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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. 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
Identify processes or services that are communicating with end devices.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Destination is not contacted before a packet is sent.

2. What is a drawback of the CSMA/CD access method?
A. servers b. routers c. network printers
They must wait until the first hosts finish transfering the media.
The magnetic field around the adjacent pairs of wire.
Collisions can decrease network performance.

3. At which layer of the TCP/IP model does ethernet operate?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. media sharing b. logical topology
Network Access
Network Media Control

4. 3 statements about the role of routers in the network
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Network
A. application b. services
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

5. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Window Size
172.16.192.160
Wireless
Next-Hop Address

6. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
It reduces unnecessary broadcasts.
UTP
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
A. perform degradation b. security issues c. host identification

7. 3 common problems w/ a large network
A. performance degradation b. security issues c. host identification
255.255.255.0
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
It uses support from the lower layers to distinguish between connections to the service.

8. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
Originate data flow.
IP Protocol
IP is not properly installed
It provides for the exchange of data over a common local media.

9. Network Protocols
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.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. identifies the communicating applications b. identifies multiple conversations between the hosts

10. What is the role of the OSI Application Layer?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
To prevent the receiver from being overwhelmed by incoming data.
SSH
It provides interface between applications on either end of the network.

11. Which IP packet field will prevent endless loops?
Time-to-live (TTL)
The packets will be delivered and reassembled at destination.
Flash
8

12. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
The destination host address.
Is used by the server to resolve names.
Network address

13. In business LANs - which connector is used w/ twisted-pair networking cable?
RJ-45
Fiber
Show Interfaces
Identify the device that allows local network computers to communicate w/ devices in other networks.

14. Important characteristic of UDP
A. application b. services
A. addressing b. error detection c. frame delimiting
A. Cat5 UTP b. Cat6 UTP
Minimal delays in data delivery.

15. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
FTP
Is used by the server to resolve names.
Router(config)# interface FastEthernet 0/1
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

16. What are 2 commands used to view a host routing table?
Console interface
A. media sharing b. logical topology
A. netstat -r b. route PRINT
A default gateway (router).

17. What is the proper order of the OSI Layers?
Next-Hop Address
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. DNS b. SMTP c. POP

18. Which characteristics describe fiber optic cable?
A. low overhead b. connectionless
Host A
A. not affected by EMI of RFI b. most expensive type of LAN cabling
32 bits

19. There are 4 different hosts connected to a hub - media is being transfered between 2 of them but the other 2 will also like to transfer media. What must the latest hosts do to transfer the media?
They must wait until the first hosts finish transfering the media.
A. HTTP b. HTTPS
Collisions can decrease network performance.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

20. What describes the purpose of default route?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Wireless
A. MTA b. SMTP
A. Physical b. Data Link

21. What is a component of a routing table entry?
Next-Hop Address
A. enable mode b. priviledge executive mode
Is a layer of specific encapsulation.
MAC

22. What type of routing uses information that is manually entered into the routing table?
0 to 1023
Identify processes or services that are communicating with end devices.
Static
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

23. During a TCP session - if packets arrive out of order - what will happen?
A. application b. services
The packets will be delivered and reassembled at destination.
Network Media Control
Flash

24. 2 characteristics of peer-2-peer
MAC
0 to 1023
A. decentralized resources b. resource sharing w/o a dedicated server
FTP

25. 3 factors that should be considered when implementing Layer 2 protocols
A. purpose b. geographic location c. ownership
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. router b. firewall
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

26. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
The destination host address.
Window Size
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
Switch

27. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
The destination host address.
SMB
MAC
Hosts return to listen-before-transmit mode.

28. Which layer supplies services and allows user interface?
32 bits
Destination is not contacted before a packet is sent.
Physical
Application Layer

29. When is a straight-through cable used in a network?
Wireless
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
When connecting a host to a switch.
A. HTTP b. HTTPS

30. What is a characteristic of a single-mode fiber-optic cable?
It uses lasers as the light source.
Network Layer
The MAC protocol can be very simple.
No collisions will occur on this link.

31. What is PDU?
A. low overhead b. connectionless
Router(config)# hostname Costas
Is a layer of specific encapsulation.
Router(config)# interface FastEthernet 0/1

32. What are 2 forms of application layer software?
A. decentralized resources b. resource sharing w/o a dedicated server
A. application b. services
A. it has centralized administration b. security is easier to enforce
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

33. After a routers ends its boot sequence - the admin wants to check the routers config. From the EXEC mode - which commands can the admin use?
A. servers b. routers c. network printers
A. show startup-config b. show running-config
FTP
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

34. What do end devices do?
Originate data flow.
To enable a receiving host to forward the data to the appropriate application.
Network Layer Packet
IP Protocol

35. During encapsulation - what happens in the Data Link Layer?
A. show startup-config b. show running-config
Router
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
The physical address is added.

36. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Hub
The physical address is added.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. replace a switch w/ a router b. subnet the new networks

37. How many bits make up an IPv4 address?
Console
A. decentralized resources b. resource sharing w/o a dedicated server
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
32 bits

38. 3 primary functions of the data link layer encapsulation
A. addressing b. error detection c. frame delimiting
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
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

39. What application layer protocol is used to support file transfers between client and server?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Collisions can decrease network performance.
A. physical layer b. DLL layer
FTP

40. 3 terms that define the forms of help available within the Cisco IOS
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
A. hot keys b. context-sensitive c. command syntax check
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

41. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Static
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Fiber

42. What can you identify when you examine the Network Layer header?
SMB
The destination host address.
A. DNS b. SMTP c. POP
It does not support encryption.

43. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
The physical address is added.
Flash
Host mobility
UDP

44. An admin needs to keep contents private - which access method should he use?
The address of the router that the host will use to 'get to the other side'.
They must wait until the first hosts finish transfering the media.
RJ-45
SSH

45. To make a console connection from a comp to a Cisco router - what cable should be used?
Flash
DNS
It does not support encryption.
Rollover cable

46. What is the purpose of the TCP/IP Network Application Layer?
Network Media Control
Wireless
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
The magnetic field around the adjacent pairs of wire.

47. Which type of cable is most often associated w/ fiber-optic cable?
It uses lasers as the light source.
It provides interface between applications on either end of the network.
A. flow control b. session establishment c. numbering and sequencing
A backbone cable.

48. What are 3 common problems w/ large networks?
A. servers b. routers c. network printers
A. perform degradation b. security issues c. host identification
A. router b. firewall
Transport

49. What can get you to an outside network?
UTP
A. low overhead b. connectionless
A. Physical b. Data Link
A default gateway (router).

50. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. enable mode b. priviledge executive mode
SMB
A backbone cable.
Router(config)# hostname Costas