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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 are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
Network Layer Packet
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. router b. firewall
A. Physical b. Data Link

2. Which layer supplies services and allows user interface?
Hosts return to listen-before-transmit mode.
Application Layer
The destination host address.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

3. 3 measures of data transfer
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
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
172.16.192.160
A. goodput b. throughput c. bandwidth

4. When do changes take effect in a Cisco router?
As the commands are entered.
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
A. purpose b. geographic location c. ownership
Resolve IPv4 addresses to MAC addresses.

5. 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?
They must wait until the first hosts finish transfering the media.
Is a layer of specific encapsulation.
Host A
A. decentralized resources b. resource sharing w/o a dedicated server

6. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Source Port
A. low overhead b. connectionless
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
Router(config)# interface FastEthernet 0/1

7. What is an effect of improperly applying a network cable connector?
172.16.192.160
A. they initiate data exchanges b. they may upload data to servers
A. minimizing of collisions b. division into broadcast domains
Signal loss can be experienced.

8. When a network service fails - which port is most often used to access a router for management purposes?
Destination Network Address
Console
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

9. What are 3 pieces of info about a route contained in a routing table?
8
Router
A. next-hop b. metric/interface c. destination network address
Binary ANDing

10. What info is found in the TCP and UDP header info?
FTP
Source and Destination Ports
A. minimizing of collisions b. division into broadcast domains
It reduces unnecessary broadcasts.

11. Intermediary devices used to implement security between networks
A. they initiate data exchanges b. they may upload data to servers
Window Size
A. router b. firewall
Host A

12. 2 characteristics of clients in data networks
Network portion
A. they initiate data exchanges b. they may upload data to servers
A. Physical b. Data Link
A. DB 60 b. Winchester 15-pin c. smart serial

13. Where is the IOS file stored at?
Fiber
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Flash
IP is not properly installed

14. What is PDU?
Binary ANDing
TCP initializes the sequence numbers for the sessions.
A. application b. services
Is a layer of specific encapsulation.

15. What does the IEEE 802.2 standard represent in Ethernet technologies?
Logical Link Control sublayer
UTP
OTDR
Network Layer

16. What command can be used to determine if the router has experienced any input or output errors?
Network Layer Packet
As the commands are entered.
No collisions will occur on this link.
Show Interfaces

17. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
IP is not properly installed
0 to 1023
Ctrl + Shift + 6
FTP

18. 3 common problems w/ a large network
A. performance degradation b. security issues c. host identification
Network Media Control
It does not support encryption.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

19. 3 functions of the upper data link sublayer in the OSI model
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
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Host mobility

20. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
80 (HTTP)
A random delay helps prevent the stations from experiencing another collision during transmission.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
It provides for the exchange of data over a common local media.

21. In business LANs - which connector is used w/ twisted-pair networking cable?
RJ-45
To prevent the receiver from being overwhelmed by incoming data.
Network Access
Is used by the server to resolve names.

22. How does the application layer on a server process multiple client requests for services?
It uses support from the lower layers to distinguish between connections to the service.
UTP
A. perform degradation b. security issues c. host identification
IP Protocol

23. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
A. minimizing of collisions b. division into broadcast domains
255.255.255.224
0 to 1023
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

24. What is a protocol that provides connectionless network layer services?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Source and Destination Ports
IP Protocol
A. performance degradation b. security issues c. host identification

25. What can you identify when you examine the Network Layer header?
It reduces unnecessary broadcasts.
Window Size
UTP
The destination host address.

26. 3 factors that should be considered when implementing Layer 2 protocols
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. flow control b. session establishment c. numbering and sequencing

27. What do the intermediary devices in the network do?
Network portion
IP is not properly installed
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
255.255.255.0

28. What layer encapsulates segments into packets?
A. Physical b. Data Link
It has expanded adressing capabilities.
Network Layer
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

29. During a TCP session - if packets arrive out of order - what will happen?
The packets will be delivered and reassembled at destination.
Binary ANDing
Signal loss can be experienced.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

30. At which layers of the OSI model does ethernet operate?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. physical layer b. DLL layer
Network portion
A. servers b. routers c. network printers

31. What are 2 email components used to forward mail between servers?
DNS
A. copper UTP b. optical fiber
A. MTA b. SMTP
A. goodput b. throughput c. bandwidth

32. What is a disadvantage of Telnet?
A. application b. services
It does not support encryption.
A. purpose b. geographic location c. ownership
Hosts return to listen-before-transmit mode.

33. 3 terms that define the forms of help available within the Cisco IOS
A. hot keys b. context-sensitive c. command syntax check
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

34. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
MAC
A. perform degradation b. security issues c. host identification
A. physical layer b. DLL layer
Console

35. During encapsulation - what happens in the Data Link Layer?
The physical address is added.
A. DNS b. SMTP c. POP
A. goodput b. throughput c. bandwidth
Any device whose backoff timer expires first.

36. What is the primary purpose of Layer 4?
255.255.255.224
Identify processes or services that are communicating with end devices.
0 to 1023
A physical topology.

37. 2 most commonly used media types in ethernet networks
A. copper UTP b. optical fiber
A. media sharing b. logical topology
Is used by the server to resolve names.
IP Protocol

38. Which portion of the network layer address does a router use to forward packets?
172.16.192.160
A. perform degradation b. security issues c. host identification
UDP
Network portion

39. What are 2 forms of application layer software?
Network portion
Minimal delays in data delivery.
The MAC protocol can be very simple.
A. application b. services

40. What is a characteristic of a logical point-to-point topology?
RJ-45
The MAC protocol can be very simple.
Resolve IPv4 addresses to MAC addresses.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

41. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Switch
A. they initiate data exchanges b. they may upload data to servers
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Destination Network Address

42. Group of hosts that have identical bit patterns in the high order bits of their addresses
A. addressing b. error detection c. frame delimiting
It has expanded adressing capabilities.
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
Network

43. What are 3 common problems w/ large 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
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. perform degradation b. security issues c. host identification
Identify the device that allows local network computers to communicate w/ devices in other networks.

44. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Binary ANDing
Console
A. servers b. routers c. network printers
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

45. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Network Layer Packet
No collisions will occur on this link.
Binary ANDing
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

46. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
A. purpose b. geographic location c. ownership
It provides interface between applications on either end of the network.
A. MTA b. SMTP
Hub

47. Network Protocols
Physical
Signal loss can be experienced.
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
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

48. What are 2 commands used to view a host routing table?
Router(config)# hostname Costas
A. netstat -r b. route PRINT
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Window Size

49. What causes crosstalk within cable pairs when using UTP?
DNS
The magnetic field around the adjacent pairs of wire.
Transport
A. physical layer b. DLL layer

50. 3 primary functions of the data link layer encapsulation
A. addressing b. error detection c. frame delimiting
A. hot keys b. context-sensitive c. command syntax check
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. purpose b. geographic location c. ownership