Question 1
Question
What are the two main components of Cisco Express Forwarding (CEF)? (Choose two.)
Question 2
Question
Which statement describes the sequence of processes executed by a router when it receives a packet from a host to be delivered to a host on another network?
Answer
-
It receives the packet and forwards it directly to the destination host.
-
It de-encapsulates the packet, selects the appropriate path, and encapsulates the packet to forward it toward
-
the destination host.
-
It de-encapsulates the packet and forwards it toward the destination host.
-
It selects the path and forwards it toward the destination host.
Question 3
Question
Refer to the exhibit. Router R1 has two interfaces that were configured with correct IP addresses and subnet masks. Why does the show ip route command output not display any information about the directly connected networks??
Answer
-
The directly connected networks have to be created manually to be displayed in the routing table.
-
The routing table will only display information about these networks when the router receives a packet.
-
The no shutdown command was not issued on these interfaces.
-
The gateway of last resort was not configured.
Question 4
Question
What happens when part of an Internet television transmission is not delivered to the destination?
Answer
-
A delivery failure message is sent to the source host.
-
The part of the television transmission that was lost is re-sent.
-
The entire transmission is re-sent.
-
The transmission continues without the missing portion.
Question 5
Question
Which three statements characterize the transport layer protocols? (Choose three.)
Answer
-
TCP and UDP port numbers are used by application layer protocols.
-
TCP uses port numbers to provide reliable transportation of IP packets.
-
UDP uses windowing and acknowledgments for reliable transfer of data.
-
TCP uses windowing and sequencing to provide reliable transfer of data.
-
TCP is a connection-oriented protocol. UDP is a connectionless protocol.
Question 6
Question
Which statement is true regarding the UDP client process during a session with a server?
Answer
-
Datagrams that arrive in a different order than that in which they were sent are not placed in order.
-
A session must be established before datagrams can be exchanged.
-
A three-way handshake takes place before the transmission of data begins.
-
Application servers have to use port numbers above 1024 in order to be UDP capable.
Question 7
Question
Which two components are configured via software in order for a PC to participate in a network environment? (Choose two.)
Answer
-
MAC address
-
IP address
-
kernel
-
shell
-
subnet mask
Question 8
Question
Which two reasons generally make DHCP the preferred method of assigning IP addresses to hosts on large networks? (Choose two.)
Answer
-
It eliminates most address configuration errors.
-
It ensures that addresses are only applied to devices that require a permanent address.
-
It guarantees that every device that needs an address will get one.
-
It provides an address only to devices that are authorized to be connected to the network.
-
It reduces the burden on network support staff.
Question 9
Question
What is the subnet address for the address 2001:DB8:BC15:A:12AB::1/64?
Answer
-
2001:DB8:BC15::0
-
2001:DB8:BC15:A::0
-
2001:DB8:BC15:A:1::1
-
2001:DB8:BC15:A:12::0
Question 10
Question
What is the purpose of the network security authentication function?
Answer
-
to require users to prove who they are
-
to determine which resources a user can access
-
to keep track of the actions of a user
-
to provide challenge and response questions
Question 11
Question
Which type of wireless security makes use of dynamic encryption keys each time a client associates with an AP?
Question 12
Question
Launch PT – Hide and Save PT. Open the PT activity. Perform the tasks in the activity instructions and then fill in the blank. The Server0 message is .
Question 13
Question
Which field in an IPv4 packet header will typically stay the same during its transmission?
Answer
-
Packet Length
-
Destination Address
-
Flag
-
Time-to-Live
Question 14
Question
Launch PT – Hide and Save PT. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
Which IPv6 address is assigned to the Serial0/0/0 interface on RT2?
Answer
-
2001:db8:abc:1::1
-
2001:db8:abc:5::1
-
2001:db8:abc:5::2
-
2001:db8:abc:10::15
Question 15
Question
What must be configured to enable Cisco Express Forwarding (CEF) on most Cisco devices that perform Layer 3 switching?
Answer
-
Manually configure next-hop Layer 2 addresses.
-
Issue the no shutdown command on routed ports.
-
CEF is enabled by default, so no configuration is necessary.
-
Manually map Layer 2 addresses to Layer 3 addresses to populate the forwarding information base (FIB).
Question 16
Question
What is the purpose of adjacency tables as used in Cisco Express Forwarding (CEF)?
Answer
-
to populate the forwarding information base (FIB)
-
to maintain Layer 2 next-hop addresses
-
to allow the separation of Layer 2 and Layer 3 decision making
-
to update the forwarding information base (FIB)
Question 17
Question
Which statement describes a characteristic of the network layer in the OSI model?
Answer
-
It manages the data transport between the processes running on each host.
-
In the encapsulation process, it adds source and destination port numbers to the IP header.
-
When a packet arrives at the destination host, its IP header is checked by the network layer to determine where the packet has to be routed.
-
Its protocols specify the packet structure and processing used to carry the data from one host to another.
Question 18
Question
A user gets an IP address of 192.168.0.1 from the company network administrator. A friend of the user at a different company gets the same IP address on another PC. How can two PCs use the same IP address and still reach the Internet, send and receive email, and search the web?
Answer
-
Both users must be using the same Internet Service Provider.
-
ISPs use Network Address Translation to change a user IP address into an address that can be used on the Internet.
-
ISPs use Domain Name Service to change a user IP address into a public IP address that can be used on the Internet.
-
Both users must be on the same network.
Question 19
Question
Why does HTTP use TCP as the transport layer protocol?
Answer
-
to ensure the fastest possible download speed
-
because HTTP is a best-effort protocol
-
because transmission errors can be tolerated easily
-
because HTTP requires reliable delivery
Question 20
Question
What is the valid most compressed format possible of the IPv6 address 2001:0DB8:0000:AB00:0000:0000:0000:1234?
Answer
-
2001:DB8:0:AB00::1234
-
2001:DB8:0:AB::1234
-
2001:DB8::AB00::1234
-
2001:DB8:0:AB:0:1234
Question 21
Question
What field content is used by ICMPv6 to determine that a packet has expired?
Answer
-
TTL field
-
CRC field
-
Hop Limit field
-
Time Exceeded field
Question 22
Question
Which firewall technique blocks incoming packets unless they are responses to internal requests?
Question 23
Question
A network technician is investigating network connectivity from a PC to a remote host with the address 10.1.1.5. Which command issued on the PC will return to the technician the complete path to the remote host?
Answer
-
trace 10.1.1.5
-
traceroute 10.1.1.5
-
tracert 10.1.1.5
-
ping 10.1.1.5
Question 24
Question
Fill in the blank. To prevent faulty network devices from carrying dangerous voltage levels, equipment must be grounded* correctly
Question 25
Question
What is a possible hazard that can be caused by network cables in a fire?
Answer
-
The cable insulation could be flammable.
-
Users could be exposed to excessive voltage.
-
Network cables could be exposed to water.
-
The network cable could explode.
Question 26
Question
What device is commonly used to verify a UTP cable?
Question 27
Question
What needs to be checked when testing a UTP network cable?
Answer
-
capacitance
-
wire map
-
inductance
-
flexibility
Question 28
Question
Refer to the exhibit. A ping to PC2 is issued from PC0, PC1, and PC3 in this exact order. Which MAC addresses will be contained in the S1 MAC address table that is associated with the Fa0/1 port?
Answer
-
just PC0 and PC1 MAC addresses
-
just the PC0 MAC address
-
PC0, PC1, and PC2 MAC addresses
-
just the PC1 MAC address
-
just the PC2 MAC address
Question 29
Question
Which function is provided by TCP?
Answer
-
data encapsulation
-
detection of missing packets
-
communication session control
-
path determination for data packets
Question 30
Question
What does a router use to determine where to send data it receives from the network?
Question 31
Question
Which router interface should be used for direct remote access to the router via a modem?
Question 32
Question
A technician is configuring a router to allow for all forms of management access. As part of each different type of access, the technician is trying to type the command login. Which configuration mode should be entered to do this task?
Question 33
Question
Which three statements characterize the transport layer protocols? (Choose three.)
Answer
-
TCP and UDP port numbers are used by application layer protocols.
-
TCP uses port numbers to provide reliable transportation of IP packets.
-
UDP uses windowing and acknowledgments for reliable transfer of data.
-
TCP uses windowing and sequencing to provide reliable transfer of data.
-
TCP is a connection-oriented protocol. UDP is a connectionless protocol.
Question 34
Question
Refer to the exhibit. A TCP segment from a server has been captured by Wireshark, which is running on a host. What acknowledgement number will the host return for the TCP segment that has been received?
Question 35
Question
Which statement is true about an interface that is configured with the IPv6 address command?
Answer
-
IPv6 traffic-forwarding is enabled on the interface.
-
A link-local IPv6 address is automatically configured on the interface.
-
A global unicast IPv6 address is dynamically configured on the interface.
-
Any IPv4 addresses that are assigned to the interface are replaced with an IPv6 address.
Question 36
Question
Refer to the exhibit. An administrator must send a message to everyone on the router A network. What is the broadcast address for network 172.16.16.0/22?
