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 role of the OSI Application Layer?
It provides for the exchange of data over a common local media.
It provides interface between applications on either end of the network.
Ctrl + Shift + 6
The magnetic field around the adjacent pairs of wire.

2. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
A. show startup-config b. show running-config
UDP
Any device whose backoff timer expires first.
Originate data flow.

3. What are the advantages of using a client-server model?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. addressing b. error detection c. frame delimiting
A. it has centralized administration b. security is easier to enforce
Is a layer of specific encapsulation.

4. What 2 type of cables would most commonly be used for new runs?
A. Cat5 UTP b. Cat6 UTP
They must wait until the first hosts finish transfering the media.
255.255.255.224
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

5. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
Physical
Network Access
UTP
A. next-hop b. metric/interface c. destination network address

6. What are 2 email components used to forward mail between servers?
Supports error detection.
Fiber
Next-Hop Address
A. MTA b. SMTP

7. What is the purpose of resource records in DNS?
255.255.255.224
Is used by the server to resolve names.
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. next-hop b. metric/interface c. destination network address

8. Which 2 options represent Layer 4 addressing?
Flash
A. identifies the communicating applications b. identifies multiple conversations between the hosts
8
A. DB 60 b. Winchester 15-pin c. smart serial

9. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
A. netstat -r b. route PRINT
A. HTTP b. HTTPS
Is used by the server to resolve names.
Network Layer Packet

10. Which device is used to create or divide broadcast domains?
Router
A. larger address space b. data types and classes of service c. authentication and encryption
Flash
The packets will be delivered and reassembled at destination.

11. What are 2 common characteristics associated w/ dynamic routing protocols?
RJ-45
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. it has centralized administration b. security is easier to enforce
To prevent the receiver from being overwhelmed by incoming data.

12. There are too many broadcasts on switches - what can be done?
Originate data flow.
A. purpose b. geographic location c. ownership
A. replace a switch w/ a router b. subnet the new networks
It provides for the exchange of data over a common local media.

13. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
UTP
MAC
To enable a receiving host to forward the data to the appropriate application.
It does not support encryption.

14. Which combination of keys can be used to interrupt a ping or traceroute process?
It uses support from the lower layers to distinguish between connections to the service.
The magnetic field around the adjacent pairs of wire.
Ctrl + Shift + 6
Logical Link Control sublayer

15. In a connectionless system - What is correct?
Network Media Control
Application Layer
TCP initializes the sequence numbers for the sessions.
Destination is not contacted before a packet is sent.

16. Why are port numbers included in the TCP header of a segment?
The packets will be delivered and reassembled at destination.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
It uses support from the lower layers to distinguish between connections to the service.
To enable a receiving host to forward the data to the appropriate application.

17. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
Is a layer of specific encapsulation.
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
IP is not properly installed

18. What can you identify when you examine the Network Layer header?
Router(config)# interface FastEthernet 0/1
A. Cat5 UTP b. Cat6 UTP
The destination host address.
Destination Network Address

19. Intermediary devices used to implement security between networks
A. copper UTP b. optical fiber
A. show startup-config b. show running-config
A. router b. firewall
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

20. What device can check for faults - integrity and performance of media?
A random delay helps prevent the stations from experiencing another collision during transmission.
OTDR
As the commands are entered.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

21. What is the role of MTA in handling email?
Destination Network Address
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Is a layer of specific encapsulation.
Rollover cable

22. What application layer protocol is used to support file transfers between client and server?
Network Media Control
DNS
FTP
Router(config)# interface FastEthernet 0/1

23. What is PDU?
Is a layer of specific encapsulation.
A. physical layer b. DLL layer
A. decentralized resources b. resource sharing w/o a dedicated server
Console

24. What describes the purpose of default route?
A. DB 60 b. Winchester 15-pin c. smart serial
No collisions will occur on this link.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

25. When a network service fails - which port is most often used to access a router for management purposes?
The destination host address.
Console
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
Network address

26. 3 measures of data transfer
A. non-deterministic b. less overhead c. collisions exist
A. goodput b. throughput c. bandwidth
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Identify processes or services that are communicating with end devices.

27. In business LANs - which connector is used w/ twisted-pair networking cable?
Show Interfaces
Rollover cable
RJ-45
Transport

28. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
As the commands are entered.
A. low overhead b. connectionless
Fiber
Signal loss can be experienced.

29. 2 characteristics of clients in data networks
As the commands are entered.
A. purpose b. geographic location c. ownership
Network
A. they initiate data exchanges b. they may upload data to servers

30. 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. router discards the packet b. router forwards the packet out the interface indicated in the route entry
2046
A default gateway (router).
Switch

31. If you have a PC - 3 routers and a Laptop... How many unique CRC calculation will take place as traffic routes from the PC to the Laptop?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Originate data flow.
8

32. What is a benefit of a WAN?
Host mobility
A. next-hop b. metric/interface c. destination network address
Any device whose backoff timer expires first.
A. purpose b. geographic location c. ownership

33. What networking devices are recommended to be assigned static IP addresses?
A. minimizing of collisions b. division into broadcast domains
Hub
A. servers b. routers c. network printers
A. MTA b. SMTP

34. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Physical
A. media sharing b. logical topology
Destination Network Address

35. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. non-deterministic b. less overhead c. collisions exist
Binary ANDing

36. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
It uses support from the lower layers to distinguish between connections to the service.
DNS
Router(config)# interface FastEthernet 0/1
Host A

37. 3 properties of peer-2-peer applications
Source and Destination IP address
32 bits
Supports error detection.
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

38. 3 factors that should be considered when implementing Layer 2 protocols
Transport
Is used by the server to resolve names.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

39. What is the primary function of encapsulating packets into frames?
Console interface
To facilitate the entry and exit of data on media.
It does not support encryption.
A. application b. presentation c. session d. transmision e. network f. data link g. physical

40. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
255.255.255.0
Static
RJ-45
A. Cat5 UTP b. Cat6 UTP

41. What can be a problem that is reduced by adding end-to-end addressing?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
It reduces unnecessary broadcasts.
UTP
Is used by the server to resolve names.

42. What does the IEEE 802.2 standard represent in Ethernet technologies?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Logical Link Control sublayer
It provides interface between applications on either end of the network.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

43. What is an automated service that matches resource names w/ required IP addresses?
0 to 1023
Console interface
Flash
DNS

44. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
255.255.255.224
Wireless
Time-to-live (TTL)
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

45. 3 characteristics of valid Ethernet Layer 2 addresses
It provides for the exchange of data over a common local media.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Physical
A. non-deterministic b. less overhead c. collisions exist

46. What characteristic of an UTP helps reduce interference?
Twisting of the cables
A. application b. services
RJ-45
Next-Hop Address

47. Default Gateway is incorrect on the host - What is the impact on the communications?
DNS
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
The address of the router that the host will use to 'get to the other side'.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

48. What do you need to use for an initial configuration on a Cisco router?
Console interface
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
32 bits
It provides for the exchange of data over a common local media.

49. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Identify processes or services that are communicating with end devices.
A. perform degradation b. security issues c. host identification
Transport
Signal loss can be experienced.

50. 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?
Router
A. show startup-config b. show running-config
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. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment