III EEE-CS2363-Computer-Networks-important-questions-for-unit-4-unit-5-for-may-june-2014 ANNA UNIVERSITY SEMESTER EXAM

1. DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING
CS2363 - COMPUTER NETWORKS - UNIT 4 & UNIT 5
Year/Semester & Branch: III year /VI Semester & B.E EEE
Max. Marks: 100 Time: 3 hrs
PART-A Answer ALL Questions (10x2=20 Marks)
1. State the advantages of DNS.
2. How is HTTP related to WWW?
3. List multimedia applications.
4. Draw IPSec’s ESP format.
5. What is meant by PGP?
6. What are the roles in Web services using WSDL and SOAP?
7. Define MIB & MIB groups.
8. Give the format of HTTP request message.
9. How is a secret key different from public key?
10. What are all the category group in SIP Protocols?
PART-B Answer ALL Questions (5x16=80 Marks)
11. (a)
(i) Briefly explain simple network management protocol (SNMP). (8)
(ii) Discuss the File Transfer Protocol (FTP) with suitable diagrams. (8)
OR
11. (b) Explain the working of electronic mail. Describe how the SMTP is used in E-mail
applications. (16)
12. (a) Briefly Discuss about the Domain Name System in computer networking. (16)
OR
12. (b)
(i) Short notes on IMAP mail reader operation & IMAP State transition diagram. (8)
(ii) Explain in detail about Diffie-Hellmann Algorithm. (8)
13. (a)
(i) Briefly explain Transport Layer Security over TLS/SSL through HTTP. (8)
(ii) Give short notes on SSH secure system and explain SSH Version-2 Protocols. (8)
OR
13. (b)
(i) Describe how PGP can be used to provide security at the application layer? (8)
(ii) What is IP security? Explain in detail. (8)
14. (a) Discuss the applications of multimedia in audio and video protocols(SDP,SIP,H.323). (16)
OR
14. (b) Briefly explain HTTP(World Wide Web) with example. (16)
15. (a) Briefly Explain Web Services with custom Application Protocols(WSDL,SOAP). (16)
OR
15. (b)
(i) How will you allocate resource to multimedia application? Elaborate with example. (10)
(ii)Short notes on Peer to Peer network. (6)

2. DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING
CS2363 - COMPUTER NETWORKS - UNIT 4 & UNIT 5
Year/Semester & Branch: III year /VI Semester & B.E EEE
Max. Marks: 100 Time: 3 hrs
PART-A Answer ALL Questions (10x2=20 Marks)
1. What is HTTP? Give the format of HTTP response message.
2. Give the Hierarchy of Name servers.
3. How many tuple-fields are in resource records?
4. What is the function of SMTP?
5. Draw timeline diagram of Handshake protocol to establish TLS session operation.
6. Give the SOAP Message Architecture.
7. Write Short notes on FTP with model diagram.
8. What is DNS?
9. How the domain names translated into addresses? Give neat structure of this process.
10. Give five types of HTTP result codes.
PART-B Answer ALL Questions (5x16=80 Marks)
11. (a) Elaborate email services using SMTP,MIME and IMAP. (16)
OR
11. (b) Briefly explain HTTP(World Wide Web) with example. (16)
12. (a) Briefly Explain Multimedia Application protocols(SDP,SIP,H.323). (16)
OR
12. (b)
(i) How will you allocate resource to multimedia application? Elaborate with example. (10)
(ii)Short notes on Peer to Peer network. (6)
13. (a) Briefly Explain Web Services with custom Application Protocols(WSDL,SOAP). (16)
OR
13. (b)
(i) Explain the importance of SNMP with its structure and format. (8)
(ii) Describe briefly the structure, functions and features of File Transfer Protocol. (8)
14. (a)
(i) Briefly explain Transport Layer Security over TLS/SSL through HTTP. (8)
(ii) Give short notes on SSH secure system and explain SSH Version-2 Protocols. (8)
OR
14. (b)
(i) Describe how PGP can be used to provide security at the application layer? (8)
(ii) What is IP security? Explain in detail. (8)
15. (a) Briefly Discuss about the Domain Name System in computer networking. (16)
OR
15. (b)
(i) Short notes on IMAP mail reader operation & IMAP State transition diagram. (8)
(ii) Explain in detail about Diffie-Hellmann Algorithm. (8)
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