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 default gateway address?

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2. 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?
A. show startup-config b. show running-config
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Rollover cable
Window Size

3. What determines the method of media access control?
UDP
A. media sharing b. logical topology
A. perform degradation b. security issues c. host identification
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

4. 3 terms that define the forms of help available within the Cisco IOS
Logical Link Control sublayer
Originate data flow.
A. hot keys b. context-sensitive c. command syntax check
Network Media Control

5. What is the purpose of the TCP/IP Network Application Layer?
Network Media Control
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
IP Protocol
FTP

6. What correctly describes a MAC address?
Network address
Time-to-live (TTL)
Source Port
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

7. When is a straight-through cable used in a network?
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
When connecting a host to a switch.

8. Why is flow control used for TCP data transfer?
To prevent the receiver from being overwhelmed by incoming data.
A. DB 60 b. Winchester 15-pin c. smart serial
Wireless
SMB

9. 3 common problems w/ a large network
TCP initializes the sequence numbers for the sessions.
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
The address of the router that the host will use to 'get to the other side'.
A. performance degradation b. security issues c. host identification

10. There are 4 different hosts connected to a hub - media is being transfered between 2 of them but the other 2 will also like to transfer media. What must the latest hosts do to transfer the media?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
They must wait until the first hosts finish transfering the media.
Logical Link Control sublayer
A. application b. services

11. 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.
Rollover cable
Router(config)# interface FastEthernet 0/1
A. larger address space b. data types and classes of service c. authentication and encryption

12. What are 3 common problems w/ large networks?
A. perform degradation b. security issues c. host identification
A physical topology.
The physical address is added.
Console

13. 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
A. flow control b. session establishment c. numbering and sequencing
A. they initiate data exchanges b. they may upload data to servers
A backbone cable.

14. 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
Supports error detection.
Collisions can decrease network performance.
Router(config)# hostname Costas

15. 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?
Network portion
Rollover cable
A. perform degradation b. security issues c. host identification
Host A

16. Which combination of keys can be used to interrupt a ping or traceroute process?
It uses lasers as the light source.
Ctrl + Shift + 6
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A random delay helps prevent the stations from experiencing another collision during transmission.

17. During encapsulation - what happens in the Data Link Layer?
A. addressing b. error detection c. frame delimiting
A. next-hop b. metric/interface c. destination network address
The physical address is added.
Supports error detection.

18. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Hub
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Identify processes or services that are communicating with end devices.
Physical

19. What event occurs during the 3-way handshake?
TCP initializes the sequence numbers for the sessions.
Console
Source and Destination IP address
Ctrl + Shift + 6

20. What is the primary purpose of Layer 4?
It provides for the exchange of data over a common local media.
Identify processes or services that are communicating with end devices.
A. non-deterministic b. less overhead c. collisions exist
It provides interface between applications on either end of the network.

21. What is PDU?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Show Interfaces
Destination is not contacted before a packet is sent.
Is a layer of specific encapsulation.

22. Intermediary devices used to implement security between networks
A. media sharing b. logical topology
A. router b. firewall
The address of the router that the host will use to 'get to the other side'.
A. DNS b. SMTP c. POP

23. 3 factors that should be considered when implementing Layer 2 protocols
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
80 (HTTP)
A. MTA b. SMTP

24. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
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. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
It has expanded adressing capabilities.
255.255.255.224

25. What is the primary reason for developing IPv6?
To enable a receiving host to forward the data to the appropriate application.
Rollover cable
To prevent the receiver from being overwhelmed by incoming data.
It has expanded adressing capabilities.

26. What method of signal transmission uses radio waves to carry signals?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A backbone cable.
Wireless
Originate data flow.

27. What is dinamically selected by the source host when forwarding data?
Source Port
OTDR
Window Size
Destination is not contacted before a packet is sent.

