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MCQs

Total Questions : 885 | Page 50 of 89 pages
Question 491. An example of digital, rather than analog, communication is
  1.    WATS
  2.    DDD
  3.    DDT
  4.    None of these
  5.    DDS
 Discuss Question
Answer: Option E. -> DDS
Question 492. How many OSI layers are covered in the X.25 standard?
  1.    three
  2.    seven
  3.    None of these
  4.    six
  5.    two
 Discuss Question
Answer: Option A. -> three
Question 493. A band is always equivalent to
  1.    a byte
  2.    16 bits
  3.    100 bits
  4.    None of these
  5.    a bit
 Discuss Question
Answer: Option D. -> None of these
Question 494. What is the port number for HTTP?
  1.    80
  2.    86
  3.    23
  4.    None of these
  5.    99
 Discuss Question
Answer: Option A. -> 80
Question 495. When you connect to an online information service, you are asked to provide some kind of identification such as your name, an account number and a password. What is the name given to this brief dialogue between you and the information system?
  1.    Log-on procedure
  2.    Identification procedure
  3.    Security procedure
  4.    Safeguard procedure
  5.    None of these
 Discuss Question
Answer: Option A. -> Log-on procedure
Question 496. Which of the following medium is used for broadband local networks?
  1.    Coaxial cable
  2.    UTP
  3.    optic fiber
  4.    None of these
  5.    CATV
 Discuss Question
Answer: Option E. -> CATV
Question 497. Bus is
  1.    the condition when two or more stations attempt to use the same channel at the same time
  2.    a continuous frequency capable of being modulated or impressed with a second signal
  3.    a collection of interconnected functional units that provides a data communications service among stations attached to the network
  4.    None of these
  5.    one or more conductors that some as a common connection for a related group of devices
 Discuss Question
Answer: Option E. -> one or more conductors that some as a common connection for a related group of devices
Question 498. In cyclic redundancy checking what is the CRC?
  1.    the quotient
  2.    the remainder
  3.    the divisor
  4.    None of these
  5.    the dividend
 Discuss Question
Answer: Option B. -> the remainder
Question 499. What is the maximum number of entries in the HOSTS file?
  1.    255
  2.    Unlimited
  3.    500
  4.    None of these
  5.    8
 Discuss Question
Answer: Option B. -> Unlimited
Question 500. The basic Ethernet design does not provide
  1.    addressing
  2.    None of these
  3.    automatic retransmission of a message
  4.    access control
  5.    multiple virtual networks
 Discuss Question
Answer: Option C. -> automatic retransmission of a message

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