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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. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
DNS
Router(config)# interface FastEthernet 0/1
Time-to-live (TTL)

2. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
IP Protocol
Host A
Network Media Control
MAC

3. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Hub
A. perform degradation b. security issues c. host identification
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Show Interfaces

4. What do you need to use for an initial configuration on a Cisco router?
It does not support encryption.
Console interface
2046
Any device whose backoff timer expires first.

5. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
A. physical layer b. DLL layer
Transport
Network Access
The address of the router that the host will use to 'get to the other side'.

6. What are the advantages of using a client-server model?
IP is not properly installed
It provides for the exchange of data over a common local media.
No collisions will occur on this link.
A. it has centralized administration b. security is easier to enforce

7. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
To facilitate the entry and exit of data on media.
Network address
Application Layer
The packets will be delivered and reassembled at destination.

8. What are 2 common characteristics associated w/ dynamic routing protocols?
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. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
It uses support from the lower layers to distinguish between connections to the service.
A. addressing b. error detection c. frame delimiting

9. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
TCP initializes the sequence numbers for the sessions.
Router(config)# hostname Costas
0 to 1023
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

10. What networking devices are recommended to be assigned static IP addresses?
It provides interface between applications on either end of the network.
OTDR
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. servers b. routers c. network printers

11. Which 2 options represent Layer 4 addressing?
As the commands are entered.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

12. 3 common problems w/ a large network
The physical address is added.
Create signals that represent the bits in each frame for the media.
A. physical layer b. DLL layer
A. performance degradation b. security issues c. host identification

13. What is a characteristic of a single-mode fiber-optic cable?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
It uses lasers as the light source.
A. netstat -r b. route PRINT
Router(config)# interface FastEthernet 0/1

14. What correctly describes a MAC address?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. hot keys b. context-sensitive c. command syntax check
A. next-hop b. metric/interface c. destination network address

15. 3 statements about routes and their use
A. enable mode b. priviledge executive mode
A. they initiate data exchanges b. they may upload data to servers
Network Layer
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

16. 3 properties of peer-2-peer applications
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. 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
Collisions can decrease network performance.
A. application b. services

17. 3 features of IPv6
SSH
Host mobility
A. larger address space b. data types and classes of service c. authentication and encryption
It reduces unnecessary broadcasts.

18. At which layers of the OSI model does ethernet operate?
The packets will be delivered and reassembled at destination.
Source and Destination Ports
A. physical layer b. DLL layer
A. media sharing b. logical topology

19. What is a protocol that provides connectionless network layer services?
Source Port
The physical address is added.
IP Protocol
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

20. What are 3 common problems w/ large networks?
The MAC protocol can be very simple.
A. perform degradation b. security issues c. host identification
Source and Destination IP address
Router

21. What device can check for faults - integrity and performance of media?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Application Layer
Flash
OTDR

22. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Supports error detection.
Hosts return to listen-before-transmit mode.
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

23. When a device is moved from one network to the other...?
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. 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. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

24. 3 measures of data transfer
As the commands are entered.
A. goodput b. throughput c. bandwidth
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. MTA b. SMTP

25. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
A. they initiate data exchanges b. they may upload data to servers
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
255.255.255.0
RJ-45

26. What are 2 protocols for transfering web resources?
A. HTTP b. HTTPS
SSH
It has expanded adressing capabilities.
Switch

27. How does the application layer on a server process multiple client requests for services?
Destination Network Address
Supports error detection.
As the commands are entered.
It uses support from the lower layers to distinguish between connections to the service.

28. statements of IP adressing
OTDR
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
A. larger address space b. data types and classes of service c. authentication and encryption
Hub

29. What can get you to an outside network?
A random delay helps prevent the stations from experiencing another collision during transmission.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A default gateway (router).

30. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Console interface
Fiber
A. copper UTP b. optical fiber
Source Port

31. What is the primary purpose of ARP?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. servers b. routers c. network printers
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Resolve IPv4 addresses to MAC addresses.

32. 2 characteristics of peer-2-peer
Network portion
A. it has centralized administration b. security is easier to enforce
They must wait until the first hosts finish transfering the media.
A. decentralized resources b. resource sharing w/o a dedicated server

33. How many bits make up an IPv4 address?
Window Size
The address of the router that the host will use to 'get to the other side'.
As the commands are entered.
32 bits

34. 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
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 physical topology.
Is used by the server to resolve names.

35. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A random delay helps prevent the stations from experiencing another collision during transmission.
No collisions will occur on this link.
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. enable mode b. priviledge executive mode

36. 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?
Rollover cable
8
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. copper UTP b. optical fiber

37. When destination network is not in the routing table - What are 2 actions the router might take?
A. media sharing b. logical topology
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Identify the device that allows local network computers to communicate w/ devices in other networks.
The MAC protocol can be very simple.

38. What command is used to change the default name to 'Costas'?
SSH
Router(config)# hostname Costas
Host A
A. application b. presentation c. session d. transmision e. network f. data link g. physical

39. What info is found in the TCP and UDP header info?
Source and Destination Ports
Twisting of the cables
The physical address is added.
Fiber

40. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
MAC
A. Physical b. Data Link
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Originate data flow.

41. What is the role of the OSI Application Layer?
A. enable mode b. priviledge executive mode
Network address
Binary ANDing
It provides interface between applications on either end of the network.

42. Which portion of the network layer address does a router use to forward packets?
8
Network portion
It uses lasers as the light source.
A. it has centralized administration b. security is easier to enforce

43. Important characteristic of UDP
Router
Minimal delays in data delivery.
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

44. After an ethernet collision - which device has priority to transmit data?
Any device whose backoff timer expires first.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
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
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

45. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
Destination Network Address
Is a layer of specific encapsulation.
8
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

46. Where is the IOS file stored at?
IP is not properly installed
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Flash
RJ-45

47. What is the purpose of the TCP/IP Network Application Layer?
Network Media Control
A physical topology.
The MAC protocol can be very simple.
Flash

48. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. perform degradation b. security issues c. host identification
Router(config)# interface FastEthernet 0/1
It has expanded adressing capabilities.

49. What causes crosstalk within cable pairs when using UTP?
FTP
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Ctrl + Shift + 6
The magnetic field around the adjacent pairs of wire.

50. What is a disadvantage of Telnet?
It provides for the exchange of data over a common local media.
A. low overhead b. connectionless
It does not support encryption.
No collisions will occur on this link.