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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 the purpose of the TCP/IP Network Application Layer?
A. media sharing b. logical topology
Network Media Control
Network Layer Packet
Source and Destination IP address

2. A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
8
Transport
Network portion
172.16.192.160

3. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
80 (HTTP)
Fiber
A. DB 60 b. Winchester 15-pin c. smart serial
A. minimizing of collisions b. division into broadcast domains

4. After an ethernet collision - which device has priority to transmit data?
32 bits
Network Access
Any device whose backoff timer expires first.
To prevent the receiver from being overwhelmed by incoming data.

5. 3 primary functions of the data link layer encapsulation
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
172.16.192.160
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. addressing b. error detection c. frame delimiting

6. Intermediary devices used to implement security between networks
A. router b. firewall
A. the router will discard the packet b. the router will send a time exceeded message to the source host
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 random delay helps prevent the stations from experiencing another collision during transmission.

7. 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
A. netstat -r b. route PRINT
The magnetic field around the adjacent pairs of wire.
MAC

8. What event occurs during the 3-way handshake?
Rollover cable
The destination host address.
A. minimizing of collisions b. division into broadcast domains
TCP initializes the sequence numbers for the sessions.

9. To make a console connection from a comp to a Cisco router - what cable should be used?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Window Size
A. it has centralized administration b. security is easier to enforce
Rollover cable

10. Where is the IOS file stored at?
172.16.192.160
RJ-45
Flash
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

11. What type of network cable is used between a terminal and a console port?
Rollover cable
Time-to-live (TTL)
SMB
To prevent the receiver from being overwhelmed by incoming data.

12. What is a benefit of a WAN?
A. low overhead b. connectionless
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. netstat -r b. route PRINT
Host mobility

13. 3 features of IPv6
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
Minimal delays in data delivery.
It provides for the exchange of data over a common local media.

14. How many bits make up an IPv4 address?
Minimal delays in data delivery.
Rollover cable
As the commands are entered.
32 bits

15. What application layer protocol is used to support file transfers between client and server?
FTP
A. DNS b. SMTP c. POP
Is a layer of specific encapsulation.
A. show startup-config b. show running-config

16. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Supports error detection.
Minimal delays in data delivery.
Collisions can decrease network performance.
Binary ANDing

17. What is the primary purpose of ARP?
RJ-45
Resolve IPv4 addresses to MAC addresses.
Network Access
Twisting of the cables

18. 3 functions of the upper data link sublayer in the OSI model
255.255.255.224
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Window Size

19. What is a default gateway address?

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20. What is the purpose of resource records in DNS?
A. DNS b. SMTP c. POP
Is used by the server to resolve names.
A default gateway (router).
A. not affected by EMI of RFI b. most expensive type of LAN cabling

21. What is a component of a routing table entry?
Network portion
Host A
The packets will be delivered and reassembled at destination.
Next-Hop Address

22. What does the IEEE 802.2 standard represent in Ethernet technologies?
Logical Link Control sublayer
UTP
Network Access
Transport

23. During a TCP session - if packets arrive out of order - what will happen?
A. router b. firewall
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
The packets will be delivered and reassembled at destination.
A. addressing b. error detection c. frame delimiting

24. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
A. hot keys b. context-sensitive c. command syntax check
It reduces unnecessary broadcasts.
UTP
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

25. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
A. decentralized resources b. resource sharing w/o a dedicated server
Hosts return to listen-before-transmit mode.
A. next-hop b. metric/interface c. destination network address
The magnetic field around the adjacent pairs of wire.

26. 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
A. Cat5 UTP b. Cat6 UTP
Source Port
It does not support encryption.

27. What are 3 properties of contention-based media access for a shared media?
A. non-deterministic b. less overhead c. collisions exist
Create signals that represent the bits in each frame for the media.
IP is not properly installed
A. flow control b. session establishment c. numbering and sequencing

28. If you have a full-duplex operational network - what can happen?
No collisions will occur on this link.
A. Cat5 UTP b. Cat6 UTP
Switch
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

29. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
80 (HTTP)
A. HTTP b. HTTPS
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Transport

30. What characteristic of an UTP helps reduce interference?
Show Interfaces
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
Any device whose backoff timer expires first.
Twisting of the cables

31. Which 2 options represent Layer 4 addressing?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Next-Hop Address
The magnetic field around the adjacent pairs of wire.

32. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
When connecting a host to a switch.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Console interface
A. Physical b. Data Link

33. What is the proper order of the OSI Layers?
The magnetic field around the adjacent pairs of wire.
Network
Router
A. application b. presentation c. session d. transmision e. network f. data link g. physical

34. What is the role of MTA in handling email?
A. netstat -r b. route PRINT
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Router(config)# interface FastEthernet 0/1
A. enable mode b. priviledge executive mode

35. What are 2 features of User Diagram Protocol (UDP)?
A. low overhead b. connectionless
80 (HTTP)
To enable a receiving host to forward the data to the appropriate application.
172.16.192.160

36. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
A. physical layer b. DLL layer
0 to 1023
They must wait until the first hosts finish transfering the media.
Source and Destination Ports

37. What are 3 common problems w/ large networks?
A. perform degradation b. security issues c. host identification
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. DB 60 b. Winchester 15-pin c. smart serial
Switch

38. 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?
Host A
To enable a receiving host to forward the data to the appropriate application.
Source and Destination IP address
A. MTA b. SMTP

39. What is the primary purpose of Layer 4?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
It does not support encryption.
Identify processes or services that are communicating with end devices.
Network

40. What is the primary function of encapsulating packets into frames?
A. next-hop b. metric/interface c. destination network address
Wireless
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
To facilitate the entry and exit of data on media.

41. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
SMB
A. decentralized resources b. resource sharing w/o a dedicated server
IP Protocol
A. copper UTP b. optical fiber

42. 3 properties of peer-2-peer applications
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
MAC
Any device whose backoff timer expires first.
Console interface

43. What is PDU?
A. minimizing of collisions b. division into broadcast domains
Is a layer of specific encapsulation.
It provides interface between applications on either end of the network.
Source Port

44. 3 facts about the network portion of an IPv4 address
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
Source and Destination Ports
When connecting a host to a switch.

45. What is the function of the DLL?
A. show startup-config b. show running-config
8
A. DB 60 b. Winchester 15-pin c. smart serial
It provides for the exchange of data over a common local media.

46. What is a protocol that provides connectionless network layer services?
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
They must wait until the first hosts finish transfering the media.
When connecting a host to a switch.
IP Protocol

47. When a network service fails - which port is most often used to access a router for management purposes?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Console
Logical Link Control sublayer
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

48. 2 characteristics of clients in data networks
Rollover cable
A. physical layer b. DLL layer
A. non-deterministic b. less overhead c. collisions exist
A. they initiate data exchanges b. they may upload data to servers

49. Which portion of the network layer address does a router use to forward packets?
The packets will be delivered and reassembled at destination.
A. performance degradation b. security issues c. host identification
UTP
Network portion

50. Why are port numbers included in the TCP header of a segment?
A. minimizing of collisions b. division into broadcast domains
A. MTA b. SMTP
To enable a receiving host to forward the data to the appropriate application.
Wireless