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. What do you need to use for an initial configuration on a Cisco router?
Console interface
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. physical layer b. DLL layer
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

2. Which 2 options represent Layer 4 addressing?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
172.16.192.160
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Transport

3. 2 characteristics of peer-2-peer
A. decentralized resources b. resource sharing w/o a dedicated server
The magnetic field around the adjacent pairs of wire.
Binary ANDing
A. router b. firewall

4. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Identify processes or services that are communicating with end devices.
Fiber
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

5. When a device is moved from one network to the other...?
A. non-deterministic b. less overhead c. collisions exist
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. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
80 (HTTP)

6. 3 protocols that operate in the application layer
A. hot keys b. context-sensitive c. command syntax check
DNS
255.255.255.0
A. DNS b. SMTP c. POP

7. 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)
Originate data flow.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. HTTP b. HTTPS

8. What are 2 common characteristics associated w/ dynamic routing protocols?
Router(config)# hostname Costas
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
They must wait until the first hosts finish transfering the media.
Network address

9. What is dinamically selected by the source host when forwarding data?
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
Source Port
IP is not properly installed
Network portion

10. There are too many broadcasts on switches - what can be done?
FTP
As the commands are entered.
A. replace a switch w/ a router b. subnet the new networks
It provides for the exchange of data over a common local media.

11. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Time-to-live (TTL)
Any device whose backoff timer expires first.
Identify processes or services that are communicating with end devices.
Binary ANDing

12. In a connectionless system - What is correct?
Destination is not contacted before a packet is sent.
A. DB 60 b. Winchester 15-pin c. smart serial
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
FTP

13. What is the proper order of the OSI Layers?
MAC
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. DNS b. SMTP c. POP
Window Size

14. At which layers of the OSI model does ethernet operate?
A. physical layer b. DLL layer
Next-Hop Address
Router(config)# interface FastEthernet 0/1
SMB

15. When is a straight-through cable used in a network?
IP is not properly installed
When connecting a host to a switch.
A. application b. services
The destination host address.

16. What is a drawback of the CSMA/CD access method?
Collisions can decrease network performance.
A. flow control b. session establishment c. numbering and sequencing
Resolve IPv4 addresses to MAC addresses.
The physical address is added.

17. 3 primary functions of the data link layer encapsulation
Rollover cable
Hub
A. addressing b. error detection c. frame delimiting
A. media sharing b. logical topology

18. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

19. What describes the purpose of default route?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
To facilitate the entry and exit of data on media.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
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

20. 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
It provides for the exchange of data over a common local media.
Console interface

21. 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.
It does not support encryption.
A. the router will discard the packet b. the router will send a time exceeded message to the source host
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

22. What is the role of the OSI Application Layer?
A. next-hop b. metric/interface c. destination network address
A random delay helps prevent the stations from experiencing another collision during transmission.
It provides interface between applications on either end of the network.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

23. 3 measures of data transfer
A. goodput b. throughput c. bandwidth
Router(config)# interface FastEthernet 0/1
A. decentralized resources b. resource sharing w/o a dedicated server
A. copper UTP b. optical fiber

24. Intermediary devices used to implement security between networks
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. router b. firewall
Network Access
Router

25. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
A. media sharing b. logical topology
Source and Destination Ports
Window Size
Originate data flow.

26. What is a characteristic of a single-mode fiber-optic cable?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
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. next-hop b. metric/interface c. destination network address
It uses lasers as the light source.

27. If you have a full-duplex operational network - what can happen?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
UDP
A. non-deterministic b. less overhead c. collisions exist
No collisions will occur on this link.

28. Which IP packet field will prevent endless loops?
Destination Network Address
Time-to-live (TTL)
Transport
To enable a receiving host to forward the data to the appropriate application.

29. What is a protocol that provides connectionless network layer services?
Source Port
A. servers b. routers c. network printers
IP Protocol
Collisions can decrease network performance.

30. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
Transport
A. copper UTP b. optical fiber
A. perform degradation b. security issues c. host identification
UTP

31. 2 characteristics of clients in data networks
Originate data flow.
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
A. servers b. routers c. network printers

32. What command is used to change the default name to 'Costas'?
Router(config)# hostname Costas
A. media sharing b. logical topology
A. MTA b. SMTP
Identify processes or services that are communicating with end devices.

33. What characteristic of an UTP helps reduce interference?
Router
Twisting of the cables
It reduces unnecessary broadcasts.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

34. 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?
2046
A. minimizing of collisions b. division into broadcast domains
A. show startup-config b. show running-config
The physical address is added.

35. 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
The physical address is added.
Host A
Rollover cable

36. When do changes take effect in a Cisco router?
Signal loss can be experienced.
A. they initiate data exchanges b. they may upload data to servers
As the commands are entered.
Network

37. What info is found in the TCP and UDP header info?
A. perform degradation b. security issues c. host identification
Static
Source and Destination Ports
Destination is not contacted before a packet is sent.

38. What is an effect of improperly applying a network cable connector?
To enable a receiving host to forward the data to the appropriate application.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
TCP initializes the sequence numbers for the sessions.
Signal loss can be experienced.

39. What is the purpose of the preamble in an ethernet frame?
Destination Network Address
Source and Destination Ports
The MAC protocol can be very simple.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

40. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
A. goodput b. throughput c. bandwidth
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
0 to 1023
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

41. What is the purpose of a default gateway?
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
Identify the device that allows local network computers to communicate w/ devices in other networks.
A physical topology.
255.255.255.0

42. 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. application b. presentation c. session d. transmision e. network f. data link g. physical
When connecting a host to a switch.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
8

43. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Binary ANDing
Hub
2046
Resolve IPv4 addresses to MAC addresses.

44. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
Twisting of the cables
No collisions will occur on this link.
SMB
Host A

45. What do end devices do?
Originate data flow.
A. media sharing b. logical topology
It provides interface between applications on either end of the network.
Switch

46. What are 2 features of User Diagram Protocol (UDP)?
TCP initializes the sequence numbers for the sessions.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. low overhead b. connectionless
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

47. 3 features that allow TCP to realibly and accurately track the transmission of data
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. flow control b. session establishment c. numbering and sequencing
As the commands are entered.
A. it has centralized administration b. security is easier to enforce

48. What layer encapsulates segments into packets?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Network Layer
Signal loss can be experienced.
Time-to-live (TTL)

49. What is a characteristic of a logical point-to-point topology?
DNS
Flash
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
The MAC protocol can be very simple.

50. 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?
Network Access
A. DB 60 b. Winchester 15-pin c. smart serial
They must wait until the first hosts finish transfering the media.
Network portion