Questão 1
Questão
72.257.126.11 is a valid A class host address.
Questão 2
Questão
In CIDR, conventional network class distinctions do not exist.
Questão 3
Questão
Some software errors point to a physical connectivity problem.
Questão 4
Questão
Logical connectivity problems often prove more difficult to isolate and resolve than physical connectivity problems
Questão 5
Questão
193.255.126.255 is a valid C class host address.
Questão 6
Questão
In a star topology, a single connection failure will halt all traffic between all sites.
Questão 7
Questão
In data networks, the task of directing information efficiently to the correct destination is handled by connectivity devices, primarily switches and routers.
Questão 8
Questão
Standards assist in network design.
Questão 9
Questão
Not all Transport layer protocols are concerned with reliability.
Questão 10
Questão
Latency occurs when a signal traveling on one wire or cable infringes on the signal traveling over an adjacent wire or cable.
Questão 11
Questão
All protocols are routable.
Questão 12
Questão
The command used to view IP information on a Windows workstation is ipconfig.
Questão 13
Questão
Cut-through switches can detect corrupt packets.
Questão 14
Questão
Human errors, ignorance, and omissions cause more than half of all security breaches sustained by networks.
Questão 15
Questão
A physical topology ____.
Responda
-
a. specifies device types
-
b. depicts a network in broad scope
-
c. specifies connectivity methods
-
d. specifies addressing schemes
Questão 16
Questão
In which OSI model layer does TCP operate?
Responda
-
Physical
-
b. Transport
-
c. Network
-
d. Data Link
Questão 17
Questão
Transport layer protocols break large data units into ____.
Responda
-
PDUs
-
b. segments
-
c. frames
-
d. block IDs
Questão 18
Questão
____ is a utility that can verify that TCP/IP is installed, bound to the NIC, configured correctly, and communicating with the network.
Responda
-
ARP
-
b. PING
-
c. Telnet
-
d. FTP
Questão 19
Questão
On an Ethernet network, a(n) ____ is the portion of a network in which collisions occur if two nodes transmit data at the same time.
Responda
-
a. collision domain
-
b. broadcast domain
-
c. interference domain
-
d. duplicate domain
Questão 20
Questão
1000Base-SX has a maximum throughput of ____.
Responda
-
a. 1 Gbps
-
b. 10 Gbps
-
c. 100 Gbps
-
d. 1000 Gbps
Questão 21
Questão
The ____ gateway is the gateway that first interprets its outbound requests to other subnets, and then interprets its inbound requests from other subnets.
Responda
-
a. proxy
-
b. core
-
c. Internet
-
d. default
Questão 22
Questão
How is reliability achieved in TCP?
Questão 23
Questão
Within a classful addressing subnet mask, the ____ bits indicate that corresponding bits in an IPv4 address contain network information.
Responda
-
a. 0
-
b. 1
-
c. first eight
-
d. last eight
Questão 24
Questão
CIDR notation takes the form of the network ID followed by a(n) ____, followed by the number of bits that are used for the extended network prefix.
Responda
-
a. dash ( - )
-
b. underscore ( _ )
-
c. backward slash ( \ )
-
d. forward slash ( / )
Questão 25
Questão
A(n) ____ is a graphical representation of a network’s devices and connections.
Questão 26
Questão
____ management refers to monitoring how well links and devices are keeping up with the demands placed on them.
Responda
-
a. Performance
-
b. Fault
-
c. Network
-
d. Configuration
Questão 27
Questão
28. ____ involves manipulating certain characteristics of packets, data streams, or connections to manage the type and amount of traffic traversing a network or interface at any moment.
Responda
-
a. Traffic monitoring
-
b. Traffic routing
-
c. Traffic polling
-
d. Traffic shaping
Questão 28
Questão
The most common type of caching is ____ caching.
Responda
-
a. online
-
b. Web
-
c. Internet
-
d. device
Questão 29
Questão
A ____ is a software-based tool that continually monitors network traffic from a server or workstation attached to the network.
