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What is the maximum size of data that application layer can pass on to the TCP layer below? 
1. Any size
2. (216 bytes - the size of TCP header)
3. 216 bytes
4. 1500 bytes 

1 Answer

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Best answer
Correct Answer - Option 1 : Any size

RFC 1122

Terminology

TCP/IP Layer

Maximum Size (bytes)

OSI Layer

Message

Application layer

Any size

Application Layer

Session

Layer

Presentation Layer

Segment

Transport Layer

1460

Transport Layer

Packet (Fragment)

Internet Layer

1480

Network Layer

Frame

     Link Layer

1500

Data Link Layer

Physical Layer

Explanation:

It's the transport layer responsibility to divide data into fragments/ packets. Application layer is free from it and need not have the size restrictions.
Therefore option 1 is correct

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