Q.1

Which of the following statements is correct?

  • characteristic of the hub architecture of ARC-net is alternative routing.
  • characteristic of LAN is unlimited expansion
  • characteristic of LAN is low cost access for low bandwidth channels
  • characteristic of the hub architecture of ARC-net is directionalized transmission
  • None of the above
Q.2

Terminals are used to

  • collect data from the physical system
  • provide information for the manager
  • communicate management decisions to the physical system
  • All of the above
  • None of the above
Q.3

The channel in the data communication model can be

  • postal mail service
  • telephone lines
  • radio signals
  • All of the above
  • None of the above
Q.4

Which of the following protocol is connection-oriented?

  • IPX
  • UDP
  • NetBEUI
  • TCP
Q.5

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

  • modem
  • interface card
  • special wires
  • telephone lines
  • None of the above
Q.6

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

  • broadcast
  • Band width
  • Aloha
  • Analog transmission
  • None of the above
Q.7

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?

  • Handshaking
  • Modem options
  • Protocol
  • Duplexing
  • None of the above
Q.8

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

  • The IP address
  • Static files such as an LMHOSTS file or a DNS database
  • Subnet mask
  • The default gateway
  • None of the above
Q.9

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

  • gateway
  • bridge
  • acoustic coupler
  • time-division multiplexer
  • None of the above
Q.10

An internetworking protocol that provides virtual circuit service across multiple X.protocol, is

  • X.75
  • X.25
  • X.400
  • X.21
  • None of the above
Q.11

Which of the following connectivity devices is used to extend a network on a purely mechanical basis?

  • Gateway
  • Switch
  • Router
  • Active hub
Q.12

A modem is connected in between a telephone line and a

  • network
  • computer
  • communication adapter
  • serial port
  • None of the above
Q.13

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

  • Fiber optic cables
  • Cellular phone systems
  • Telecommunications processors
  • Telecommunications software
Q.14

Layer one of the OSI model is

  • physical layer
  • link layer
  • transport layer
  • network layer
  • None of the above
Q.15

Which of the following TCP/IP protocol is used for transferring files from one machine to another?

  • RARP
  • ARP
  • TCP
  • FTP
  • None of the above
Q.16

The IEEEproject of theinvolved further defining the lower two layers of the OSI model. A number of standards were agreed upon during that time. Which of the following is the standard for Ethernet?

  • 802.2
  • 802.3
  • 802.4
  • 802.5
  • 802.6
Q.17

What frequency range is used for TV transmission and low power microwave applications?

  • Very Low Frequency : 3 kHz to 30 kHz
  • Medium Frequency : 300 kHz to 3 MHz
  • Ultra High Frequency : 300 MHz to 3000 MHz
  • Super High Frequency : 3000 MHz to 30000 MHz
  • None of the above
Q.18

Which of the following is an example of bounded medium?

  • Coaxial cable
  • Wave guide
  • Fiber optic cable {d) All of the above
  • None of the above
Q.19

Which of the following digits are known as the terminal number of the Network User Address (NUA)?

  • 5-7
  • 1-4
  • 8-12
  • 13-14
  • None of the above
Q.20

Which of the following statement is correct?

  • Satellite transponders use a higher frequency for reception of radiation from earth stations and lower frequency for transmission to earth stations.
  • Satellite transponders contain a device that echos the radiation without change from one point on earth to another
  • Satellite transponder contain devices that transform the message sent from one location on earth to a different code for transmission to another location
  • satellite transponders us lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations
  • None of the above
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