Computer Science - Networking MCQs Part 8

1. A devices that links two homogeneous packet-broadcast local networks, is

A.
gateway

B.
repeater

C.
bridge

D.
hub

E.
None of the above

 Answer Option C

2. A computer that handles resource sharing and network management in a local area network. Select the best fit for answer:

A.
Network Server

B.
Virtual Private Network

C.
Network operating system

D.
OSI

 Answer Option A

3. Repeaters are often used on an 802.3 network to help strengthen the signals being transmitted. As with the length of segments and the number of segments, a limit exists as to how many repeaters can be used between any two nodes. What is the maximum number of repeaters that can be used?

A.
Five

B.
Two

C.
Four

D.
Six

E.
Three

 Answer Option C

4. How much power (roughly) a light-emitting diode can couple into an optical fiber?

A.
100 microwatts

B.
440 microwatts

C.
100 picowatts

D.
10 milliwatts

E.
None of the above

 Answer Option A

5. A modem that is attached to the telephone system by jamming the phone's handset into two flexible receptacles in the coupler?

A.
gateway

B.
bridge

C.
acoustic coupler

D.
time-division multiplexer

E.
None of the above

 Answer Option C

6. With telecommunications and a personal computer you can

A. "download" free public domain programs

B. send letters to be printed and delivered by the post office

C. order goods at a substantial discount

D. All of the above

E. None of the above

 Answer Option D

7. Which of the following statement is correct?

A. Teleprinters are used for printing at remote locations, not for input.

B. Teleprinters are same as teletypes

C. Teleprinters are same as x400

D. Teleprinters have a printer for output and keyboard for input

E. None of the above

 Answer Option D

8. What does 224 translate to in binary?

A. 11110000

B. 00011110

C. 00001111

D. 11100000

E. None of the above

 Answer Option D

9. What can cause a problem with communication with a client by name but not by IP address?

A. The IP address

B. Static files such as an LMHOSTS file or a DNS database

C. Subnet mask

D. The default gateway

E. None of the above

 Answer Option B

10. Layer one of the OSI model is

A. physical layer

B. link layer

C. transport layer

D. network layer

E. None of the above

 Answer Option A

11. What is the term used to describe addresses available on a DHCP server?

A. Pools

B. Scopes

C. Ranges

D. Notes

E. None of the above

 Answer Option B

12. Which of the following signals is not standard RS - 232-C signal?

A. VDR

B. RTS

C. CTS

D. DSR

E. None of the above

 Answer Option A

13. What is the default subnet mask for a class B network?

A. 127.0.01

B. 255.0.0.0

C. 255.255.0.0

D. 255.255.255.0

E. None of the above

 Answer Option C

14. Which of the following files is used for NetBIOS name resolution?

A. HOSTS

B. LMHOSTS

C. ARP

D. FQDN

E. None of the above

 Answer Option B

15. In CRC the quotient at the sender

A. becomes the dividend at the receiver

B. becomes the divisor at the receiver

C. is discarded

D. is the remainder

 Answer Option C

16. How many pairs of stations can simultaneously communicate on Ethernet LAN?

A. 1

B. 2

C. 3

D. multiple

E. None of the above

 Answer Option A

17. The OCR reading unit attached to a POS terminal is called a

A. light pen

B. wand

C. cursor

D. All of the above

E. None of the above

 Answer Option B

18. A protocol is a set of rules governing a time sequence of events that must take place

A. between peers

B. between modems

C. between an interface

D. across an interface

E. None of the above

 Answer Option A

19. The coming together of three technologies i.e. microelectronics, computing and communications has ushered in

A. information explosion

B. information technology

C. business revolution

D. educational upgradation

E. None of the above

 Answer Option B

20. Terminals are used to

A. collect data from the physical system

B. provide information for the manager

C. communicate management decisions to the physical system

D. All of the above

E. None of the above

 Answer Option D

21. Sales persons and other employees of the company who spend much of their time away from their offices but keep in touch with their company's microcomputers or main frame computers over telephone lines are called

A. field workers

B. telecommuters

C. teleprocessors

D. company directors

E. None of the above

 Answer Option B

22. What is the standard protocol for network management features?

A. SNA

B. FTP

C. SNMP

D. SMS

 Answer Option C

23. The application layer of a network

A. establishes, maintains, and terminates virtual circuits

B. defines the user's port into the network

C. consists of software being run on the computer connected to the network

D. All of the above

E. None of the above

 Answer Option C

24. Brad is in charge of a small network and wants to make it simple but secure. The users want to have full control over their data and still be able to share data with the rest of the office. The networking knowledge of the office staff is excellent. Which network(s) would be the best to set up?

