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MCQs

Total Questions : 885 | Page 44 of 89 pages
Question 431. End-to-end connectivity is provided from host-to-host in:
  1.    Session layer
  2.    Transport layer
  3.    Network layer
  4.    None of these
  5.    Data link layer
 Discuss Question
Answer: Option B. -> Transport layer
Question 432. A form of modulation In which the amplitude of a carrier wave is varied in accordance with some characteristic of the modulating signal, is known as
  1.    Aloha
  2.    None of these
  3.    Amplitude modulation
  4.    Angle modulation
  5.    modem
 Discuss Question
Answer: Option C. -> Amplitude modulation
Question 433. Which of the following digits are known as the area code of the Network User Address (NUA)?
  1.    None of these
  2.    01-Apr
  3.    08-Dec
  4.    13-14
  5.    05-Jul
 Discuss Question
Answer: Option E. -> 05-Jul
Question 434. CSMA (Carrier Sense Multiple Access) is
  1.    a method access control technique for multiple-access transmission media.
  2.    network access standard for connecting stations to a circuit-switched network
  3.    a very common bit-oriented data link protocol issued by ISO.
  4.    None of these
  5.    a method of determining which device has access to the transmission medium at any time
 Discuss Question
Answer: Option A. -> a method access control technique for multiple-access transmission media.
Question 435. The standard suit of protocols used by the Internet, intranets, extranets, and some other networks.
  1.    Protocol
  2.    Open Systems
  3.    Internetwork processor
  4.    Hybrid hub
  5.    TCP/IP
 Discuss Question
Answer: Option E. -> TCP/IP
Question 436. The main difference between synchronous and asynchronous transmission is
  1.    None of these
  2.    the clocking is derived from the data in synchronous transmission
  3.    the pulse height is different.
  4.    the bandwidth required is different
  5.    the clocking is mixed with the data in asynchronous transmission
 Discuss Question
Answer: Option B. -> the clocking is derived from the data in synchronous transmission
Question 437. Which of the following summation operation is performed on the bits to check an error-detecting code?
  1.    None of these
  2.    Coder-decoder
  3.    Codec
  4.    Checksum
  5.    Attenuation
 Discuss Question
Answer: Option D. -> Checksum
Question 438. A communications device that combines transmissions from several I/O devices into one line is a:
  1.    None of these
  2.    multiplexer
  3.    modifier
  4.    full-duplex line
  5.    concentrator
 Discuss Question
Answer: Option B. -> multiplexer
Question 439. Networks that follow the 802.5 standard appear to be in a star topology but are actually operating in what type of topology?
  1.    Linear bus
  2.    Ring
  3.    Modified ring
  4.    Hybrid hub
  5.    Modified star
 Discuss Question
Answer: Option B. -> Ring
Question 440. ARP (Address Resolution Protocol) is
  1.    a TCP/IP high level protocol for transferring files from one machine to another
  2.    a protocol that handles error and control messages
  3.    a protocol used to monitor computers
  4.    a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
  5.    None of these
 Discuss Question
Answer: Option D. -> a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address

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