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. To make a console connection from a comp to a Cisco router - what cable should be used?
Network
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
The packets will be delivered and reassembled at destination.
Rollover cable

2. What characteristic of an UTP helps reduce interference?
Window Size
Twisting of the cables
Router(config)# interface FastEthernet 0/1
A. not affected by EMI of RFI b. most expensive type of LAN cabling

3. 2 functions of encapsulation
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
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
Router

4. What can be a problem that is reduced by adding end-to-end addressing?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
It reduces unnecessary broadcasts.
Transport

5. What is PDU?
Is a layer of specific encapsulation.
A. the router will discard the packet b. the router will send a time exceeded message to the source host
It provides interface between applications on either end of the network.
DNS

6. What is a disadvantage of Telnet?
They must wait until the first hosts finish transfering the media.
IP is not properly installed
It does not support encryption.
It reduces unnecessary broadcasts.

7. When a device is moved from one network to the other...?
A physical topology.
No collisions will occur on this link.
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
As the commands are entered.

8. During a TCP session - if packets arrive out of order - what will happen?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
The physical address is added.
A. next-hop b. metric/interface c. destination network address
The packets will be delivered and reassembled at destination.

9. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Transport
A default gateway (router).
A. it has centralized administration b. security is easier to enforce
A. MTA b. SMTP

10. 2 characteristics of peer-2-peer
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. Cat5 UTP b. Cat6 UTP
A. enable mode b. priviledge executive mode
A. decentralized resources b. resource sharing w/o a dedicated server

11. When do changes take effect in a Cisco router?
A. show startup-config b. show running-config
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. hot keys b. context-sensitive c. command syntax check
As the commands are entered.

12. 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?
They must wait until the first hosts finish transfering the media.
A random delay helps prevent the stations from experiencing another collision during transmission.
255.255.255.0
Signal loss can be experienced.

13. What are 2 commands used to view a host routing table?
It uses lasers as the light source.
Window Size
255.255.255.224
A. netstat -r b. route PRINT

14. Which IP packet field will prevent endless loops?
Network
Source and Destination Ports
Time-to-live (TTL)
Fiber

15. What type of routing uses information that is manually entered into the routing table?
Hosts return to listen-before-transmit mode.
Static
Console interface
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

16. 3 terms that define the forms of help available within the Cisco IOS
To enable a receiving host to forward the data to the appropriate application.
A. hot keys b. context-sensitive c. command syntax check
Network portion
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

17. Important characteristic of UDP
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Source Port
Minimal delays in data delivery.
Rollover cable

18. Where is the IOS file stored at?
Flash
As the commands are entered.
Hosts return to listen-before-transmit mode.
A. application b. services

19. If there is a graphic representation of a company network wiring and equipment - What is this called?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A physical topology.
A. flow control b. session establishment c. numbering and sequencing
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

20. What is a drawback of the CSMA/CD access method?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Collisions can decrease network performance.
Hub
The MAC protocol can be very simple.

21. 3 features of IPv6
A. show startup-config b. show running-config
Router
A. larger address space b. data types and classes of service c. authentication and encryption
A. copper UTP b. optical fiber

22. What are 3 common problems w/ large networks?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Static
8
A. perform degradation b. security issues c. host identification

23. What is the function of the DLL?
It provides for the exchange of data over a common local media.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. addressing b. error detection c. frame delimiting
A. purpose b. geographic location c. ownership

24. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
To facilitate the entry and exit of data on media.
Window Size
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Identify processes or services that are communicating with end devices.

25. What are 3 pieces of info about a route contained in a routing table?
Window Size
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
A. next-hop b. metric/interface c. destination network address

26. What is an effect of improperly applying a network cable connector?
Signal loss can be experienced.
Rollover cable
Binary ANDing
It uses support from the lower layers to distinguish between connections to the service.

27. What describes the purpose of default route?
To facilitate the entry and exit of data on media.
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
Source and Destination IP address

28. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Switch
A. DB 60 b. Winchester 15-pin c. smart serial
Host A
2046

29. 3 primary functions of the data link layer encapsulation
A. addressing b. error detection c. frame delimiting
A. application b. services
Router(config)# interface FastEthernet 0/1
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

30. What command is used to change the default name to 'Costas'?
A. larger address space b. data types and classes of service c. authentication and encryption
Router(config)# hostname Costas
A. HTTP b. HTTPS
A. replace a switch w/ a router b. subnet the new networks

31. Which layer supplies services and allows user interface?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
The physical address is added.
Application Layer

32. What is the primary purpose of ARP?
Resolve IPv4 addresses to MAC addresses.
A backbone cable.
A random delay helps prevent the stations from experiencing another collision during transmission.
Network Layer Packet

33. What does the IEEE 802.2 standard represent in Ethernet technologies?
Signal loss can be experienced.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
SSH
Logical Link Control sublayer

34. What do end devices do?
Rollover cable
Originate data flow.
Window Size
A. minimizing of collisions b. division into broadcast domains

35. 2 features that make switches preferable to hubs
A. flow control b. session establishment c. numbering and sequencing
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. minimizing of collisions b. division into broadcast domains
A physical topology.

36. 3 functions of the upper data link sublayer in the OSI model
A. servers b. routers c. network printers
The address of the router that the host will use to 'get to the other side'.
A. decentralized resources b. resource sharing w/o a dedicated server
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

37. 2 most commonly used media types in ethernet networks
Host mobility
A. copper UTP b. optical fiber
As the commands are entered.
Network portion

38. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
172.16.192.160
A. decentralized resources b. resource sharing w/o a dedicated server
The magnetic field around the adjacent pairs of wire.
A random delay helps prevent the stations from experiencing another collision during transmission.

39. There are too many broadcasts on switches - what can be done?
A. replace a switch w/ a router b. subnet the new networks
UTP
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Switch

40. What is the primary purpose of Layer 4?
A. larger address space b. data types and classes of service c. authentication and encryption
Network address
SSH
Identify processes or services that are communicating with end devices.

41. 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
Time-to-live (TTL)
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Application Layer
A. media sharing b. logical topology

42. Which device is used to create or divide broadcast domains?
Collisions can decrease network performance.
Twisting of the cables
A. Physical b. Data Link
Router

43. 3 common problems w/ a large network
A. performance degradation b. security issues c. host identification
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Wireless
Ctrl + Shift + 6

44. What layer encapsulates segments into packets?
A. low overhead b. connectionless
A. goodput b. throughput c. bandwidth
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Network Layer

45. What is the purpose of a default gateway?
A. decentralized resources b. resource sharing w/o a dedicated server
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
They must wait until the first hosts finish transfering the media.
Identify the device that allows local network computers to communicate w/ devices in other networks.

46. What is the purpose of the preamble in an ethernet frame?
A. purpose b. geographic location c. ownership
Host mobility
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
255.255.255.224

47. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
255.255.255.224
8
To facilitate the entry and exit of data on media.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

48. 3 statements about the role of routers in the network
A. MTA b. SMTP
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Source Port
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

49. What is an automated service that matches resource names w/ required IP addresses?
Router(config)# hostname Costas
172.16.192.160
DNS
Hosts return to listen-before-transmit mode.

50. What event occurs during the 3-way handshake?
Transport
A. addressing b. error detection c. frame delimiting
TCP initializes the sequence numbers for the sessions.
Router