13.
14.
15.
16.

18.
19.

20.
21.

102810

2 C 20518

Section B

Answer atleast five questions.

Each question carries 5 marks.

All questions can be attended.
Overall ceiling 25.

Explain responsibilities of transport layer and network layer in OSI model.
Explain circuit switching in detail.
Define random access and list protocols in this category.
Explain Address Mapping in detail.
Explain UDP in detail.
Give a detailed explanation about RSA Digital Signature Scheme.
Explain substitution and transposition method of symmetric key cipher.
(5 x 5 = 25 marks)
Section C

Answer any one questions.
Each question carries 11 marks.

Give a detailed explanation about CRC.
Explain Link State Routing.

(1 x 11 = 11 marks)

102810