28. During a TCP session - if packets arrive out of order - what will happen?
Rollover cable
The packets will be delivered and reassembled at destination.
No collisions will occur on this link.
OTDR

29. Important characteristic of UDP
A default gateway (router).
Minimal delays in data delivery.
A. media sharing b. logical topology
It provides for the exchange of data over a common local media.

30. What is the function of the DLL?
It provides for the exchange of data over a common local media.
Hosts return to listen-before-transmit mode.
A. show startup-config b. show running-config
IP is not properly installed

31. What can get you to an outside network?
A. goodput b. throughput c. bandwidth
A default gateway (router).
OTDR
It reduces unnecessary broadcasts.

32. Which IP packet field will prevent endless loops?
A. Cat5 UTP b. Cat6 UTP
Time-to-live (TTL)
A. Physical b. Data Link
A. next-hop b. metric/interface c. destination network address

33. There are too many broadcasts on switches - what can be done?
A. replace a switch w/ a router b. subnet the new networks
A. performance degradation b. security issues c. host identification
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Identify processes or services that are communicating with end devices.

34. 2 characteristics of peer-2-peer
A. decentralized resources b. resource sharing w/o a dedicated server
A. flow control b. session establishment c. numbering and sequencing
A. Cat5 UTP b. Cat6 UTP
It uses support from the lower layers to distinguish between connections to the service.

35. Network Protocols
Time-to-live (TTL)
A. perform degradation b. security issues c. host identification
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. copper UTP b. optical fiber

36. If there is a graphic representation of a company network wiring and equipment - What is this called?
A. MTA b. SMTP
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
FTP
A physical topology.

37. 3 facts about the network portion of an IPv4 address
The magnetic field around the adjacent pairs of wire.
The MAC protocol can be very simple.
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

38. What are 2 commands used to view a host routing table?
A. netstat -r b. route PRINT
A. enable mode b. priviledge executive mode
It uses support from the lower layers to distinguish between connections to the service.
Wireless

39. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
It reduces unnecessary broadcasts.
It provides interface between applications on either end of the network.
SMB
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

40. Group of hosts that have identical bit patterns in the high order bits of their addresses
A. copper UTP b. optical fiber
Network
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. identifies the communicating applications b. identifies multiple conversations between the hosts

41. 3 features that allow TCP to realibly and accurately track the transmission of data
A. flow control b. session establishment c. numbering and sequencing
A. addressing b. error detection c. frame delimiting
0 to 1023
A. the router will discard the packet b. the router will send a time exceeded message to the source host

42. What type of routing uses information that is manually entered into the routing table?
A. decentralized resources b. resource sharing w/o a dedicated server
A. they initiate data exchanges b. they may upload data to servers
Source and Destination Ports
Static

43. What is a disadvantage of Telnet?
A. netstat -r b. route PRINT
Create signals that represent the bits in each frame for the media.
It does not support encryption.
A. goodput b. throughput c. bandwidth

44. When a device is moved from one network to the other...?
A. larger address space b. data types and classes of service c. authentication and encryption
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Collisions can decrease network performance.
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

45. What is an effect of improperly applying a network cable connector?
When connecting a host to a switch.
The magnetic field around the adjacent pairs of wire.
Signal loss can be experienced.
Physical

46. What information is added during encapsulation at OSI Layer 3?
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
A. Cat5 UTP b. Cat6 UTP
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Source and Destination IP address

47. What is the primary rope of the physical layer in transmitting data?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Create signals that represent the bits in each frame for the media.
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. flow control b. session establishment c. numbering and sequencing

48. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A random delay helps prevent the stations from experiencing another collision during transmission.
A physical topology.
A. enable mode b. priviledge executive mode
Network portion

49. Which 2 options represent Layer 4 addressing?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. servers b. routers c. network printers
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Collisions can decrease network performance.

50. Which characteristics describe fiber optic cable?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. low overhead b. connectionless
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
To enable a receiving host to forward the data to the appropriate application.