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. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
Console
UTP
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Physical

2. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
Source and Destination IP address
It provides for the exchange of data over a common local media.
A random delay helps prevent the stations from experiencing another collision during transmission.
A. HTTP b. HTTPS

3. What is a characteristic of a logical point-to-point topology?
A. copper UTP b. optical fiber
The MAC protocol can be very simple.
A. application b. services
A. DNS b. SMTP c. POP

4. What is the primary function of encapsulating packets into frames?
255.255.255.0
A. copper UTP b. optical fiber
Network Media Control
To facilitate the entry and exit of data on media.

5. Network Protocols
A. DB 60 b. Winchester 15-pin c. smart serial
Source and Destination IP address
32 bits
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

6. What method of signal transmission uses radio waves to carry signals?
Wireless
Console
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. enable mode b. priviledge executive mode

7. Which combination of keys can be used to interrupt a ping or traceroute process?
Identify processes or services that are communicating with end devices.
Router(config)# interface FastEthernet 0/1
Ctrl + Shift + 6
No collisions will occur on this link.

8. What is the purpose of a default gateway?
Window Size
Identify the device that allows local network computers to communicate w/ devices in other networks.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Show Interfaces

9. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
0 to 1023
The magnetic field around the adjacent pairs of wire.
TCP initializes the sequence numbers for the sessions.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

10. Group of hosts that have identical bit patterns in the high order bits of their addresses
A. show startup-config b. show running-config
Collisions can decrease network performance.
A. addressing b. error detection c. frame delimiting
Network

11. What is the purpose of resource records in DNS?
A. hot keys b. context-sensitive c. command syntax check
Hub
Is used by the server to resolve names.
Resolve IPv4 addresses to MAC addresses.

12. How many bits make up an IPv4 address?
OTDR
32 bits
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
Network portion

13. In business LANs - which connector is used w/ twisted-pair networking cable?
RJ-45
Network address
A. router b. firewall
The MAC protocol can be very simple.

14. 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
IP Protocol
A. copper UTP b. optical fiber
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

15. There are too many broadcasts on switches - what can be done?
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 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. replace a switch w/ a router b. subnet the new networks
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

16. What networking devices are recommended to be assigned static IP addresses?
Network Layer
Twisting of the cables
Logical Link Control sublayer
A. servers b. routers c. network printers

17. During a TCP session - if packets arrive out of order - what will happen?
The packets will be delivered and reassembled at destination.
8
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Router(config)# interface FastEthernet 0/1

18. Intermediary devices used to implement security between networks
The address of the router that the host will use to 'get to the other side'.
0 to 1023
A. router b. firewall
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

19. How does the application layer on a server process multiple client requests for services?
A. low overhead b. connectionless
It uses support from the lower layers to distinguish between connections to the service.
Window Size
Any device whose backoff timer expires first.

20. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
It provides interface between applications on either end of the network.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Source and Destination IP address

21. statements of IP adressing
Ctrl + Shift + 6
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
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
MAC

22. 3 measures of data transfer
Application Layer
A. next-hop b. metric/interface c. destination network address
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. goodput b. throughput c. bandwidth

23. Default Gateway is incorrect on the host - What is the impact on the communications?
Ctrl + Shift + 6
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Physical
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

24. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
RJ-45
Destination Network Address
A. replace a switch w/ a router b. subnet the new networks
Static

25. What do end devices do?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A physical topology.
Originate data flow.
SMB

26. After an ethernet collision - which device has priority to transmit data?
Any device whose backoff timer expires first.
Fiber
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

27. What info is found in the TCP and UDP header info?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Source and Destination Ports
A. performance degradation b. security issues c. host identification
Console interface

28. 2 characteristics of clients in data networks
Network
Console interface
Is used by the server to resolve names.
A. they initiate data exchanges b. they may upload data to servers

29. What do the intermediary devices in the network do?
The physical address is added.
A. physical layer b. DLL layer
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
2046

30. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Switch
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
Network Layer Packet
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

31. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
A. decentralized resources b. resource sharing w/o a dedicated server
Network Layer Packet
A. low overhead b. connectionless
A. HTTP b. HTTPS

32. What determines the method of media access control?
A. media sharing b. logical topology
Destination Network Address
172.16.192.160
A backbone cable.

33. Which layer supplies services and allows user interface?
A. netstat -r b. route PRINT
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
Application Layer

34. 3 terms that define the forms of help available within the Cisco IOS
A. low overhead b. connectionless
A. perform degradation b. security issues c. host identification
A. hot keys b. context-sensitive c. command syntax check
A. Physical b. Data Link

35. What device can check for faults - integrity and performance of media?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
OTDR
Create signals that represent the bits in each frame for the media.
It uses lasers as the light source.

36. What is an effect of improperly applying a network cable connector?
A default gateway (router).
Signal loss can be experienced.
A. flow control b. session establishment c. numbering and sequencing
A. HTTP b. HTTPS

37. What application layer protocol is used to support file transfers between client and server?
Time-to-live (TTL)
A. physical layer b. DLL layer
FTP
As the commands are entered.

38. What can you identify when you examine the Network Layer header?
MAC
Host mobility
Switch
The destination host address.

39. When a network service fails - which port is most often used to access a router for management purposes?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Router
It uses support from the lower layers to distinguish between connections to the service.
Console

40. What command is used to change the default name to 'Costas'?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Network Media Control
Router(config)# hostname Costas
The address of the router that the host will use to 'get to the other side'.

41. What type of network cable is used between a terminal and a console port?
A. larger address space b. data types and classes of service c. authentication and encryption
Rollover cable
Hosts return to listen-before-transmit mode.
Network Layer

42. What layer encapsulates segments into packets?
A. physical layer b. DLL layer
Network Layer
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 the device that allows local network computers to communicate w/ devices in other networks.

43. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
Host A
Ctrl + Shift + 6
Switch
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

44. What is a benefit of a WAN?
A. physical layer b. DLL layer
Identify processes or services that are communicating with end devices.
Network Access
Host mobility

45. When is a straight-through cable used in a network?
Physical
Signal loss can be experienced.
When connecting a host to a switch.
A. minimizing of collisions b. division into broadcast domains

46. What causes crosstalk within cable pairs when using UTP?
The magnetic field around the adjacent pairs of wire.
They must wait until the first hosts finish transfering the media.
A. perform degradation b. security issues c. host identification
80 (HTTP)

47. 2 characteristics of peer-2-peer
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
255.255.255.224
A. decentralized resources b. resource sharing w/o a dedicated server
Host A

48. Which 2 options represent Layer 4 addressing?
They must wait until the first hosts finish transfering the media.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Originate data flow.
Router

49. If you have a small network w/ 3 computers...
A. the router will discard the packet b. the router will send a time exceeded message to the source host
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
2046

50. What are 2 features of User Diagram Protocol (UDP)?
A. low overhead b. connectionless
IP Protocol
A. DNS b. SMTP c. POP
A. replace a switch w/ a router b. subnet the new networks