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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 information is added during encapsulation at OSI Layer 3?
A. Physical b. Data Link
A. DB 60 b. Winchester 15-pin c. smart serial
Destination is not contacted before a packet is sent.
Source and Destination IP address

2. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
They must wait until the first hosts finish transfering the media.
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
Supports error detection.

3. What device can check for faults - integrity and performance of media?
Switch
OTDR
Rollover cable
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

4. What do the intermediary devices in the network do?
The packets will be delivered and reassembled at destination.
A. goodput b. throughput c. bandwidth
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. purpose b. geographic location c. ownership

5. What is a characteristic of a single-mode fiber-optic cable?
It uses lasers as the light source.
Wireless
32 bits
Identify processes or services that are communicating with end devices.

6. What networking devices are recommended to be assigned static IP addresses?
A. minimizing of collisions b. division into broadcast domains
A. servers b. routers c. network printers
Source Port
Host mobility

7. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
MAC
2046
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Physical

8. What connectors are commonly associated w/ Cisco's V.35 serial cables?
Network Layer
Source Port
A. servers b. routers c. network printers
A. DB 60 b. Winchester 15-pin c. smart serial

9. 3 statements about routes and their use
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
It uses lasers as the light source.
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
Identify the device that allows local network computers to communicate w/ devices in other networks.

10. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
The MAC protocol can be very simple.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Network address
Source and Destination IP address

11. What is the purpose of a default gateway?
The destination host address.
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
IP Protocol

12. How does the application layer on a server process multiple client requests for services?
Network Media Control
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
It uses support from the lower layers to distinguish between connections to the service.
172.16.192.160

13. 3 facts about the network portion of an IPv4 address
The physical address is added.
FTP
It provides for the exchange of data over a common local media.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

14. There are too many broadcasts on switches - what can be done?
A. replace a switch w/ a router b. subnet the new networks
Minimal delays in data delivery.
80 (HTTP)
Rollover cable

15. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
The physical address is added.
Binary ANDing
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

16. What is a characteristic of a logical point-to-point topology?
Network
The MAC protocol can be very simple.
A. router b. firewall
Source and Destination IP address

17. 2 characteristics of peer-2-peer
TCP initializes the sequence numbers for the sessions.
When connecting a host to a switch.
A. decentralized resources b. resource sharing w/o a dedicated server
32 bits

18. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
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
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Identify processes or services that are communicating with end devices.
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

19. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
IP Protocol
MAC
Flash
A. servers b. routers c. network printers

20. During a TCP session - if packets arrive out of order - what will happen?
Logical Link Control sublayer
To facilitate the entry and exit of data on media.
The packets will be delivered and reassembled at destination.
255.255.255.224

21. 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. goodput b. throughput c. bandwidth
RJ-45
Source Port
2046

22. 3 functions of the upper data link sublayer in the OSI model
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
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

23. What is the primary reason for developing IPv6?
TCP initializes the sequence numbers for the sessions.
It has expanded adressing capabilities.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
The packets will be delivered and reassembled at destination.

24. What is the primary function of encapsulating packets into frames?
It provides interface between applications on either end of the network.
Flash
A. purpose b. geographic location c. ownership
To facilitate the entry and exit of data on media.

25. What is the role of MTA in handling email?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A backbone cable.
A. Cat5 UTP b. Cat6 UTP
Identify processes or services that are communicating with end devices.

26. What determines the method of media access control?
Source and Destination IP address
Binary ANDing
To facilitate the entry and exit of data on media.
A. media sharing b. logical topology

27. What is the proper order of the OSI Layers?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Rollover cable
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

28. What type of network cable is used between a terminal and a console port?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. physical layer b. DLL layer
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Rollover cable

29. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
It uses support from the lower layers to distinguish between connections to the service.
A. goodput b. throughput c. bandwidth
Network Media Control
UDP

30. What command can be used to determine if the router has experienced any input or output errors?
Flash
The destination host address.
Show Interfaces
The magnetic field around the adjacent pairs of wire.

31. 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?
A. show startup-config b. show running-config
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
A. hot keys b. context-sensitive c. command syntax check
Supports error detection.

32. 3 terms that define the forms of help available within the Cisco IOS
A. hot keys b. context-sensitive c. command syntax check
The MAC protocol can be very simple.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
The destination host address.

33. What application layer protocol is used to support file transfers between client and server?
To enable a receiving host to forward the data to the appropriate application.
DNS
FTP
Rollover cable

34. During encapsulation - what happens in the Data Link Layer?
IP is not properly installed
The magnetic field around the adjacent pairs of wire.
Wireless
The physical address is added.

35. 3 properties of peer-2-peer applications
A. application b. services
SSH
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
DNS

36. What method of signal transmission uses radio waves to carry signals?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
80 (HTTP)
Wireless
A. media sharing b. logical topology

37. Which layer supplies services and allows user interface?
Transport
Application Layer
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
SSH

38. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. enable mode b. priviledge executive mode
Logical Link Control sublayer
A. not affected by EMI of RFI b. most expensive type of LAN cabling

39. In business LANs - which connector is used w/ twisted-pair networking cable?
255.255.255.0
DNS
Binary ANDing
RJ-45

40. Which IP packet field will prevent endless loops?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
The physical address is added.
Time-to-live (TTL)
Transport

41. What describes the purpose of default route?
The packets will be delivered and reassembled at destination.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. purpose b. geographic location c. ownership
Source and Destination Ports

42. What statements describe the logical token-passing topology?
To facilitate the entry and exit of data on media.
Wireless
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

43. Why are port numbers included in the TCP header of a segment?
Collisions can decrease network performance.
Router(config)# hostname Costas
To enable a receiving host to forward the data to the appropriate application.
RJ-45

44. 3 factors that should be considered when implementing Layer 2 protocols
Console interface
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. application b. presentation c. session d. transmision e. network f. data link g. physical
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

45. Network Protocols
Physical
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

46. What is a disadvantage of Telnet?
RJ-45
No collisions will occur on this link.
A. minimizing of collisions b. division into broadcast domains
It does not support encryption.

47. To make a console connection from a comp to a Cisco router - what cable should be used?
Application Layer
Wireless
MAC
Rollover cable

48. What does the IEEE 802.2 standard represent in Ethernet technologies?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Any device whose backoff timer expires first.
Logical Link Control sublayer
Identify processes or services that are communicating with end devices.

49. 2 things that will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away
A. the router will discard the packet b. the router will send a time exceeded message to the source host
8
Rollover cable
A random delay helps prevent the stations from experiencing another collision during transmission.

50. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
It has expanded adressing capabilities.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
IP is not properly installed
Identify the device that allows local network computers to communicate w/ devices in other networks.

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CCNA - 2

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