Data Communication & Networking MCQs Set-10

This Portion of Data Communication and Networking contains more frequently asked MCQs (Multiple Choice Questions and Answers) / Objective Type Questions and Answers in the various Competitive Examinations.
 

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1
. In an optical fiber the inner core is ______ the cladding.
  • more dense than
  • the same density as
  • less than dense
  • another name for
2
. The inner core of an optical fiber is _____ in composition.
  • glass or plastic
  • bimetallic
  • copper
  • liquid
3
. Bits can be send over guided and unguided media as analog signal by
  • digital modulation
  • amplitude modulation
  • frequency modulation
  • phase modulation
4
. The radio communication spectrum is divided into bands based on ___________
  • amplitude
  • cost and hardware
  • frequency
  • transmission media.
5
. When a beam of light travels through media of two different densities, if the angle of incidence is greater than the critical angle, ______ occurs.
  • reflection
  • refraction
  • incidence
  • criticism
6
. In a noisy environment, the best transmission medium would be _________
  • twisted pair
  • optical fiber
  • coaxial cable
  • the atmosphere
7
. What is the frequency range used for FM radio transmission?
  • Low frequency: 30 KHz to 300 MHz.
  • Very Low Frequency : 0 Hz to 30 Hz.
  • High frequency : 3 MHz to 30 MHz.
  • Very High Frequency : 30 MHz to 300 MHz.
8
. End-to-end connectivity is provided from host-to-host in _________
  • session layer
  • presentation layer.
  • transport layer
  • network layer
9
. The portion of physical layer that interfaces with the media access control sublayer is called
  • physical signalling sublayer
  • physical data sublayer
  • physical address sublayer
  • none of the mentioned
10
. PSS was introduced in the year ________
  • 1961
  • 1971
  • 1981
  • 1991

 
 
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