Basic CS-Networks [TCS Placement]: Sample Questions 31 - 32 of 133

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Question 31

Networks
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Describe in Detail

Essay▾

What is FDM?

Explanation

  • FDM is an analog technique used when the bandwidth of a link is greater than the combined bandwidths of the signals to be transmitted.
  • Frequency Division Multiplexing uses frequencies to combine many streams of data for sending signals over a medium for communication purpose.
  • Carries frequency to each data stream and later combines modulated frequencies to get complete transmission.
  • Television Transmitters use FDM to broadcast many channels at the same time.
Given the Image is Define the Frequency Division Multiplexing (FDM)

Question 32

Networks
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Describe in Detail

Essay▾

What is the range of addresses in the classes of internet addresses?

Explanation

  • With an IPv4 IP address, there are five classes of available IP ranges: Class A, Class B, Class C, Class D and Class E, while only A, B, and C are commonly used.
  • Each class allows for a range of valid IP addresses, shown in the following table.
    Table of the Range of Valid IP Addresses
    ClassAddress RangeSupports
    Class ASupports millions hosts on each of networks.
    Class BSupports hosts on each of networks.
    Class CSupports hosts on each of million networks.
    Class DReserved for multicast groups.
    Class EReserved for future use, or research and development purposes.
  • Ranges . x. x. x are reserved for the local host.
  • For example, is the loopback address.
  • Range broadcast to all hosts on the local network.

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