Computer Networks MCQs with answers Page - 30

Here, you will find a collection of MCQ questions on Computer Networks. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Fiber optics posses following properties __________

  • (A) immune electromagnetic interference
  • (B) very less signal attenuation
  • (C) very hard to tap
  • (D) all of the mentioned

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Q. If an Optical Carrier is represented as OC-n, generally the link speed equals(in Mbps) __________

  • (A) n*39.8
  • (B) n*51.8
  • (C) 2n*51.8
  • (D) none of the mentioned

A

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Q. Radio channels are attractive medium because __________

  • (A) can penetrate walls
  • (B) connectivity can be given to mobile user
  • (C) can carry signals for long distance
  • (D) all of the mentioned

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Q. Geostationary satellites ___________

  • (A) are placed at a fixed point above the earth
  • (B) rotate the earth about a fixed axis
  • (C) rotate the earth about a varying axis
  • (D) all of the mentioned

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Q. Bits can be sent over guided and unguided media as analog signal by ___________

  • (A) digital modulation
  • (B) amplitude modulation
  • (C) frequency modulation
  • (D) phase modulation

A

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Q. The physical layer provides __________

  • (A) mechanical specifications of electrical connectors and cables
  • (B) electrical specification of transmission line signal level
  • (C) specification for ir over optical fiber
  • (D) all of the mentioned

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Q. In asynchronous serial communication the physical layer provides ___________

  • (A) start and stop signalling
  • (B) flow control
  • (C) both start & stop signalling and flow control
  • (D) only start signalling

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Q. The physical layer is responsible for __________

  • (A) line coding
  • (B) channel coding
  • (C) modulation
  • (D) all of the mentioned

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Q. Wireless transmission of signals can be done via ___________

  • (A) radio waves
  • (B) microwaves
  • (C) infrared
  • (D) all of the mentioned

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Q. Transmission control protocol ___________

  • (A) is a connection-oriented protocol
  • (B) uses a three way handshake to establish a connection
  • (C) receives data from application as a single stream
  • (D) all of the mentioned

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