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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. Statements that describe LAN
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Application Layer
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Window Size

2. Why is flow control used for TCP data transfer?
It uses lasers as the light source.
To prevent the receiver from being overwhelmed by incoming data.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Hosts return to listen-before-transmit mode.

3. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
UTP
A. MTA b. SMTP
80 (HTTP)
Source and Destination IP address

4. There are too many broadcasts on switches - what can be done?
Static
Rollover cable
A. replace a switch w/ a router b. subnet the new networks
Twisting of the cables

5. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. they initiate data exchanges b. they may upload data to servers
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. enable mode b. priviledge executive mode
Destination Network Address

6. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
Create signals that represent the bits in each frame for the media.
IP is not properly installed
Twisting of the cables
Source Port

7. A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
SSH
172.16.192.160
Binary ANDing
80 (HTTP)

8. Which 2 options represent Layer 4 addressing?
To enable a receiving host to forward the data to the appropriate application.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
To facilitate the entry and exit of data on media.
A. goodput b. throughput c. bandwidth

9. What does the IEEE 802.2 standard represent in Ethernet technologies?
Logical Link Control sublayer
RJ-45
SSH
The MAC protocol can be very simple.

10. What is the primary function of encapsulating packets into frames?
To facilitate the entry and exit of data on media.
OTDR
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. physical layer b. DLL layer

11. What are 2 features of User Diagram Protocol (UDP)?
A. low overhead b. connectionless
UTP
To facilitate the entry and exit of data on media.
It provides interface between applications on either end of the network.

12. What is the role of MTA in handling email?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
The MAC protocol can be very simple.
Console interface
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

13. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
A. next-hop b. metric/interface c. destination network address
Network Layer Packet
A. media sharing b. logical topology
8

14. What are 2 commands used to view a host routing table?
Is a layer of specific encapsulation.
Hub
Source and Destination IP address
A. netstat -r b. route PRINT

15. What do end devices do?
Host mobility
Twisting of the cables
Originate data flow.
To prevent the receiver from being overwhelmed by incoming data.

16. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Transport
Router(config)# interface FastEthernet 0/1
Wireless
A random delay helps prevent the stations from experiencing another collision during transmission.

17. Which type of cable is most often associated w/ fiber-optic cable?
A. decentralized resources b. resource sharing w/o a dedicated server
A. purpose b. geographic location c. ownership
A backbone cable.
Binary ANDing

18. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. non-deterministic b. less overhead c. collisions exist
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. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

19. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A physical topology.
Supports error detection.

20. In a connectionless system - What is correct?
A. Physical b. Data Link
Destination is not contacted before a packet is sent.
The physical address is added.
A. show startup-config b. show running-config

21. 3 measures of data transfer
A. goodput b. throughput c. bandwidth
A. copper UTP b. optical fiber
Console interface
The packets will be delivered and reassembled at destination.

22. What is the function of the DLL?
TCP initializes the sequence numbers for the sessions.
It provides for the exchange of data over a common local media.
Source and Destination IP address
To facilitate the entry and exit of data on media.

23. 3 functions of the upper data link sublayer in the OSI model
A. decentralized resources b. resource sharing w/o a dedicated server
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. perform degradation b. security issues c. host identification
Hub

24. If there is a graphic representation of a company network wiring and equipment - What is this called?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
TCP initializes the sequence numbers for the sessions.
A physical topology.
It reduces unnecessary broadcasts.

25. What is the purpose of the TCP/IP Network Application Layer?
Network Media Control
Application Layer
A. DB 60 b. Winchester 15-pin c. smart serial
Switch

26. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
0 to 1023
FTP
A. DNS b. SMTP c. POP
Network Layer

27. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
As the commands are entered.
Is a layer of specific encapsulation.
Network address
Twisting of the cables

28. 3 features that allow TCP to realibly and accurately track the transmission of data
A. low overhead b. connectionless
A. goodput b. throughput c. bandwidth
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. flow control b. session establishment c. numbering and sequencing

29. In business LANs - which connector is used w/ twisted-pair networking cable?
RJ-45
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
A. physical layer b. DLL layer
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

30. What is an automated service that matches resource names w/ required IP addresses?
The packets will be delivered and reassembled at destination.
172.16.192.160
FTP
DNS

31. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
It uses support from the lower layers to distinguish between connections to the service.
A. next-hop b. metric/interface c. destination network address
IP Protocol
UTP

32. 3 protocols that operate in the application layer
A. DNS b. SMTP c. POP
Originate data flow.
Network Layer Packet
A. enable mode b. priviledge executive mode

33. 2 characteristics of peer-2-peer
0 to 1023
Application Layer
32 bits
A. decentralized resources b. resource sharing w/o a dedicated server

34. An admin needs to keep contents private - which access method should he use?
255.255.255.0
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. next-hop b. metric/interface c. destination network address
SSH

35. What are 3 properties of contention-based media access for a shared media?
IP is not properly installed
RJ-45
A. non-deterministic b. less overhead c. collisions exist
Is a layer of specific encapsulation.

36. What are 2 email components used to forward mail between servers?
A. MTA b. SMTP
A default gateway (router).
A. next-hop b. metric/interface c. destination network address
A. it has centralized administration b. security is easier to enforce

37. What is the purpose of resource records in DNS?
255.255.255.224
Transport
It reduces unnecessary broadcasts.
Is used by the server to resolve names.

38. What is a default gateway address?

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39. What is a characteristic of a single-mode fiber-optic cable?
A. perform degradation b. security issues c. host identification
MAC
A. DB 60 b. Winchester 15-pin c. smart serial
It uses lasers as the light source.

40. 2 most commonly used media types in ethernet networks
A. copper UTP b. optical fiber
Window Size
A. physical layer b. DLL layer
Network

41. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
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
Fiber
Signal loss can be experienced.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

42. What is dinamically selected by the source host when forwarding data?
Source Port
The address of the router that the host will use to 'get to the other side'.
When connecting a host to a switch.
UDP

43. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Switch
Minimal delays in data delivery.
Binary ANDing
A. goodput b. throughput c. bandwidth

44. 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. flow control b. session establishment c. numbering and sequencing
A physical topology.
DNS
2046

45. Where is the IOS file stored at?
Flash
Network Layer Packet
When connecting a host to a switch.
Console

46. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
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
MAC
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

47. What are 3 pieces of info about a route contained in a routing table?
No collisions will occur on this link.
A. media sharing b. logical topology
A. next-hop b. metric/interface c. destination network address
SSH

48. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
Binary ANDing
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Physical

49. What device can check for faults - integrity and performance of media?
OTDR
Physical
A. copper UTP b. optical fiber
A default gateway (router).

50. What command is used to change the default name to 'Costas'?
Router(config)# hostname Costas
When connecting a host to a switch.
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