Responda
-
a. network monitor
-
b. sniffer
-
c. protocol analyzer
-
d. multimeter
Questão 30
Questão
The ____ utility allows you to view a host’s routing table.
Responda
-
a. nbstat
-
b. pathping
-
c. nslookup
-
d. route
Questão 31
Questão
Which of the following is a valid IP public address for use by a host on a LAN?
Responda
-
a. 10.2.256.5
-
b. 200.0.0.1
-
c. 192.168.10.5
-
d. 127.0.0.1
Questão 32
Questão
The result from ANDing 11110101 with 10111100 is ____.
Responda
-
a. 11111101
-
b. 10111101
-
c. 10110100
-
d. 01001010
Questão 33
Questão
What is the default administrative distance of static routes?
Questão 34
Questão
What is an Autonomous System in the context of internetworking?
Responda
-
a. A system that functions independently without external intervention
-
b. A group of routers under a common administration
-
c. A group of routers that have routes to every member of the group
-
d. A group of routers that can be configured by simply changing the settings in any one member
Questão 35
Questão
What does a layer 2 switch do when it receives a broadcast frame from one of the hosts connected to it?
Responda
-
a. Forwards it to all the other hosts connected to the switch
-
b. Examines the TTL field in the header and if the value is not 0, forwards it to all the other hosts on the switch
-
c. Discards it
-
d. A and B
Questão 36
Questão
When would static NAT be used over dynamic NAT?
Responda
-
a. When there is only a single public IP address available
-
b. When a router does not support NAT
-
c. When a server requires a fixed Global IP address
-
d. To assign an IP address from an IP address pool
Questão 37
Questão
Because WAN connections require routers or other Layer 3 devices to connect locations, their links are not capable of carrying ____ protocols.
Responda
-
a. open
-
b. standard
-
c. routable
-
d. nonroutable
Questão 38
Questão
A(n) ____ is the place where a telephone company terminates lines and switches calls between different locations.
Questão 39
Questão
The portion of the PSTN that connects any residence or business to the nearest CO is known as the ____.
Questão 40
Questão
Repeaters operate in the ____ layer of the OSI model.
Responda
-
a. Physical
-
b. Network
-
c. Transport
-
d. Session
Questão 41
Questão
A ____ can interpret physical addressing information.
Responda
-
a. repeater
-
b. tranciever
-
c. hub
-
d. bridge
Questão 42
Questão
Switches can create ____ by grouping a number of ports into a broadcast domain.
Responda
-
a. trunks
-
b. spanning trees
-
c. gateways
-
d. VLANs
Questão 43
Questão
____ routing is a technique in which a network administrator programs a router to use specific paths between nodes.
Responda
-
a. Static
-
b. Dynamic
-
c. Best path
-
d. Link-state
Questão 44
Questão
A complex combination of topologies is known as a ____ topology.
Responda
-
a. mixed
-
b. hybrid
-
c. compound
-
d. mulitpart
Questão 45
Questão
The most common logical topologies are ____ and ring.
Responda
-
a. bus
-
b. star
-
c. wired
-
d. hybrid
Questão 46
Questão
Within Ethernet frame types, the ____ signals to the receiving node that data is incoming and indicates when the data flow is about to begin.
Responda
-
a. FCS
-
b. header
-
c. preamble
-
d. frame
Questão 47
Questão
In a ____ attack, a person redirects or captures secure transmissions as they occur.
Responda
-
a. denial-of service
-
b. man-in-the-middle
-
c. war driving
-
d. phishing
Questão 48
Questão
____ software searches a node for open ports.
Responda
-
a. Phishing
-
b. Sniffing
-
c. Authentication
-
d. Port scanner
Questão 49
Questão
A ____ main function is to examine packets and determine where to direct them based on their Network layer addressing information.
