NETWORKING EVENING PAPER

Paper consists of 3 sections:

section 1: (20 marks)

Q1: given 32 bit hex value, pass it through E/P table. E/P table was not given.

Q2: RSA algorithm. e = 7, p = 5, q = 11. Message in binary = (1000), find plain-text, cipher-text, d, z

Q3: Given 64 bit hex value, pass it through IP table, IP table was given.

section 2: (26 marks)

- configuration of pvlan with example.

- difference between MAC and one way. Hash value

- explain briefly working of ipsec AH and ESP in tunnel and transport mode. support AH in transport and tunnel mode.

- briefly explain the making of digital signature.

- differentiate the following.

- confusion and diffusion

- private key authority and private key certificate

- circuit level gateway and application level gateway firewall

(few more questions,,, i don't remember..)

section 3: (16 marks)

14 mcq's, 2 fill in the blanks

NOTE: Major part of the paper was from IPSEC.

Q no 1.

given input of binary number : 00001111101010100

32 bit in DEs passing from E/p table

Q no 1 a

input :11223344556677

in hexadecimail PASsing from PC-1 given TABLe !

Q no 2.

Digital signature ?? Explain

Q no. 3

RSA LAB Question , n=55 , p=5, q =11, E= 7

message M =(1000) in binary convert into Ciper txt

Q no 4,

difference b/w

Tunnel mode and transparent mode

Q

no 5.

difference b/w MAC and IPsec

Q no 6

breifly explain about

a.message authentication

tunnel mode

ipsec .

Qno 8

configure PVLAN of its step with example .

Q no 9

MCQ of 20 marks

protected ports . pvlan, MD5 ,RSA , IPSEC ,

Arsalan Chishti