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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 terms that define the forms of help available within the Cisco IOS
A. hot keys b. context-sensitive c. command syntax check
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. flow control b. session establishment c. numbering and sequencing
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

2. If there is a graphic representation of a company network wiring and equipment - What is this called?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A physical topology.
A. servers b. routers c. network printers
A. addressing b. error detection c. frame delimiting

3. 3 functions of the upper data link sublayer in the OSI model
A. physical layer b. DLL layer
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
32 bits
A. media sharing b. logical topology

4. What kind of problems are caused by excessive broadcast traffic on network segments?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A backbone cable.
Any device whose backoff timer expires first.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

5. What determines the method of media access control?
A. media sharing b. logical topology
To facilitate the entry and exit of data on media.
Network Access
80 (HTTP)

6. What application layer protocol is used to support file transfers between client and server?
Wireless
Identify the device that allows local network computers to communicate w/ devices in other networks.
Window Size
FTP

7. What type of routing uses information that is manually entered into the routing table?
Wireless
255.255.255.0
Static
FTP

8. 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?
2046
Logical Link Control sublayer
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

9. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. goodput b. throughput c. bandwidth
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. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Binary ANDing

10. What are 3 pieces of info about a route contained in a routing table?
A. next-hop b. metric/interface c. destination network address
Console interface
Network
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

11. 3 factors that should be considered when implementing Layer 2 protocols
8
UTP
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

12. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
UTP
It provides interface between applications on either end of the network.
SMB
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

13. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
SSH
Network Layer Packet
No collisions will occur on this link.
Network address

14. statements of IP adressing
Originate data flow.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
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
SSH

15. What are 2 protocols for transfering web resources?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. HTTP b. HTTPS
It provides interface between applications on either end of the network.
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

16. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Switch
A. Physical b. Data Link
It uses lasers as the light source.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

17. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
Any device whose backoff timer expires first.
Network Access
Physical
MAC

18. What type of network cable is used between a terminal and a console port?
A. replace a switch w/ a router b. subnet the new networks
Router(config)# interface FastEthernet 0/1
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
Rollover cable

19. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Static
A backbone cable.
Hosts return to listen-before-transmit mode.

20. What correctly describes a MAC address?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Console interface
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. replace a switch w/ a router b. subnet the new networks

21. Why is flow control used for TCP data transfer?
A. it has centralized administration b. security is easier to enforce
To prevent the receiver from being overwhelmed by incoming data.
255.255.255.0
Binary ANDing

22. What event occurs during the 3-way handshake?
When connecting a host to a switch.
A. it has centralized administration b. security is easier to enforce
FTP
TCP initializes the sequence numbers for the sessions.

23. What are 2 features of User Diagram Protocol (UDP)?
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
It reduces unnecessary broadcasts.
80 (HTTP)
A. low overhead b. connectionless

24. Which IP packet field will prevent endless loops?
Signal loss can be experienced.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Time-to-live (TTL)

25. What is the role of MTA in handling email?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Rollover cable
Source and Destination Ports

26. 3 common problems w/ a large network
A random delay helps prevent the stations from experiencing another collision during transmission.
To facilitate the entry and exit of data on media.
8
A. performance degradation b. security issues c. host identification

27. What are 2 commands used to view a host routing table?
A. netstat -r b. route PRINT
Network portion
The packets will be delivered and reassembled at destination.
Originate data flow.

28. 3 facts about the network portion of an IPv4 address
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. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. DB 60 b. Winchester 15-pin c. smart serial

29. What characteristic of an UTP helps reduce interference?
Twisting of the cables
The packets will be delivered and reassembled at destination.
Resolve IPv4 addresses to MAC addresses.
A default gateway (router).

30. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
The MAC protocol can be very simple.
A. servers b. routers c. network printers
SMB
Hosts return to listen-before-transmit mode.

31. What is the primary purpose of Layer 4?
Identify processes or services that are communicating with end devices.
Ctrl + Shift + 6
The packets will be delivered and reassembled at destination.
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

32. What is a default gateway address?

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33. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
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.
Ctrl + Shift + 6
A. identifies the communicating applications b. identifies multiple conversations between the hosts

34. 3 protocols that operate in the application layer
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
No collisions will occur on this link.
A. DNS b. SMTP c. POP
Network portion

35. Default Gateway is incorrect on the host - What is the impact on the communications?
Rollover cable
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
TCP initializes the sequence numbers for the sessions.
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

36. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. enable mode b. priviledge executive mode
255.255.255.224
A. performance degradation b. security issues c. host identification
Hosts return to listen-before-transmit mode.

37. What are 2 common characteristics associated w/ dynamic routing protocols?
It reduces unnecessary broadcasts.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Router(config)# hostname Costas
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

38. How many bits make up an IPv4 address?
It uses lasers as the light source.
32 bits
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Router(config)# hostname Costas

39. 3 statements of media acess control
A. not affected by EMI of RFI b. most expensive type of LAN 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
Console interface
Minimal delays in data delivery.

40. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
Source and Destination IP address
Any device whose backoff timer expires first.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
IP is not properly installed

41. Why are port numbers included in the TCP header of a segment?
32 bits
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
The physical address is added.
To enable a receiving host to forward the data to the appropriate application.

42. 2 functions of encapsulation
A. purpose b. geographic location c. ownership
A. larger address space b. data types and classes of service c. authentication and encryption
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 address

43. Network Protocols
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
MAC
Logical Link Control sublayer

44. During a TCP session - if packets arrive out of order - what will happen?
The magnetic field around the adjacent pairs of wire.
A. physical layer b. DLL layer
Source and Destination Ports
The packets will be delivered and reassembled at destination.

45. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
A. router b. firewall
A random delay helps prevent the stations from experiencing another collision during transmission.
8
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

46. During encapsulation - what happens in the Data Link Layer?
Network address
The physical address is added.
2046
Window Size

47. In a connectionless system - What is correct?
DNS
Destination is not contacted before a packet is sent.
172.16.192.160
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

48. What are 2 forms of application layer software?
Physical
As the commands are entered.
The packets will be delivered and reassembled at destination.
A. application b. services

49. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
To enable a receiving host to forward the data to the appropriate application.
Hub
SSH
Network Layer Packet

50. 3 statements about the role of routers in the network
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. netstat -r b. route PRINT
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry