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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. What is dinamically selected by the source host when forwarding data?
To facilitate the entry and exit of data on media.
Source Port
A. non-deterministic b. less overhead c. collisions exist
Application Layer

2. There are too many broadcasts on switches - what can be done?
A. replace a switch w/ a router b. subnet the new networks
A. addressing b. error detection c. frame delimiting
UTP
A. larger address space b. data types and classes of service c. authentication and encryption

3. What are 2 protocols for transfering web resources?
255.255.255.0
Signal loss can be experienced.
A. HTTP b. HTTPS
Show Interfaces

4. At which layer of the TCP/IP model does ethernet operate?
It does not support encryption.
Network Access
Ctrl + Shift + 6
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

5. 2 most commonly used media types in ethernet networks
FTP
Network Layer Packet
A. copper UTP b. optical fiber
Next-Hop Address

6. When destination network is not in the routing table - What are 2 actions the router might take?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Show Interfaces
A. application b. services
A. DB 60 b. Winchester 15-pin c. smart serial

7. 3 factors that should be considered when implementing Layer 2 protocols
DNS
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
They must wait until the first hosts finish transfering the media.

8. What correctly describes a MAC address?
A. show startup-config b. show running-config
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. HTTP b. HTTPS
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

9. 3 features of IPv6
Console interface
It does not support encryption.
A. larger address space b. data types and classes of service c. authentication and encryption
A. minimizing of collisions b. division into broadcast domains

10. What type of network cable is used between a terminal and a console port?
A. physical layer b. DLL layer
Source and Destination Ports
Rollover cable
255.255.255.0

11. What are 2 email components used to forward mail between servers?
A. media sharing b. logical topology
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
As the commands are entered.
A. MTA b. SMTP

12. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
When connecting a host to a switch.
A. physical layer b. DLL layer
Fiber
Hub

13. 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)
A. application b. presentation c. session d. transmision e. network f. data link g. physical
The destination host address.
Fiber

14. What information is added during encapsulation at OSI Layer 3?
Source and Destination IP address
32 bits
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Twisting of the cables

15. Which portion of the network layer address does a router use to forward packets?
Signal loss can be experienced.
A. show startup-config b. show running-config
Console interface
Network portion

16. What is a disadvantage of Telnet?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. next-hop b. metric/interface c. destination network address
Rollover cable
It does not support encryption.

17. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
IP is not properly installed
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Network Layer Packet
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

18. 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?
They must wait until the first hosts finish transfering the media.
IP is not properly installed
Host A
UTP

19. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Rollover cable
Hosts return to listen-before-transmit mode.
A. copper UTP b. optical fiber

20. What is the role of the OSI Application Layer?
A. larger address space b. data types and classes of service c. authentication and encryption
It provides interface between applications on either end of the network.
Network Layer Packet
A. replace a switch w/ a router b. subnet the new networks

21. If you have a full-duplex operational network - what can happen?
OTDR
No collisions will occur on this link.
Source and Destination IP address
A. low overhead b. connectionless

22. 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.
Window Size
A. Physical b. Data Link
A. enable mode b. priviledge executive mode

23. What are 3 common problems w/ large networks?
A. perform degradation b. security issues c. host identification
A. goodput b. throughput c. bandwidth
Network portion
Is a layer of specific encapsulation.

24. What is the purpose of the preamble in an ethernet frame?
A. low overhead b. connectionless
FTP
Any device whose backoff timer expires first.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

25. What do end devices do?
Originate data flow.
The destination host address.
Show Interfaces
A physical topology.

26. 3 statements about routes and their use
RJ-45
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

27. During a TCP session - if packets arrive out of order - what will happen?
A. goodput b. throughput c. bandwidth
A. servers b. routers c. network printers
The packets will be delivered and reassembled at destination.
Transport

28. 3 statements about the role of routers in the network
A. media sharing b. logical topology
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
The destination host address.
Router

29. What statements describe the logical token-passing topology?
Resolve IPv4 addresses to MAC addresses.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
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

30. When is a straight-through cable used in a network?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
It reduces unnecessary broadcasts.
A. they initiate data exchanges b. they may upload data to servers
When connecting a host to a switch.

31. When a network service fails - which port is most often used to access a router for management purposes?
Console
A. next-hop b. metric/interface c. destination network address
A. copper UTP b. optical fiber
To enable a receiving host to forward the data to the appropriate application.

32. What is an effect of improperly applying a network cable connector?
Signal loss can be experienced.
Host mobility
Network
Router(config)# interface FastEthernet 0/1

33. 2 features that make switches preferable to hubs
Is used by the server to resolve names.
Create signals that represent the bits in each frame for the media.
Network Media Control
A. minimizing of collisions b. division into broadcast domains

34. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
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
Host A
Signal loss can be experienced.
0 to 1023

35. Which layer supplies services and allows user interface?
Application Layer
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. addressing b. error detection c. frame delimiting
Flash

36. Why is flow control used for TCP data transfer?
To prevent the receiver from being overwhelmed by incoming data.
A. enable mode b. priviledge executive mode
Is used by the server to resolve names.
Ctrl + Shift + 6

37. If you have a small network w/ 3 computers...
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
Create signals that represent the bits in each frame for the media.
Logical Link Control sublayer
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

38. What is the role of MTA in handling email?
Binary ANDing
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Console

39. What type of routing uses information that is manually entered into the routing table?
It provides interface between applications on either end of the network.
Static
A. MTA b. SMTP
Window Size

40. 3 measures of data transfer
No collisions will occur on this link.
A. Physical b. Data Link
A. goodput b. throughput c. bandwidth
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

41. During encapsulation - what happens in the Data Link Layer?
Network Access
Logical Link Control sublayer
The physical address is added.
Destination Network Address

42. An admin needs to keep contents private - which access method should he use?
Identify the device that allows local network computers to communicate w/ devices in other networks.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
SSH
A. HTTP b. HTTPS

43. Intermediary devices used to implement security between networks
Router(config)# interface FastEthernet 0/1
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. router b. firewall
SMB

44. What 2 type of cables would most commonly be used for new runs?
Ctrl + Shift + 6
A. Cat5 UTP b. Cat6 UTP
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. goodput b. throughput c. bandwidth

45. What application layer protocol is used to support file transfers between client and server?
A. minimizing of collisions b. division into broadcast domains
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
FTP
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

46. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
UTP
Is used by the server to resolve names.
Destination Network Address
The packets will be delivered and reassembled at destination.

47. What describes the purpose of default route?
A. purpose b. geographic location c. ownership
Minimal delays in data delivery.
Hosts return to listen-before-transmit mode.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

48. What is an automated service that matches resource names w/ required IP addresses?
A. Physical b. Data Link
Logical Link Control sublayer
DNS
A. identifies the communicating applications b. identifies multiple conversations between the hosts

49. What layer encapsulates segments into packets?
A. performance degradation b. security issues c. host identification
A. addressing b. error detection c. frame delimiting
Network Layer
Binary ANDing

50. 3 terms that define the forms of help available within the Cisco IOS
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
32 bits
A. decentralized resources b. resource sharing w/o a dedicated server
A. hot keys b. context-sensitive c. command syntax check