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 are 3 pieces of info about a route contained in a routing table?
A. next-hop b. metric/interface c. destination network address
A. addressing b. error detection c. frame delimiting
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A physical topology.

2. 2 most commonly used media types in ethernet networks
Rollover cable
2046
A. copper UTP b. optical fiber
32 bits

3. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
255.255.255.224
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
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
It uses lasers as the light source.

4. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
It uses support from the lower layers to distinguish between connections to the service.
Switch
Rollover cable
It has expanded adressing capabilities.

5. What is a component of a routing table entry?
A. HTTP b. HTTPS
Rollover cable
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Next-Hop Address

6. What layer encapsulates segments into packets?
Network Layer
Network
Next-Hop Address
IP Protocol

7. To make a console connection from a comp to a Cisco router - what cable should be used?
Hub
IP is not properly installed
Rollover cable
MAC

8. Which 2 options represent Layer 4 addressing?
It uses support from the lower layers to distinguish between connections to the service.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Hub

9. What describes the purpose of default route?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. copper UTP b. optical fiber
Destination Network Address
Collisions can decrease network performance.

10. What method of signal transmission uses radio waves to carry signals?
Resolve IPv4 addresses to MAC addresses.
MAC
Wireless
Is used by the server to resolve names.

11. If you have a full-duplex operational network - what can happen?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
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
No collisions will occur on this link.

12. What is a protocol that provides connectionless network layer services?
A physical topology.
IP Protocol
To prevent the receiver from being overwhelmed by incoming data.
UTP

13. Why is flow control used for TCP data transfer?
Is used by the server to resolve names.
A. low overhead b. connectionless
To prevent the receiver from being overwhelmed by incoming data.
It provides for the exchange of data over a common local media.

14. What command is used to change the default name to 'Costas'?
The destination host address.
It provides for the exchange of data over a common local media.
Router(config)# hostname Costas
No collisions will occur on this link.

15. Which device is used to create or divide broadcast domains?
It reduces unnecessary broadcasts.
A. DB 60 b. Winchester 15-pin c. smart serial
It provides interface between applications on either end of the network.
Router

16. Default Gateway is incorrect on the host - What is the impact on the communications?
Network Access
A. enable mode b. priviledge executive mode
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)

17. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Fiber
To prevent the receiver from being overwhelmed by incoming data.
DNS
Logical Link Control sublayer

18. 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. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Ctrl + Shift + 6
Host A
2046

19. What are 2 commands used to view a host routing table?
Is used by the server to resolve names.
0 to 1023
A. netstat -r b. route PRINT
Network Layer

20. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
A. goodput b. throughput c. bandwidth
A random delay helps prevent the stations from experiencing another collision during transmission.
It does not support encryption.
Window Size

21. What are 2 forms of application layer software?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
They must wait until the first hosts finish transfering the media.
A. application b. services
A. they initiate data exchanges b. they may upload data to servers

22. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Network
Network Access
A. Physical b. Data Link
Binary ANDing

23. What is the purpose of a default gateway?
A. MTA b. SMTP
A. netstat -r b. route PRINT
172.16.192.160
Identify the device that allows local network computers to communicate w/ devices in other networks.

24. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Network Layer
The MAC protocol can be very simple.
Transport
Show Interfaces

25. What type of network cable is used between a terminal and a console port?
OTDR
A. Physical b. Data Link
Rollover cable
Binary ANDing

26. What is the role of MTA in handling email?
Is used by the server to resolve names.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Hub
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

27. 3 factors that should be considered when implementing Layer 2 protocols
80 (HTTP)
A. it has centralized administration b. security is easier to enforce
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

28. 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
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.
UTP

29. 3 functions of the upper data link sublayer in the OSI model
Destination Network Address
A. low overhead b. connectionless
Host A
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

30. During a TCP session - if packets arrive out of order - what will happen?
It provides interface between applications on either end of the network.
The packets will be delivered and reassembled at destination.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Hub

31. What information is added during encapsulation at OSI Layer 3?
Hosts return to listen-before-transmit mode.
Source and Destination IP address
Resolve IPv4 addresses to MAC addresses.
A. decentralized resources b. resource sharing w/o a dedicated server

32. statements of IP adressing
The address of the router that the host will use to 'get to the other side'.
Router(config)# hostname Costas
It provides for the exchange of data over a common local media.
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

33. What is the purpose of resource records in DNS?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Network Access
Is used by the server to resolve names.
A. servers b. routers c. network printers

34. What are 2 common characteristics associated w/ dynamic routing protocols?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
To enable a receiving host to forward the data to the appropriate application.
A. low overhead b. connectionless
UTP

35. What do the intermediary devices in the network do?
255.255.255.0
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
IP is not properly installed
A. next-hop b. metric/interface c. destination network address

36. Network Protocols
255.255.255.0
A. hot keys b. context-sensitive c. command syntax check
A. they initiate data exchanges b. they may upload data to servers
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

37. During encapsulation - what happens in the Data Link Layer?
Rollover cable
Twisting of the cables
A. DB 60 b. Winchester 15-pin c. smart serial
The physical address is added.

38. 2 characteristics of peer-2-peer
Signal loss can be experienced.
MAC
A. decentralized resources b. resource sharing w/o a dedicated server
It uses lasers as the light source.

39. What info is found in the TCP and UDP header info?
Network Access
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Source and Destination Ports
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

40. In a connectionless system - What is correct?
Show Interfaces
Destination is not contacted before a packet is sent.
The magnetic field around the adjacent pairs of wire.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

41. What can you identify when you examine the Network Layer header?
A. router b. firewall
Source and Destination Ports
Network
The destination host address.

42. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
Network Layer Packet
SMB
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

43. 3 statements about routes and their use
Fiber
Resolve IPv4 addresses to MAC addresses.
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. not affected by EMI of RFI b. most expensive type of LAN cabling

44. Which layer supplies services and allows user interface?
Application Layer
Source and Destination Ports
Network Access
A. physical layer b. DLL layer

45. 3 terms that define the forms of help available within the Cisco IOS
Host A
A. hot keys b. context-sensitive c. command syntax check
Console
The destination host address.

46. 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
Identify processes or services that are communicating with end devices.
Application Layer
To enable a receiving host to forward the data to the appropriate application.
A. the router will discard the packet b. the router will send a time exceeded message to the source host

47. What can get you to an outside network?
A default gateway (router).
Binary ANDing
A backbone cable.
A physical topology.

48. What is the purpose of the TCP/IP Network Application Layer?
Is used by the server to resolve names.
Fiber
Network Media Control
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

49. What do you need to use for an initial configuration on a Cisco router?
SMB
Next-Hop Address
Console interface
Identify the device that allows local network computers to communicate w/ devices in other networks.

50. What event occurs during the 3-way handshake?
It does not support encryption.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
TCP initializes the sequence numbers for the sessions.
Ctrl + Shift + 6