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 makes fiber preferable to copper for interconnecting buildings?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Physical
A. HTTP b. HTTPS
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

2. An admin needs to keep contents private - which access method should he use?
Window Size
Application Layer
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
SSH

3. What is a default gateway address?

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4. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
It provides for the exchange of data over a common local media.
255.255.255.224
A. netstat -r b. route PRINT
Window Size

5. In a connectionless system - What is correct?
A. physical layer b. DLL layer
Destination is not contacted before a packet is sent.
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. 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

6. Why is flow control used for TCP data transfer?
A backbone cable.
To prevent the receiver from being overwhelmed by incoming data.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Hosts return to listen-before-transmit mode.

7. What are 3 properties of contention-based media access for a shared 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.
A. non-deterministic b. less overhead c. collisions exist
32 bits

8. What can be a problem that is reduced by adding end-to-end addressing?
TCP initializes the sequence numbers for the sessions.
It reduces unnecessary broadcasts.
Is a layer of specific encapsulation.
A. performance degradation b. security issues c. host identification

9. What is the proper order of the OSI Layers?
It uses support from the lower layers to distinguish between connections to the service.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A physical topology.
Console

10. When is a straight-through cable used in a network?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
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
When connecting a host to a switch.

11. After an ethernet collision - which device has priority to transmit data?
Any device whose backoff timer expires first.
Network
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. performance degradation b. security issues c. host identification

12. What is a characteristic of a logical point-to-point topology?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. the router will discard the packet b. the router will send a time exceeded message to the source host
The MAC protocol can be very simple.
2046

13. Which layer supplies services and allows user interface?
FTP
Logical Link Control sublayer
TCP initializes the sequence numbers for the sessions.
Application Layer

14. What is the primary purpose of Layer 4?
To prevent the receiver from being overwhelmed by incoming data.
Identify processes or services that are communicating with end devices.
172.16.192.160
A. minimizing of collisions b. division into broadcast domains

15. What networking devices are recommended to be assigned static IP addresses?
8
Wireless
A. servers b. routers c. network printers
A. it has centralized administration b. security is easier to enforce

16. What can get you to an outside network?
The destination host address.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A default gateway (router).
OTDR

17. Which characteristics describe fiber optic cable?
2046
A. DNS b. SMTP c. POP
A default gateway (router).
A. not affected by EMI of RFI b. most expensive type of LAN cabling

18. 3 features of IPv6
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. larger address space b. data types and classes of service c. authentication and encryption
80 (HTTP)
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

19. What is a disadvantage of Telnet?
DNS
It does not support encryption.
Application Layer
Router(config)# interface FastEthernet 0/1

20. What connectors are commonly associated w/ Cisco's V.35 serial cables?
It provides for the exchange of data over a common local media.
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
A. DB 60 b. Winchester 15-pin c. smart serial

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?
2046
A random delay helps prevent the stations from experiencing another collision during transmission.
Supports error detection.
Fiber

22. To make a console connection from a comp to a Cisco router - what cable should be used?
Host A
The physical address is added.
To facilitate the entry and exit of data on media.
Rollover cable

23. What is the purpose of the TCP/IP Network Application Layer?
Destination is not contacted before a packet is sent.
Network Media Control
Ctrl + Shift + 6
A. enable mode b. priviledge executive mode

24. When a device is moved from one network to the other...?
A. goodput b. throughput c. bandwidth
A. flow control b. session establishment c. numbering and sequencing
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
Is used by the server to resolve names.

25. 3 primary functions of the data link layer encapsulation
A. the router will discard the packet b. the router will send a time exceeded message to the source host
UDP
Hub
A. addressing b. error detection c. frame delimiting

26. When do changes take effect in a Cisco router?
As the commands are entered.
Identify processes or services that are communicating with end devices.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A physical topology.

27. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Network Layer Packet
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Hub
IP Protocol

28. What device can check for faults - integrity and performance of media?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
OTDR
Destination is not contacted before a packet is sent.
Any device whose backoff timer expires first.

29. What is a benefit of a WAN?
A. hot keys b. context-sensitive c. command syntax check
A. media sharing b. logical topology
Host mobility
The destination host address.

30. 3 facts about the network portion of an IPv4 address
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
UDP
Collisions can decrease network performance.
Console

31. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
A. copper UTP b. optical fiber
A random delay helps prevent the stations from experiencing another collision during transmission.
A. application b. services
Application Layer

32. What do the intermediary devices in the network do?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
MAC
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
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. 2 features that make switches preferable to hubs
Signal loss can be experienced.
255.255.255.0
A. minimizing of collisions b. division into broadcast domains
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

34. What 2 type of cables would most commonly be used for new runs?
A. Cat5 UTP b. Cat6 UTP
Hub
Identify processes or services that are communicating with end devices.
A. copper UTP b. optical fiber

35. What are the advantages of using a client-server model?
A. it has centralized administration b. security is easier to enforce
SSH
A physical topology.
Physical

36. What are 2 email components used to forward mail between servers?
2046
A. MTA b. SMTP
It provides interface between applications on either end of the network.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

37. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
The destination host address.
8
0 to 1023
A. perform degradation b. security issues c. host identification

38. What does the IEEE 802.2 standard represent in Ethernet technologies?
Logical Link Control sublayer
A. servers b. routers c. network printers
A random delay helps prevent the stations from experiencing another collision during transmission.
Wireless

39. Which combination of keys can be used to interrupt a ping or traceroute process?
Console interface
A. goodput b. throughput c. bandwidth
Ctrl + Shift + 6
Show Interfaces

40. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Binary ANDing
A. goodput b. throughput c. bandwidth

41. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
A. netstat -r b. route PRINT
Network Layer
Switch
2046

42. Why are port numbers included in the TCP header of a segment?
Is used by the server to resolve names.
Resolve IPv4 addresses to MAC addresses.
To enable a receiving host to forward the data to the appropriate application.
Is a layer of specific encapsulation.

43. 2 characteristics of clients in data networks
A. show startup-config b. show running-config
A. they initiate data exchanges b. they may upload data to servers
A. application b. services
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

44. What is the purpose of a default gateway?
Network
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Identify the device that allows local network computers to communicate w/ devices in other networks.
Hosts return to listen-before-transmit mode.

45. Which device is used to create or divide broadcast domains?
Router
A. low overhead b. connectionless
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 physical topology.

46. What is dinamically selected by the source host when forwarding data?
Source Port
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. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Destination is not contacted before a packet is sent.

47. 3 terms that define the forms of help available within the Cisco IOS
Is used by the server to resolve names.
A. hot keys b. context-sensitive c. command syntax check
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
32 bits

48. What statements describe the logical token-passing topology?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. purpose b. geographic location c. ownership
Next-Hop Address
A. show startup-config b. show running-config

49. What are 2 protocols for transfering web resources?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. HTTP b. HTTPS
A default gateway (router).
A. enable mode b. priviledge executive mode

50. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
Is used by the server to resolve names.
SMB
A. they initiate data exchanges b. they may upload data to servers
Router(config)# interface FastEthernet 0/1