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CCNA - 2

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. What is a characteristic of a logical point-to-point topology?
A. it has centralized administration b. security is easier to enforce
The MAC protocol can be very simple.
IP Protocol
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

2. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
255.255.255.0
Show Interfaces
A. hot keys b. context-sensitive c. command syntax check
A. the router will discard the packet b. the router will send a time exceeded message to the source host

3. An admin needs to keep contents private - which access method should he use?
Destination Network Address
Source Port
SSH
Rollover cable

4. 3 factors that should be considered when implementing Layer 2 protocols
It reduces unnecessary broadcasts.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
To facilitate the entry and exit of data on media.

5. What makes fiber preferable to copper for interconnecting buildings?
UDP
0 to 1023
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Application Layer

6. If you have a PC - 3 routers and a Laptop... How many unique CRC calculation will take place as traffic routes from the PC to the Laptop?
Any device whose backoff timer expires first.
8
Logical Link Control sublayer
MAC

7. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
A. Cat5 UTP b. Cat6 UTP
UDP
It uses lasers as the light source.
The address of the router that the host will use to 'get to the other side'.

8. In business LANs - which connector is used w/ twisted-pair networking cable?
A. ethernet utilizes CSMA/CD b. defined as placement of data frames on the media c. DLL protocols define the rules for access to different media
RJ-45
Application Layer
A. servers b. routers c. network printers

9. Which 2 options represent Layer 4 addressing?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. security is difficult to enforce b. if one of the computers is responding to file sharing requests - that computer is functioning as a server
The address of the router that the host will use to 'get to the other side'.

10. What is a protocol that provides connectionless network layer services?
To enable a receiving host to forward the data to the appropriate application.
Any device whose backoff timer expires first.
A. DNS b. SMTP c. POP
IP Protocol

11. What describes the purpose of default route?
A. DB 60 b. Winchester 15-pin c. smart serial
A. netstat -r b. route PRINT
Time-to-live (TTL)
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

12. 3 functions of the upper data link sublayer in the OSI model
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
To prevent the receiver from being overwhelmed by incoming data.
UTP

13. What is the purpose of the TCP/IP Network Application Layer?
A. decentralized resources b. resource sharing w/o a dedicated server
A. acts as both client and server w/ same communication b. hybrid mode includes a centralized directory of files c. can be used in client-server networks
It has expanded adressing capabilities.
Network Media Control

14. What is PDU?
IP Protocol
Source and Destination Ports
Destination Network Address
Is a layer of specific encapsulation.

15. 3 protocols that operate in the application layer
It provides for the exchange of data over a common local media.
DNS
A. DNS b. SMTP c. POP
Rollover cable

16. What information is added during encapsulation at OSI Layer 3?
Network
Source and Destination IP address
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Hub

17. What are 3 common problems w/ large networks?
Physical
A. acts as both client and server w/ same communication b. hybrid mode includes a centralized directory of files c. can be used in client-server networks
A. perform degradation b. security issues c. host identification
The physical address is added.

18. What 2 type of cables would most commonly be used for new runs?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Network address
Rollover cable
A. Cat5 UTP b. Cat6 UTP

19. What are 2 email components used to forward mail between servers?
A. MTA b. SMTP
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Is used by the server to resolve names.
Any device whose backoff timer expires first.

20. 3 common problems w/ a large network
A. performance degradation b. security issues c. host identification
Is a layer of specific encapsulation.
A. servers b. routers c. network printers
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

21. What are 2 common characteristics associated w/ dynamic routing protocols?
Destination Network Address
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Source and Destination Ports
A random delay helps prevent the stations from experiencing another collision during transmission.

22. 2 things that will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Ctrl + Shift + 6
A. the router will discard the packet b. the router will send a time exceeded message to the source host

23. In a connectionless system - What is correct?
Destination is not contacted before a packet is sent.
Network Media Control
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Supports error detection.

24. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
A. media sharing b. logical topology
Next-Hop Address
OTDR
Window Size

25. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Router(config)# interface FastEthernet 0/1
OTDR
A. MTA b. SMTP
SMB

26. 3 statements of media acess control
A. ethernet utilizes CSMA/CD b. defined as placement of data frames on the media c. DLL protocols define the rules for access to different media
SSH
Console interface
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

27. Important characteristic of UDP
A. application b. services
UTP
Minimal delays in data delivery.
DNS

28. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
SSH
A. application b. services
Supports error detection.
Transport

29. When is a straight-through cable used in a network?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Window Size
When connecting a host to a switch.
Source and Destination IP address

30. 3 statements about the role of routers in the network
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. performance degradation b. security issues c. host identification
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Source and Destination IP address

31. What is a component of a routing table entry?
Identify processes or services that are communicating with end devices.
A. larger address space b. data types and classes of service c. authentication and encryption
Next-Hop Address
Originate data flow.

32. What does the IEEE 802.2 standard represent in Ethernet technologies?
Collisions can decrease network performance.
Identify the device that allows local network computers to communicate w/ devices in other networks.
Logical Link Control sublayer
SMB

33. What type of network cable is used between a terminal and a console port?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. low overhead b. connectionless
A. HTTP b. HTTPS
Rollover cable

34. What statements describe the logical token-passing topology?
A. perform degradation b. security issues c. host identification
Network Media Control
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. larger address space b. data types and classes of service c. authentication and encryption

35. What do you need to use for an initial configuration on a Cisco router?
A. security is difficult to enforce b. if one of the computers is responding to file sharing requests - that computer is functioning as a server
Identify processes or services that are communicating with end devices.
Ctrl + Shift + 6
Console interface

36. What are the advantages of using a client-server model?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. identifies pieces of data as part of the same communication b. ensures the data pieces can be directed to the correct receiving end device
Ctrl + Shift + 6
A. it has centralized administration b. security is easier to enforce

37. What are key considering factors when grouping hosts into common networks?
A. purpose b. geographic location c. ownership
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Source Port
255.255.255.0

38. What determines the method of media access control?
Next-Hop Address
A. media sharing b. logical topology
The physical address is added.
A. enable mode b. priviledge executive mode

39. Statements that describe LAN
When connecting a host to a switch.
It does not support encryption.
The packets will be delivered and reassembled at destination.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

40. What event occurs during the 3-way handshake?
A. private addresses are blocked from public internet by routers b. the ip address 127.0.0.1 is the loopback - directs traffic to itself
Is a layer of specific encapsulation.
The packets will be delivered and reassembled at destination.
TCP initializes the sequence numbers for the sessions.

41. A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
A backbone cable.
Network
172.16.192.160
The magnetic field around the adjacent pairs of wire.

42. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Network address
Identify the device that allows local network computers to communicate w/ devices in other networks.
255.255.255.0
32 bits

43. If host A's DG is 10.0.0.1 and host B's DG is 10.0.0.2 - when the router's IP address is 10.0.0.1. Which one will go through?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
As the commands are entered.
Host A

44. 2 functions of encapsulation
It has expanded adressing capabilities.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
It provides interface between applications on either end of the network.
A. identifies pieces of data as part of the same communication b. ensures the data pieces can be directed to the correct receiving end device

45. 3 characteristics of valid Ethernet Layer 2 addresses
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Is used by the server to resolve names.
FTP
Window Size

46. What is a default gateway address?

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47. What is the function of the DLL?
It provides for the exchange of data over a common local media.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
80 (HTTP)
Originate data flow.

48. If there is a graphic representation of a company network wiring and equipment - What is this called?
As the commands are entered.
A physical topology.
A. perform degradation b. security issues c. host identification
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

49. 3 properties of peer-2-peer applications
A. acts as both client and server w/ same communication b. hybrid mode includes a centralized directory of files c. can be used in client-server networks
SMB
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
It uses lasers as the light source.

50. At which layer of the TCP/IP model does ethernet operate?
Source and Destination Ports
A random delay helps prevent the stations from experiencing another collision during transmission.
Network Access
A. replace a switch w/ a router b. subnet the new networks

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CCNA - 2

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