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. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Network Layer Packet
It does not support encryption.
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. show startup-config b. show running-config

2. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Binary ANDing
A. performance degradation b. security issues c. host identification
172.16.192.160
It has expanded adressing capabilities.

3. statements of IP adressing
A. the router will discard the packet b. the router will send a time exceeded message to the source host
DNS
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

4. What do the intermediary devices in the network do?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
MAC
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

5. During encapsulation - what happens in the Data Link Layer?
DNS
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. servers b. routers c. network printers
The physical address is added.

6. 3 statements about routes and their use
Hub
UTP
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. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

7. What are 2 email components used to forward mail between servers?
IP is not properly installed
A. MTA b. SMTP
Transport
As the commands are entered.

8. What can you identify when you examine the Network Layer header?
IP is not properly installed
Collisions can decrease network performance.
The destination host address.
Router

9. To make a console connection from a comp to a Cisco router - what cable should be used?
No collisions will occur on this link.
Rollover cable
Binary ANDing
Network Media Control

10. What layer encapsulates segments into packets?
The destination host address.
Network Layer
A. media sharing b. logical topology
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

11. Why is flow control used for TCP data transfer?
255.255.255.224
To prevent the receiver from being overwhelmed by incoming data.
IP is not properly installed
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

12. 2 functions of encapsulation
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Network Access
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
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

13. 3 terms that define the forms of help available within the Cisco IOS
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Minimal delays in data 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
A. hot keys b. context-sensitive c. command syntax check

14. 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. servers b. routers c. network printers
A. HTTP b. HTTPS
Is a layer of specific encapsulation.

15. What are 3 common problems w/ large networks?
TCP initializes the sequence numbers for the sessions.
Identify processes or services that are communicating with end devices.
A. perform degradation b. security issues c. host identification
IP Protocol

16. What are the advantages of using a client-server model?
Switch
A. it has centralized administration b. security is easier to enforce
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
IP Protocol

17. Why are port numbers included in the TCP header of a segment?
A. netstat -r b. route PRINT
To enable a receiving host to forward the data to the appropriate application.
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

18. What is a protocol that provides connectionless network layer services?
Network address
Rollover cable
IP is not properly installed
IP Protocol

19. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
Network Layer
255.255.255.224
MAC
Wireless

20. What determines the method of media access control?
A. media sharing b. logical topology
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Network address
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

21. What describes the purpose of default route?
A. media sharing b. logical topology
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Binary ANDing
The address of the router that the host will use to 'get to the other side'.

22. 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?
Host A
Source and Destination Ports
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Network

23. 3 features that allow TCP to realibly and accurately track the transmission of data
Window Size
A. flow control b. session establishment c. numbering and sequencing
IP Protocol
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

24. What is the primary reason for developing IPv6?
172.16.192.160
It has expanded adressing capabilities.
A. minimizing of collisions b. division into broadcast domains
Originate data flow.

25. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
IP is not properly installed
Supports error detection.
MAC
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

26. Which characteristics describe fiber optic cable?
The magnetic field around the adjacent pairs of wire.
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
A. not affected by EMI of RFI b. most expensive type of LAN cabling
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

27. What is the purpose of the preamble in an ethernet frame?
A. copper UTP b. optical fiber
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Logical Link Control sublayer
A backbone cable.

28. What command is used to change the default name to 'Costas'?
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
Router(config)# hostname Costas
It reduces unnecessary broadcasts.

29. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
255.255.255.224
UTP
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Identify processes or services that are communicating with end devices.

30. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
Supports error detection.
Signal loss can be experienced.
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 prevent the receiver from being overwhelmed by incoming data.

31. What is a default gateway address?

32. Default Gateway is incorrect on the host - What is the impact on the communications?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Hosts return to listen-before-transmit mode.
A. Physical b. Data Link
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

33. Which device is used to create or divide broadcast domains?
Switch
A. netstat -r b. route PRINT
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
Router

34. What is the primary purpose of ARP?
A. flow control b. session establishment c. numbering and sequencing
DNS
A backbone cable.
Resolve IPv4 addresses to MAC addresses.

35. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
Identify processes or services that are communicating with end devices.
A random delay helps prevent the stations from experiencing another collision during transmission.
Supports error detection.
FTP

36. What do you need to use for an initial configuration on a Cisco router?
Host mobility
The destination host address.
Console interface
Network Media Control

37. 3 factors that should be considered when implementing Layer 2 protocols
The destination host address.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Source and Destination Ports
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

38. 2 features that make switches preferable to hubs
A. servers b. routers c. network printers
A. physical layer b. DLL layer
Rollover cable
A. minimizing of collisions b. division into broadcast domains

39. What networking devices are recommended to be assigned static IP addresses?
A. Physical b. Data Link
A. servers b. routers c. network printers
Switch
Fiber

40. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
0 to 1023
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
A. non-deterministic b. less overhead c. collisions exist
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

41. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
MAC
32 bits
Wireless
Router(config)# interface FastEthernet 0/1

42. What can be a problem that is reduced by adding end-to-end addressing?
It reduces unnecessary broadcasts.
They must wait until the first hosts finish transfering the media.
A. application b. services
FTP

43. What are 3 properties of contention-based media access for a shared media?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. non-deterministic b. less overhead c. collisions exist
A. not affected by EMI of RFI b. most expensive type of LAN cabling

44. What are 3 pieces of info about a route contained in a routing table?
Console
A. media sharing b. logical topology
A. next-hop b. metric/interface c. destination network address
A. it has centralized administration b. security is easier to enforce

45. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Transport
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Switch
A. application b. services

46. Which portion of the network layer address does a router use to forward packets?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. replace a switch w/ a router b. subnet the new networks
Network portion

47. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Flash
To prevent the receiver from being overwhelmed by incoming data.
A. application b. services
Window Size

48. 3 statements about the role of routers in the network
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
RJ-45
A. show startup-config b. show running-config
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

49. What do end devices do?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Console
Originate data flow.

50. What device can check for faults - integrity and performance of media?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Window Size
OTDR
MAC