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 the purpose of a default gateway?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Create signals that represent the bits in each frame for the media.
Physical
Identify the device that allows local network computers to communicate w/ devices in other networks.

2. 2 characteristics of peer-2-peer
A. decentralized resources b. resource sharing w/o a dedicated server
255.255.255.0
255.255.255.224
To enable a receiving host to forward the data to the appropriate application.

3. What are 3 pieces of info about a route contained in a routing table?
8
A. next-hop b. metric/interface c. destination network address
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. Cat5 UTP b. Cat6 UTP

4. Which layer supplies services and allows user interface?
Ctrl + Shift + 6
Console interface
Application Layer
A. replace a switch w/ a router b. subnet the new networks

5. When is a straight-through cable used in a network?
IP is not properly installed
The MAC protocol can be very simple.
Create signals that represent the bits in each frame for the media.
When connecting a host to a switch.

6. What is PDU?
SSH
Is a layer of specific encapsulation.
Wireless
Show Interfaces

7. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Flash
Router(config)# interface FastEthernet 0/1
When connecting a host to a switch.
Physical

8. What are 2 common characteristics associated w/ dynamic routing protocols?
They must wait until the first hosts finish transfering the media.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
32 bits

9. To make a console connection from a comp to a Cisco router - what cable should be used?
Destination is not contacted before a packet is sent.
Source and Destination IP address
A. router b. firewall
Rollover cable

10. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
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
SSH
Network portion
A random delay helps prevent the stations from experiencing another collision during transmission.

11. Intermediary devices used to implement security between networks
Fiber
Switch
A. router b. firewall
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

12. What info is found in the TCP and UDP header info?
A physical topology.
A. purpose b. geographic location c. ownership
Source and Destination Ports
Static

13. What method of signal transmission uses radio waves to carry signals?
Twisting of the cables
Wireless
Network Access
Router(config)# interface FastEthernet 0/1

14. What is the function of the DLL?
A. non-deterministic b. less overhead c. collisions exist
The MAC protocol can be very simple.
Network address
It provides for the exchange of data over a common local media.

15. What is a default gateway address?

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16. What is a characteristic of a single-mode fiber-optic cable?
The MAC protocol can be very simple.
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
It uses lasers as the light source.

17. What makes fiber preferable to copper for interconnecting buildings?
It reduces unnecessary broadcasts.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Wireless
As the commands are entered.

18. 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
It provides for the exchange of data over a common local media.
A. HTTP b. HTTPS
Switch

19. What can get you to an outside network?
Source and Destination IP address
A. MTA b. SMTP
A default gateway (router).
Network Access

20. What is the primary purpose of ARP?
A. copper UTP b. optical fiber
A. physical layer b. DLL layer
Resolve IPv4 addresses to MAC addresses.
Signal loss can be experienced.

21. There are too many broadcasts on switches - what can be done?
A. replace a switch w/ a router b. subnet the new networks
To facilitate the entry and exit of data on media.
0 to 1023
Twisting of the cables

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?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Rollover cable
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
SSH

23. What are 2 forms of application layer software?
A. application b. services
A. minimizing of collisions b. division into broadcast domains
Network Media Control
A. low overhead b. connectionless

24. What are 3 properties of contention-based media access for a shared media?
It reduces unnecessary broadcasts.
TCP initializes the sequence numbers for the sessions.
A. non-deterministic b. less overhead c. collisions exist
When connecting a host to a switch.

25. 2 most commonly used media types in ethernet networks
Router(config)# interface FastEthernet 0/1
It has expanded adressing capabilities.
The packets will be delivered and reassembled at destination.
A. copper UTP b. optical fiber

26. What is a component of a routing table entry?
Next-Hop Address
When connecting a host to a switch.
Any device whose backoff timer expires first.
A random delay helps prevent the stations from experiencing another collision during transmission.

27. What characteristic of an UTP helps reduce interference?
OTDR
Twisting of the cables
Router
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

28. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Destination Network Address
A. minimizing of collisions b. division into broadcast domains
Flash

29. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
A. HTTP b. HTTPS
Transport
Rollover cable
Destination Network Address

30. At which layer of the TCP/IP model does ethernet operate?
Network Access
The physical address is added.
The address of the router that the host will use to 'get to the other side'.
Source and Destination Ports

31. What application layer protocol is used to support file transfers between client and server?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Source Port
Twisting of the cables
FTP

32. Which type of cable is most often associated w/ fiber-optic cable?
No collisions will occur on this link.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A backbone cable.
IP Protocol

33. Why is flow control used for TCP data transfer?
To enable a receiving host to forward the data to the appropriate application.
To prevent the receiver from being overwhelmed by incoming data.
A. DB 60 b. Winchester 15-pin c. smart serial
A. minimizing of collisions b. division into broadcast domains

34. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
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
255.255.255.224
Hosts return to listen-before-transmit mode.
IP is not properly installed

35. What event occurs during the 3-way handshake?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Hosts return to listen-before-transmit mode.
TCP initializes the sequence numbers for the sessions.
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

36. Statements that describe LAN
Source Port
A. perform degradation b. security issues c. host identification
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. copper UTP b. optical fiber

37. What are the advantages of using a client-server model?
A. it has centralized administration b. security is easier to enforce
A. copper UTP b. optical fiber
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. enable mode b. priviledge executive mode

38. 2 functions of encapsulation
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
Resolve IPv4 addresses to MAC addresses.
Rollover cable
A. media sharing b. logical topology

39. Which device is used to create or divide broadcast domains?
To prevent the receiver from being overwhelmed by incoming data.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Router
A. router b. firewall

40. How does the application layer on a server process multiple client requests for services?
The destination host address.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. application b. presentation c. session d. transmision e. network f. data link g. physical
It uses support from the lower layers to distinguish between connections to the service.

41. Default Gateway is incorrect on the host - What is the impact on the communications?
A backbone cable.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A default gateway (router).
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

42. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
Destination is not contacted before a packet is sent.
80 (HTTP)
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
0 to 1023

43. 3 protocols that operate in the application layer
A. flow control b. session establishment c. numbering and sequencing
A. DNS b. SMTP c. POP
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Logical Link Control sublayer

44. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
A. it has centralized administration b. security is easier to enforce
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 backbone cable.
MAC

45. What type of routing uses information that is manually entered into the routing table?
Destination is not contacted before a packet is sent.
Static
Fiber
The destination host address.

46. What are key considering factors when grouping hosts into common networks?
Network Layer Packet
RJ-45
A. purpose b. geographic location c. ownership
A. low overhead b. connectionless

47. What is the proper order of the OSI Layers?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. HTTP b. HTTPS
SSH

48. 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.
172.16.192.160
No collisions will occur on this link.
Binary ANDing

49. At which layers of the OSI model does ethernet operate?
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. physical layer b. DLL layer
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Network Layer

50. 3 statements of media acess control
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. not affected by EMI of RFI b. most expensive type of LAN cabling
A. DNS b. SMTP c. POP
Show Interfaces