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Module 3: Network Layer & Routing

20182m

Which of the following is not applicable for IP?
(i) Error reporting
(ii) Handle addressing conventions
(iii) Datagram format
(iv) Packet handling conventions

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Answer: (i) Error reporting

Why: IP itself performs only best-effort delivery — it defines the datagram format, handles addressing conventions (classful/CIDR addressing) and packet handling conventions (fragmentation, TTL, options), but error reporting is not done by IP; it is the job of the companion protocol ICMP, which carries error and control messages (destination unreachable, time exceeded, echo, etc.) inside IP datagrams.

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PreviousApplication layer is implemented on: (i) end systems (ii) NIC (iii) ethernet (iv) route
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