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. In a connectionless system - What is correct?
Supports error detection.
Destination is not contacted before a packet is sent.
To facilitate the entry and exit of data on media.
32 bits

2. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
Originate data flow.
Time-to-live (TTL)
UTP
Hosts return to listen-before-transmit mode.

3. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
A. router b. firewall
Static
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Fiber

4. During a TCP session - if packets arrive out of order - what will happen?
A. netstat -r b. route PRINT
The packets will be delivered and reassembled at destination.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Rollover cable

5. 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
IP Protocol
Supports error detection.
Source Port
A. the router will discard the packet b. the router will send a time exceeded message to the source host

6. Intermediary devices used to implement security between networks
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. show startup-config b. show running-config
Network Layer Packet
A. router b. firewall

7. Which device is used to create or divide broadcast domains?
Network address
SMB
Router
OTDR

8. 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
Fiber
A. hot keys b. context-sensitive c. command syntax check
When connecting a host to a switch.

9. What statements describe the logical token-passing topology?
A. flow control b. session establishment c. numbering and sequencing
A. goodput b. throughput c. bandwidth
A. purpose b. geographic location c. ownership
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

10. What information is added during encapsulation at OSI Layer 3?
A. minimizing of collisions b. division into broadcast domains
Switch
Source and Destination IP address
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

11. What command can be used to determine if the router has experienced any input or output errors?
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
A. netstat -r b. route PRINT
Show Interfaces

12. If you have a small network w/ 3 computers...
Transport
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
Host A

13. 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?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
They must wait until the first hosts finish transfering the media.
Show Interfaces
A. DB 60 b. Winchester 15-pin c. smart serial

14. If there is a graphic representation of a company network wiring and equipment - What is this called?
Rollover cable
As the commands are entered.
A physical topology.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

15. What can you identify when you examine the Network Layer header?
No collisions will occur on this link.
TCP initializes the sequence numbers for the sessions.
The destination host address.
Any device whose backoff timer expires first.

16. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
Destination Network Address
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Originate data flow.
A. DB 60 b. Winchester 15-pin c. smart serial

17. 3 features that allow TCP to realibly and accurately track the transmission of data
A. flow control b. session establishment c. numbering and sequencing
A. performance degradation b. security issues c. host identification
A. they initiate data exchanges b. they may upload data to servers
Network portion

18. 3 primary functions of the data link layer encapsulation
Twisting of the cables
It provides interface between applications on either end of the network.
A. addressing b. error detection c. frame delimiting
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

19. What is a benefit of a WAN?
Host mobility
A backbone cable.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Window Size

20. 2 most commonly used media types in ethernet networks
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
Destination is not contacted before a packet is sent.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. copper UTP b. optical fiber

21. What causes crosstalk within cable pairs when using UTP?
The magnetic field around the adjacent pairs of wire.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. application b. services
The address of the router that the host will use to 'get to the other side'.

22. What determines the method of media access control?
A. DNS b. SMTP c. POP
A. goodput b. throughput c. bandwidth
32 bits
A. media sharing b. logical topology

23. 3 factors that should be considered when implementing Layer 2 protocols
A. Physical b. Data Link
Identify processes or services that are communicating with end devices.
A random delay helps prevent the stations from experiencing another collision during transmission.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

24. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
SMB
Network Access
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
FTP

25. 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. show startup-config b. show running-config
A. hot keys b. context-sensitive c. command syntax check
A. router b. firewall
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

26. What characteristic of an UTP helps reduce interference?
A. netstat -r b. route PRINT
To enable a receiving host to forward the data to the appropriate application.
A. minimizing of collisions b. division into broadcast domains
Twisting of the cables

27. What info is found in the TCP and UDP header info?
Flash
Supports error detection.
Source and Destination Ports
A default gateway (router).

28. What do end devices do?
Router(config)# interface FastEthernet 0/1
Physical
Originate data flow.
Identify processes or services that are communicating with end devices.

29. There are too many broadcasts on switches - what can be done?
It provides for the exchange of data over a common local media.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. it has centralized administration b. security is easier to enforce
A. replace a switch w/ a router b. subnet the new networks

30. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
Binary ANDing
0 to 1023
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. Cat5 UTP b. Cat6 UTP

31. What is a characteristic of a single-mode fiber-optic cable?
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
Binary ANDing
Console interface
It uses lasers as the light source.

32. How many bits make up an IPv4 address?
32 bits
A. hot keys b. context-sensitive c. command syntax check
Network Layer
They must wait until the first hosts finish transfering the media.

33. 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. 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
Host A
A. addressing b. error detection c. frame delimiting
Identify the device that allows local network computers to communicate w/ devices in other networks.

34. How does the application layer on a server process multiple client requests for services?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Network Access
It uses support from the lower layers to distinguish between connections to the service.
Static

35. What is the proper order of the OSI Layers?
It has expanded adressing capabilities.
It uses lasers as the light source.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Ctrl + Shift + 6

36. What type of routing uses information that is manually entered into the routing table?
A. decentralized resources b. resource sharing w/o a dedicated server
Rollover cable
Static
Supports error detection.

37. Which characteristics describe fiber optic cable?
TCP initializes the sequence numbers for the sessions.
UDP
When connecting a host to a switch.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

38. What layer encapsulates segments into packets?
Network Layer
A. physical layer b. DLL layer
A. goodput b. throughput c. bandwidth
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

39. What command is used to change the default name to 'Costas'?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Router(config)# hostname Costas
Binary ANDing
A. router b. firewall

40. What connectors are commonly associated w/ Cisco's V.35 serial cables?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. DB 60 b. Winchester 15-pin c. smart serial
A. larger address space b. data types and classes of service c. authentication and encryption
When connecting a host to a switch.

41. 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.
255.255.255.224
It does not support encryption.
Flash

42. What can be a problem that is reduced by adding end-to-end addressing?
255.255.255.0
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
It reduces unnecessary broadcasts.

43. What is the purpose of resource records in DNS?
Router(config)# interface FastEthernet 0/1
Is used by the server to resolve names.
A default gateway (router).
A. physical layer b. DLL layer

44. Why are port numbers included in the TCP header of a segment?
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
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Is a layer of specific encapsulation.
To enable a receiving host to forward the data to the appropriate application.

45. What are 3 common problems w/ large networks?
A. perform degradation b. security issues c. host identification
To enable a receiving host to forward the data to the appropriate application.
To facilitate the entry and exit of data on media.
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

46. What are 2 features of User Diagram Protocol (UDP)?
A. low overhead b. connectionless
Show Interfaces
A. decentralized resources b. resource sharing w/o a dedicated server
255.255.255.224

47. What do the intermediary devices in the network do?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
255.255.255.224
Transport
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

48. What correctly describes a MAC address?
A. perform degradation b. security issues c. host identification
The packets will be delivered and reassembled at destination.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Network Layer

49. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
Ctrl + Shift + 6
A. application b. presentation c. session d. transmision e. network f. data link g. physical
UTP
0 to 1023

50. Where is the IOS file stored at?
A. they initiate data exchanges b. they may upload data to servers
Flash
Hosts return to listen-before-transmit mode.
OTDR