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 can be a problem that is reduced by adding end-to-end addressing?
UDP
It reduces unnecessary broadcasts.
To facilitate the entry and exit of data on media.
A. identifies the communicating applications b. identifies multiple conversations between the hosts

2. What is an effect of improperly applying a network cable connector?
Router(config)# interface FastEthernet 0/1
Signal loss can be experienced.
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
RJ-45

3. What is the function of the DLL?
Network Layer Packet
The address of the router that the host will use to 'get to the other side'.
It provides for the exchange of data over a common local media.
The destination host address.

4. What are the advantages of using a client-server model?
Originate data flow.
Rollover cable
Time-to-live (TTL)
A. it has centralized administration b. security is easier to enforce

5. 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.
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
It reduces unnecessary broadcasts.
A. purpose b. geographic location c. ownership

6. If there is a graphic representation of a company network wiring and equipment - What is this called?
Collisions can decrease network performance.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. DNS b. SMTP c. POP
A physical topology.

7. After an ethernet collision - which device has priority to transmit data?
It provides for the exchange of data over a common local media.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Any device whose backoff timer expires first.
Host mobility

8. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Flash
A. servers b. routers c. network printers
Hub
Identify the device that allows local network computers to communicate w/ devices in other networks.

9. After a routers ends its boot sequence - the admin wants to check the routers config. From the EXEC mode - which commands can the admin use?
Logical Link Control sublayer
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Network portion
A. show startup-config b. show running-config

10. What info is found in the TCP and UDP header info?
Source and Destination Ports
A. physical layer b. DLL layer
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. replace a switch w/ a router b. subnet the new networks

11. What can you identify when you examine the Network Layer header?
Network Layer Packet
When connecting a host to a switch.
The destination host address.
IP Protocol

12. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
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
Physical
It uses lasers as the light source.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

13. What describes the purpose of default route?
It provides for the exchange of data over a common local media.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
32 bits
Host mobility

14. 3 characteristics of valid Ethernet Layer 2 addresses
A. hot keys b. context-sensitive c. command syntax check
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. flow control b. session establishment c. numbering and sequencing
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

15. What are 2 common characteristics associated w/ dynamic routing protocols?
Is used by the server to resolve names.
Create signals that represent the bits in each frame for the media.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

16. 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
Network address
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
UDP

17. What device can check for faults - integrity and performance of media?
OTDR
Source and Destination Ports
A. servers b. routers c. network printers
Is a layer of specific encapsulation.

18. What is a characteristic of a logical point-to-point topology?
A. next-hop b. metric/interface c. destination network address
A physical topology.
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
The MAC protocol can be very simple.

19. 2 functions of encapsulation
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Source Port
As the commands are entered.
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 does the IEEE 802.2 standard represent in Ethernet technologies?
A random delay helps prevent the stations from experiencing another collision during transmission.
Rollover cable
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Logical Link Control sublayer

21. Which portion of the network layer address does a router use to forward packets?
A. HTTP b. HTTPS
A. flow control b. session establishment c. numbering and sequencing
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Network portion

22. What is the role of MTA in handling email?
Time-to-live (TTL)
A. copper UTP b. optical fiber
Static
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

23. 3 common problems w/ a large network
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
A. performance degradation b. security issues c. host identification
255.255.255.0
Signal loss can be experienced.

24. In a connectionless system - What is correct?
A. DB 60 b. Winchester 15-pin c. smart serial
Destination is not contacted before a packet is sent.
It provides interface between applications on either end of the network.
Network

25. Which device is used to create or divide broadcast domains?
The MAC protocol can be very simple.
A. low overhead b. connectionless
Router
Hosts return to listen-before-transmit mode.

26. When a network service fails - which port is most often used to access a router for management purposes?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Console
A. enable mode b. priviledge executive mode
Host mobility

27. 3 statements about routes and their use
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Network Layer Packet
It has expanded adressing capabilities.
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

28. What do you need to use for an initial configuration on a Cisco router?
Console interface
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Create signals that represent the bits in each frame for the media.
Network Media Control

29. When destination network is not in the routing table - What are 2 actions the router might take?
A. non-deterministic b. less overhead c. collisions exist
Hub
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Collisions can decrease network performance.

30. What determines the method of media access control?
It uses support from the lower layers to distinguish between connections to the service.
A. media sharing b. logical topology
A. goodput b. throughput c. bandwidth
A. hot keys b. context-sensitive c. command syntax check

31. What do the intermediary devices in the network do?
Console interface
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
FTP
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

32. What is the primary purpose of ARP?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Application Layer
Resolve IPv4 addresses to MAC addresses.
A. copper UTP b. optical fiber

33. What kind of problems are caused by excessive broadcast traffic on network segments?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
The physical address is added.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

34. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Is used by the server to resolve names.
A. larger address space b. data types and classes of service c. authentication and encryption
IP is not properly installed

35. If you have a full-duplex operational network - what can happen?
Next-Hop Address
No collisions will occur on this link.
Hub
Source and Destination IP address

36. Which 2 options represent Layer 4 addressing?
A. low overhead b. connectionless
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
RJ-45

37. Default Gateway is incorrect on the host - What is the impact on the communications?
Network Layer Packet
A. non-deterministic b. less overhead c. collisions exist
A. minimizing of collisions b. division into broadcast domains
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

38. What are 2 features of User Diagram Protocol (UDP)?
It reduces unnecessary broadcasts.
A. low overhead b. connectionless
A. non-deterministic b. less overhead c. collisions exist
To facilitate the entry and exit of data on media.

39. 2 most commonly used media types in ethernet networks
A. copper UTP b. optical fiber
SMB
TCP initializes the sequence numbers for the sessions.
RJ-45

40. 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 default gateway (router).
It does not support encryption.
2046
A. replace a switch w/ a router b. subnet the new networks

41. What type of network cable is used between a terminal and a console port?
To facilitate the entry and exit of data on media.
Rollover cable
Wireless
A. perform degradation b. security issues c. host identification

42. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
Originate data flow.
A. low overhead b. connectionless
UDP
Create signals that represent the bits in each frame for the media.

43. 3 factors that should be considered when implementing Layer 2 protocols
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. Cat5 UTP b. Cat6 UTP
Network Media Control
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

44. What makes fiber preferable to copper for interconnecting buildings?
TCP initializes the sequence numbers for the sessions.
To enable a receiving host to forward the data to the appropriate application.
Static
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

45. What is the primary rope of the physical layer in transmitting data?
No collisions will occur on this link.
Create signals that represent the bits in each frame for the media.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
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

46. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
Hub
Destination Network Address
It provides for the exchange of data over a common local media.
A. show startup-config b. show running-config

47. What 2 type of cables would most commonly be used for new runs?
A. Cat5 UTP b. Cat6 UTP
A. DB 60 b. Winchester 15-pin c. smart serial
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
It uses support from the lower layers to distinguish between connections to the service.

48. To make a console connection from a comp to a Cisco router - what cable should be used?
IP Protocol
Rollover cable
Resolve IPv4 addresses to MAC addresses.
A. hot keys b. context-sensitive c. command syntax check

49. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
A. physical layer b. DLL layer
To facilitate the entry and exit of data on media.
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
Binary ANDing

50. During a TCP session - if packets arrive out of order - what will happen?
A. Physical b. Data Link
The packets will be delivered and reassembled at destination.
A. DB 60 b. Winchester 15-pin c. smart serial
Rollover cable