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. How does the application layer on a server process multiple client requests for services?
It provides interface between applications on either end of the network.
It uses support from the lower layers to distinguish between connections to the service.
Switch
A default gateway (router).

2. What is the primary rope of the physical layer in transmitting data?
Create signals that represent the bits in each frame for the media.
A. application b. services
Router(config)# interface FastEthernet 0/1
Flash

3. What statements describe the logical token-passing topology?
2046
A. low overhead b. connectionless
Source and Destination Ports
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

4. When do changes take effect in a Cisco router?
A default gateway (router).
255.255.255.224
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
As the commands are entered.

5. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
No collisions will occur on this link.
A. HTTP b. HTTPS
MAC
It provides interface between applications on either end of the network.

6. What can you identify when you examine the Network Layer header?
A random delay helps prevent the stations from experiencing another collision during transmission.
A. larger address space b. data types and classes of service c. authentication and encryption
The destination host address.
A. copper UTP b. optical fiber

7. Default Gateway is incorrect on the host - What is the impact on the communications?
UDP
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Time-to-live (TTL)
Is a layer of specific encapsulation.

8. What are the advantages of using a client-server model?
A. replace a switch w/ a router b. subnet the new networks
A. router b. firewall
A. it has centralized administration b. security is easier to enforce
A backbone cable.

9. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
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
Hosts return to listen-before-transmit mode.
Identify processes or services that are communicating with end devices.
Fiber

10. What is a drawback of the CSMA/CD access method?
A. replace a switch w/ a router b. subnet the new networks
0 to 1023
Collisions can decrease network performance.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

11. What is a component of a routing table entry?
The destination host address.
8
SSH
Next-Hop Address

12. 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?
Host A
A. Cat5 UTP b. Cat6 UTP
A. non-deterministic b. less overhead c. collisions exist
It reduces unnecessary broadcasts.

13. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. larger address space b. data types and classes of service c. authentication and encryption
Source Port
80 (HTTP)

14. 3 terms that define the forms of help available within the Cisco IOS
80 (HTTP)
255.255.255.224
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. hot keys b. context-sensitive c. command syntax check

15. 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
Source and Destination IP address
UTP
SMB

16. Where is the IOS file stored at?
Flash
A physical topology.
DNS
Minimal delays in data delivery.

17. What correctly describes a MAC address?
Host mobility
It has expanded adressing capabilities.
No collisions will occur on this link.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

18. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. show startup-config b. show running-config
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Network Media Control
Rollover cable

19. 3 statements of media acess control
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
Twisting of the cables
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Console interface

20. At which layer of the TCP/IP model does ethernet operate?
Destination Network Address
A. netstat -r b. route PRINT
Network Access
Minimal delays in data delivery.

21. If you have a full-duplex operational network - what can happen?
No collisions will occur on this link.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
TCP initializes the sequence numbers for the sessions.
It provides for the exchange of data over a common local media.

22. Network Protocols
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
Wireless
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

23. What is the purpose of the TCP/IP Network Application Layer?
It uses lasers as the light source.
Network address
Network Media Control
It provides for the exchange of data over a common local media.

24. What causes crosstalk within cable pairs when using UTP?
The magnetic field around the adjacent pairs of wire.
172.16.192.160
A. copper UTP b. optical fiber
Supports error detection.

25. 2 functions of encapsulation
A. copper UTP b. optical fiber
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
255.255.255.0
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

26. What info is found in the TCP and UDP header info?
It does not support encryption.
Ctrl + Shift + 6
Source and Destination Ports
UTP

27. What application layer protocol is used to support file transfers between client and server?
FTP
Physical
The physical address is added.
Identify processes or services that are communicating with end devices.

28. How many bits make up an IPv4 address?
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
Any device whose backoff timer expires first.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
32 bits

29. What is the purpose of resource records in DNS?
Source and Destination IP address
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Rollover cable
Is used by the server to resolve names.

30. What command can be used to determine if the router has experienced any input or output errors?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
IP is not properly installed
Show Interfaces
Create signals that represent the bits in each frame for the media.

31. What are 3 properties of contention-based media access for a shared media?
A. non-deterministic b. less overhead c. collisions exist
A. addressing b. error detection c. frame delimiting
Router
It provides interface between applications on either end of the network.

32. 3 statements about routes and their use
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. 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. netstat -r b. route PRINT
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

33. 3 protocols that operate in the application layer
A. HTTP b. HTTPS
A. DB 60 b. Winchester 15-pin c. smart serial
A. DNS b. SMTP c. POP
The physical address is added.

34. What connectors are commonly associated w/ Cisco's V.35 serial cables?
Hub
A. DB 60 b. Winchester 15-pin c. smart serial
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
The address of the router that the host will use to 'get to the other side'.

35. What type of routing uses information that is manually entered into the routing table?
Static
Logical Link Control sublayer
DNS
8

36. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
A. router b. firewall
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. MTA b. SMTP
UTP

37. What is the role of the OSI Application Layer?
Network Media Control
It provides interface between applications on either end of the network.
0 to 1023
Next-Hop Address

38. What characteristic of an UTP helps reduce interference?
Twisting of the cables
Source Port
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

39. 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 random delay helps prevent the stations from experiencing another collision during transmission.
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. addressing b. error detection c. frame delimiting
They must wait until the first hosts finish transfering the media.

40. 3 statements about the role of routers in the network
Router
It provides for the exchange of data over a common local media.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
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

41. What is a protocol that provides connectionless network layer services?
IP Protocol
As the commands are entered.
A. it has centralized administration b. security is easier to enforce
Source Port

42. What do end devices do?
Signal loss can be experienced.
It provides for the exchange of data over a common local media.
Originate data flow.
A. router b. firewall

43. At which layers of the OSI model does ethernet operate?
Transport
A. physical layer b. DLL layer
80 (HTTP)
It has expanded adressing capabilities.

44. What are 2 commands used to view a host routing table?
The packets will be delivered and reassembled at destination.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
It uses lasers as the light source.
A. netstat -r b. route PRINT

45. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
DNS
A. servers b. routers c. network printers
A. minimizing of collisions b. division into broadcast domains
0 to 1023

46. When a device is moved from one network to the other...?
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
TCP initializes the sequence numbers for the sessions.
No collisions will occur on this link.
Rollover cable

47. Statements that describe LAN
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
It provides interface between applications on either end of the network.
A. larger address space b. data types and classes of service c. authentication and encryption
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

48. What do you need to use for an initial configuration on a Cisco router?
Network portion
A. identifies the communicating applications b. identifies multiple conversations between the hosts
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
Console interface

49. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
Network Media Control
A. HTTP b. HTTPS
255.255.255.0
A. purpose b. geographic location c. ownership

50. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Application Layer
A. decentralized resources b. resource sharing w/o a dedicated server
Network Layer Packet
UTP