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. In business LANs - which connector is used w/ twisted-pair networking cable?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
RJ-45
Network Layer Packet
A. DB 60 b. Winchester 15-pin c. smart serial

2. When do changes take effect in a Cisco router?
As the commands are entered.
When connecting a host to a switch.
Destination is not contacted before a packet is sent.
Is a layer of specific encapsulation.

3. What causes crosstalk within cable pairs when using UTP?
The destination host address.
Network Layer Packet
The magnetic field around the adjacent pairs of wire.
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

4. During encapsulation - what happens in the Data Link Layer?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. the router will discard the packet b. the router will send a time exceeded message to the source host
The physical address is added.
Rollover cable

5. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
IP Protocol
DNS
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. 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

6. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Network Layer Packet
A. minimizing of collisions b. division into broadcast domains
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

7. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Network address
A. copper UTP b. optical fiber
It does not support encryption.
Physical

8. What does the IEEE 802.2 standard represent in Ethernet technologies?
Network Access
Logical Link Control sublayer
A. it has centralized administration b. security is easier to enforce
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

9. What method of signal transmission uses radio waves to carry signals?
Flash
A. they initiate data exchanges b. they may upload data to servers
Wireless
No collisions will occur on this link.

10. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. enable mode b. priviledge executive mode
Ctrl + Shift + 6
A. DNS b. SMTP c. POP
The MAC protocol can be very simple.

11. What is a characteristic of a single-mode fiber-optic cable?
It uses lasers as the light source.
To facilitate the entry and exit of data on media.
Transport
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

12. What is the primary purpose of ARP?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Hub
Resolve IPv4 addresses to MAC addresses.
Signal loss can be experienced.

13. What is the function of the DLL?
SMB
As the commands are entered.
Minimal delays in data delivery.
It provides for the exchange of data over a common local media.

14. What are the advantages of using a client-server model?
A backbone cable.
A. it has centralized administration b. security is easier to enforce
A. DNS b. SMTP c. POP
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

15. What device can check for faults - integrity and performance of media?
OTDR
0 to 1023
Flash
Host A

16. 2 characteristics of clients in data networks
Create signals that represent the bits in each frame for the media.
A. DNS b. SMTP c. POP
Console
A. they initiate data exchanges b. they may upload data to servers

17. What is a characteristic of a logical point-to-point topology?
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
Supports error detection.
The MAC protocol can be very simple.
A. Physical b. Data Link

18. What is an automated service that matches resource names w/ required IP addresses?
Is used by the server to resolve names.
It has expanded adressing capabilities.
A. copper UTP b. optical fiber
DNS

19. 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. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Host A

20. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
To enable a receiving host to forward the data to the appropriate application.
Transport
Hub
The physical address is added.

21. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
It has expanded adressing capabilities.
Flash
Fiber
A backbone cable.

22. Where is the IOS file stored at?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Source Port
Network Media Control
Flash

23. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
Host mobility
To prevent the receiver from being overwhelmed by incoming data.
A random delay helps prevent the stations from experiencing another collision during transmission.
80 (HTTP)

24. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
It reduces unnecessary broadcasts.
Source Port
The magnetic field around the adjacent pairs of wire.
IP is not properly installed

25. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
A. perform degradation b. security issues c. host identification
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. router b. firewall
255.255.255.0

26. What is the primary function of encapsulating packets into frames?
To facilitate the entry and exit of data on media.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
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
UTP

27. 3 primary functions of the data link layer encapsulation
SMB
2046
Signal loss can be experienced.
A. addressing b. error detection c. frame delimiting

28. 3 features of IPv6
It uses support from the lower layers to distinguish between connections to the service.
A. physical layer b. DLL layer
MAC
A. larger address space b. data types and classes of service c. authentication and encryption

29. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Network Media Control
Destination Network Address
Physical

30. 3 measures of data transfer
Network address
A. goodput b. throughput c. bandwidth
A. HTTP b. HTTPS
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

31. What connectors are commonly associated w/ Cisco's V.35 serial cables?
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
It reduces unnecessary broadcasts.
Host mobility

32. What do you need to use for an initial configuration on a Cisco router?
Console interface
A. minimizing of collisions b. division into broadcast domains
A. it has centralized administration b. security is easier to enforce
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

33. What are 3 common problems w/ large networks?
Router
A. perform degradation b. security issues c. host identification
A. flow control b. session establishment c. numbering and sequencing
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

34. What is the primary rope of the physical layer in transmitting data?
Create signals that represent the bits in each frame for the media.
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. Physical b. Data Link
A. netstat -r b. route PRINT

35. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
Originate data flow.
Physical
Create signals that represent the bits in each frame for the media.
Destination is not contacted before a packet is sent.

36. Statements that describe LAN
A. low overhead b. connectionless
Flash
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
FTP

37. What can get you to an outside network?
Is used by the server to resolve names.
Router(config)# interface FastEthernet 0/1
A default gateway (router).
Network portion

38. What is the primary purpose of Layer 4?
Console interface
It provides for the exchange of data over a common local media.
Identify processes or services that are communicating with end devices.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

39. What is an effect of improperly applying a network cable connector?
Signal loss can be experienced.
A. next-hop b. metric/interface c. destination network address
Time-to-live (TTL)
A. application b. services

40. What is the role of MTA in handling email?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. router b. firewall
A. non-deterministic b. less overhead c. collisions exist
Application Layer

41. 2 characteristics of peer-2-peer
FTP
A. decentralized resources b. resource sharing w/o a dedicated server
Identify processes or services that are communicating with end devices.
A. router b. firewall

42. What is a default gateway address?

43. What are key considering factors when grouping hosts into common networks?
A. purpose b. geographic location c. ownership
It reduces unnecessary broadcasts.
A. servers b. routers c. network printers
Destination is not contacted before a packet is sent.

44. 3 statements about routes and their use
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
It reduces unnecessary broadcasts.
172.16.192.160
The address of the router that the host will use to 'get to the other side'.

45. In a connectionless system - What is correct?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Destination is not contacted before a packet is sent.
Console

46. What is the purpose of the preamble in an ethernet frame?
Network address
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Ctrl + Shift + 6
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

47. 2 features that make switches preferable to hubs
A. low overhead b. connectionless
A. minimizing of collisions b. division into broadcast domains
2046
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

48. 3 factors that should be considered when implementing Layer 2 protocols
Create signals that represent the bits in each frame for the media.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Transport
Rollover cable

49. What is the purpose of the TCP/IP Network Application Layer?
Network Media Control
A. they initiate data exchanges b. they may upload data to servers
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

50. What is PDU?
The packets will be delivered and reassembled at destination.
8
Is a layer of specific encapsulation.
80 (HTTP)