LAN Switching and Wireless

701. Which of the following primarily uses guided media?

  1. cellular telephone system
  2. local telephone system
  3. satellite communications
  4. radio broadcasting

Correct answer: (B)
local telephone system

702. Which one is not a contiguous mask?

  1. 255.255.255.254
  2. 255.255.224.0
  3. 255.148.0.0
  4. all are

Correct answer: (C)
255.148.0.0

703. Which organization has authority over interstate and international commerce in the communications field?

  1. ITU-T
  2. IEEE
  3. FCC
  4. ISOC

Correct answer: (C)
FCC

704. Which quantization level results in a more faithful reproduction of the signal?

  1. 2
  2. 8
  3. 16
  4. 32

Correct answer: (D)
32

705. Which topology requires a central controller or hub?

  1. Mesh
  2. Star
  3. Bus
  4. Ring

Correct answer: (B)
Star

706. Which topology requires a multipoint connection?

  1. Mesh
  2. Star
  3. Bus
  4. Ring

Correct answer: (C)
Bus

707. While there is (are) only _________ way(s) to send parallel data, there is (are) three subclass(es) of serial transmission.

  1. one; two
  2. two; three
  3. one; three
  4. none of the above

Correct answer: (C)
one; three

708. Why was the OSI model developed?

  1. Manufacturers disliked the TCP/IP protocol suite.
  2. The rate of data transfer was increasing exponentially
  3. Standards were needed to allow any two systems to communicate
  4. None of the above

Correct answer: (C)
Standards were needed to allow any two systems to communicate

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