Networking - Interview Questions and Answers


  1. What is WDM?
    WDM is conceptually the same as FDM, except that the multiplexing and demultiplexing involve light signals transmitted through fiber optics channel.
  2. What is TDM?
    TDM is a digital process that can be applied when the data rate capacity of the transmission medium is greater than the data rate required by the sending and receiving devices.
  3. What is Synchronous TDM?
    In STDM, the multiplexer allocates exactly the same time slot to each device at all times, whether or not a device has anything to transmit.
  4. List the layers of OSI
    a. Physical Layer
    b. Data Link Layer
    c. Network Layer
    d. Transport Layer
    e. Session Layer
    f. Presentation Layer
    g. Application Layer
  5. Which layers are network support layers?
    a. Physical Layer
    b. Data link Layer and
    c. Network Layers
  6. Which layers are user support layers?
    a. Session Layer
    b. Presentation Layer and
    c. Application Layer

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