration
-
D. Default parameters
Questão 153
Questão
357. In the OSPF protocol, which of the following descriptions of DR is correct? (Multiple choice) A. If the priority values of the two routers are equal, the router with the larger Router ID is selected as the
DR
Responda
-
A. If the priority values of the two routers are equal, the router with the larger Router ID is selected as the
DR
-
B. By default, all routers in this broadcast network will participate in the DR election
-
C. If the priority values of the two routers are different, select the router with the lower priority as the DR
-
D. DR and BDR should also establish an adjacency relationship
Questão 154
Questão
358. Which of the following fields is not included in the HELLO packet of the OSPF protocol?
Responda
-
A. Neighbor
-
B.Network mask
-
C.Sysname
-
D.Hellointerval
Questão 155
Questão
359. If the network address of a network is 10.1.1.0/30, what is its broadcast address?
Responda
-
A.10.1.1.2
-
B.10.1.1.3
-
C.10.1.1.4
-
D.10.1.1.1
Questão 156
Questão
360. If the broadcast address of a network is 172.16.1.255, what might its network address be?
Responda
-
A.172.16.2.0
-
B.172.16.1.128
-
C.172.16.1.1
-
D.172.16.1.253
Questão 157
Questão
361. When the IPv4 protocol is used as the network layer protocol, which field is not included in the
network layer header?
Questão 158
Questão
362. When the router forwards a data packet, if it does not match the corresponding detailed route and
there is no default route, it will directly discard the data packet.
Questão 159
Questão
363. What kind of message does the OSPF protocol use to send LSA to neighbors?
Responda
-
A. LSU
-
B. LSACK
-
C. LSR
-
D. LSA
Questão 160
Questão
364. Apply the ACL configured as shown in the figure in Telnet. Only the device with the IP address of
172.16.105.2 is allowed to log in remotely:
#
acl number 2000
rule 5 permit source 172.16.105.2 0
#
Questão 161
Questão
365. Regarding the corresponding relationship between the access control list number and type, which of
the following description is correct?
Responda
-
A. The basic access control list number range is 1000-2999
-
B. The access control list number range of the second layer is 4000-4999
-
C. The number range of interface-based access control list is 1000-2000
-
D. The range of advanced access control list numbers is 3000-4000
Questão 162
Questão
366. What is the number range of the Layer 2 ACL?
Responda
-
A.2000-2999
-
B.3000-3999
-
C.4000~4999
-
D.6000~6031
Questão 163
Questão
367. What is the destination IP address of the DHCP DISCOvER message?
Responda
-
A.127.0.0.1
-
B.224.0.0.1
-
C.224.0.0.2
-
D.255.255.255.255
Questão 164
Questão
368. In the history of WLAN development, which of the following is not included in the main wireless
protocol standards in the primary mobile office era?
Responda
-
A.802.11g
-
B.802.11a
-
C.802.11b
-
D.802.11ac
Questão 165
Questão
369. The router running the OSPF protocol can reach the FULL state after completing the LSDB
synchronization.
Questão 166
Questão
370. In order to distinguish different users and provide different network services on the AP. Which of the
following can be configured?
Questão 167
Questão
371. Network equipment running the SNMP protocol can take the initiative to report alarm information so that the network administrator can discover the fault in time
Questão 168
Questão
372.The IPv6 protocol uses NS and NA packets for duplicate address detection (DAD)
Questão 169
Questão
373. Which of the following descriptions are correct about the concept of IEV architecture? (Multiple
choice)
Responda
-
A.MANO is composed of NFVO.VNFN and VIM.
-
B.VFM. Virtual network function management, responsible for the life cycle management of VNF
-
C.VIM (Virtualised Infrastructure Manager) virtual resource management, responsible for the virtualization
of infrastructure.
-
D. NFVO (NEV Orchestrator) is responsible for business orchestration
Questão 170
Questão
374. Which of the following methods can read data non-blocking in Python's telnetlib?
Questão 171
Questão
375. Regarding the control plane of the device, which of the following statements is correct? (Multiple
choice)
Responda
-
A. The control plane is responsible for the interaction of routing protocols between devices
-
B. The control plane provides equipment monitoring capabilities
-
C. The control plane is responsible for directing data forwarding
-
D. The control plane is responsible for generating the IP routing table
Questão 172
Questão
376. Which of the following commands can modify the device name to huawei?
Responda
-
A. Hostname Huawei
-
B. Sysname Huawei
-
C. Rename Huawei
-
D.Do name Huawei
Questão 173
Questão
377. Which statement is wrong about the ARP message?
Responda
-
A. ARP reply packets are sent unicast
-
B. Any link layer protocol requires ARP messages to assist in obtaining data link layer identification
-
C. ARP packets cannot be forwarded to other broadcast domains
-
D. ARP request message is sent by broadcast
Questão 174
Questão
378. Which of the following networks belong to a local area network? (Multiple choice)
Questão 175
Questão
379. Which statement about OSPF protocol DR is correct?
Responda
-
A. DR must be the highest priority device in the network
-
B. Router ID, the larger the value, the more preferred to be elected as DR
-
C. DR election is preemptive
-
D. An interface priority is 0, then the interface cannot be a DR
Questão 176
Questão
380. Which of the following elements are included in the routing table? (Multiple choice)
Responda
-
A. Interface
-
B. Destination/mask
-
C. Nexthop
-
D. Protocol
Questão 177
Questão
381. The following rules exist in a certain ACL of the router. rule deny tcp source 192.168.1.0 0.0.0.255
destination 172.16.10.1 0.0.0.0 destination-port eq 21 Which statement is correct?
