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. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
Originate data flow.
A random delay helps prevent the stations from experiencing another collision during transmission.
Console
A physical topology.

2. What are 2 forms of application layer software?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
They must wait until the first hosts finish transfering the media.
It has expanded adressing capabilities.
A. application b. services

3. What do end devices do?
A. netstat -r b. route PRINT
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Originate data flow.
A. HTTP b. HTTPS

4. 3 common problems w/ a large network
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
A. performance degradation b. security issues c. host identification
A. copper UTP b. optical fiber
Network address

5. If there is a graphic representation of a company network wiring and equipment - What is this called?
The physical address is added.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A physical topology.
UTP

6. statements of IP adressing
A. show startup-config b. show running-config
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
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
A. they initiate data exchanges b. they may upload data to servers

7. 2 characteristics of clients in data networks
Fiber
A. they initiate data exchanges b. they may upload data to servers
A. show startup-config b. show running-config
Resolve IPv4 addresses to MAC addresses.

8. What is a component of a routing table entry?
It does not support encryption.
A. HTTP b. HTTPS
Next-Hop Address
They must wait until the first hosts finish transfering the media.

9. What is a benefit of a WAN?
A. servers b. routers c. network printers
Host mobility
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
Is a layer of specific encapsulation.

10. What are 2 protocols for transfering web resources?
A. HTTP b. HTTPS
Network Layer
80 (HTTP)
To facilitate the entry and exit of data on media.

11. Default Gateway is incorrect on the host - What is the impact on the communications?
A. MTA b. SMTP
Network
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. media sharing b. logical topology

12. What does the IEEE 802.2 standard represent in Ethernet technologies?
Is used by the server to resolve names.
IP Protocol
It uses support from the lower layers to distinguish between connections to the service.
Logical Link Control sublayer

13. During a TCP session - if packets arrive out of order - what will happen?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. copper UTP b. optical fiber
The packets will be delivered and reassembled at destination.

14. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
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
SMB
A. physical layer b. DLL layer
Network Layer

15. Which layer supplies services and allows user interface?
Application Layer
Originate data flow.
A. HTTP b. HTTPS
It reduces unnecessary broadcasts.

16. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
When connecting a host to a switch.
It reduces unnecessary broadcasts.
Supports error detection.
A. show startup-config b. show running-config

17. What type of routing uses information that is manually entered into the routing table?
RJ-45
Static
Source and Destination Ports
A. they initiate data exchanges b. they may upload data to servers

18. How many bits make up an IPv4 address?
172.16.192.160
Is a layer of specific encapsulation.
Resolve IPv4 addresses to MAC addresses.
32 bits

19. What are the advantages of using a client-server model?
A. it has centralized administration b. security is easier to enforce
Source Port
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. purpose b. geographic location c. ownership

20. Why is flow control used for TCP data transfer?
Is used by the server to resolve names.
To prevent the receiver from being overwhelmed by incoming data.
Application Layer
A. application b. services

21. 3 characteristics of valid Ethernet Layer 2 addresses
Router(config)# interface FastEthernet 0/1
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. it has centralized administration b. security is easier to enforce
255.255.255.0

22. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. decentralized resources b. resource sharing w/o a dedicated server
Show Interfaces
Logical Link Control sublayer

23. What is the purpose of the preamble in an ethernet frame?
A. they initiate data exchanges b. they may upload data to servers
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
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
255.255.255.224

24. What command is used to change the default name to 'Costas'?
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
To prevent the receiver from being overwhelmed by incoming data.
Router(config)# hostname Costas
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

25. What are key considering factors when grouping hosts into common networks?
IP Protocol
Source and Destination Ports
Supports error detection.
A. purpose b. geographic location c. ownership

26. When a network service fails - which port is most often used to access a router for management purposes?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Console
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. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

27. Which device is used to create or divide broadcast domains?
Router
A. application b. services
A. performance degradation b. security issues c. host identification
Network Layer Packet

28. 3 factors that should be considered when implementing Layer 2 protocols
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
Any device whose backoff timer expires first.
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. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

29. What statements describe the logical token-passing topology?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Hosts return to listen-before-transmit mode.
A. servers b. routers c. network printers
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

30. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Router
Network address
The magnetic field around the adjacent pairs of wire.
Wireless

31. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
255.255.255.224
0 to 1023
Static
A. the router will discard the packet b. the router will send a time exceeded message to the source host

32. What is a default gateway address?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

33. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
Application Layer
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Hosts return to listen-before-transmit mode.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

34. What makes fiber preferable to copper for interconnecting buildings?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
8
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
SSH

35. There are too many broadcasts on switches - what can be done?
2046
Hub
A. replace a switch w/ a router b. subnet the new networks
A. media sharing b. logical topology

36. At which layers of the OSI model does ethernet operate?
Twisting of the cables
The magnetic field around the adjacent pairs of wire.
A. physical layer b. DLL layer
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

37. Statements that describe LAN
8
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. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. not affected by EMI of RFI b. most expensive type of LAN cabling

38. What is the primary purpose of ARP?
UDP
A. goodput b. throughput c. bandwidth
Switch
Resolve IPv4 addresses to MAC addresses.

39. 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?
It provides for the exchange of data over a common local media.
Next-Hop Address
Console
Host A

40. What device can check for faults - integrity and performance of media?
OTDR
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. application b. presentation c. session d. transmision e. network f. data link g. physical
The MAC protocol can be very simple.

41. What are 2 email components used to forward mail between servers?
Is used by the server to resolve names.
Router(config)# hostname Costas
A. MTA b. SMTP
A. Physical b. Data Link

42. When is a straight-through cable used in a network?
Flash
32 bits
When connecting a host to a switch.
Logical Link Control sublayer

43. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
TCP initializes the sequence numbers for the sessions.
Switch
OTDR
Fiber

44. What method of signal transmission uses radio waves to carry signals?
Console interface
Wireless
Binary ANDing
IP is not properly installed

45. What can be a problem that is reduced by adding end-to-end addressing?
A. goodput b. throughput c. bandwidth
It reduces unnecessary broadcasts.
172.16.192.160
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

46. What is the role of MTA in handling email?
Source and Destination IP address
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. non-deterministic b. less overhead c. collisions exist
To enable a receiving host to forward the data to the appropriate application.

47. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Fiber
It provides interface between applications on either end of the network.
The address of the router that the host will use to 'get to the other side'.
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

48. In business LANs - which connector is used w/ twisted-pair networking cable?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
RJ-45
255.255.255.224
To enable a receiving host to forward the data to the appropriate application.

49. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
0 to 1023
A. larger address space b. data types and classes of service c. authentication and encryption
A. next-hop b. metric/interface c. destination network address
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

50. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
Time-to-live (TTL)
Window Size
A. it has centralized administration b. security is easier to enforce
Destination Network Address