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MCQs

Total Questions : 885 | Page 36 of 89 pages
Question 351. The transport layer protocol is connectionless.
  1.    UDP
  2.    NVT
  3.    FTP
  4.    TCP
  5.    None of these
 Discuss Question
Answer: Option A. -> UDP
Question 352. Communication between computers is almost always
  1.    None of these
  2.    serial
  3.    direct
  4.    parallel
  5.    series parallel
 Discuss Question
Answer: Option B. -> serial
Question 353. The fundamental requirements of private-to-public network interconnection methods which need to be provided in gateways is/are
  1.    None of these
  2.    A and B both
  3.    universal accessibility for private network Data Terminal Equipment (DTE)
  4.    adequate cost control mechanisms for administration of the private networks
  5.    to assign address to private network DTEs
 Discuss Question
Answer: Option B. -> A and B both
Question 354. When UPC is used, the price of the item is located
  1.    on the item and on the shelf
  2.    in computer storage
  3.    on the shelf and in computer storage
  4.    None of these
  5.    on the item
 Discuss Question
Answer: Option C. -> on the shelf and in computer storage
Question 355. Which of the following is considered a broadband communications channel?
  1.    All of these
  2.    coaxial cable
  3.    fiber optic cable
  4.    microwave circuits
  5.    satellites systems
 Discuss Question
Answer: Option A. -> All of these
Question 356. The difference between a multiplexer and a statistical multiplexer is
  1.    None of these
  2.    Statistical multiplexers need buffers while multiplexers do not need buffers
  3.    Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)
  4.    Multiplexers often waste the output link capacity while statistical multiplexers optimize its use
  5.    Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol
 Discuss Question
Answer: Option B. -> Statistical multiplexers need buffers while multiplexers do not need buffers
Question 357. Which of the following characteristics is not true of NetBEUI?
  1.    Fast for small networks to Self-tuning
  2.    Little configuration required
  3.    Routable
  4.    Highly-customizable
  5.    None of these
 Discuss Question
Answer: Option C. -> Routable
Question 358. You are trying to decide which type of network you will use at your office, and you want the type that will provide communication and avoid collisions on the cable. Which of the following is the best choice?
  1.    Token-Ring
  2.    CSMA/CD
  3.    Ethernet
  4.    ARCnet
  5.    CSMA/CA
 Discuss Question
Answer: Option A. -> Token-Ring
Question 359. Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost.
  1.    KIK (1 + F)
  2.    P I (K + 1)
  3.    1/ (1 - F)
  4.    None of these
  5.    K I (K - P)
 Discuss Question
Answer: Option C. -> 1/ (1 - F)
Question 360. Which of the following network access standard is used for connecting stations to a packet-switched network?
  1.    None of these
  2.    X.3
  3.    X.25
  4.    X.21
  5.    X.75
 Discuss Question
Answer: Option C. -> X.25

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