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. 3 terms that define the forms of help available within the Cisco IOS
Application Layer
255.255.255.224
A. hot keys b. context-sensitive c. command syntax check
When connecting a host to a switch.

2. During a TCP session - if packets arrive out of order - what will happen?
255.255.255.0
FTP
Originate data flow.
The packets will be delivered and reassembled at destination.

3. How many bits make up an IPv4 address?
32 bits
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Console interface
Hub

4. What is the role of the OSI Application Layer?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Network Access
It provides interface between applications on either end of the network.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

5. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
A random delay helps prevent the stations from experiencing another collision during transmission.
0 to 1023
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. flow control b. session establishment c. numbering and sequencing

6. What type of routing uses information that is manually entered into the routing table?
A. purpose b. geographic location c. ownership
A. larger address space b. data types and classes of service c. authentication and encryption
Static
The address of the router that the host will use to 'get to the other side'.

7. If there is a graphic representation of a company network wiring and equipment - What is this called?
Collisions can decrease network performance.
A physical topology.
A. show startup-config b. show running-config
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

8. 2 characteristics of peer-2-peer
MAC
A. decentralized resources b. resource sharing w/o a dedicated server
Show Interfaces
Wireless

9. Where is the IOS file stored at?
Flash
Network portion
Binary ANDing
A. the router will discard the packet b. the router will send a time exceeded message to the source host

10. What can get you to an outside network?
Destination Network Address
Host mobility
SMB
A default gateway (router).

11. What is the proper order of the OSI Layers?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. larger address space b. data types and classes of service c. authentication and encryption
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
Is a layer of specific encapsulation.

12. What is the role of MTA in handling email?
Is a layer of specific encapsulation.
TCP initializes the sequence numbers for the sessions.
A. perform degradation b. security issues c. host identification
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

13. 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
Show Interfaces
Console interface
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

14. What are 2 features of User Diagram Protocol (UDP)?
MAC
A. low overhead b. connectionless
Is a layer of specific encapsulation.
Supports error detection.

15. What are 3 properties of contention-based media access for a shared media?
Network Access
A. non-deterministic b. less overhead c. collisions exist
172.16.192.160
A. copper UTP b. optical fiber

16. Network Protocols
A. Physical b. Data Link
It does not support encryption.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

17. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Window Size
8
As the commands are entered.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

18. 2 most commonly used media types in ethernet networks
A. show startup-config b. show running-config
A. copper UTP b. optical fiber
A. Cat5 UTP b. Cat6 UTP
Network

19. How does the application layer on a server process multiple client requests for services?
It uses support from the lower layers to distinguish between connections to the service.
Next-Hop Address
A. physical layer b. DLL layer
A. decentralized resources b. resource sharing w/o a dedicated server

20. Which device is used to create or divide broadcast domains?
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
Router
255.255.255.0
It uses lasers as the light source.

21. Which characteristics describe fiber optic cable?
As the commands are entered.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Wireless

22. What are 2 commands used to view a host routing table?
A. non-deterministic b. less overhead c. collisions exist
A. netstat -r b. route PRINT
To enable a receiving host to forward the data to the appropriate application.
IP Protocol

23. Default Gateway is incorrect on the host - What is the impact on the communications?
255.255.255.224
A. purpose b. geographic location c. ownership
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
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

24. 3 features that allow TCP to realibly and accurately track the transmission of data
A. application b. services
Is used by the server to resolve names.
It provides interface between applications on either end of the network.
A. flow control b. session establishment c. numbering and sequencing

25. What is a characteristic of a logical point-to-point topology?
The MAC protocol can be very simple.
A. addressing b. error detection c. frame delimiting
Twisting of the cables
172.16.192.160

26. What characteristic of an UTP helps reduce interference?
A. show startup-config b. show running-config
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Twisting of the cables

27. What do you need to use for an initial configuration on a Cisco router?
A physical topology.
255.255.255.0
Console interface
A. the router will discard the packet b. the router will send a time exceeded message to the source host

28. What application layer protocol is used to support file transfers between client and server?
SMB
FTP
Collisions can decrease network performance.
Application Layer

29. What is the primary reason for developing IPv6?
Static
It has expanded adressing capabilities.
Next-Hop Address
It does not support encryption.

30. What statements describe the logical token-passing topology?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. application b. services
A. DB 60 b. Winchester 15-pin c. smart serial
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

31. 3 statements about the role of routers in the network
The destination host address.
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
SSH

32. When a device is moved from one network to the other...?
OTDR
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
To facilitate the entry and exit of data on media.
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

33. What information is added during encapsulation at OSI Layer 3?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Physical
Source and Destination IP address
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

34. 3 characteristics of valid Ethernet Layer 2 addresses
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
They must wait until the first hosts finish transfering the media.
The MAC protocol can be very simple.

35. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
SSH
DNS
32 bits
Supports error detection.

36. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
The address of the router that the host will use to 'get to the other side'.
Network Layer Packet
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. the router will discard the packet b. the router will send a time exceeded message to the source host

37. What info is found in the TCP and UDP header info?
Source and Destination Ports
A. decentralized resources b. resource sharing w/o a dedicated server
Host A
A default gateway (router).

38. What is the primary rope of the physical layer in transmitting data?
32 bits
A. perform degradation b. security issues c. host identification
Create signals that represent the bits in each frame for the media.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

39. What networking devices are recommended to be assigned static IP addresses?
A. servers b. routers c. network printers
A default gateway (router).
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. Cat5 UTP b. Cat6 UTP

40. What are the advantages of using a client-server model?
It provides interface between applications on either end of the network.
Network Layer Packet
A. Cat5 UTP b. Cat6 UTP
A. it has centralized administration b. security is easier to enforce

41. 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
Identify the device that allows local network computers to communicate w/ devices in other networks.
OTDR
Time-to-live (TTL)

42. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
When connecting a host to a switch.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Network Access
A. Physical b. Data Link

43. Which portion of the network layer address does a router use to forward packets?
A. flow control b. session establishment c. numbering and sequencing
Hosts return to listen-before-transmit mode.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Network portion

44. What are 2 email components used to forward mail between servers?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Application Layer
A. MTA b. SMTP

45. What method of signal transmission uses radio waves to carry signals?
Hub
A. servers b. routers c. network printers
Wireless
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

46. What are 3 pieces of info about a route contained in a routing table?
A. next-hop b. metric/interface c. destination network address
Any device whose backoff timer expires first.
Application Layer
To facilitate the entry and exit of data on media.

47. 3 functions of the upper data link sublayer in the OSI model
A. media sharing b. logical topology
Destination is not contacted before a packet is sent.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
255.255.255.0

48. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
FTP
A. next-hop b. metric/interface c. destination network address
80 (HTTP)
The MAC protocol can be very simple.

49. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
Network Layer Packet
It has expanded adressing capabilities.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
UDP

50. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Destination is not contacted before a packet is sent.
Supports error detection.
UDP