Question

List the advantages of connection oriented services over connectionless services.

Answer 1

Advantages of Connection-oriented services –

(i)In connection-oriented virtual circuits, buffers can be reserved in advance.

(ii)Sequencing can be guaranteed.

(iii)Short-headers can be used.

(iv)Troubles caused by delayed duplicate packets can be avoided.

Advantages of Connectionless services–

(i)It can be used over subnets that do not use virtual circuit inside.

(ii) No circuit set-up time required.

(iii)It is highly robust in the face of router failures.

(iv)It is best for connectionless transport protocols because it does not impose unnecessary overhead.