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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. An admin needs to keep contents private - which access method should he use?
SSH
Fiber
255.255.255.0
To enable a receiving host to forward the data to the appropriate application.

2. What device can check for faults - integrity and performance of media?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
It uses support from the lower layers to distinguish between connections to the service.
OTDR
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

3. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
Time-to-live (TTL)
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
UTP
A. application b. services

4. 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?
A. non-deterministic b. less overhead c. collisions exist
2046
A. next-hop b. metric/interface c. destination network address
IP Protocol

5. What is the purpose of the TCP/IP Network Application Layer?
Network Media Control
It provides for the exchange of data over a common local media.
The packets will be delivered and reassembled at destination.
A. Physical b. Data Link

6. What are 2 forms of application layer software?
A. application b. services
TCP initializes the sequence numbers for the sessions.
A. goodput b. throughput c. bandwidth
Router

7. During a TCP session - if packets arrive out of order - what will happen?
FTP
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
The packets will be delivered and reassembled at destination.
Next-Hop Address

8. What are 3 common problems w/ large networks?
A. perform degradation b. security issues c. host identification
A. enable mode b. priviledge executive mode
A. non-deterministic b. less overhead c. collisions exist
Resolve IPv4 addresses to MAC addresses.

9. What determines the method of media access control?
Destination is not contacted before a packet is sent.
Is a layer of specific encapsulation.
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. media sharing b. logical topology

10. 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
Identify the device that allows local network computers to communicate w/ devices in other networks.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

11. What is a protocol that provides connectionless network layer services?
Logical Link Control sublayer
No collisions will occur on this link.
Switch
IP Protocol

12. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. DB 60 b. Winchester 15-pin c. smart serial
A. MTA b. SMTP
Source and Destination Ports

13. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
A. hot keys b. context-sensitive c. command syntax check
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Transport
80 (HTTP)

14. What are 2 commands used to view a host routing table?
A. netstat -r b. route PRINT
A. router b. firewall
Resolve IPv4 addresses to MAC addresses.
When connecting a host to a switch.

15. Which layer supplies services and allows user interface?
Application Layer
To facilitate the entry and exit of data on media.
A physical topology.
Next-Hop Address

16. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. enable mode b. priviledge executive mode
UTP
As the commands are entered.
It does not support encryption.

17. What is dinamically selected by the source host when forwarding data?
A. addressing b. error detection c. frame delimiting
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Source Port
A. enable mode b. priviledge executive mode

18. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
80 (HTTP)
2046
SSH
255.255.255.0

19. What are 2 common characteristics associated w/ dynamic routing protocols?
It provides interface between applications on either end of the network.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
255.255.255.224

20. Group of hosts that have identical bit patterns in the high order bits of their addresses
Network
A. media sharing b. logical topology
Source Port
A. larger address space b. data types and classes of service c. authentication and encryption

21. What makes fiber preferable to copper for interconnecting buildings?
A. purpose b. geographic location c. ownership
2046
Time-to-live (TTL)
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

22. What are 2 features of User Diagram Protocol (UDP)?
80 (HTTP)
Window Size
A. minimizing of collisions b. division into broadcast domains
A. low overhead b. connectionless

23. 3 properties of peer-2-peer applications
It uses lasers as the light source.
Physical
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. router b. firewall

24. What networking devices are recommended to be assigned static IP addresses?
Router(config)# interface FastEthernet 0/1
A. servers b. routers c. network printers
Twisting of the cables
Is used by the server to resolve names.

25. What are the advantages of using a client-server model?
Static
A. it has centralized administration b. security is easier to enforce
A. DNS b. SMTP c. POP
Console interface

26. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
A. physical layer b. DLL layer
A. next-hop b. metric/interface c. destination network address
A random delay helps prevent the stations from experiencing another collision during transmission.
Logical Link Control sublayer

27. In a connectionless system - What is correct?
Destination is not contacted before a packet is sent.
Console interface
SMB
Router(config)# hostname Costas

28. 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?
Is a layer of specific encapsulation.
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
Console interface
A. show startup-config b. show running-config

29. Network Protocols
A. Cat5 UTP b. Cat6 UTP
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
255.255.255.224
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

30. What layer encapsulates segments into packets?
A. addressing b. error detection c. frame delimiting
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
As the commands are entered.
Network Layer

31. Intermediary devices used to implement security between networks
A. router b. firewall
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
The packets will be delivered and reassembled at destination.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

32. What info is found in the TCP and UDP header info?
80 (HTTP)
Source and Destination Ports
Hosts return to listen-before-transmit mode.
Console

33. There are too many broadcasts on switches - what can be done?
A. replace a switch w/ a router b. subnet the new networks
Binary ANDing
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
FTP

34. statements of IP adressing
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
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. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Source and Destination Ports

35. What are 2 email components used to forward mail between servers?
A. MTA b. SMTP
It uses support from the lower layers to distinguish between connections to the service.
A default gateway (router).
A. perform degradation b. security issues c. host identification

36. 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?
Network Layer Packet
SSH
They must wait until the first hosts finish transfering the media.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

37. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
SMB
The destination host address.
2046
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

38. When do changes take effect in a Cisco router?
As the commands are entered.
Resolve IPv4 addresses to MAC addresses.
A. application b. services
The packets will be delivered and reassembled at destination.

39. After an ethernet collision - which device has priority to transmit data?
Any device whose backoff timer expires first.
Collisions can decrease network performance.
Network Layer
A. decentralized resources b. resource sharing w/o a dedicated server

40. 3 factors that should be considered when implementing Layer 2 protocols
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
172.16.192.160
A. media sharing b. logical topology
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

41. What 2 type of cables would most commonly be used for new runs?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. Cat5 UTP b. Cat6 UTP
RJ-45
Time-to-live (TTL)

42. 3 features of IPv6
Originate data flow.
It reduces unnecessary broadcasts.
A. they initiate data exchanges b. they may upload data to servers
A. larger address space b. data types and classes of service c. authentication and encryption

43. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Destination Network Address

44. What are 2 protocols for transfering web resources?
A. copper UTP b. optical fiber
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. HTTP b. HTTPS
Network address

45. What is PDU?
FTP
Minimal delays in data delivery.
Resolve IPv4 addresses to MAC addresses.
Is a layer of specific encapsulation.

46. What is the role of MTA in handling email?
UTP
Network address
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. non-deterministic b. less overhead c. collisions exist

47. How many bits make up an IPv4 address?
RJ-45
32 bits
Twisting of the cables
A default gateway (router).

48. What are 3 properties of contention-based media access for a shared media?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Network Access
255.255.255.224
A. non-deterministic b. less overhead c. collisions exist

49. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Router
UDP
Window Size
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

50. What do the intermediary devices in the network do?
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. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. show startup-config b. show running-config
A. router b. firewall