Test your basic knowledge |

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. Which combination of keys can be used to interrupt a ping or traceroute process?
It does not support encryption.
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
Twisting of the cables

2. What are 3 common problems w/ large networks?
A. application b. services
Show Interfaces
Any device whose backoff timer expires first.
A. perform degradation b. security issues c. host identification

3. What can be a problem that is reduced by adding end-to-end addressing?
A. next-hop b. metric/interface c. destination network address
It reduces unnecessary broadcasts.
OTDR
Fiber

4. What 2 type of cables would most commonly be used for new runs?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. Cat5 UTP b. Cat6 UTP
Identify processes or services that are communicating with end devices.
Minimal delays in data delivery.

5. What is a protocol that provides connectionless network layer services?
Identify processes or services that are communicating with end devices.
A. performance degradation b. security issues c. host identification
IP Protocol
Identify the device that allows local network computers to communicate w/ devices in other networks.

6. To make a console connection from a comp to a Cisco router - what cable should be used?
A. physical layer b. DLL layer
Network Layer
It provides for the exchange of data over a common local media.
Rollover cable

7. 3 measures of data transfer
A. non-deterministic b. less overhead c. collisions exist
A. servers b. routers c. network printers
Minimal delays in data delivery.
A. goodput b. throughput c. bandwidth

8. 3 properties of peer-2-peer applications
IP Protocol
A. HTTP b. HTTPS
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. security is difficult to enforce b. if one of the computers is responding to file sharing requests - that computer is functioning as a server

9. What is a default gateway address?

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10. 2 characteristics of clients in data networks
A. they initiate data exchanges b. they may upload data to servers
Source and Destination Ports
A. HTTP b. HTTPS
Show Interfaces

11. 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?
8
A. goodput b. throughput c. bandwidth
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. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

12. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
A. non-deterministic b. less overhead c. collisions exist
UTP
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. Physical b. Data Link

13. What is the purpose of the TCP/IP Network Application Layer?
Logical Link Control sublayer
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Network Media Control
The MAC protocol can be very simple.

14. Which characteristics describe fiber optic cable?
Switch
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. not affected by EMI of RFI b. most expensive type of LAN cabling

15. 2 functions of encapsulation
Window Size
A random delay helps prevent the stations from experiencing another collision during transmission.
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
255.255.255.0

16. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
IP Protocol
A. next-hop b. metric/interface c. destination network address
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Hosts return to listen-before-transmit mode.

17. What is an automated service that matches resource names w/ required IP addresses?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Wireless
DNS
A. larger address space b. data types and classes of service c. authentication and encryption

18. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
A. media sharing b. logical topology
Physical
A default gateway (router).
MAC

19. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
When connecting a host to a switch.
Supports error detection.
SMB
A. copper UTP b. optical fiber

20. When a network service fails - which port is most often used to access a router for management purposes?
Console
A. Physical b. Data Link
A. addressing b. error detection c. frame delimiting
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

21. 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
Signal loss can be experienced.
Network Layer Packet
0 to 1023

22. What can get you to an outside network?
The packets will be delivered and reassembled at destination.
172.16.192.160
Time-to-live (TTL)
A default gateway (router).

23. In a connectionless system - What is correct?
Destination is not contacted before a packet is sent.
It has expanded adressing capabilities.
A. Physical b. Data Link
No collisions will occur on this link.

24. Which IP packet field will prevent endless loops?
Time-to-live (TTL)
Network
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Console interface

25. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
The MAC protocol can be very simple.
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. enable mode b. priviledge executive mode
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

26. statements of IP adressing
A. MTA b. SMTP
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
SSH
Any device whose backoff timer expires first.

27. When destination network is not in the routing table - What are 2 actions the router might take?
Rollover cable
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
SSH
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

28. How many bits make up an IPv4 address?
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
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
32 bits
Network Access

29. 2 characteristics of peer-2-peer
A. router b. firewall
Minimal delays in data delivery.
A. decentralized resources b. resource sharing w/o a dedicated server
Hub

30. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. DB 60 b. Winchester 15-pin c. smart serial
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Console

31. Why are port numbers included in the TCP header of a segment?
Source Port
To enable a receiving host to forward the data to the appropriate application.
UDP
Collisions can decrease network performance.

32. What do you need to use for an initial configuration on a Cisco router?
Static
Minimal delays in data delivery.
Console interface
A default gateway (router).

33. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
2046
Physical
8
Network Access

34. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Source Port
Create signals that represent the bits in each frame for the media.
Source and Destination IP address
Switch

35. What is the proper order of the OSI Layers?
Application Layer
Network Media Control
A. application b. presentation c. session d. transmision e. network f. data link g. physical
FTP

36. Statements that describe LAN
A physical topology.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Is used by the server to resolve names.
A. performance degradation b. security issues c. host identification

37. 3 terms that define the forms of help available within the Cisco IOS
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
The magnetic field around the adjacent pairs of wire.
A. hot keys b. context-sensitive c. command syntax check
It reduces unnecessary broadcasts.

38. What are 2 common characteristics associated w/ dynamic routing protocols?
They must wait until the first hosts finish transfering the media.
Application Layer
Network Access
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

39. What determines the method of media access control?
It provides for the exchange of data over a common local media.
A default gateway (router).
Destination is not contacted before a packet is sent.
A. media sharing b. logical topology

40. When is a straight-through cable used in a network?
Collisions can decrease network performance.
A. show startup-config b. show running-config
A. purpose b. geographic location c. ownership
When connecting a host to a switch.

41. What is a component of a routing table entry?
Network Media Control
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. hot keys b. context-sensitive c. command syntax check
Next-Hop Address

42. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
A random delay helps prevent the stations from experiencing another collision during transmission.
Host A
A. media sharing b. logical topology
A. physical layer b. DLL layer

43. What is a disadvantage of Telnet?
A. DNS b. SMTP c. POP
It uses support from the lower layers to distinguish between connections to the service.
It does not support encryption.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

44. What are 2 email components used to forward mail between servers?
A. MTA b. SMTP
The magnetic field around the adjacent pairs of wire.
A. larger address space b. data types and classes of service c. authentication and encryption
Console

45. What is a characteristic of a logical point-to-point topology?
The MAC protocol can be very simple.
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Logical Link Control sublayer
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

46. Which portion of the network layer address does a router use to forward packets?
It does not support encryption.
Network portion
Originate data flow.
The physical address is added.

47. What command can be used to determine if the router has experienced any input or output errors?
Show Interfaces
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Logical Link Control sublayer
The address of the router that the host will use to 'get to the other side'.

48. Where is the IOS file stored at?
A. enable mode b. priviledge executive mode
A. Cat5 UTP b. Cat6 UTP
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Flash

49. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Rollover cable
Show Interfaces
Fiber
Binary ANDing

50. 3 statements of media acess control
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
The MAC protocol can be very simple.
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. MTA b. SMTP