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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. When is a straight-through cable used in a network?
When connecting a host to a switch.
It uses lasers as the light source.
A. low overhead b. connectionless
A. enable mode b. priviledge executive mode

2. Which device is used to create or divide broadcast domains?
Static
Router
IP Protocol
Rollover cable

3. 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. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. perform degradation b. security issues c. host identification

4. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
Twisting of the cables
FTP
The destination host address.
SMB

5. What networking devices are recommended to be assigned static IP addresses?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Transport
A. servers b. routers c. network printers
FTP

6. When a network service fails - which port is most often used to access a router for management purposes?
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
Create signals that represent the bits in each frame for the media.
Console
A. larger address space b. data types and classes of service c. authentication and encryption

7. Statements that describe LAN
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
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
Identify processes or services that are communicating with end devices.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

8. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
Is used by the server to resolve names.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. DB 60 b. Winchester 15-pin c. smart serial
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

9. 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?
IP Protocol
2046
A. router b. firewall
A. servers b. routers c. network printers

10. 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
Router(config)# hostname Costas
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
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

11. What information is added during encapsulation at OSI Layer 3?
Logical Link Control sublayer
A. larger address space b. data types and classes of service c. authentication and encryption
A. media sharing b. logical topology
Source and Destination IP address

12. What is an automated service that matches resource names w/ required IP addresses?
Destination Network Address
0 to 1023
DNS
Identify the device that allows local network computers to communicate w/ devices in other networks.

13. What is a default gateway address?

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14. What is the purpose of the preamble in an ethernet frame?
Show Interfaces
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Static
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

15. What is the purpose of a default gateway?
Identify the device that allows local network computers to communicate w/ devices in other networks.
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
Resolve IPv4 addresses to MAC addresses.
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

16. Which characteristics describe fiber optic cable?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. they initiate data exchanges b. they may upload data to servers
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

17. 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?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. replace a switch w/ a router b. subnet the new networks
RJ-45
Host A

18. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
A. show startup-config b. show running-config
A. application b. services
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Switch

19. At which layer of the TCP/IP model does ethernet operate?
It provides interface between applications on either end of the network.
Network Access
Destination Network Address
A. Cat5 UTP b. Cat6 UTP

20. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
Hosts return to listen-before-transmit mode.
Router
Show Interfaces
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. Where is the IOS file stored at?
Minimal delays in data delivery.
A. show startup-config b. show running-config
Network portion
Flash

22. 3 factors that should be considered when implementing Layer 2 protocols
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Create signals that represent the bits in each frame for the media.
FTP
8

23. 3 functions of the upper data link sublayer in the OSI model
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
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. HTTP b. HTTPS
Logical Link Control sublayer

24. What are 2 email components used to forward mail between servers?
A. MTA b. SMTP
Identify processes or services that are communicating with end devices.
Host A
A random delay helps prevent the stations from experiencing another collision during transmission.

25. What 2 type of cables would most commonly be used for new runs?
RJ-45
Static
Rollover cable
A. Cat5 UTP b. Cat6 UTP

26. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
To prevent the receiver from being overwhelmed by incoming data.
Destination Network Address
Network Layer Packet
Router

27. Important characteristic of UDP
Minimal delays in data delivery.
Originate data flow.
A. HTTP b. HTTPS
A. media sharing b. logical topology

28. What command is used to change the default name to 'Costas'?
2046
Router(config)# hostname Costas
Ctrl + Shift + 6
A. media sharing b. logical topology

29. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
When connecting a host to a switch.
It provides for the exchange of data over a common local media.
UDP
Binary ANDing

30. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
Identify the device that allows local network computers to communicate w/ devices in other networks.
255.255.255.224
IP is not properly installed
It has expanded adressing capabilities.

31. What is a characteristic of a logical point-to-point topology?
The MAC protocol can be very simple.
IP is not properly installed
It uses support from the lower layers to distinguish between connections to the service.
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

32. In business LANs - which connector is used w/ twisted-pair networking cable?
It uses lasers as the light source.
FTP
RJ-45
SMB

33. During a TCP session - if packets arrive out of order - what will happen?
As the commands are entered.
Switch
Flash
The packets will be delivered and reassembled at destination.

34. 3 protocols that operate in the application layer
Fiber
A. purpose b. geographic location c. ownership
A. DNS b. SMTP c. POP
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

35. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Transport
To prevent the receiver from being overwhelmed by incoming data.
A random delay helps prevent the stations from experiencing another collision during transmission.
A. enable mode b. priviledge executive mode

36. What is the primary reason for developing IPv6?
Network address
It has expanded adressing capabilities.
A. goodput b. throughput c. bandwidth
The packets will be delivered and reassembled at destination.

37. Which layer supplies services and allows user interface?
MAC
Application Layer
DNS
A. low overhead b. connectionless

38. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
Physical
Create signals that represent the bits in each frame for the media.
The MAC protocol can be very simple.
It uses lasers as the light source.

39. What type of routing uses information that is manually entered into the routing table?
Static
Window Size
8
Console

40. When a device is moved from one network to the other...?
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
It provides for the exchange of data over a common local media.
Router(config)# hostname Costas
Rollover cable

41. How many bits make up an IPv4 address?
32 bits
Host A
Minimal delays in data delivery.
Router

42. What can be a problem that is reduced by adding end-to-end addressing?
It reduces unnecessary broadcasts.
Network Layer
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. HTTP b. HTTPS

43. What is a drawback of the CSMA/CD access method?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Collisions can decrease network performance.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. larger address space b. data types and classes of service c. authentication and encryption

44. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
A. physical layer b. DLL layer
To enable a receiving host to forward the data to the appropriate application.
A. application b. services
Destination Network Address

45. If you have a PC - 3 routers and a Laptop... How many unique CRC calculation will take place as traffic routes from the PC to the Laptop?
A. Physical b. Data Link
The physical address is added.
Fiber
8

46. At which layers of the OSI model does ethernet operate?
Static
The MAC protocol can be very simple.
A. physical layer b. DLL layer
A. show startup-config b. show running-config

47. What determines the method of media access control?
Console interface
A. minimizing of collisions b. division into broadcast domains
A. media sharing b. logical topology
A random delay helps prevent the stations from experiencing another collision during transmission.

48. 3 features that allow TCP to realibly and accurately track the transmission of data
A. flow control b. session establishment c. numbering and sequencing
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. DNS b. SMTP c. POP

49. What does the IEEE 802.2 standard represent in Ethernet technologies?
Identify processes or services that are communicating with end devices.
A. Cat5 UTP b. Cat6 UTP
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
Logical Link Control sublayer

50. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
2046
255.255.255.224
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. router b. firewall