Responda
-
A. The source IP is 192.168.1.1, the destination IP is 172.16.10.1, and all TCP packets whose destination
port number is 21 match this rule
-
B. The source IP is 192.168.1.1, the destination IP is 172.16.10.2, and all 1CP packets whose destination
port number is 21 match this one
-
C. The source IP of the rule is 192.168.1.1, the destination IP is 72.16.10.3. All TCP packets with the
destination port number of 21 match this rule
-
D. The type of ACL is a basic ACL
Questão 178
Questão
382. Which of the following parameters cannot be used in the advanced visit control list?
Questão 179
Questão
383. In the network shown in the figure below, host A logs in to router A through Telnet, and then obtains the configuration file of router B through FTP on the remote interface. How many TCP connections exist
on router A at this time?
Questão 180
Questão
384. Which type of message is used by network devices running SNMPv 1 protocol to actively send alarm
information?
Responda
-
A. Trap
-
B. Response
-
C.Get Request
-
D. Get-Next Request
Questão 181
Questão
385. By default, network devices running SNMPv2c protocol use which of the following port numbers to
send trap messages to the network management system?
Questão 182
Questão
386. Which of the following types of addresses is not included in IPv6 addresses?
Responda
-
A. Anycast address
-
B. Broadcast address
-
C. Unicast address
-
D. Multicast address
Questão 183
Questão
387. In the VRP interface, use the command startup saved-configuration backup.cfg. to configure the
backup.cfg file for the next startup.
Questão 184
Questão
388. Which of the following statements about Trunk port and Access port are correct?
Responda
-
A. Trunk ports can only send untagged frames
-
B. Access port can only send tagged frames
-
C. Trunk ports can only send tagged frames
-
D. Access port can only send untagged frames
Questão 185
Questão
389. If the Length/Type of an Ethernet data frame is 0X8100, which of the following is correct?
Responda
-
A. This data frame must carry VLAN TAG
-
B. There must be a UDP header in the upper layer of this data frame
-
C. There must be an IP header in the upper layer of this data frame
-
D. There must be a TCP header in the upper layer of this data frame
Questão 186
Questão
390. The two switches shown below have both enabled the STP protocol. An engineer made the following conclusions on this network. Which conclusions do you think are correct? (Multiple choice
Responda
-
A. The G0/0/3 port of SWA is stable in Forwarding state
-
B. The G0/0/2 port of SWA is stable in Forwarding state
-
C. Both ports of SWA are designated ports
-
D. G0/0/2 port of SWB is stable in Forwarding state
Questão 187
Questão
391. What is the length of the Ethernet_II frame containing the Ethernet header?
Responda
-
A.60-1560B
-
B.46-1500B
-
C.64-1500B
-
D.64-1518B
Questão 188
Questão
392. By default, the bridge priority of Huawei switches is 32768
Questão 189
Questão
393. On the switch, which VLANs can be deleted by using the undo command? (Multiple choice)
Responda
-
A.vlan 4094
-
B.vlan 2
-
C.vlan 1
-
D.vlan 1024
Questão 190
Questão
394.According to the command shown in the figure, which of the following description is correct? (Multiple
choice)
Responda
-
A. The PVID of GigabitEthernet0/0/2 port is 1
-
B. The PVID of GigabitEthernet0/0/1 port is 10
-
C. The PVID of GigabitEthernet0/0/2 port is 10
-
D. The PVID of GigabitEthernet0/0/1 port is 11
Questão 191
Questão
395.Which of the following advantages does the router-on-a-stick approach achieve routing intercommunication between VLANs?
Responda
-
A. Reduce the number of equipment
-
B. Reduce routing table entries
-
C. Reduce the use of IP addresses
-
D. Reduce the number of chain connections
Questão 192
Questão
396. When the host frequently moves, which VLAN division method is most appropriate?
Responda
-
A. Based on AC address division
-
B. Based on strategy division
-
C. Based on IP subnet division
-
D. Based on port division
Questão 193
Questão
397. Which of the following description are wrong about the Forwarding state in the spanning tree protocol? (Multiple choice)
Responda
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A. The port in the Forwarding state can forward data packets
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B. The port in the Forwarding state does not learn the source MAC address of the packet
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C. Ports in Forwarding state can receive BPDU packets
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D. The port in the Forwarding state will definitely send BPDU packets
Questão 194
Questão
398. On the VRP platform, what is the role of the command "interface vlanit <vlan-id>" ?
Questão 195
Questão
399. The second layer ACL can match the source MAC, destination MAC, source IP, destination IP and other information.
Questão 196
Questão
400. The configuration of the country code will affect the actual transmission frequency and maximum transmission power.
Questão 197
Questão
401. What equipment is generally involved in the wlan deployment scheme in the enterprise scenario?
(Multiple choice)
Responda
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A. AC(Acess Controller)
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B. Poe switch
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C. CPE
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D. AP
Questão 198
Questão
402. The role of telnet.read_all() in Telnetlib is to read all data until EOF. If the echo does not return EOF, it will always be blocked
Questão 199
Questão
403. In the network shown in the figure below, all routers run the OSPF protocol, and the link cost value is shown in the figure. What is the cost value of the route entry to the network 10.0.0.0/8 in the RTA routing
table?
Questão 200
Questão
404. The router output information is shown in the figure. Which of the following statements is wrong?
Responda
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A. The IP address of the Ethernet0/0/0 interface is 10.0.12.1/24
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B. The MTU value of the Ethgrnet0/0/0 interface is 1480
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C. The physical link of the Ethernet0/0/0 interface is normal
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D. The broadcast address corresponding to the Ethernet0/0/0 interface is 10.0.12.255