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CCNA - 2

Instructions:

Answer 50 questions in 15 minutes.
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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 makes fiber preferable to copper for interconnecting buildings?
A. next-hop b. metric/interface c. destination network address
A. performance degradation b. security issues c. host identification
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Minimal delays in data delivery.

2. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
A. netstat -r b. route PRINT
Hub
A. DB 60 b. Winchester 15-pin c. smart serial
Any device whose backoff timer expires first.

3. 2 features that make switches preferable to hubs
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. minimizing of collisions b. division into broadcast domains
A. HTTP b. HTTPS
A. larger address space b. data types and classes of service c. authentication and encryption

4. When destination network is not in the routing table - What are 2 actions the router might take?
Host A
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
TCP initializes the sequence numbers for the sessions.
To facilitate the entry and exit of data on media.

5. What is the purpose of a default gateway?
Identify the device that allows local network computers to communicate w/ devices in other networks.
Fiber
Logical Link Control sublayer
The packets will be delivered and reassembled at destination.

6. What is the purpose of the TCP/IP Network Application Layer?
A. addressing b. error detection c. frame delimiting
Network Media Control
Identify processes or services that are communicating with end devices.
The packets will be delivered and reassembled at destination.

7. What is the function of the DLL?
It provides for the exchange of data over a common local media.
Supports error detection.
A. netstat -r b. route PRINT
A. application b. services

8. During encapsulation - what happens in the Data Link Layer?
The physical address is added.
8
Network Media Control
A. servers b. routers c. network printers

9. What is the proper order of the OSI Layers?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Show Interfaces
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Any device whose backoff timer expires first.

10. Which type of cable is most often associated w/ fiber-optic cable?
SMB
A backbone cable.
A. Cat5 UTP b. Cat6 UTP
Hub

11. What can you identify when you examine the Network Layer header?
The destination host address.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. not affected by EMI of RFI b. most expensive type of LAN cabling
172.16.192.160

12. 3 facts about the network portion of an IPv4 address
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A default gateway (router).
A. HTTP b. HTTPS

13. What method of signal transmission uses radio waves to carry signals?
A. decentralized resources b. resource sharing w/o a dedicated server
The physical address is added.
Wireless
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

14. What application layer protocol is used to support file transfers between client and server?
To prevent the receiver from being overwhelmed by incoming data.
A. DB 60 b. Winchester 15-pin c. smart serial
A. it has centralized administration b. security is easier to enforce
FTP

15. What info is found in the TCP and UDP header 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
UTP
Source and Destination Ports
The packets will be delivered and reassembled at destination.

16. Network Protocols
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Is a layer of specific encapsulation.
Source Port

17. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. replace a switch w/ a router b. subnet the new networks
SMB
Router

18. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Fiber
Twisting of the cables
A. goodput b. throughput c. bandwidth
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

19. 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
80 (HTTP)
FTP
To prevent the receiver from being overwhelmed by incoming data.

20. What command is used to change the default name to 'Costas'?
Router(config)# hostname Costas
Signal loss can be experienced.
A. HTTP b. HTTPS
When connecting a host to a switch.

21. What do you need to use for an initial configuration on a Cisco router?
A. MTA b. SMTP
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Console interface
A. low overhead b. connectionless

22. 3 measures of data transfer
Is used by the server to resolve names.
To enable a receiving host to forward the data to the appropriate application.
Network address
A. goodput b. throughput c. bandwidth

23. What is a component of a routing table entry?
32 bits
Next-Hop Address
0 to 1023
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

24. What is the primary function of encapsulating packets into frames?
To facilitate the entry and exit of data on media.
As the commands are entered.
Fiber
TCP initializes the sequence numbers for the sessions.

25. What is a protocol that provides connectionless network layer services?
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
They must wait until the first hosts finish transfering the media.
A. hot keys b. context-sensitive c. command syntax check
IP Protocol

26. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
80 (HTTP)
A. HTTP b. HTTPS
Hosts return to listen-before-transmit mode.
A. goodput b. throughput c. bandwidth

27. 3 primary functions of the data link layer encapsulation
The address of the router that the host will use to 'get to the other side'.
A. addressing b. error detection c. frame delimiting
Supports error detection.
Router(config)# interface FastEthernet 0/1

28. Which characteristics describe fiber optic cable?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
The magnetic field around the adjacent pairs of wire.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Originate data flow.

29. What is a benefit of a WAN?
A. hot keys b. context-sensitive c. command syntax check
Window Size
It does not support encryption.
Host mobility

30. To make a console connection from a comp to a Cisco router - what cable should be used?
A. show startup-config b. show running-config
A. HTTP b. HTTPS
A. next-hop b. metric/interface c. destination network address
Rollover cable

31. What device can check for faults - integrity and performance of media?
Application Layer
Destination is not contacted before a packet is sent.
OTDR
80 (HTTP)

32. 3 statements about the role of routers in the network
A. minimizing of collisions b. division into broadcast domains
A. decentralized resources b. resource sharing w/o a dedicated server
A. larger address space b. data types and classes of service c. authentication and encryption
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

33. What is an effect of improperly applying a network cable connector?
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.
Host A

34. 3 statements of media acess control
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
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
TCP initializes the sequence numbers for the sessions.
Fiber

35. 2 characteristics of peer-2-peer
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. decentralized resources b. resource sharing w/o a dedicated server
Supports error detection.
Console

36. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
MAC
Identify processes or services that are communicating with end devices.
A. performance degradation b. security issues c. host identification
Network Media Control

37. What is the primary purpose of ARP?
Resolve IPv4 addresses to MAC addresses.
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
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
TCP initializes the sequence numbers for the sessions.

38. 3 features that allow TCP to realibly and accurately track the transmission of data
When connecting a host to a switch.
Identify processes or services that are communicating with end devices.
255.255.255.0
A. flow control b. session establishment c. numbering and sequencing

39. 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
Signal loss can be experienced.
Wireless
Window Size

40. What is the primary reason for developing IPv6?
It has expanded adressing capabilities.
It reduces unnecessary broadcasts.
Physical
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

41. Important characteristic of UDP
Physical
Minimal delays in data delivery.
Binary ANDing
The packets will be delivered and reassembled at destination.

42. Which 2 options represent Layer 4 addressing?
IP Protocol
A. servers b. routers c. network printers
MAC
A. identifies the communicating applications b. identifies multiple conversations between the hosts

43. What characteristic of an UTP helps reduce interference?
It uses support from the lower layers to distinguish between connections to the service.
Collisions can decrease network performance.
Twisting of the cables
Source and Destination IP address

44. What are 2 common characteristics associated w/ dynamic routing protocols?
It provides for the exchange of data over a common local media.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
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
Rollover cable

45. What statements describe the logical token-passing topology?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. DNS b. SMTP c. POP
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
Network Layer

46. What does the IEEE 802.2 standard represent in Ethernet technologies?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Hosts return to listen-before-transmit mode.
Logical Link Control sublayer
2046

47. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. netstat -r b. route PRINT
TCP initializes the sequence numbers for the sessions.
A random delay helps prevent the stations from experiencing another collision during transmission.

48. What are 2 protocols for transfering web resources?
To enable a receiving host to forward the data to the appropriate application.
Originate data flow.
A. HTTP b. HTTPS
Signal loss can be experienced.

49. How does the application layer on a server process multiple client requests for services?
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 uses support from the lower layers to distinguish between connections to the service.
Network Layer Packet
A default gateway (router).

50. If there is a graphic representation of a company network wiring and equipment - What is this called?
Source and Destination IP address
MAC
A physical topology.
The packets will be delivered and reassembled at destination.

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CCNA - 2

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