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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. 3 primary functions of the data link layer encapsulation
As the commands are entered.
172.16.192.160
A. addressing b. error detection c. frame delimiting
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

2. What is the purpose of the TCP/IP Network Application Layer?
The address of the router that the host will use to 'get to the other side'.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Network Media Control
Network portion

3. What is a protocol that provides connectionless network layer services?
IP Protocol
A. Physical b. Data Link
A. copper UTP b. optical fiber
Fiber

4. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Collisions can decrease network performance.
Router(config)# interface FastEthernet 0/1
Rollover cable
MAC

5. What is the primary reason for developing IPv6?
Source Port
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
Resolve IPv4 addresses to MAC addresses.
It has expanded adressing capabilities.

6. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
It provides for the exchange of data over a common local media.
A. decentralized resources b. resource sharing w/o a dedicated server
A. application b. services
Hosts return to listen-before-transmit mode.

7. What are 3 pieces of info about a route contained in a routing table?
Window Size
A. next-hop b. metric/interface c. destination network address
A. Cat5 UTP b. Cat6 UTP
Twisting of the cables

8. 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
IP is not properly installed
Fiber
SSH

9. 2 most commonly used media types in ethernet networks
Source and Destination Ports
A. copper UTP b. optical fiber
To enable a receiving host to forward the data to the appropriate application.
To prevent the receiver from being overwhelmed by incoming data.

10. 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?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. DNS b. SMTP c. POP
Host A
A. HTTP b. HTTPS

11. What is the role of the OSI Application Layer?
Router(config)# hostname Costas
It provides interface between applications on either end of the network.
SMB
A. low overhead b. connectionless

12. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
TCP initializes the sequence numbers for the sessions.
The MAC protocol can be very simple.
Router(config)# hostname Costas
A. enable mode b. priviledge executive mode

13. 3 features of IPv6
A. larger address space b. data types and classes of service c. authentication and encryption
Console interface
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. next-hop b. metric/interface c. destination network address

14. What determines the method of media access control?
Ctrl + Shift + 6
A. the router will discard the packet b. the router will send a time exceeded message to the source host
It reduces unnecessary broadcasts.
A. media sharing b. logical topology

15. 3 statements about the role of routers in the network
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. media sharing b. logical topology
A. not affected by EMI of RFI b. most expensive type of LAN cabling
They must wait until the first hosts finish transfering the media.

16. What are 2 common characteristics associated w/ dynamic routing protocols?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
2046
255.255.255.0
To facilitate the entry and exit of data on media.

17. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
Time-to-live (TTL)
A. router b. firewall
A. next-hop b. metric/interface c. destination network address
255.255.255.0

18. 3 protocols that operate in the application layer
A. Cat5 UTP b. Cat6 UTP
Window Size
A. DNS b. SMTP c. POP
Identify processes or services that are communicating with end devices.

19. 3 properties of peer-2-peer applications
Supports error detection.
IP Protocol
It provides for the exchange of data over a common local media.
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

20. What device can check for faults - integrity and performance of media?
Destination is not contacted before a packet is sent.
Transport
OTDR
A default gateway (router).

21. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. performance degradation b. security issues c. host identification
A. Physical b. Data Link
80 (HTTP)

22. 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. low overhead b. connectionless
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Router
A. perform degradation b. security issues c. host identification

23. Which layer supplies services and allows user interface?
Transport
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Static
Application Layer

24. What is an automated service that matches resource names w/ required IP addresses?
Hub
DNS
A. the router will discard the packet b. the router will send a time exceeded message to the source host
TCP initializes the sequence numbers for the sessions.

25. What is the purpose of a default gateway?
Identify the device that allows local network computers to communicate w/ devices in other networks.
Minimal delays in data delivery.
A. servers b. routers c. network printers
Destination Network Address

26. 3 terms that define the forms of help available within the Cisco IOS
A. hot keys b. context-sensitive c. command syntax check
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
8
Resolve IPv4 addresses to MAC addresses.

27. During a TCP session - if packets arrive out of order - what will happen?
Twisting of the cables
The packets will be delivered and reassembled at destination.
Window Size
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

28. What do end devices do?
255.255.255.0
Originate data flow.
A. MTA b. SMTP
Minimal delays in data delivery.

29. 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?
Console interface
RJ-45
2046
Binary ANDing

30. At which layer of the TCP/IP model does ethernet operate?
80 (HTTP)
Network Access
A. next-hop b. metric/interface c. destination network address
It provides interface between applications on either end of the network.

31. 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.
Hosts return to listen-before-transmit mode.
A. performance degradation b. security issues c. host identification
Wireless

32. 3 facts about the network portion of an IPv4 address
Physical
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
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

33. What is the purpose of the preamble in an ethernet frame?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Console interface
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
It provides interface between applications on either end of the network.

34. What are 2 features of User Diagram Protocol (UDP)?
A. low overhead b. connectionless
SMB
The physical address is added.
Fiber

35. 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. security is difficult to enforce b. if one of the computers is responding to file sharing requests - that computer is functioning as a server
0 to 1023
A. next-hop b. metric/interface c. destination network address

36. 3 features that allow TCP to realibly and accurately track the transmission of data
Application Layer
32 bits
A. flow control b. session establishment c. numbering and sequencing
It has expanded adressing capabilities.

37. What are the advantages of using a client-server model?
IP Protocol
A. it has centralized administration b. security is easier to enforce
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A random delay helps prevent the stations from experiencing another collision during transmission.

38. What is a disadvantage of Telnet?
To enable a receiving host to forward the data to the appropriate application.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
It does not support encryption.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

39. What networking devices are recommended to be assigned static IP addresses?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Originate data flow.
A. servers b. routers c. network printers
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

40. What causes crosstalk within cable pairs when using UTP?
Network Media Control
It provides interface between applications on either end of the network.
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 magnetic field around the adjacent pairs of wire.

41. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
A random delay helps prevent the stations from experiencing another collision during transmission.
A. application b. services
A. servers b. routers c. network printers
Window Size

42. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Binary ANDing
The magnetic field around the adjacent pairs of wire.
It provides interface between applications on either end of the network.
A. application b. services

43. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
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
Switch
Network address
Signal loss can be experienced.

44. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
255.255.255.224
Originate data flow.
SMB
A. application b. presentation c. session d. transmision e. network f. data link g. physical

45. 3 measures of data transfer
A. low overhead b. connectionless
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
A. goodput b. throughput c. bandwidth
Time-to-live (TTL)

46. What type of routing uses information that is manually entered into the routing table?
Originate data flow.
Static
Source and Destination Ports
Hosts return to listen-before-transmit mode.

47. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
A default gateway (router).
Network Layer Packet
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. enable mode b. priviledge executive mode

48. What are key considering factors when grouping hosts into common networks?
It reduces unnecessary broadcasts.
A. purpose b. geographic location c. ownership
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. addressing b. error detection c. frame delimiting

49. What can you identify when you examine the Network Layer header?
Identify processes or services that are communicating with end devices.
The destination host address.
Source Port
A. router b. firewall

50. What are 2 email components used to forward mail between servers?
A. servers b. routers c. network printers
A. not affected by EMI of RFI b. most expensive type of LAN cabling
0 to 1023
A. MTA b. SMTP