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CCNA - 2

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
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 the function of the DLL?
It provides for the exchange of data over a common local media.
A. larger address space b. data types and classes of service c. authentication and encryption
A. application b. services
A. replace a switch w/ a router b. subnet the new networks

2. 3 properties of peer-2-peer applications
Rollover cable
A. performance degradation b. security issues c. host identification
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
To enable a receiving host to forward the data to the appropriate application.

3. When is a straight-through cable used in a network?
When connecting a host to a switch.
Signal loss can be experienced.
0 to 1023
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

4. 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. netstat -r b. route PRINT
172.16.192.160
8
Hosts return to listen-before-transmit mode.

5. What 2 type of cables would most commonly be used for new runs?
A. hot keys b. context-sensitive c. command syntax check
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
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
A. Cat5 UTP b. Cat6 UTP

6. What is the role of MTA in handling email?
A. if destination network is directly connected - router forwards packet to destination host b. if no route exists for the destination and the default route is present - packet if fowarded to the next-hop c. if the originating host has a default gate
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. copper UTP b. optical fiber

7. What are 2 protocols for transfering web resources?
A. addressing b. error detection c. frame delimiting
The address of the router that the host will use to 'get to the other side'.
A. HTTP b. HTTPS
Source Port

8. What makes fiber preferable to copper for interconnecting buildings?
A. media sharing b. logical topology
IP is not properly installed
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
It reduces unnecessary broadcasts.

9. What are 3 pieces of info about a route contained in a routing table?
FTP
Is used by the server to resolve names.
A. next-hop b. metric/interface c. destination network address
No collisions will occur on this link.

10. What is dinamically selected by the source host when forwarding data?
The address of the router that the host will use to 'get to the other side'.
Source Port
To enable a receiving host to forward the data to the appropriate application.
A. netstat -r b. route PRINT

11. How many bits make up an IPv4 address?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
32 bits
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
A. Cat5 UTP b. Cat6 UTP

12. 3 primary functions of the data link layer encapsulation
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. addressing b. error detection c. frame delimiting
Network Layer
80 (HTTP)

13. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
Network portion
A. media sharing b. logical topology
A random delay helps prevent the stations from experiencing another collision during transmission.
A backbone cable.

14. What device can check for faults - integrity and performance of media?
UTP
OTDR
A. application b. services
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

15. 3 terms that define the forms of help available within the Cisco IOS
When connecting a host to a switch.
A. hot keys b. context-sensitive c. command syntax check
Window Size
Rollover cable

16. 3 functions of the upper data link sublayer in the OSI model
A. low overhead b. connectionless
A. MTA b. SMTP
A. they initiate data exchanges b. they may upload data to servers
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

17. Statements that describe LAN
Source and Destination IP address
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Collisions can decrease network performance.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

18. When do changes take effect in a Cisco router?
As the commands are entered.
A. DNS b. SMTP c. POP
Host mobility
A. HTTP b. HTTPS

19. What causes crosstalk within cable pairs when using UTP?
The magnetic field around the adjacent pairs of wire.
To enable a receiving host to forward the data to the appropriate application.
Rollover cable
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

20. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
255.255.255.224
A default gateway (router).
It uses support from the lower layers to distinguish between connections to the service.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

21. What is a default gateway address?

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22. What is a protocol that provides connectionless network layer services?
IP Protocol
A. physical layer b. DLL layer
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. replace a switch w/ a router b. subnet the new networks

23. What statements describe the logical token-passing topology?
A. it has centralized administration b. security is easier to enforce
Next-Hop Address
Any device whose backoff timer expires first.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

24. 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?
Network Media Control
Host A
Fiber
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

25. If you have a small network w/ 3 computers...
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Console
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
Switch

26. What information is added during encapsulation at OSI Layer 3?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Source and Destination IP address
A. next-hop b. metric/interface c. destination network address
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

