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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 3 properties of contention-based media access for a shared media?
A. non-deterministic b. less overhead c. collisions exist
A. low overhead b. connectionless
A. minimizing of collisions b. division into broadcast domains
Ctrl + Shift + 6

2. 3 properties of peer-2-peer applications
Binary ANDing
A. HTTP b. HTTPS
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
Supports error detection.

3. What command is used to change the default name to 'Costas'?
Show Interfaces
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Identify the device that allows local network computers to communicate w/ devices in other networks.
Router(config)# hostname Costas

4. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
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
To enable a receiving host to forward the data to the appropriate application.
A. enable mode b. priviledge executive mode
The destination host address.

5. What command can be used to determine if the router has experienced any input or output errors?
Switch
Show Interfaces
0 to 1023
Identify the device that allows local network computers to communicate w/ devices in other networks.

6. Which device is used to create or divide broadcast domains?
172.16.192.160
Router
A. DNS b. SMTP c. POP
Is a layer of specific encapsulation.

7. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
0 to 1023
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
TCP initializes the sequence numbers for the sessions.
A. HTTP b. HTTPS

8. What characteristic of an UTP helps reduce interference?
To facilitate the entry and exit of data on media.
Twisting of the cables
The address of the router that the host will use to 'get to the other side'.
It does not support encryption.

9. When is a straight-through cable used in a network?
They must wait until the first hosts finish transfering the media.
Source Port
When connecting a host to a switch.
Time-to-live (TTL)

10. 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.
SMB
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

11. What networking devices are recommended to be assigned static IP addresses?
Window Size
Supports error detection.
A. servers b. routers c. network printers
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

12. When a network service fails - which port is most often used to access a router for management purposes?
A. non-deterministic b. less overhead c. collisions exist
Network Layer
Console
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

13. After a routers ends its boot sequence - the admin wants to check the routers config. From the EXEC mode - which commands can the admin use?
Any device whose backoff timer expires first.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. show startup-config b. show running-config
Window Size

14. Network Protocols
A. hot keys b. context-sensitive c. command syntax check
Rollover cable
To prevent the receiver from being overwhelmed by incoming data.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

15. What do end devices do?
A. hot keys b. context-sensitive c. command syntax check
A. identifies the communicating applications b. identifies multiple conversations between the hosts
255.255.255.0
Originate data flow.

16. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
No collisions will occur on this link.
Destination Network Address
Ctrl + Shift + 6
It does not support encryption.

17. At which layer of the TCP/IP model does ethernet operate?
Network Access
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
255.255.255.0
DNS

18. 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. the router will discard the packet b. the router will send a time exceeded message to the source host
A. perform degradation b. security issues c. host identification
2046
Router

19. What is the role of MTA in handling email?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
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
Source Port

20. What event occurs during the 3-way handshake?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
TCP initializes the sequence numbers for the sessions.
Physical
A. purpose b. geographic location c. ownership

21. Group of hosts that have identical bit patterns in the high order bits of their addresses
Static
Network
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

22. During a TCP session - if packets arrive out of order - what will happen?
No collisions will occur on this link.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
The packets will be delivered and reassembled at destination.

23. What is a component of a routing table entry?
Wireless
8
Next-Hop Address
To facilitate the entry and exit of data on media.

24. statements of IP adressing
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
Binary ANDing
Network Layer Packet
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

25. 3 common problems w/ a large network
2046
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. performance degradation b. security issues c. host identification
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

26. What is the purpose of the preamble in an ethernet frame?
A. DB 60 b. Winchester 15-pin c. smart serial
A backbone cable.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. it has centralized administration b. security is easier to enforce

27. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
SMB
A. performance degradation b. security issues c. host identification
A. enable mode b. priviledge executive mode
OTDR

28. During encapsulation - what happens in the Data Link Layer?
It does not support encryption.
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. larger address space b. data types and classes of service c. authentication and encryption
The physical address is added.

29. How many bits make up an IPv4 address?
As the commands are entered.
A. MTA b. SMTP
0 to 1023
32 bits

30. What makes fiber preferable to copper for interconnecting buildings?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A backbone cable.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. it has centralized administration b. security is easier to enforce

31. What layer encapsulates segments into packets?
A. they initiate data exchanges b. they may upload data to servers
Network Layer
Network portion
When connecting a host to a switch.

32. What is the primary reason for developing IPv6?
It has expanded adressing capabilities.
A. MTA b. SMTP
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. the router will discard the packet b. the router will send a time exceeded message to the source host

33. What are 2 email components used to forward mail between servers?
It uses support from the lower layers to distinguish between connections to the service.
To facilitate the entry and exit of data on media.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. MTA b. SMTP

34. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
It has expanded adressing capabilities.
Identify the device that allows local network computers to communicate w/ devices in other networks.
UTP
Resolve IPv4 addresses to MAC addresses.

35. Default Gateway is incorrect on the host - What is the impact on the communications?
Twisting of the cables
8
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

36. What do the intermediary devices in the network do?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. enable mode b. priviledge executive mode
Resolve IPv4 addresses to MAC addresses.
Binary ANDing

37. Where is the IOS file stored at?
Source and Destination IP address
A. media sharing b. logical topology
A. next-hop b. metric/interface c. destination network address
Flash

38. If there is a graphic representation of a company network wiring and equipment - What is this called?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. HTTP b. HTTPS
A physical topology.
Rollover cable

39. What is the proper order of the OSI Layers?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
No collisions will occur on this link.
Network Layer
A. identifies the communicating applications b. identifies multiple conversations between the hosts

40. 3 features of IPv6
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. larger address space b. data types and classes of service c. authentication and encryption
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
8

41. What are key considering factors when grouping hosts into common networks?
A. purpose b. geographic location c. ownership
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. Cat5 UTP b. Cat6 UTP
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

42. What is a characteristic of a logical point-to-point topology?
A. non-deterministic b. less overhead c. collisions exist
SMB
Show Interfaces
The MAC protocol can be very simple.

43. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
To enable a receiving host to forward the data to the appropriate application.
Binary ANDing
255.255.255.224
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

44. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
Physical
32 bits
A. purpose b. geographic location c. ownership
Network

45. 2 characteristics of clients in data networks
The address of the router that the host will use to 'get to the other side'.
The MAC protocol can be very simple.
A. they initiate data exchanges b. they may upload data to servers
As the commands are entered.

46. 3 terms that define the forms of help available within the Cisco IOS
A. hot keys b. context-sensitive c. command syntax check
They must wait until the first hosts finish transfering the media.
It reduces unnecessary broadcasts.
Wireless

47. A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
Host A
A. Cat5 UTP b. Cat6 UTP
172.16.192.160
A. copper UTP b. optical fiber

48. In business LANs - which connector is used w/ twisted-pair networking cable?
A. low overhead b. connectionless
RJ-45
Resolve IPv4 addresses to MAC addresses.
A. the router will discard the packet b. the router will send a time exceeded message to the source host

49. What is dinamically selected by the source host when forwarding data?
As the commands are entered.
Minimal delays in data delivery.
Source Port
Router

50. Which IP packet field will prevent endless loops?
Collisions can decrease network performance.
A. enable mode b. priviledge executive mode
Time-to-live (TTL)
The magnetic field around the adjacent pairs of wire.