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. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
IP is not properly installed
Network Media Control
Collisions can decrease network performance.
A. Physical b. Data Link

2. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
0 to 1023
Rollover cable
A. Physical b. Data Link
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

3. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
A. low overhead b. connectionless
A. Cat5 UTP b. Cat6 UTP
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Router(config)# interface FastEthernet 0/1

4. What are 3 common problems w/ large networks?
Destination is not contacted before a packet is sent.
Binary ANDing
A. perform degradation b. security issues c. host identification
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

5. When a network service fails - which port is most often used to access a router for management purposes?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
The packets will be delivered and reassembled at destination.
Console
Collisions can decrease network performance.

6. 2 characteristics of clients in data networks
2046
Show Interfaces
OTDR
A. they initiate data exchanges b. they may upload data to servers

7. During a TCP session - if packets arrive out of order - what will happen?
The packets will be delivered and reassembled at destination.
Next-Hop Address
IP is not properly installed
Flash

8. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Next-Hop Address
The MAC protocol can be very simple.
Console interface

9. At which layers of the OSI model does ethernet operate?
Destination is not contacted before a packet is sent.
A. physical layer b. DLL layer
Application Layer
Transport

10. 3 common problems w/ a large network
A. performance degradation b. security issues c. host identification
It provides interface between applications on either end of the network.
Hosts return to listen-before-transmit mode.
UDP

11. What do you need to use for an initial configuration on a Cisco router?
Switch
Console interface
Twisting of the cables
A. low overhead b. connectionless

12. What are 2 features of User Diagram Protocol (UDP)?
A physical topology.
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. low overhead b. connectionless
Any device whose backoff timer expires first.

13. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
Identify the device that allows local network computers to communicate w/ devices in other networks.
255.255.255.0
UDP
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

14. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
Physical
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

15. If there is a graphic representation of a company network wiring and equipment - What is this called?
A physical topology.
IP is not properly installed
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Create signals that represent the bits in each frame for the media.

16. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Network Layer Packet
Twisting of the cables
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
It does not support encryption.

17. 2 characteristics of peer-2-peer
It provides interface between applications on either end of the network.
A. decentralized resources b. resource sharing w/o a dedicated server
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Flash

18. What can be a problem that is reduced by adding end-to-end addressing?
Rollover cable
It reduces unnecessary broadcasts.
A. physical layer b. DLL layer
Collisions can decrease network performance.

19. What is an effect of improperly applying a network cable connector?
Signal loss can be experienced.
Is used by the server to resolve names.
A. MTA b. SMTP
Identify the device that allows local network computers to communicate w/ devices in other networks.

20. Which 2 options represent Layer 4 addressing?
A. show startup-config b. show running-config
As the commands are entered.
Binary ANDing
A. identifies the communicating applications b. identifies multiple conversations between the hosts

21. Which characteristics describe fiber optic cable?
When connecting a host to a switch.
Network Media Control
A. show startup-config b. show running-config
A. not affected by EMI of RFI b. most expensive type of LAN cabling

22. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
A. show startup-config b. show running-config
Physical
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
80 (HTTP)

23. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
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
Supports error detection.
A. netstat -r b. route PRINT

24. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
A. Physical b. Data Link
A. DNS b. SMTP c. POP
Minimal delays in data delivery.
Rollover cable

25. During encapsulation - what happens in the Data Link Layer?
As the commands are entered.
A physical topology.
Network
The physical address is added.

26. What type of routing uses information that is manually entered into the routing table?
Source Port
The address of the router that the host will use to 'get to the other side'.
Switch
Static

27. What kind of problems are caused by excessive broadcast traffic on network segments?
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
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Application Layer
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

28. What application layer protocol is used to support file transfers between client and server?
It does not support encryption.
A. performance degradation b. security issues c. host identification
FTP
Next-Hop Address

29. What layer encapsulates segments into packets?
Network Layer
RJ-45
UDP
It provides for the exchange of data over a common local media.

30. What is a characteristic of a logical point-to-point topology?
A. low overhead b. connectionless
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
255.255.255.224
The MAC protocol can be very simple.

31. What are 2 email components used to forward mail between servers?
Application Layer
A. MTA b. SMTP
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Binary ANDing

32. What can get you to an outside network?
A default gateway (router).
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Minimal delays in data delivery.

33. What are 3 pieces of info about a route contained in a routing table?
A. next-hop b. metric/interface c. destination network address
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
RJ-45
It has expanded adressing capabilities.

34. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
Network Media Control
UDP
Host mobility
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

35. 3 statements about the role of routers in the network
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
0 to 1023
A. physical layer b. DLL layer

36. What is the purpose of a default gateway?
Router
Network Layer Packet
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Identify the device that allows local network computers to communicate w/ devices in other networks.

37. Which layer supplies services and allows user interface?
Application Layer
Console
Source Port
Static

38. Which IP packet field will prevent endless loops?
Time-to-live (TTL)
Rollover cable
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Any device whose backoff timer expires first.

39. What is the primary rope of the physical layer in transmitting data?
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
SSH
A backbone cable.
Create signals that represent the bits in each frame for the media.

40. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
A. goodput b. throughput c. bandwidth
172.16.192.160
MAC
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

41. An admin needs to keep contents private - which access method should he use?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
A. minimizing of collisions b. division into broadcast domains
SSH

42. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
A. DB 60 b. Winchester 15-pin c. smart serial
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Binary ANDing
Destination Network Address

43. Which portion of the network layer address does a router use to forward packets?
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
Network portion
A. goodput b. throughput c. bandwidth
Router(config)# interface FastEthernet 0/1

44. When destination network is not in the routing table - What are 2 actions the router might take?
Collisions can decrease network performance.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Console interface

45. 3 terms that define the forms of help available within the Cisco IOS
A. hot keys b. context-sensitive c. command syntax check
Ctrl + Shift + 6
Time-to-live (TTL)
Source Port

46. What statements describe the logical token-passing topology?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
FTP
A. media sharing b. logical topology

47. What makes fiber preferable to copper for interconnecting buildings?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Twisting of the cables
Network Media Control
It reduces unnecessary broadcasts.

48. To make a console connection from a comp to a Cisco router - what cable should be used?
Rollover cable
SMB
A. hot keys b. context-sensitive c. command syntax check
Console

49. What command can be used to determine if the router has experienced any input or output errors?
Create signals that represent the bits in each frame for the media.
Show Interfaces
0 to 1023
The destination host address.

50. Statements that describe LAN
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Destination Network Address
Source Port
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)