Answer
-
172.16.16.255
-
172.16.20.255
-
172.16.19.255
-
172.16.23.255
-
172.16.255.255
Question 37
Question
A network administrator is variably subnetting a given block of IPv4 addresses. Which combination of network addresses and prefix lengths will make the most efficient use of addresses when the need is for 2 subnets capable of supporting 10 hosts and 1 subnet that can support 6 hosts?
Answer
-
10.1.1.128/28
10.1.1.144/28
10.1.1.160/29
-
10.1.1.128/28
10.1.1.144/28
10.1.1.160/28
-
10.1.1.128/28
10.1.1.140/28
10.1.1.158/26
-
10.1.1.128/26
10.1.1.144/26
10.1.1.160/26
-
10.1.1.128/26
10.1.1.140/26
10.1.1.158/28
Question 38
Question
How many additional bits should be borrowed from a /26 subnet mask in order to create subnets for WAN links that need only 2 useable addresses?
Question 39
Question
A network administrator requires access to manage routers and switches locally and remotely. Match the description to the access method. (Not all options are used.)
Question 40
Question
Refer to the exhibit. The administrator configured the access to the console and the vty lines of a router. Which conclusion can be drawn from this configuration?
Answer
-
Unauthorized individuals can connect to the router via Telnet without entering a password.
-
Because the IOS includes the login command on the vty lines by default, access to the device via Telnet will require authentication.
-
Access to the vty lines will not be allowed via Telnet by anyone.
-
Because the login command was omitted, the password cisco command is not applied to the vty lines.
Question 41
Question
An administrator issued the service password-encryption command to apply encryption to the passwords configured for enable password, vty, and console lines. What will be the consequences if the administrator later issues the no service password-encryption command?
Answer
-
It will remove encryption from all passwords.
-
It will reverse only the vty and console password encryptions.
-
It will not reverse any encryption.
-
It will reverse only the enable password encryption.
Question 42
Question
After making configuration changes, a network administrator issues a copy running-config startup-config command in a Cisco switch. What is the result of issuing this command?
Answer
-
The new configuration will be stored in flash memory.
-
The new configuration will be loaded if the switch is restarted.
-
The current IOS file will be replaced with the newly configured file.
-
The configuration changes will be removed and the original configuration will be restored.
Question 43
Question
What are two features of ARP? (Choose two.)
Answer
-
If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast.
-
An ARP request is sent to all devices on the Ethernet LAN and contains the IP address of the destination host and its multicast MAC address.
-
When a host is encapsulating a packet into a frame, it refers to the MAC address table to determine the mapping of IP addresses to MAC addresses.
-
If no device responds to the ARP request, then the originating node will broadcast the data packet to all devices on the network segment.
-
If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.
Question 44
Question
A network administrator is enabling services on a newly installed server. Which two statements describe how services are used on a server? (Choose two.)
Answer
-
Data sent with a service that uses TCP is received in the order the data was sent.
-
A port is considered to be open when it has an active server application that is assigned to it.
-
An individual server can have two services that are assigned to the same port number.
-
An individual server cannot have multiple services running at the same time.
-
Server security can be improved by closing ports that are associated with unused services.
Question 45
Question
Given the binary address of 11101100 00010001 00001100 00001010, which address does this represent in dotted decimal format?
Answer
-
234.17.10.9
-
234.16.12.10
-
236.17.12.6
-
236.17.12.10
Question 46
Question
A particular telnet site does not appear to be responding on a Windows 7 computer. What command could the technician use to show any cached DNS entries for this web page?
Answer
-
ipconfig /all
-
arp -a
-
ipconfig /displaydns
-
nslookup
Question 47
Question
Fill in the blank.
Network devices come in two physical configurations. Devices that have expansion slots that provide the flexibility to add new modules have a Modular * configuration.
Refer to the exhibit. What is the maximum TIL value that is used to reach the destination www.cisco.com?
Question 48
Question
Which statement is true about DHCP operation?
Answer
-
When a device that is configured to use DHCP boots, the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers on the networK.
-
A client must wait for lease expiration before it sends another DHCPREOUEST message.
-
The DHCPDISCOVER message contains the IP address and sub net masK to be assigned, the IP address of the DNS server, and the IP address of the default gateway.
-
If the client receives several DHCPOFFER messages from different servers, it sends a unicast DHCPREOUEST message to the server from which it chooses to obtain the IP information.
Question 49
Question
Which type of wireless security is easily compromised?
Question 50
Question
A network administrator notices that the throughput on the network appears lower than expected when compared to the end-to-end network bandwidth. Which three factors can explain this difference? (Choose three.)
Answer
-
the amount of traffic
-
the type of data encapsulation in use
-
the type of traffic
-
the number and type of network devices that the data is crossing
-
the bandwidth of the connection to the ISP
-
the reliability of the network backbone
Question 51
Question
A host PC is attempting to lease an address through DHCP. What message is sent by the server to the client know it is able to use the provided IP information?
Answer
-
DHCPDISCOVER
-
DHCPOFFER
-
DHCPPREQUEST
-
DHCPACK
-
DHCPNACK
Question 52
Question
A network administrator is configuring access control to switch SW1. If the administrator uses console line to connect to the switch, which password is needed to access user EXEC mode?
Answer
-
letmein
-
secretin
-
lineconin
-
linevtyin
Question 53
Question
How many bits would need to be borrowed if a network admin were given the IP addressing scheme of 172.16.0.0/16 and needed no more than 16 subnet with equal number of hosts?
Question 54
Question
Question:
It will give 4 options about ping, the correct one is:
Question 55
Question
Which statement best describes the operation of the File Transfer Protocol?
Answer
-
An FTP client uses a source port number of 21 and a randomly generated destination port number during the establishment of control traffic with an FTP Server.
-
An FTP client uses a source port number of 20 and a randomly generated destination port number during the establishment of data traffic with an FTP Server.
-
An FTP server uses a source port number of 20 and a randomly generated destination port number during the establishment of control traffic with an FTP client.
-
An FTP server uses a source port number of 21 and a randomly generated destination port number during the establishment of control traffic with an FTP client.
Question 56
Question
A client is establishing a TCP session with a server. How is the acknowledgment number in the response segment to the client determined?
Answer
-
The acknowledgment number field is modified by adding 1 to the randomly chosen initial sequence number in response to the client.
-
The acknowledgment number is set to 11 to signify an acknowledgment packet and synchronization packet back to the client.
-
The acknowledgment number field uses a random source port number in response to the client.
-
The acknowledgment number is set to 1 to signify an acknowledgment packet back to the client.
Question 57
Question
Why does layer 3 device perform the ANDing process on a destination IP and subnet Mask?
Answer
-
to identify host address and destination host;
-
to identify network address of destination host;
-
to identify faulty frames;
-
to identify broadcast address of destination network;
Question 58
Question
There was also a question about if you activated service password encryption in the past and you prompt “no service password encryption” what password are modified ?
Question 59
Question
What type of communication rule would best describe CSMA/CD?
Answer
-
message encapsulation
-
flow control
-
message encoding
-
access method
Question 60
Question
What is the primary reason to subnet IPv6 prefixes?
Answer
-
to conserve IPv6 addresses
-
to avoid wasting IPv6 addresses
-
to conserve IPv6 prefixes
-
to create a hierarchical Layer 3 network design
Question 61
Question
Which statement describes data throughput?
Answer
-
It is the measure of the bits transferred across the media under perfect conditions.
-
It is the measure of the bits transferred across the media over a given period of time.
-
It indicates the capacity of a particular medium to carry data.
-
It is the guaranteed data transfer rate offered by an ISP.
Question 62
Question
Fill in the blank. Use a number.
IPv4 multicast addresses are directly mapped to IEEE 802 (Ethernet) MAC addresses using the last ___4___ of the 28 available bits in the IPv4 multicast group address.
Question 63
Question
How could a faulty network device create a source of hazard for a user? (Choose two.)
Answer
-
It could stop functioning.
-
It could apply dangerous voltage to other pieces of equipment.
-
It could explode.
-
It could produce an unsafe electromagnetic field.
-
It could apply dangerous voltage to itself.
Question 64
Question
What are three important considerations when planning the structure of an IP addressing scheme? (Choose three.)
Answer
-
preventing duplication of addresses
-
providing and controlling access
-
documenting the network
-
monitoring security and performance
-
conserving addresses
-
implementing new services
Question 65
Question
What is the metric value that is used to reach the 10.1.1.0 network in the following routing table entry? D 10.1.1.0/24 [90/2170112] via 209.165.200.226, 00:00:05, Serial0/0/0
Question 66
Question
Which two services or protocols use the preferred UDP protocol for fast transmission and low overhead? (Choose two)
Question 67
Question
What action does a DHCPv4 client take if it receives more than one DHCPOFFER from multiple DHCP servers?
Answer
-
It sends a DHCPREQUEST that identifies which lease offer the client is accepting.
-
It sends a DHCPNAK and begins the DHCP process over again.
-
It discards both offers and sends a new DHCPDISCOVER.
