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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 causes crosstalk within cable pairs when using UTP?
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. servers b. routers c. network printers
The magnetic field around the adjacent pairs of wire.
They must wait until the first hosts finish transfering the media.

2. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
SMB
Binary ANDing
Rollover cable

3. Important characteristic of UDP
Minimal delays in data delivery.
Console
A. minimizing of collisions b. division into broadcast domains
A default gateway (router).

4. What can be a problem that is reduced by adding end-to-end addressing?
Source Port
It reduces unnecessary broadcasts.
A random delay helps prevent the stations from experiencing another collision during transmission.
A. low overhead b. connectionless

5. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Logical Link Control sublayer
Transport
A. it has centralized administration b. security is easier to enforce

6. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
RJ-45
Fiber
OTDR
Destination Network Address

7. What kind of problems are caused by excessive broadcast traffic on network segments?
A random delay helps prevent the stations from experiencing another collision during transmission.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
When connecting a host to a switch.
Flash

8. What are 2 email components used to forward mail between servers?
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. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. MTA b. SMTP
A. physical layer b. DLL layer

9. Network Protocols
Flash
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
MAC
A. DB 60 b. Winchester 15-pin c. smart serial

10. What is the purpose of resource records in DNS?
Is used by the server to resolve names.
Network Layer Packet
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
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

11. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
Resolve IPv4 addresses to MAC addresses.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. enable mode b. priviledge executive mode
Collisions can decrease network performance.

12. What makes fiber preferable to copper for interconnecting buildings?
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. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Identify processes or services that are communicating with end devices.
Originate data flow.

13. Where is the IOS file stored at?
Minimal delays in data delivery.
A. it has centralized administration b. security is easier to enforce
A. copper UTP b. optical fiber
Flash

14. 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. purpose b. geographic location c. ownership
A. application b. services
A. addressing b. error detection c. frame delimiting

15. 3 statements of media acess control
Router
0 to 1023
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. 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

16. 3 statements about routes and their use
SSH
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
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
Originate data flow.

17. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
172.16.192.160
MAC
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

18. What is the role of MTA in handling email?
Router(config)# interface FastEthernet 0/1
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Static
A. media sharing b. logical topology

19. To make a console connection from a comp to a Cisco router - what cable should be used?
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
Rollover cable
Console
Transport

20. What are 2 features of User Diagram Protocol (UDP)?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Ctrl + Shift + 6
Binary ANDing
A. low overhead b. connectionless

21. In business LANs - which connector is used w/ twisted-pair networking cable?
When connecting a host to a switch.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
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
RJ-45

22. If you have a full-duplex operational network - what can happen?
UDP
No collisions will occur on this link.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

23. What do the intermediary devices in the network do?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
255.255.255.224
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

24. What is an automated service that matches resource names w/ required IP addresses?
A. Cat5 UTP b. Cat6 UTP
DNS
UDP
It has expanded adressing capabilities.

25. 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. copper UTP b. optical fiber
Any device whose backoff timer expires first.
2046
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

26. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
0 to 1023
A. larger address space b. data types and classes of service c. authentication and encryption
A. media sharing b. logical topology
A. next-hop b. metric/interface c. destination network address

27. What is the primary rope of the physical layer in transmitting data?
Create signals that represent the bits in each frame for the media.
Router(config)# interface FastEthernet 0/1
Resolve IPv4 addresses to MAC addresses.
Source and Destination Ports

28. What are 2 forms of application layer software?
It reduces unnecessary broadcasts.
The packets will be delivered and reassembled at destination.
A. application b. services
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

29. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
255.255.255.224
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. Cat5 UTP b. Cat6 UTP
It uses support from the lower layers to distinguish between connections to the service.

30. 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. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
The physical address is added.
A. netstat -r b. route PRINT
80 (HTTP)

31. What is a characteristic of a logical point-to-point topology?
Is a layer of specific encapsulation.
The MAC protocol can be very simple.
Next-Hop Address
To enable a receiving host to forward the data to the appropriate application.

32. What info is found in the TCP and UDP header info?
No collisions will occur on this link.
Source and Destination Ports
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. perform degradation b. security issues c. host identification

33. What is the purpose of the TCP/IP Network Application Layer?
Router(config)# hostname Costas
A. minimizing of collisions b. division into broadcast domains
Network Media Control
A. it has centralized administration b. security is easier to enforce

34. Which characteristics describe fiber optic cable?
To enable a receiving host to forward the data to the appropriate application.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
OTDR
A. not affected by EMI of RFI b. most expensive type of LAN cabling

35. 2 most commonly used media types in ethernet networks
A. next-hop b. metric/interface c. destination network address
It has expanded adressing capabilities.
A. larger address space b. data types and classes of service c. authentication and encryption
A. copper UTP b. optical fiber

36. 3 factors that should be considered when implementing Layer 2 protocols
Minimal delays in data delivery.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. goodput b. throughput c. bandwidth
As the commands are entered.

37. What is a default gateway address?

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38. 3 functions of the upper data link sublayer in the OSI model
Time-to-live (TTL)
Application Layer
A. DB 60 b. Winchester 15-pin c. smart serial
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

39. What do end devices do?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Network address
DNS
Originate data flow.

40. If you have a small network w/ 3 computers...
A. enable mode b. priviledge executive mode
Identify processes or services that are communicating with end devices.
It reduces unnecessary broadcasts.
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 determines the method of media access control?
2046
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. media sharing b. logical topology
Network Access

42. Which layer supplies services and allows user interface?
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. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Binary ANDing
Application Layer

43. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
Any device whose backoff timer expires first.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Network Media Control
Show Interfaces

44. 3 characteristics of valid Ethernet Layer 2 addresses
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
8
A default gateway (router).
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

45. Which combination of keys can be used to interrupt a ping or traceroute process?
Ctrl + Shift + 6
A. hot keys b. context-sensitive c. command syntax check
Collisions can decrease network performance.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

46. What describes the purpose of default route?
Twisting of the cables
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
The address of the router that the host will use to 'get to the other side'.
A. non-deterministic b. less overhead c. collisions exist

47. What networking devices are recommended to be assigned static IP addresses?
A. servers b. routers c. network printers
A. show startup-config b. show running-config
A. it has centralized administration b. security is easier to enforce
A. replace a switch w/ a router b. subnet the new networks

48. What are 3 pieces of info about a route contained in a routing table?
A. next-hop b. metric/interface c. destination network address
Router
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

49. What can you identify when you examine the Network Layer header?
A. Physical b. Data Link
TCP initializes the sequence numbers for the sessions.
The destination host address.
A. servers b. routers c. network printers

50. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Binary ANDing
Time-to-live (TTL)
No collisions will occur on this link.
A. next-hop b. metric/interface c. destination network address