Test your basic knowledge |

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 is a disadvantage of Telnet?
It does not support encryption.
Console interface
The destination host address.
Supports error detection.

2. What is the primary reason for developing IPv6?
Identify processes or services that are communicating with end devices.
The physical address is added.
It has expanded adressing capabilities.
A. they initiate data exchanges b. they may upload data to servers

3. What type of routing uses information that is manually entered into the routing table?
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
SSH
A. minimizing of collisions b. division into broadcast domains
Static

4. Important characteristic of UDP
It reduces unnecessary broadcasts.
Minimal delays in data delivery.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

5. 2 things that will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. addressing b. error detection c. frame delimiting
SSH
They must wait until the first hosts finish transfering the media.

6. What is the primary function of encapsulating packets into frames?
DNS
A. flow control b. session establishment c. numbering and sequencing
To facilitate the entry and exit of data on media.
TCP initializes the sequence numbers for the sessions.

7. What determines the method of media access control?
A. media sharing b. logical topology
It does not support encryption.
A. servers b. routers c. network printers
MAC

8. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
Router
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
The address of the router that the host will use to 'get to the other side'.
A random delay helps prevent the stations from experiencing another collision during transmission.

9. There are too many broadcasts on switches - what can be done?
A. replace a switch w/ a router b. subnet the new networks
The magnetic field around the adjacent pairs of wire.
Application Layer
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

10. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
It uses lasers as the light source.
Network address
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

11. What makes fiber preferable to copper for interconnecting buildings?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Twisting of the cables
A. it has centralized administration b. security is easier to enforce

12. What are 3 properties of contention-based media access for a shared media?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Signal loss can be experienced.
A. non-deterministic b. less overhead c. collisions exist
Identify the device that allows local network computers to communicate w/ devices in other networks.

13. Statements that describe LAN
Hosts return to listen-before-transmit mode.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Originate data flow.

14. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
They must wait until the first hosts finish transfering the media.
UDP
255.255.255.224
A. replace a switch w/ a router b. subnet the new networks

15. What characteristic of an UTP helps reduce interference?
Twisting of the cables
As the commands are entered.
A. enable mode b. priviledge executive mode
FTP

16. 3 primary functions of the data link layer encapsulation
A. Physical b. Data Link
Ctrl + Shift + 6
A. addressing b. error detection c. frame delimiting
It provides interface between applications on either end of the network.

17. 3 characteristics of valid Ethernet Layer 2 addresses
Hosts return to listen-before-transmit mode.
A random delay helps prevent the stations from experiencing another collision during transmission.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Console

18. What is a default gateway address?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

19. If host A's DG is 10.0.0.1 and host B's DG is 10.0.0.2 - when the router's IP address is 10.0.0.1. Which one will go through?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
They must wait until the first hosts finish transfering the media.
Minimal delays in data delivery.
Host A

20. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Switch
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.
It uses lasers as the light source.

21. Which type of cable is most often associated w/ fiber-optic cable?
A. non-deterministic b. less overhead c. collisions exist
UDP
A backbone cable.
To prevent the receiver from being overwhelmed by incoming data.

22. Intermediary devices used to implement security between networks
Network portion
A. router b. firewall
A. decentralized resources b. resource sharing w/o a dedicated server
A. performance degradation b. security issues c. host identification

23. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Console interface
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Transport

24. What command can be used to determine if the router has experienced any input or output errors?
A. MTA b. SMTP
Is a layer of specific encapsulation.
Twisting of the cables
Show Interfaces

25. What networking devices are recommended to be assigned static IP addresses?
A. servers b. routers c. network printers
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Identify processes or services that are communicating with end devices.
Application Layer

26. What statements describe the logical token-passing topology?
A. minimizing of collisions b. division into broadcast domains
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A backbone cable.

27. Network Protocols
The destination host address.
A. decentralized resources b. resource sharing w/o a dedicated server
80 (HTTP)
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

28. 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)
Network portion
The physical address is added.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

29. When is a straight-through cable used in a network?
A. show startup-config b. show running-config
When connecting a host to a switch.
It uses lasers as the light source.
TCP initializes the sequence numbers for the sessions.

30. What is the role of the OSI Application Layer?
It provides interface between applications on either end of the network.
Source and Destination IP address
Hosts return to listen-before-transmit mode.
To facilitate the entry and exit of data on media.

31. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Window Size
Next-Hop Address
Network Access
DNS

32. 2 features that make switches preferable to hubs
A. minimizing of collisions b. division into broadcast domains
Network portion
They must wait until the first hosts finish transfering the media.
It provides for the exchange of data over a common local media.

33. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
UDP
Switch
Ctrl + Shift + 6
Destination is not contacted before a packet is sent.

34. What information is added during encapsulation at OSI Layer 3?
Source and Destination IP address
Time-to-live (TTL)
It provides for the exchange of data over a common local media.
Identify the device that allows local network computers to communicate w/ devices in other networks.

35. What is a benefit of a WAN?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Host mobility
Is used by the server to resolve names.
A. media sharing b. logical topology

36. 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
Flash
255.255.255.0
A. servers b. routers c. network printers

37. What method of signal transmission uses radio waves to carry signals?
Wireless
Ctrl + Shift + 6
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Binary ANDing

38. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
Physical
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. application b. presentation c. session d. transmision e. network f. data link g. physical
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

39. 3 functions of the upper data link sublayer in the OSI model
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. router b. firewall
DNS
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

40. Group of hosts that have identical bit patterns in the high order bits of their addresses
Network
As the commands are entered.
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. perform degradation b. security issues c. host identification

41. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Binary ANDing
A. decentralized resources b. resource sharing w/o a dedicated server
Destination Network Address
A. not affected by EMI of RFI b. most expensive type of LAN cabling

42. If you have a small network w/ 3 computers...
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. security is difficult to enforce b. if one of the computers is responding to file sharing requests - that computer is functioning as a server
When connecting a host to a switch.
Network Access

43. Why are port numbers included in the TCP header of a segment?
A. low overhead b. connectionless
To enable a receiving host to forward the data to the appropriate application.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

44. If you have a full-duplex operational network - what can happen?
No collisions will occur on this link.
A. the router will discard the packet b. the router will send a time exceeded message to the source host
172.16.192.160
A random delay helps prevent the stations from experiencing another collision during transmission.

45. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
Router
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
MAC
Source Port

46. Which device is used to create or divide broadcast domains?
A. they initiate data exchanges b. they may upload data to servers
The physical address is added.
MAC
Router

47. 3 statements about routes and their use
When connecting a host to a switch.
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
A. flow control b. session establishment c. numbering and sequencing
It uses support from the lower layers to distinguish between connections to the service.

48. What are 2 common characteristics associated w/ dynamic routing protocols?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
When connecting a host to a switch.
Signal loss can be experienced.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

49. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
A. Physical b. Data Link
Application Layer
A. purpose b. geographic location c. ownership
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

50. During a TCP session - if packets arrive out of order - what will happen?
The packets will be delivered and reassembled at destination.
Collisions can decrease network performance.
Originate data flow.
A. low overhead b. connectionless