Responda
-
a. switch’s
-
b. gateway’s
-
c. router’s
-
d. proxy server’s
Questão 50
Questão
____ attack occurs when a hacker tries numerous possible character combinations to find the key that will decrypt encrypted data.
Responda
-
a. flashing
-
b. denial-of-service
-
c. dictionary
-
d. brute force
Questão 51
Questão
The combination of a public key and a private key is known as a ____.
Responda
-
a. key lock
-
b. key frame
-
c. key pair
-
d. key set
Questão 52
Questão
RADIUS and TACACS belong to a category of protocols known as AAA (____).
Responda
-
a. access, authorization, and accounting
-
b. authentication, authorization, and accounting
-
c. authentication, authorization, and authority
-
d. authentication, authorization, and access
Questão 53
Questão
Standards define the ____ performance of a product or service.
Responda
-
a. ideal
-
b. most acceptable
-
c. minimum acceptable
-
d. maximum acceptable
Questão 54
Questão
In which OSI model layer(s) do NICs operate?
Questão 55
Questão
A(n) ____ number is the address on a host where an application makes itself available to incoming or outgoing data.
Responda
-
a. port
-
b. source
-
c. destination
-
d. sequence
Questão 56
Questão
The protocol that enables TCP/IP to internetwork - that is, to traverse more than one LAN segment and more than one type of network through a router is ____.
Responda
-
a. TCP
-
b. ICMP
-
c. UDP
-
d. IP
Questão 57
Questão
In IPv6, each address contains a(n) ____, or a variable-length field at the beginning of the address that indicates what type of address it is.
Responda
-
a. Variable Prefix
-
b. Address Prefix
-
c. Format Prefix
-
d. Field Prefix
Questão 58
Questão
In IPv4 addressing, a node with an IP address of 128.64.88.20 belongs to a Class ____ network.
Questão 59
Questão
Which of the following best describes the definition of administrative distance?
Responda
-
a. Measure of the trustworthiness of the source of a route update
-
b. The number of hops to a destination node recorded in the routing table
-
c. The maximum number of hops for a routing protocol which is used to set the TTL value in an IP packet
-
d. Distance to the closest network administrator
Questão 60
Questão
Which of the following statements is true regarding CSMA/CD after a collision has occurred?
Responda
-
a. Each device waits for a random backoff period before attempting to retransmit
-
b. Both stations stop transmitting immediately
-
c. The devices involved in the collision have priority to transmit data
-
d. The device with the highest priority will attempt to retransmit first
Questão 61
Questão
The decimal number 782 converted to binary is
Responda
-
a. 1010001000
-
b. 10000000110
-
c. 11100011100
-
d. 1100001110
Questão 62
Questão
64. When signals may travel in both directions over a medium but only in one direction at a time, the transmission is considered ____.
Responda
-
a. simplex
-
b. multiplex
-
c. half-duplex
-
d. full-duplex
Questão 63
Questão
Which network model ensures that no computer on the network has more authority than another?
Responda
-
a. client/server
-
b. stand alone
-
c. peer-to-peer
-
d. distributed
Questão 64
Questão
____ networks are the most popular type of network for medium- and large-scale organizations.
Responda
-
a. Client/server
-
b. Peer-to-peer
-
c. Stand-alone
-
d. Stationary
Questão 65
Questão
A ____ network is confined to a relatively small space.
Responda
-
a. NAN
-
b. MAN
-
c. WAN
-
d. LAN
Questão 66
Questão
Which network topology is the most common?
Responda
-
a. ring
-
b. star
-
c. hybrid
-
d. Ethernet
Questão 67
Questão
Which OSI model layer initiates the flow of information?
Responda
-
a. Physical
-
b. Session
-
c. Application
-
d. Presentation
Questão 68
Questão
Which OSI model layer manages data encryption?
Responda
-
a. Physical
-
b. Session
-
c. Application
-
d. Presentation
Questão 69
Questão
Which type of protocol is useful when data must be transferred quickly?
