NALANDA OPEN UNIVERSITY QUESTION, 2012, M.C.A, Part-II, Paper-XVII (Operating system Concepts and Networking Management)

NALANDA OPEN UNIVERSITY QUESTION, 2012, M.C.A, Part-II, Paper-XVII (Operating system Concepts and Networking Management)

                                                               
                                                                                2012
                                                                       Time: 3 hours
                                                                      Full Marks: 80
                                    Answer any five questions. All questions carry equal marks.

1. What is the purpose of a directory service in window 2000 ? How does a domain differ from a workgroup.

2. When do DCHP clients try to renew their leases? Explain File Replication service and Distributed File system.

3. How many built- in groups are there in windows-2000. Explain Virtual Networks and Remote Networking.

4. Explain different types of communication in LINUX? give some commands to carry out these communication in LINUX.

5. Draw a diagram of SNMP architecture and show how it is used to manage network devices. What is the purpose of distributed file system? List the four computer system vulnerabilities.

6. Discuss the various criteria for selecting a UPS for your system. Discuss and list the output of following LINUX  commands:-
    (i) who
    (ii) chmod
    (iii) ls-a
    (iv) pwd

7. With help of a diagram, explain the windows 2000 layered structure. What do you understand by a fault tolerant system? Explain.

8. List any three recent computer security failures. Discuss various security systems and facilities.

9. List advantages and limitations of firewall. Describe backup strategies for your system. Explain different types of malicious code.

10. Write short notes on any three:
      (i) Domain Controller
      (ii) Active Directory
      (iii) User Authentication Management
      (iv) Cryptography