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 determines the method of media access control?
A. Physical b. Data Link
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. media sharing b. logical topology
80 (HTTP)

2. What is a characteristic of a logical point-to-point topology?
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
It does not support encryption.
Collisions can decrease network performance.
The MAC protocol can be very simple.

3. What kind of problems are caused by excessive broadcast traffic on network segments?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. purpose b. geographic location c. ownership
Collisions can decrease network performance.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

4. What is the role of the OSI Application Layer?
It provides for the exchange of data over a common local media.
Resolve IPv4 addresses to MAC addresses.
A. servers b. routers c. network printers
It provides interface between applications on either end of the network.

5. What are 2 email components used to forward mail between servers?
A. MTA b. SMTP
A. low overhead b. connectionless
A. identifies the communicating applications b. identifies multiple conversations between the hosts
32 bits

6. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
A. Cat5 UTP b. Cat6 UTP
A. MTA b. SMTP
UDP
IP is not properly installed

7. 3 statements of media acess control
A. larger address space b. data types and classes of service c. authentication and encryption
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
To facilitate the entry and exit of data on media.
It provides interface between applications on either end of the network.

8. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
A backbone cable.
Transport
IP is not properly installed
Source and Destination IP address

9. What is an effect of improperly applying a network cable connector?
A. enable mode b. priviledge executive mode
Signal loss can be experienced.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Source and Destination IP address

10. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
The address of the router that the host will use to 'get to the other side'.
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
SMB
255.255.255.0

11. 3 measures of data transfer
A. Cat5 UTP b. Cat6 UTP
A. enable mode b. priviledge executive mode
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. goodput b. throughput c. bandwidth

12. During encapsulation - what happens in the Data Link Layer?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. MTA b. SMTP
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
The physical address is added.

13. What are 2 common characteristics associated w/ dynamic routing protocols?
Network Layer
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Physical
A. non-deterministic b. less overhead c. collisions exist

14. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
Time-to-live (TTL)
UTP
MAC
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

15. Network Protocols
Source Port
Network Layer Packet
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
RJ-45

16. What is a characteristic of a single-mode fiber-optic cable?
The destination host address.
It uses lasers as the light source.
A. performance degradation b. security issues c. host identification
Is used by the server to resolve names.

17. When destination network is not in the routing table - What are 2 actions the router might take?
A. hot keys b. context-sensitive c. command syntax check
A. copper UTP b. optical fiber
Resolve IPv4 addresses to MAC addresses.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

18. What is a disadvantage of Telnet?
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 does not support encryption.
IP is not properly installed
A. Physical b. Data Link

19. To make a console connection from a comp to a Cisco router - what cable should be used?
80 (HTTP)
UDP
Next-Hop Address
Rollover cable

20. Which layer supplies services and allows user interface?
Application Layer
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Source and Destination IP address
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

21. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Switch
Host A
32 bits
The MAC protocol can be very simple.

22. 3 protocols that operate in the application layer
Show Interfaces
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. DNS b. SMTP c. POP
Rollover cable

23. 3 features that allow TCP to realibly and accurately track the transmission of data
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Hub
It uses support from the lower layers to distinguish between connections to the service.
A. flow control b. session establishment c. numbering and sequencing

24. Statements that describe LAN
SSH
Supports error detection.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Originate data flow.

25. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Fiber
172.16.192.160
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
2046

26. What type of network cable is used between a terminal and a console port?
As the commands are entered.
No collisions will occur on this link.
Rollover cable
A. minimizing of collisions b. division into broadcast domains

27. 3 factors that should be considered when implementing Layer 2 protocols
Destination is not contacted before a packet is sent.
A. copper UTP b. optical fiber
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
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

28. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
Time-to-live (TTL)
They must wait until the first hosts finish transfering the media.
0 to 1023
DNS

29. 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.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
UTP
Minimal delays in data delivery.

30. What device can check for faults - integrity and performance of media?
Collisions can decrease network performance.
A. netstat -r b. route PRINT
OTDR
255.255.255.0

31. What does the IEEE 802.2 standard represent in Ethernet technologies?
It provides for the exchange of data over a common local media.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Logical Link Control sublayer
A backbone cable.

32. Default Gateway is incorrect on the host - What is the impact on the communications?
172.16.192.160
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Identify the device that allows local network computers to communicate w/ devices in other networks.
Identify processes or services that are communicating with end devices.

33. What describes the purpose of default route?
TCP initializes the sequence numbers for the sessions.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. application b. services
RJ-45

34. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
Minimal delays in data delivery.
When connecting a host to a switch.
Ctrl + Shift + 6
UDP

35. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
80 (HTTP)
Application Layer
Flash
A. Physical b. Data Link

36. What are 3 common problems w/ large networks?
Destination Network Address
32 bits
A. DB 60 b. Winchester 15-pin c. smart serial
A. perform degradation b. security issues c. host identification

37. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Binary ANDing
Transport
Network portion
Minimal delays in data delivery.

38. What can get you to an outside network?
A default gateway (router).
Host A
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Show Interfaces

39. After an ethernet collision - which device has priority to transmit data?
Any device whose backoff timer expires first.
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
Identify processes or services that are communicating with end devices.
A. copper UTP b. optical fiber

40. What are 2 forms of application layer software?
A. application b. services
172.16.192.160
Static
IP Protocol

41. What connectors are commonly associated w/ Cisco's V.35 serial cables?
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
To enable a receiving host to forward the data to the appropriate application.
A. DB 60 b. Winchester 15-pin c. smart serial
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

42. What networking devices are recommended to be assigned static IP addresses?
A. application b. services
A. servers b. routers c. network printers
A. media sharing b. logical topology
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

43. 3 statements about routes and their use
IP Protocol
A. MTA b. SMTP
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
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

44. What do you need to use for an initial configuration on a Cisco router?
A backbone cable.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. servers b. routers c. network printers
Console interface

45. What makes fiber preferable to copper for interconnecting buildings?
Transport
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Supports error detection.
Router

46. 3 characteristics of valid Ethernet Layer 2 addresses
A. copper UTP b. optical fiber
To enable a receiving host to forward the data to the appropriate application.
A. minimizing of collisions b. division into broadcast domains
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

47. Which characteristics describe fiber optic cable?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. enable mode b. priviledge executive mode
IP is not properly installed
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

48. Important characteristic of UDP
Originate data flow.
A. DB 60 b. Winchester 15-pin c. smart serial
Transport
Minimal delays in data delivery.

49. What is the function of the DLL?
It provides for the exchange of data over a common local media.
Application Layer
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
The physical address is added.

50. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Twisting of the cables
Hub
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
Physical