Responda
-
a. connection-oriented
-
b. connectionless
-
c. TCP
-
d. IP
Questão 70
Questão
____ is the process of reconstructing segmented data.
Responda
-
a. Reassembly
-
b. Reengineering
-
c. Resegmenting
-
d. Realigning
Questão 71
Questão
The process of determining the best path from Point A on one network to Point B on another is known as ____.
Responda
-
a. mapping
-
b. enhancing
-
c. reconfiguring
-
d. routing
Questão 72
Questão
In which OSI model layer does IP operate?
Responda
-
a. Physical
-
b. Transport
-
c. Network
-
d. Data Link
Questão 73
Questão
Which Data Link sublayer manages flow control?
Responda
-
a. LLC
-
b. MAC
-
c. Management layer
-
d. Addressing layer
Questão 74
Questão
Which Data Link sublayer manages access to the physical medium?
Responda
-
a. LLC
-
b. MAC
-
c. Management layer
-
d. Addressing layer
Questão 75
Questão
When signals are free to travel in both directions over a medium simultaneously, the transmission is considered ____.
Responda
-
a. simplex
-
b. multiplex
-
c. half-duplex
-
d. full-duplex
Questão 76
Questão
When signals may travel in only one direction over a medium, the transmission is considered ____.
Responda
-
a. simplex
-
b. multiplex
-
c. half-duplex
-
d. full-duplex
Questão 77
Questão
The most significant factor in choosing a transmission method is its ____.
Responda
-
a. noise
-
b. attenuation
-
c. throughput
-
d. latency
Questão 78
Questão
The more twists per foot in a pair of wires, the more resistant the pair will be to ____.
Responda
-
a. throughput
-
b. attenuation
-
c. cross talk
-
d. latency
Questão 79
Questão
TCP is a(n) ____ protocol.
Responda
-
a. open-ended
-
b. indiscriminating
-
c. connection-oriented
-
d. connectionless
Questão 80
Questão
____ is more efficient than TCP for carrying messages that fit within one data packet.
Responda
-
a. IP
-
b. UDP
-
c. ICMP
-
d. IGMP
Questão 81
Questão
In the TCP/IP protocol suite, ____ is the core protocol responsible for logical addressing.
Responda
-
a. TCP
-
b. UDP
-
c. IP
-
d. ARP
Questão 82
Questão
In IPv4 addressing, each public IP address is a unique ____ number.
Responda
-
a. 12-bit
-
b. 32-bit
-
c. 64-bit
-
d. 128-bit
Questão 83
Questão
In IPv4 addressing, a node with an IP address of 168.34.88.29 belongs to a Class ____ network.
Questão 84
Questão
In IPv4 addressing, an IP address whose first octet is in the range of 192–223 belongs to a Class ____ network.
Questão 85
Questão
The default subnet mask for a Class B network is ____.
Responda
-
a. 255.0.0.0
-
b. 255.255.0.0
-
c. 255.255.255.0
-
d. 255.255.255.255
Questão 86
Questão
A(n) ____ address represents any one interface from a group of interfaces, any one of which can accept a transmission.
Responda
-
a. anycast
-
b. unicast
-
c. multicast
-
d. singlecast
Questão 87
Questão
All Ethernet networks, independent of their speed or frame type, use an access method called ____.
Responda
-
a. CSMA
-
b. CSMA/DC
-
c. CSAM/CD
-
d. CSMA/CD
Questão 88
Questão
A ____ occurs when two transmissions interfere with each other.
Responda
-
a. jam
-
b. collision
-
c. carrier sense
-
d. multiple access event
Questão 89
Questão
Together, the FCS and the header make up the ____-byte “frame” for the data.
Questão 90
Questão
In addition to viewing its LEDs and using a loopback plug to test a NIC’s functionality, you can also check a NIC’s connectivity with ____.
