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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 an effect of improperly applying a network cable connector?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
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. application b. services
Signal loss can be experienced.

2. 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. the router will discard the packet b. the router will send a time exceeded message to the source host
Source Port
Create signals that represent the bits in each frame for the media.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

3. 3 protocols that operate in the application layer
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. Physical b. Data Link
A. DNS b. SMTP c. POP
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

4. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
It provides interface between applications on either end of the network.
Identify processes or services that are communicating with end devices.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. Physical b. Data Link

5. What is the primary function of encapsulating packets into frames?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Is a layer of specific encapsulation.
MAC
To facilitate the entry and exit of data on media.

6. What 2 type of cables would most commonly be used for new runs?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Logical Link Control sublayer
SMB
A. Cat5 UTP b. Cat6 UTP

7. What kind of problems are caused by excessive broadcast traffic on network segments?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Host A
Collisions can decrease network performance.
A. physical layer b. DLL layer

8. 3 primary functions of the data link layer encapsulation
Source and Destination IP address
A. addressing b. error detection c. frame delimiting
It uses lasers as the light source.
It reduces unnecessary broadcasts.

9. 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. show startup-config b. show running-config
Source Port
A. application b. presentation c. session d. transmision e. network f. data link g. physical

10. What is a characteristic of a single-mode fiber-optic cable?
A. copper UTP b. optical fiber
A. show startup-config b. show running-config
A. not affected by EMI of RFI b. most expensive type of LAN cabling
It uses lasers as the light source.

11. How many host addresses can be assigned to a subnetwork when using the 130.68.0.0 network address w/ a subnet mask of 255.255.248.0?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
2046
The magnetic field around the adjacent pairs of wire.
32 bits

12. What is the purpose of a default gateway?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
It provides for the exchange of data over a common local media.
Identify the device that allows local network computers to communicate w/ devices in other networks.
It uses lasers as the light source.

13. If you have a small network w/ 3 computers...
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. flow control b. session establishment c. numbering and sequencing
A. show startup-config b. show running-config
They must wait until the first hosts finish transfering the media.

14. What is a characteristic of a logical point-to-point topology?
Collisions can decrease network performance.
The MAC protocol can be very simple.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. goodput b. throughput c. bandwidth

15. Important characteristic of UDP
It has expanded adressing capabilities.
Minimal delays in data delivery.
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. replace a switch w/ a router b. subnet the new networks

16. What are 2 commands used to view a host routing table?
A. netstat -r b. route PRINT
No collisions will occur on this link.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. Physical b. Data Link

17. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
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
Next-Hop Address
UDP

18. If you have a full-duplex operational network - what can happen?
0 to 1023
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
No collisions will occur on this link.

19. What is the purpose of the TCP/IP Network Application Layer?
A. it has centralized administration b. security is easier to enforce
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Network Media Control
A. router b. firewall

20. What makes fiber preferable to copper for interconnecting buildings?
Rollover cable
A. router b. firewall
A. flow control b. session establishment c. numbering and sequencing
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

21. What can be a problem that is reduced by adding end-to-end addressing?
Window Size
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
It reduces unnecessary broadcasts.
2046

22. Where is the IOS file stored at?
A physical topology.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Source and Destination IP address
Flash

23. What is the purpose of the preamble in an ethernet frame?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
FTP
Originate data flow.

24. What are 2 features of User Diagram Protocol (UDP)?
A. low overhead b. connectionless
IP Protocol
Rollover cable
Host A

25. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
Rollover cable
A random delay helps prevent the stations from experiencing another collision during transmission.
0 to 1023
A. Physical b. Data Link

26. Intermediary devices used to implement security between networks
Collisions can decrease network performance.
The packets will be delivered and reassembled at destination.
A. router b. firewall
Network Layer

27. 3 functions of the upper data link sublayer in the OSI model
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Hosts return to listen-before-transmit mode.
A. non-deterministic b. less overhead c. collisions exist

28. What can get you to an outside network?
A default gateway (router).
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
Wireless

29. What characteristic of an UTP helps reduce interference?
Console
2046
Twisting of the cables
Originate data flow.

30. 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
Is used by the server to resolve names.
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
It uses lasers as the light source.

31. What is the primary reason for developing IPv6?
A. perform degradation b. security issues c. host identification
It has expanded adressing capabilities.
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
80 (HTTP)

32. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
A. addressing b. error detection c. frame delimiting
It has expanded adressing capabilities.
Switch
Is used by the server to resolve names.

33. Group of hosts that have identical bit patterns in the high order bits of their addresses
A. application b. services
Physical
Destination Network Address
Network

34. What are 2 protocols for transfering web resources?
A. physical layer b. DLL layer
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. HTTP b. HTTPS
To prevent the receiver from being overwhelmed by incoming data.

35. Why is flow control used for TCP data transfer?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
UTP
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
To prevent the receiver from being overwhelmed by incoming data.

36. What is the proper order of the OSI Layers?
UTP
To prevent the receiver from being overwhelmed by incoming data.
Binary ANDing
A. application b. presentation c. session d. transmision e. network f. data link g. physical

37. 2 characteristics of clients in data networks
It has expanded adressing capabilities.
As the commands are entered.
A. they initiate data exchanges b. they may upload data to servers
A. DB 60 b. Winchester 15-pin c. smart serial

38. How does the application layer on a server process multiple client requests for services?
A. HTTP b. HTTPS
It uses support from the lower layers to distinguish between connections to the service.
Flash
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

39. What are the advantages of using a client-server model?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
It uses lasers as the light source.
A. it has centralized administration b. security is easier to enforce

40. An admin needs to keep contents private - which access method should he use?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. minimizing of collisions b. division into broadcast domains
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

41. 3 features of IPv6
Network address
80 (HTTP)
A. larger address space b. data types and classes of service c. authentication and encryption
2046

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.
A. application b. services
Switch
Next-Hop Address

43. What is dinamically selected by the source host when forwarding data?
A. addressing b. error detection c. frame delimiting
Source Port
A. hot keys b. context-sensitive c. command syntax check
Binary ANDing

44. At which layers of the OSI model does ethernet operate?
FTP
A. physical layer b. DLL layer
DNS
A. next-hop b. metric/interface c. destination network address

45. During a TCP session - if packets arrive out of order - what will happen?
IP Protocol
Transport
The packets will be delivered and reassembled at destination.
The physical address is added.

46. Statements that describe LAN
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Host A
Minimal delays in data delivery.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

47. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
Time-to-live (TTL)
UTP
IP is not properly installed
It uses lasers as the light source.

48. What layer encapsulates segments into packets?
Router(config)# hostname Costas
Hosts return to listen-before-transmit mode.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Network Layer

49. 3 terms that define the forms of help available within the Cisco IOS
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
Source and Destination IP address
A. hot keys b. context-sensitive c. command syntax check
As the commands are entered.

50. Network Protocols
A. addressing b. error detection c. frame delimiting
Show Interfaces
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations