Question

a) (5pts) List the five layers in the Internet protocol stack, from the top to bottom.

b) (2pts) Why Internet protocols are layered?

c) (3pts) What are the principal responsibilities of Network Layer?

Answer 1

Answer 1-

List the five layers (Internet protocol stack)

1. Application layer (Top →)
2. Transport layer
3. Network layer
4. Data-link layer
5. Physical layer (Bottom →)

Answer 2-

• The OSI organizes a network into a protocol stack, and they are oblivious of issues at some other layer and its delimitate how networking H/W and S/W are to take data and transpose it crossways a network.

Answer 3-

• Basically, Internet layer are responsible for the routing which is used for the moving packets across the network.
• It is also responsible for transferring logical address to physical address.

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