A. Peer-to-peer

B. Master domain

C. Server-based

D. Ethernet

E. Share-level

 Answer Option A

25. The simultaneous transmission of data to a number of stations is known as

A. broadcast

B. Band width

C. Aloha

D. Analog transmission

E. None of the above

 Answer Option A

26. Most data communications involving telegraph lines use:

A. simplex lines

B. wideband channels

C. narrowband channels

D. dialed service

E. None of the above

 Answer Option C

27. You have a network ID of 134.57.0.0 with 8 subnets. You need to allow the largest possible number of host IDs per subnet. Which subnet mask should you assign?

A. 255.255.224.0

B. 255.255.240.0

C. 255.255.248.0

D. 255.255.252.0

E. 255.255.255.255

 Answer Option B

28. Modulation is the process of

A. sending a file from one computer to another computer

B. converting digital signals to analog signals

C. converting analog signals to digital signals

D. echoing every character that is received

E. None of the above

 Answer Option B

29. Which multiplexing technique shifts each signal to a different carrier frequency?

A. FDM

B. synchronous TDM

C. asynchronous TDM

D. All of the above

 Answer Option A

30. Which of the following protocol is connection-oriented?

A. IPX

B. UDP

C. NetBEUI

D. TCP

 Answer Option D

31. The loss in signal power as light travels down the fiber is called

A. attenuation

B. propagation

C. scattering

D. interruption

E. None of the above

 Answer Option A

32. Operating system functions may include

A. input/output control

B. virtual storage

C. multiprogramming

D. All of the above

E. None of the above

 Answer Option D

33. Which layer of international standard organization's OSI model is responsible for creating and recognizing frame boundaries?

A. physical layer

B. data link layer

C. transport layer

D. network layer

E. None of the above

 Answer Option B

34. Which of the following might be used by a company to satisfy its growing communications needs?

A. front-end processor

B. multiplexer

C. controller

D. concentrator

E. All of the above

 Answer Option E

35. Different computers are connected to a LAN by a cable and a/an

A. modem

B. interface card

C. special wires

D. telephone lines

E. None of the above

 Answer Option B

36. The Token-Ring architecture was developed for a more efficient way to determine who should be transmitting at any one time. With Ethernet, collisions may take place, causing the transmitting computers to have to retransmit their data. The use of token guarantees that only one computer can transmit at a time. What happens as the network increases in size? Choose the best answer

A. An additional token is added for every 1,000 nodes

B. The speed of the Token-Ring network must be 16Mbps if the number of nodes is greater then 500

C. The network becomes less efficient

D. After the number of nodes exceeds 550, the Multistation Access Unit must be replaced by the more powerful Hyperstation Unified Bandwidth device

E. The network becomes more efficient

 Answer Option E

37. A characteristic of a multiprogramming system is:

A. simultaneous execution of program instructions from two applications

B. concurrent processing of two or more programs

C. multiple CPUs

D. All the above

E. None of the above

 Answer Option B

38. When a host knows its physical address but not its IP address, it can use _____.

A. RARP

B. ARP

C. IGMP

D. ICMP

E. None of the above

 Answer Option A

39. What is the name given to the exchange of control signals which is necessary for establishing a connection between a modem and a computer at one end of a line and another modem and computer at the other end?

A. Handshaking

B. Modem options

C. Protocol

D. Duplexing

E. None of the above

 Answer Option A

40. A communications medium that uses pulses of laser light in glass fibers. Select the best fit for answer:

A. Fiber optic cables

B. Cellular phone systems

C. Telecommunications processors

D. Telecommunications software

 Answer Option A

41. After you have verified that TCP/IP is installed correctly, what is the next step in verifying the TCP/IP configuration?

A. Ping the broadcast address

B. Ping the Microsoft Web site

C. Ping a distant router.

D. Ping the address of the local host

E. None of the above

 Answer Option D

42. Which utility is useful for troubleshooting NetBIOS name resolution problems?

A. NBTSTAT

B. Netstat

C. PING

D. Hostname

E. None of the above

 Answer Option A

43. The EIA-232 interface has _____ pins.

A. 20

B. 24

C. 25

D. 30

 Answer Option C

44. In OSI model, which of the following layer transforms information from machine format into that understandable by user

A. application

B. presentation

C. session

D. physical

E. None of the above

 Answer Option B

45. The channel in the data communication model can be

A. postal mail service

B. telephone lines

C. radio signals

D. All of the above

E. None of the above

 Answer Option D

46. Which of the following is an important characteristic of LAN?

A. application independent interfaces

B. unlimited expansion

C. low cost access for low bandwidth channels

D. parallel transmission

E. None of the above

 Answer Option A

47. Which of the following is a wrong example of network layer:

A. Internet Protocol (IP) ARPANET

B. X. 25 Packet Level Protocol (PLP) - ISO

C. Source routing and Domain naming - Usenet

D. X.25 level 2 - ISO

E. None of the above

 Answer Option D

48. A 2000-character text file has to be transmitted by using a 1,200 baud modem. Can you tell how long will it take?

A. 2 seconds

B. 20 seconds

C. 120 seconds

D. 12 seconds

E. None of the above

 Answer Option B