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Networks - 3

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Number of Questions: 25
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Tags: Information Technology Computer Networks Data Structure Data Analysis and Algorithm C C++ ASP PHP HTML DBMS Operating System Basic Computer LAN WAN MAN Local Area Networks Hub Repeater Cross Cable Data Communication & Networks Computer Basics MicroProcessor and MicroController
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Videotex is a combination of

  1. Television

  2. Communication

  3. Computer technology

  4. All of the above


Correct Option: D

What is the name of the computer based EMMS that provides a common forum where users can check in at their convenience, post messages, actively exchange ideas and participate in ongoing discussions?

  1. E-mail

  2. Bulletin Board System (BBS)

  3. Tele Conferencing

  4. Video Conferencing


Correct Option: B

What does the acronym ISDN stand for?

  1. Indian Standard Digital Network

  2. Integrated Services Digital Network

  3. Intelligent Services Digital Network

  4. Integrated Services Data Network


Correct Option: B

If communication software can be called the ''traffic cop'' of a micro communication system, what should the modem be called?

  1. Park

  2. Bridge

  3. Interface

  4. Link


Correct Option: B

Usually it takes 10-bit to represent one character. How many characters can be transmitted at a speed of 1, 200 bps?

  1. 10

  2. 12

  3. 120

  4. 1200


Correct Option: C

What is the name of the network topology in which there are bi-directional links between each possible node?

  1. Ring

  2. Star

  3. Tree

  4. Mesh


Correct Option: D

The transfer of data from a CPU to peripheral devices of a computer is achieved through

  1. modem

  2. computer port

  3. interface

  4. buffer memory


Correct Option: B

A 2, 000-character text has to be transmitted by using a 1, 200 baud modem. How long will it take?

  1. 2 seconds

  2. 20 seconds

  3. 120 seconds

  4. 12 seconds


Correct Option: B

What is the commonly used unit for measuring the speed of data transmission?

  1. Byte per second

  2. Baud

  3. Bits per second

  4. Either (2) and (3)


Correct Option: B

Which of the following is/are example(s) of analog communication method?

  1. Laser beam

  2. Microwave

  3. Voice grade telephone line

  4. All of the above


Correct Option: D

Micro-programming is

  1. assembly language programming

  2. programming of microcomputer

  3. control unit programming

  4. macro-programming of micro-computers


Correct Option: C

A distributed data processing configuration, in which all activities must pass through a centre located computer, is called

  1. ring network

  2. spider network

  3. hierarchical network

  4. data control network


Correct Option: B

In OSI model, which of the following layers transforms information from machine format to a format understandable by user?

  1. Application

  2. Presentation

  3. Session

  4. Physical


Correct Option: B

Which layer of OSI determines the interface of the system with the user?

  1. Network

  2. Application

  3. Data-link

  4. Session


Correct Option: B

Which of the following layer protocols is responsible for user and application program support such as passwords, resource sharing, file transfer and network management?

  1. Layer 7 protocol

  2. Layer 6 protocol

  3. Layer 5 protocol

  4. Layer 4 protocol


Correct Option: A

Baseband is

  1. transmission of signals without modulation

  2. a signal whose energy is contained within a finite frequency range

  3. simultaneous transmission of data to a number of stations

  4. all of the above


Correct Option: A

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

  1. broadcast

  2. bandwidth

  3. aloha

  4. analog transmission


Correct Option: A

An error-detecting code inserted as a field in a block of data to be transmitted, is known as

  1. frame check sequence

  2. error detecting code

  3. checksum

  4. flow control


Correct Option: A

The 32-bit internet address 10000 04010 00040 41110 will be written in dotted decimal notation as

  1. 148.20.2.30

  2. 164.100.9.61

  3. 210.20.2.64

  4. 128.10.2.30


Correct Option: D

How many hosts are attached to each of the local area networks at your site?

  1. 128

  2. 254

  3. 256

  4. 64


Correct Option: B

Which of the following is not a standard RS-232C signal?

  1. RTS

  2. CTS

  3. DSR

  4. VDR


Correct Option: D

The network topology that support bi-directional links between each possible node is

  1. ring

  2. star

  3. tree

  4. mesh


Correct Option: D

The data rate of ring is 20 Mbps and signal propagation speed is 200 m/ps. The number of bits that can be placed on the channel of 200 km is

  1. 2, 000 bits

  2. 1 bits

  3. 20, 000 bits

  4. none of these


Correct Option: B

Which of the following functions does a BSC ENQ code perform?

  1. Polls

  2. Bids

  3. Selects

  4. All of the above


Correct Option: D

The mean arrival rate of packets into a packet switch is 1 packet/sec. The mean service rate is 1, 025 packets/sec. The total waiting time, including service time, is ______ sec.

  1. 0.14

  2. 0.04

  3. 0.4

  4. 0.24


Correct Option: B
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