27. At which layer of the TCP/IP model does ethernet operate?
Router
Network Access
A. Cat5 UTP b. Cat6 UTP
SSH

28. What is the proper order of the OSI Layers?
Hub
Host mobility
A. application b. presentation c. session d. transmision e. network f. data link g. physical
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

29. 3 statements about the role of routers in the network
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
It uses support from the lower layers to distinguish between connections to the service.
80 (HTTP)
A. if destination network is directly connected - router forwards packet to destination host b. if no route exists for the destination and the default route is present - packet if fowarded to the next-hop c. if the originating host has a default gate

30. 2 most commonly used media types in ethernet networks
A. enable mode b. priviledge executive mode
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. physical layer b. DLL layer
A. copper UTP b. optical fiber

31. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Is used by the server to resolve names.
A. MTA b. SMTP
They must wait until the first hosts finish transfering the media.
Window Size

32. 2 characteristics of peer-2-peer
A. replace a switch w/ a router b. subnet the new networks
A. decentralized resources b. resource sharing w/o a dedicated server
Identify processes or services that are communicating with end devices.
It uses lasers as the light source.

33. What are 2 commands used to view a host routing table?
A. netstat -r b. route PRINT
Network address
A. goodput b. throughput c. bandwidth
Binary ANDing

34. What are the advantages of using a client-server model?
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. it has centralized administration b. security is easier to enforce
Signal loss can be experienced.

35. What are 2 forms of application layer software?
A random delay helps prevent the stations from experiencing another collision during transmission.
A. application b. services
The magnetic field around the adjacent pairs of wire.
Identify the device that allows local network computers to communicate w/ devices in other networks.

36. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
A. the device will still operate at the same Layer 2 address (the address it had before) b. Layer 3 address must me reassigned for it to communicate w/ the network
The address of the router that the host will use to 'get to the other side'.
A random delay helps prevent the stations from experiencing another collision during transmission.
Switch

37. What type of routing uses information that is manually entered into the routing table?
Static
UTP
When connecting a host to a switch.
A. flow control b. session establishment c. numbering and sequencing

38. There are too many broadcasts on switches - what can be done?
To facilitate the entry and exit of data on media.
A. replace a switch w/ a router b. subnet the new networks
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A random delay helps prevent the stations from experiencing another collision during transmission.

39. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Transport
Router(config)# interface FastEthernet 0/1
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Switch

40. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
FTP
Supports error detection.
A. Physical b. Data Link
IP is not properly installed

41. What can you identify when you examine the Network Layer header?
Network Layer
The destination host address.
Minimal delays in data delivery.
The address of the router that the host will use to 'get to the other side'.

42. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Hub
A. decentralized resources b. resource sharing w/o a dedicated server
As the commands are entered.
A. the router will discard the packet b. the router will send a time exceeded message to the source host

43. Why are port numbers included in the TCP header of a segment?
To enable a receiving host to forward the data to the appropriate application.
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
Supports error detection.
255.255.255.0

44. What are 2 common characteristics associated w/ dynamic routing protocols?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
To prevent the receiver from being overwhelmed by incoming data.
It reduces unnecessary broadcasts.
Static

45. Group of hosts that have identical bit patterns in the high order bits of their addresses
Resolve IPv4 addresses to MAC addresses.
Hub
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Network

46. When destination network is not in the routing table - What are 2 actions the router might take?
Wireless
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Network portion
Network Layer Packet

47. What are 3 common problems w/ large networks?
A. physical layer b. DLL layer
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. the device will still operate at the same Layer 2 address (the address it had before) b. Layer 3 address must me reassigned for it to communicate w/ the network
A. perform degradation b. security issues c. host identification

48. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
A. performance degradation b. security issues c. host identification
FTP
A. netstat -r b. route PRINT
IP is not properly installed

49. What command can be used to determine if the router has experienced any input or output errors?
Hub
When connecting a host to a switch.
Collisions can decrease network performance.
Show Interfaces

50. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
RJ-45
A. it has centralized administration b. security is easier to enforce
255.255.255.0
Logical Link Control sublayer