Computer Networks-Engineering-Nov2019 - Grad Plus

Computer Networks-Engineering-Nov2019

B.E. (E & TC)
COMPUTER NETWORKS & SECURITY
(2015 Pattern) (Semester – I)

Time : 2½ Hours
Max. Marks : 70
Instructions to the candidates:
1) Answer Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8, Q.9 or Q.10.
2) Neat diagrams must be drawn wherever necessary.
3) Figures to the right indicate full marks.
4) Assume suitable data if necessary.


Q1) a) Explain basic service set and Extended service set in WLAN? [6M]

b) Write short note on Gigabit Ethernet? [4M]

OR

Q2) a) Draw Bluetooth architecture explain function of different layer in Bluetooth? [6M]

b) Write short note on congestion control? [4M]

Q3) a) Give general format of ICMP and explain different types of error reporting messages used in ICMP? [6M]

b) Compare IPV4 and IPV6? [4M]

OR

Q4) a) Draw and explain IPV6 format? [6M]

b) What is IGMP? How does it used? [4M]

Q5) a) Explain various Transport Layer protocols. [7M]

b) Write short note on IP address and Port number? [6M]

c) Explain Process to Process delivery? [4M]

OR

Q6) a) Enlist and explain SCTP services? [7M]

b) Draw TCP header and explain function of each field? [6M]

c) Draw and explain UDP header in details? [4M]

Q7) a) What are various components of DNS, explain in brief? [5M]

b) Explain URL and operating principal of COOKIES? [6M]

c) Explain types of Web Documents in detail. [6M]

OR

Q8) a) Explain basic functions of Electronic mail. [5M]

b) Write short note on : [6M]
i) FTP,
ii) SNMP.

c) Enlist and explain functions of Network Management System? [6M]

Q9) a) Define cryptography and explain all types of Ciphers? [8M]

b) Generate the Public Key and Secret Key for following prime number using RSA algorithm? P = 3, Q = 11, take E = 5. [8M]

OR

Q10) a) What is SSL? How does it provide security at Transport Layer? [8M]

b) Write short note on : [8M]

i) PGP.

ii) Firewalls.

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