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In the layer hierarchy, as the data packet moves from the upper to the lower layers, headers are:
  • a)
    Added
  • b)
    Removed
  • c)
    Rearranged
  • d)
    Modified
Correct answer is option 'A'. Can you explain this answer?
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In the layer hierarchy, as the data packet moves from the upper to the...
As a data packet moves from the upper to the lower layers in the layer hierarchy, headers are added to the packet.
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In the layer hierarchy, as the data packet moves from the upper to the...


Headers in Layer Hierarchy:

Headers in the layer hierarchy are added as the data packet moves from the upper to the lower layers. This process is essential for proper communication and data transmission across the network.

Explanation:


  • Added: When a data packet moves from the upper layers to the lower layers in the network architecture, headers are added at each layer. These headers contain important information such as source and destination addresses, sequence numbers, and other control information required for data transmission.



Importance of Headers:


  • Identification: Headers help in identifying the type of data and the protocol being used for transmission.

  • Routing: Headers contain routing information that guides the data packet through the network to reach its destination.

  • Error Detection: Headers may also include error-checking information to ensure the integrity of the data being transmitted.



Layered Network Architecture:


  • OSI Model: The OSI (Open Systems Interconnection) model defines seven layers, each responsible for specific functions in data communication.

  • TCP/IP Model: The TCP/IP model is another widely used network architecture that consists of four layers - Application, Transport, Internet, and Link layers.



Conclusion:

In conclusion, headers play a crucial role in the layer hierarchy as data packets traverse through different layers in a network. By adding headers at each layer, the necessary information is encapsulated for efficient and reliable communication between devices.
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In the layer hierarchy, as the data packet moves from the upper to the lower layers, headers are:a)Addedb)Removedc)Rearrangedd)ModifiedCorrect answer is option 'A'. Can you explain this answer?
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