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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. 3 primary functions of the data link layer encapsulation
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
Binary ANDing
A. addressing b. error detection c. frame delimiting
A. servers b. routers c. network printers

2. What is PDU?
Host A
0 to 1023
Is a layer of specific encapsulation.
The magnetic field around the adjacent pairs of wire.

3. Which 2 options represent Layer 4 addressing?
Console interface
A. identifies the communicating applications b. identifies multiple conversations between the hosts
It uses lasers as the light source.
A. larger address space b. data types and classes of service c. authentication and encryption

4. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Network Layer Packet
A. hot keys b. context-sensitive c. command syntax check
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
Hub

5. In business LANs - which connector is used w/ twisted-pair networking cable?
A. netstat -r b. route PRINT
It uses lasers as the light source.
RJ-45
Switch

6. Important characteristic of UDP
Supports error detection.
Minimal delays in data delivery.
Twisting of the cables
A. DNS b. SMTP c. POP

7. 3 facts about the network portion of an IPv4 address
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward 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

8. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
A. purpose b. geographic location c. ownership
It uses support from the lower layers to distinguish between connections to the service.
MAC
Network Layer Packet

9. What event occurs during the 3-way handshake?
Console interface
A. low overhead b. connectionless
A. DB 60 b. Winchester 15-pin c. smart serial
TCP initializes the sequence numbers for the sessions.

10. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Window Size
A. replace a switch w/ a router b. subnet the new networks
Rollover cable
A. hot keys b. context-sensitive c. command syntax check

11. What are 2 commands used to view a host routing table?
A. netstat -r b. route PRINT
A. DB 60 b. Winchester 15-pin c. smart serial
A. copper UTP b. optical fiber
The destination host address.

12. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Identify the device that allows local network computers to communicate w/ devices in other networks.
Show Interfaces
Network Access
Network address

13. 3 characteristics of valid Ethernet Layer 2 addresses
A. router b. firewall
It does not support encryption.
Supports error detection.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

14. What is a benefit of a WAN?
Host mobility
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Supports error detection.
To enable a receiving host to forward the data to the appropriate application.

15. What correctly describes a MAC address?
Transport
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. decentralized resources b. resource sharing w/o a dedicated server

16. What are 2 email components used to forward mail between servers?
A. enable mode b. priviledge executive mode
Wireless
A. MTA b. SMTP
2046

17. What networking devices are recommended to be assigned static IP addresses?
172.16.192.160
A. servers b. routers c. network printers
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Host mobility

18. What can get you to an outside network?
A default gateway (router).
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
Window Size
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

19. What are 2 common characteristics associated w/ dynamic routing protocols?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. larger address space b. data types and classes of service c. authentication and encryption
Source Port

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

21. 3 factors that should be considered when implementing Layer 2 protocols
DNS
The physical address is added.
No collisions will occur on this link.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

22. 2 characteristics of peer-2-peer
Window Size
A. decentralized resources b. resource sharing w/o a dedicated server
A. it has centralized administration b. security is easier to enforce
Source and Destination IP address

23. Which characteristics describe fiber optic cable?
Signal loss can be experienced.
A. MTA b. SMTP
Destination Network Address
A. not affected by EMI of RFI b. most expensive type of LAN cabling

24. If you have a small network w/ 3 computers...
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. decentralized resources b. resource sharing w/o a dedicated server
Static
Router

25. If you have a full-duplex operational network - what can happen?
Host A
No collisions will occur on this link.
A backbone cable.
Resolve IPv4 addresses to MAC addresses.

26. How does the application layer on a server process multiple client requests for services?
A backbone cable.
It uses support from the lower layers to distinguish between connections to the service.
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
Switch

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.
Is a layer of specific encapsulation.
To facilitate the entry and exit of data on media.
Router(config)# interface FastEthernet 0/1

28. 3 common problems w/ a large network
A. performance degradation b. security issues c. host identification
Hub
Console interface
FTP

29. During a TCP session - if packets arrive out of order - what will happen?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Is a layer of specific encapsulation.
The packets will be delivered and reassembled at destination.

30. Default Gateway is incorrect on the host - What is the impact on the communications?
Rollover cable
A. hot keys b. context-sensitive c. command syntax check
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

31. What device can check for faults - integrity and performance of media?
A. media sharing b. logical topology
Host A
Physical
OTDR

32. What causes crosstalk within cable pairs when using UTP?
Supports error detection.
SMB
The magnetic field around the adjacent pairs of wire.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

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. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Logical Link Control sublayer
No collisions will occur on this link.

34. What is a disadvantage of Telnet?
A. servers b. routers c. network printers
It does not support encryption.
A default gateway (router).
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

35. What command is used to change the default name to 'Costas'?
Router(config)# hostname Costas
Flash
Network Media Control
Any device whose backoff timer expires first.

36. 2 most commonly used media types in ethernet networks
A default gateway (router).
A. copper UTP b. optical fiber
TCP initializes the sequence numbers for the sessions.
It does not support encryption.

37. Which combination of keys can be used to interrupt a ping or traceroute process?
Ctrl + Shift + 6
The physical address is added.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. media sharing b. logical topology

38. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
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
The packets will be delivered and reassembled at destination.
TCP initializes the sequence numbers for the sessions.
A. enable mode b. priviledge executive mode

39. Which portion of the network layer address does a router use to forward packets?
A. show startup-config b. show running-config
A. DB 60 b. Winchester 15-pin c. smart serial
A. it has centralized administration b. security is easier to enforce
Network portion

40. What 2 type of cables would most commonly be used for new runs?
A. performance degradation b. security issues c. host identification
Minimal delays in data delivery.
A. media sharing b. logical topology
A. Cat5 UTP b. Cat6 UTP

41. Where is the IOS file stored at?
To prevent the receiver from being overwhelmed by incoming data.
Supports error detection.
Flash
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

42. What do the intermediary devices in the network do?
As the commands are entered.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Switch
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

43. What type of routing uses information that is manually entered into the routing table?
A. they initiate data exchanges b. they may upload data to servers
A. DNS b. SMTP c. POP
Static
They must wait until the first hosts finish transfering the media.

44. What is the primary purpose of Layer 4?
Physical
Show Interfaces
Network Media Control
Identify processes or services that are communicating with end devices.

45. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Originate data flow.
A. hot keys b. context-sensitive c. command syntax check
Binary ANDing
A. HTTP b. HTTPS

46. 2 functions of encapsulation
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 Layer Packet
A. Cat5 UTP b. Cat6 UTP
0 to 1023

47. 3 features that allow TCP to realibly and accurately track the transmission of data
A. flow control b. session establishment c. numbering and sequencing
Any device whose backoff timer expires first.
Transport
Destination Network Address

48. 3 terms that define the forms of help available within the Cisco IOS
Host mobility
IP Protocol
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. hot keys b. context-sensitive c. command syntax check

49. What are 3 common problems w/ large networks?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
8
IP Protocol
A. perform degradation b. security issues c. host identification

50. What characteristic of an UTP helps reduce interference?
A. performance degradation b. security issues c. host identification
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Twisting of the cables
Binary ANDing