Responda
-
a. simple commands
-
b. special clients
-
c. special switches
-
d. special software
Questão 91
Questão
Traditional switches operate at the ____ layer of the OSI model.
Responda
-
a. Physical
-
b. Data link
-
c. Network
-
d. Session
Questão 92
Questão
____ are combinations of networking hardware and software that connect two dissimilar kinds of networks.
Responda
-
a. Routers
-
b. Switches
-
c. Gateways
-
d. Broadcast domains
Questão 93
Questão
The ____ encompasses the entire telephone system, from the wires that enter homes and businesses to the network centers that connect different regions of a country.
Responda
-
a. SLIP
-
b. POTS
-
c. PPP
-
d. PSTN
Questão 94
Questão
____ means that a telephone company connects residential users to its network with fiber-optic cable.
Responda
-
a. OLT
-
b. FITL
-
c. PON
-
d. FITH
Questão 95
Questão
A class ____ network class is reserved for special purposes.
Questão 96
Questão
In classful addressing, the Class B IPv4 address network ID is located in the ____.
Responda
-
a. last 8 bits
-
b. last 16 bits
-
c. first 8 bits
-
d. first 16 bits
Questão 97
Questão
In classful addressing, Class C IPv4 address host information is located in the ____.
Responda
-
a. last 8 bits
-
b. last 16 bits
-
c. first 8 bits
-
d. first 16 bits
Questão 98
Questão
Within a classful addressing, ____ is the default subnet mask for a Class C address.
Responda
-
a. 255.255.255.255
-
b. 255.255.255.0
-
c. 255.255.0.0
-
d. 255.0.0.0
Questão 99
Questão
The result from ANDing 11001111 with 10010001 is ____.
Responda
-
a. 11001111
-
b. 10010001
-
c. 10000001
-
d. 00000001
Questão 100
Questão
____ is a social engineering practice in which a person attempts to glean access or authentication information by posing as someone who needs that information.
Responda
-
a. Cracking
-
b. Hacking
-
c. War driving
-
d. Phishing
Questão 101
Questão
A ____ attack occurs when a system becomes unable to function because it has inundated with requests for services and can’t respond to any of them.
Responda
-
a. flashing
-
b. denial-of-service
-
c. war driving
-
d. phishing
Questão 102
Questão
A ____ firewall is a router (or a computer installed with software that enables it to act as a router) that examines the header of every packet of data it receives to determine whether that type of packet is authorized to continue to its destination.
Responda
-
a. packet-filtering
-
b. gateway
-
c. proxy
-
d. selective
Questão 103
Questão
An administrator should take the time to troubleshoot all network problems correctly by asking specific questions designed to identify the problem ____.
Responda
-
a. intensity
-
b. background
-
c. scope
-
d. focus
Questão 104
Questão
To take advantage of network monitoring and analyzing tools, the network adapter installed in the machine running the software must support ____ mode.
Responda
-
a. open
-
b. static
-
c. promiscuous
-
d. continuous
Questão 105
Questão
____ are frames that are not actually data frames, but aberrations caused by a device misinterpreting stray voltage on the wire.
Responda
-
a. Jabbers
-
b. Ghosts
-
c. Giants
-
d. Runts
Questão 106
Questão
A ____ usually results from a bad NIC.
Responda
-
a. jabber
-
b. ghost
-
c. giant
-
d. runt
Questão 107
Questão
A ____ can generate traffic in an attempt to reproduce a network problem and monitor multiple network segments simultaneously
Questão 108
Questão
110. Which of the following is a valid IP address for use by a host on a LAN?
Responda
-
a. 10.2.257.5
-
b. 127.0.0.1
-
c. 192.168.10.5
-
d. 227.125.5.25
Questão 109
Questão
Which of the following is a valid IP address for use by a host on a LAN?
Responda
-
a. 10.256.255.5
-
b. 127.0.0.1
-
c. 227.125.5.25
-
d. None of the above