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Posted By: RAFI Member Level: Gold Posted Date: 22 May 2008
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2005 Indira Gandhi National Open University (IGNOU) B.C.A CS-75 : INTRANET ADMINISTRATION, DEC - 2005 Question paper
CS-75 : INTRANET ADMINISTRATION
DEC - 2005
Note: There are six questions in this paper: Question number 1 is compulsory and carries 30 marks. Answer any three from the rest.
1. (a) What is the purpose of the proxy server? How does it provide security in Intranet?
(b) How many class a networks can we have in internet? How does the fragmentation and reassembly of packets take place in Intranet?
(c) What is the difference between Active, Static and Dynamic documents in WWW? How does CGI work?
(d) Which of the following services should be enabled in a secure workstation connected in an Ethernet LAN? Give reasons for your answer.
Anacron, ftp, netfs, telnet, sendmail, SSH, syslog, SNMP time-(Assume the LAN is connected to the internet but is not connected via Firewall nor is Kerberos used).
(e) What is Socket? Write two differences between a TCP Socket and a UDP Socket.
(f) What are the standard port numbers for
(i) Web Server
(ii) Mail Server
(iii) FTP Server
(iv) Telnet
(g) Why is the ARP protocol necessary? What is the significance of the field’s Hardware type, Protocol type and Operation in the ARP Header?
2. (a) On what basis would choose between public key algorithm or symmetric key algorithm in an application? Explain, with the help of an appropriate example, the use of each.
(b) What is network Address translation (NAT)? Give any two advantages and two disadvantages of NAT.
3. (a) What is Search engine? How is it useful for internet / intranet? Give the name of any four Search Engines.
(b) What is an intranet Authority tool? Give the name of any three yool, with their uses.
(c) What is WAP? Give any two advantages and two limitations of WAP. Also explain its layered architecture.
4. (a) Write the main function of the each of the following : Telnet, Rlogin, SSH and RSH.
(b) Explain how a message sent by an application to another application travels on a different network via one or more routers using TCP/IP.
(c) How are PPP and SLIP used in an Intranet? Also write any two differences between them.
(d) How is SSL used to provide Security in an Intranet?
5. (a) Explain the FTP connection mechanism between client and server, with the help of a suitable diagram.
(b) How are SMTP and POP3 servers useful in Internet/Intranet? What is the difference between IMAP and POP3?
(c) What is MIME? What are its various subtypes? Give an example of each subtype.
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