Test your basic knowledge |

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 a protocol that provides connectionless network layer services?
A. MTA b. SMTP
Any device whose backoff timer expires first.
IP Protocol
Flash

2. What characteristic of an UTP helps reduce interference?
Twisting of the cables
It provides interface between applications on either end of the network.
Time-to-live (TTL)
They must wait until the first hosts finish transfering the media.

3. 3 statements about the role of routers in 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
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

4. 2 features that make switches preferable to hubs
A. minimizing of collisions b. division into broadcast domains
Time-to-live (TTL)
A. purpose b. geographic location c. ownership
IP is not properly installed

5. What are the advantages of using a client-server model?
The address of the router that the host will use to 'get to the other side'.
OTDR
Network
A. it has centralized administration b. security is easier to enforce

6. 2 most commonly used media types in ethernet networks
The magnetic field around the adjacent pairs of wire.
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. copper UTP b. optical fiber
Router(config)# interface FastEthernet 0/1

7. 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
Switch
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

8. What is the primary purpose of ARP?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
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
Application Layer

9. Which type of cable is most often associated w/ fiber-optic cable?
A backbone cable.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Time-to-live (TTL)
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

10. What are 2 commands used to view a host routing table?
Network Layer Packet
A. netstat -r b. route PRINT
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Collisions can decrease network performance.

11. What are 3 common problems w/ large networks?
A. perform degradation b. security issues c. host identification
It provides for the exchange of data over a common local media.
A. purpose b. geographic location c. ownership
SMB

12. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. enable mode b. priviledge executive mode
A. low overhead b. connectionless
A. larger address space b. data types and classes of service c. authentication and encryption
Console interface

13. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
A. DB 60 b. Winchester 15-pin c. smart serial
Signal loss can be experienced.
Switch
255.255.255.0

14. In business LANs - which connector is used w/ twisted-pair networking cable?
A. addressing b. error detection c. frame delimiting
It does not support encryption.
Twisting of the cables
RJ-45

15. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
A random delay helps prevent the stations from experiencing another collision during transmission.
172.16.192.160
255.255.255.224
No collisions will occur on this link.

16. What networking devices are recommended to be assigned static IP addresses?
255.255.255.224
Destination is not contacted before a packet is sent.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. servers b. routers c. network printers

17. There are too many broadcasts on switches - what can be done?
The destination host address.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. replace a switch w/ a router b. subnet the new networks
Is used by the server to resolve names.

18. What is the primary rope of the physical layer in transmitting data?
A. purpose b. geographic location c. ownership
Network portion
Create signals that represent the bits in each frame for the media.
Switch

19. What is the primary function of encapsulating packets into frames?
Collisions can decrease network performance.
To facilitate the entry and exit of data on media.
Destination Network Address
A. Cat5 UTP b. Cat6 UTP

20. What type of network cable is used between a terminal and a console port?
Console interface
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Rollover cable
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

21. 2 characteristics of clients in data networks
The address of the router that the host will use to 'get to the other side'.
A. they initiate data exchanges b. they may upload data to servers
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. private addresses are blocked from public internet by routers b. the ip address 127.0.0.1 is the loopback - directs traffic to itself

22. 3 terms that define the forms of help available within the Cisco IOS
Switch
A. hot keys b. context-sensitive c. command syntax check
Network
A. Physical b. Data Link

23. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Network address
To enable a receiving host to forward the data to the appropriate application.
Window Size
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

24. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
TCP initializes the sequence numbers for the sessions.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Transport
Network

25. 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. the router will discard the packet b. the router will send a time exceeded message to the source host
Twisting of the cables
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
When connecting a host to a switch.

26. What method of signal transmission uses radio waves to carry signals?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Wireless
IP is not properly installed
A physical topology.

27. What kind of problems are caused by excessive broadcast traffic on network segments?
Source Port
Router(config)# interface FastEthernet 0/1
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
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

28. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Router(config)# interface FastEthernet 0/1
Show Interfaces
Fiber

29. What can get you to an outside network?
Minimal delays in data delivery.
When connecting a host to a switch.
Network Media Control
A default gateway (router).

30. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. DB 60 b. Winchester 15-pin c. smart serial
Next-Hop Address
Is a layer of specific encapsulation.
A. servers b. routers c. network printers

31. Which device is used to create or divide broadcast domains?
It has expanded adressing capabilities.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Router
0 to 1023

32. What is the proper order of the OSI Layers?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Create signals that represent the bits in each frame for the media.
Signal loss can be experienced.
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?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Twisting of the cables
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Resolve IPv4 addresses to MAC addresses.

34. When is a straight-through cable used in a network?
Source and Destination IP address
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. copper UTP b. optical fiber
When connecting a host to a switch.

35. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
It provides interface between applications on either end of the network.
IP Protocol
MAC
A. servers b. routers c. network printers

36. What makes fiber preferable to copper for interconnecting buildings?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Source and Destination Ports
Window Size
The MAC protocol can be very simple.

37. 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. enable mode b. priviledge executive mode
A. show startup-config b. show running-config
As the commands are entered.
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

38. 3 statements of media acess control
DNS
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
8
SSH

39. 3 primary functions of the data link layer encapsulation
A. addressing b. error detection c. frame delimiting
A. MTA b. SMTP
Hub
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

40. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Switch
Router(config)# interface FastEthernet 0/1
Create signals that represent the bits in each frame for the media.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

41. What info is found in the TCP and UDP header info?
Hub
Source and Destination Ports
It provides interface between applications on either end of the network.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

42. In a connectionless system - What is correct?
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. flow control b. session establishment c. numbering and sequencing
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Destination is not contacted before a packet is sent.

43. What are 2 features of User Diagram Protocol (UDP)?
The destination host address.
Transport
As the commands are entered.
A. low overhead b. connectionless

44. How many bits make up an IPv4 address?
A. decentralized resources b. resource sharing w/o a dedicated server
32 bits
Host A
A. goodput b. throughput c. bandwidth

45. 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?
Supports error detection.
A random delay helps prevent the stations from experiencing another collision during transmission.
A. purpose b. geographic location c. ownership
Host A

46. statements of IP adressing
Network
When connecting a host to a switch.
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. Cat5 UTP b. Cat6 UTP

47. What is an automated service that matches resource names w/ required IP addresses?
DNS
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Application Layer
UTP

48. Statements that describe LAN
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. DB 60 b. Winchester 15-pin c. smart serial
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. the router will discard the packet b. the router will send a time exceeded message to the source host

49. Why are port numbers included in the TCP header of a segment?
Rollover cable
To enable a receiving host to forward the data to the appropriate application.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Collisions can decrease network performance.

50. 3 features of IPv6
Flash
Physical
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