-
It accepts both DHCPOFFER messages and sends a DHCPACK.
Question 68
Question
To what legacy address class does the address 10.0.0.0 belong?
Answer
-
Class B
-
Class D
-
Class A
-
Class C
-
Class E
Question 69
Question
What type of communication medium is used with a wireless LAN connection?
Answer
-
radio waves
-
fiber
-
microwave
-
UTP
Question 70
Question
Which method of IPv6 prefix assignment relies on the prefix contained in RA messages?
Answer
-
EUI-64
-
static
-
SLAAC
-
stateful DHCPv6
Question 71
Question
What is a characteristic of DNS?
Answer
-
DNS servers can cache recent queries to reduce DNS query traffic.
-
DNS servers are programmed to drop requests for name translations that are not within their zone.
-
All DNS servers must maintain mappings for the entire DNS structure.
-
DNS relies on a hub-and-spoke topology with centralized servers.
Question 72
Question
What is the prefix for the host address 2001:DB8:BC15:A:12AB::1/64?
Answer
-
2001:DB8:BC15
-
2001:DB8:BC15:A
-
2001:DB8:BC15:A:1
-
2001:DB8:BC15:A:12
Question 73
Question
What information is maintained in the CEF adjacency table?
Answer
-
Layer 2 next hops
-
MAC address to IPv4 address mappings
-
IP address to interface mappings
-
the IP addresses of all neighboring routers
Question 74
Question
When planning for network growth, where in the network should packet captures take place to assess network traffic?
Answer
-
on as many different network segments as possible
-
only at the edge of the network
-
between hosts and the default gateway
-
only on the busiest network segment
Question 75
Question
When applied to a router, which command would help mitigate brute-force password attacks against the router?
Answer
-
exec-timeout 30
-
service password-encryption
-
banner motd $Max failed logins = 5$
-
login block-for 60 attempts 5 within 60
Question 76
Question
Refer to the exhibit. An administrator is testing connectivity to a remote device with the IP address 10.1.1.1. What does the output of this command indicate?
Answer
-
Connectivity to the remote device was successful.
-
A router along the path did not have a route to the destination.
-
A ping packet is being blocked by a security device along the path.
-
The connection timed out while waiting for a reply from the remote device.
Question 77
Question
Match each item to the type of topology diagram on which it is typically identified. (Not all options are used.)
Question
Question 78
Question
A network administrator is upgrading a small business network to give high priority to real-time applications traffic. What two types of network services is the network administrator trying to accommodate? (Choose two.)
Answer
-
SNMP
-
instant messaging
-
voice
-
FTP
-
video
Question 79
Question
Refer to the exhibit. An administrator is testing connectivity to a remote device with the IP address
10.1.1.1. What does the output of this command indicate?
Answer
-
Connectivity to the remote device was successful
-
A router along the path did not have a route to the destination
-
A ping packet is being blocked by a security device along the path.
-
The connection timed out while waiting for a reply from the remote device.
Question 80
Question
Match the situation with the appropriate use of network media.
Question
Question 81
Question
Which IPv4 address can be pinged to test the internal TCP/IP operation of a host?
Answer
-
0.0.0.0
-
0.0.0.1
-
127.0.0.1
-
192.168.1.1
-
255.255.255.255
Question 82
Question
What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)
Question 83
Question
Which two protocols function at the internet layer? (Choose two)
Question 84
Question
Which publicly available resources describe protocols, processes, and technologies for the Internet but do not give implementation details?
Answer
-
Request for Comments
-
IRTF research papers
-
protocol models
-
IEEE standards
Question 85
Question
A network administrator is upgrading a small business network to give high priority to real-time
applications traffic. What two types of network services is the network administrator trying to
accommodate? (Choose two.)
Answer
-
SNMP
-
instant messaging
-
voice
-
FTP
-
video
Question 86
Question
Which IPv4 address can be pinged to test the internal TCP/IP operation of a host?
Answer
-
0.0.0.0
-
0.0.0.1
-
127.0.0.1
-
192.168.1.1
-
255.255.255.255
Question 87
Question
What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)
Question 88
Question
Which two protocols function at the internet layer? (Choose two
Question 89
Question
Which publicly available resources describe protocols, processes, and technologies for the Internet
but do not give implementation details?
Answer
-
Request for Comments
-
IRTF research papers
-
protocol models
-
IEEE standards
Question 90
Question
When IPv4 addressing is manually configured on a web server, which property of the IPv4
configuration identifies the network and host portion for an IPv4 address?
Answer
-
DNS server address
-
subnet mask
-
default gateway
-
DHCP server address