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 the primary function of encapsulating packets into frames?
It provides interface between applications on either end of the network.
A. hot keys b. context-sensitive c. command syntax check
To facilitate the entry and exit of data on media.
IP is not properly installed

2. What is the function of the DLL?
A. next-hop b. metric/interface c. destination network address
It provides for the exchange of data over a common local media.
The packets will be delivered and reassembled at destination.
Application Layer

3. What are 2 commands used to view a host routing table?
Network Access
A. netstat -r b. route PRINT
Source Port
A. minimizing of collisions b. division into broadcast domains

4. What is an effect of improperly applying a network cable connector?
A. larger address space b. data types and classes of service c. authentication and encryption
Source and Destination Ports
Signal loss can be experienced.
It provides for the exchange of data over a common local media.

5. What is a drawback of the CSMA/CD access method?
A. non-deterministic b. less overhead c. collisions exist
Collisions can decrease network performance.
Identify processes or services that are communicating with end devices.
It does not support encryption.

6. What is a characteristic of a logical point-to-point topology?
A default gateway (router).
It reduces unnecessary broadcasts.
The MAC protocol can be very simple.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

7. Network Protocols
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
255.255.255.0
A. enable mode b. priviledge executive mode
A. perform degradation b. security issues c. host identification

8. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
A. MTA b. SMTP
Supports error detection.
Destination is not contacted before a packet is sent.
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

9. Default Gateway is incorrect on the host - What is the impact on the communications?
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.
Router(config)# hostname Costas
Create signals that represent the bits in each frame for the media.

10. 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
Source Port
Transport
Supports error detection.

11. After an ethernet collision - which device has priority to transmit data?
Any device whose backoff timer expires first.
Window Size
Destination is not contacted before a packet is sent.
Binary ANDing

12. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. media sharing b. logical topology
MAC
A. application b. presentation c. session d. transmision e. network f. data link g. physical

13. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Hosts return to listen-before-transmit mode.
Flash
Resolve IPv4 addresses to MAC addresses.
Hub

14. What information is added during encapsulation at OSI Layer 3?
Source and Destination IP address
A. addressing b. error detection c. frame delimiting
Flash
A. non-deterministic b. less overhead c. collisions exist

15. Group of hosts that have identical bit patterns in the high order bits of their addresses
Switch
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Source and Destination Ports
Network

16. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Application Layer
Fiber
MAC
A. router b. firewall

17. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Is used by the server to resolve names.
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
IP is not properly installed

18. If there is a graphic representation of a company network wiring and equipment - What is this called?
It has expanded adressing capabilities.
A physical topology.
Transport
They must wait until the first hosts finish transfering the media.

19. What do you need to use for an initial configuration on a Cisco router?
UDP
A. physical layer b. DLL layer
Console interface
The physical address is added.

20. statements of IP adressing
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
Destination Network Address
Originate data flow.
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

21. What is a disadvantage of Telnet?
A backbone cable.
It does not support encryption.
Network Layer
They must wait until the first hosts finish transfering the media.

22. Where is the IOS file stored at?
Console interface
It uses lasers as the light source.
Wireless
Flash

23. Which device is used to create or divide broadcast domains?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Router(config)# hostname Costas
Destination Network Address
Router

24. What are 3 common problems w/ large networks?
32 bits
A. non-deterministic b. less overhead c. collisions exist
A. perform degradation b. security issues c. host identification
Destination Network Address

25. When do changes take effect in a Cisco router?
When connecting a host to a switch.
Supports error detection.
As the commands are entered.
Console

26. What can you identify when you examine the Network Layer header?
The destination host address.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. physical layer b. DLL layer
32 bits

27. What are 2 common characteristics associated w/ dynamic routing protocols?
A. Physical b. Data Link
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
To facilitate the entry and exit of data on media.
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

28. 2 characteristics of clients in data networks
Router(config)# interface FastEthernet 0/1
Router
Ctrl + Shift + 6
A. they initiate data exchanges b. they may upload data to servers

29. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. perform degradation b. security issues c. host identification
A. enable mode b. priviledge executive mode
Next-Hop Address
It has expanded adressing capabilities.

30. An admin needs to keep contents private - which access method should he use?
SSH
Console
A. they initiate data exchanges b. they may upload data to servers
A. it has centralized administration b. security is easier to enforce

31. What determines the method of media access control?
A. media sharing b. logical topology
80 (HTTP)
It provides interface between applications on either end of the network.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

32. Statements that describe LAN
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
The packets will be delivered and reassembled at destination.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Any device whose backoff timer expires first.

33. Important characteristic of UDP
Minimal delays in data delivery.
Is used by the server to resolve names.
Any device whose backoff timer expires first.
A. router b. firewall

34. 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?
To prevent the receiver from being overwhelmed by incoming data.
Any device whose backoff timer expires first.
A. show startup-config b. show running-config
SSH

35. What event occurs during the 3-way handshake?
To enable a receiving host to forward the data to the appropriate application.
TCP initializes the sequence numbers for the sessions.
A. router b. firewall
A. DNS b. SMTP c. POP

36. Which characteristics describe fiber optic cable?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
To prevent the receiver from being overwhelmed by incoming data.
Signal loss can be experienced.
Binary ANDing

37. What type of network cable is used between a terminal and a console port?
Is a layer of specific encapsulation.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Rollover cable
A. show startup-config b. show running-config

38. 2 functions of encapsulation
Console interface
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
A. Cat5 UTP b. Cat6 UTP

39. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Destination Network Address
A. copper UTP b. optical fiber
Is used by the server to resolve names.

40. What are 2 forms of application layer software?
A. application b. services
Supports error detection.
A backbone cable.
Source and Destination IP address

41. 3 functions of the upper data link sublayer in the OSI model
A. decentralized resources b. resource sharing w/o a dedicated server
Rollover cable
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Twisting of the cables

42. What command can be used to determine if the router has experienced any input or output errors?
Network portion
Show Interfaces
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
They must wait until the first hosts finish transfering the media.

43. What are 3 pieces of info about a route contained in a routing table?
Source and Destination IP address
A. next-hop b. metric/interface c. destination network address
It provides for the exchange of data over a common local media.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

44. What is dinamically selected by the source host when forwarding data?
UTP
Source Port
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Fiber

45. What layer encapsulates segments into packets?
To prevent the receiver from being overwhelmed by incoming data.
Network Layer
A. perform degradation b. security issues c. host identification
A. physical layer b. DLL layer

46. 3 terms that define the forms of help available within the Cisco IOS
A. hot keys b. context-sensitive c. command syntax check
To prevent the receiver from being overwhelmed by incoming data.
TCP initializes the sequence numbers for the sessions.
IP is not properly installed

47. What is an automated service that matches resource names w/ required IP addresses?
Time-to-live (TTL)
DNS
Source Port
As the commands are entered.

48. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
The destination host address.
It has expanded adressing capabilities.
Router(config)# interface FastEthernet 0/1
Application Layer

49. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
Host A
SMB
A. perform degradation b. security issues c. host identification
It provides interface between applications on either end of the network.

50. 3 statements about the role of routers in the network
Next-Hop Address
It provides for the exchange of data over a common local media.
It reduces unnecessary broadcasts.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet