Answer Posted / muniganti mahesh

firewall is an software that uses for security purpocelse of private networks.firewall block the Unauthorised user from private networks and unauthorised webusers from the Internet. firewall I s a defence security sensitive information.

Explain the following ARQ techniques in detail 1. Stop and wait ARQ 2. Selective repeat ARQ

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What is tdm?

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hi , can you Suggest me the books (with author names) to learn Network programming from basics. Thanks in Advance... Prakash

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What is Mail Gateway

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Write two ways in which computer applications differ from network applications ?

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what is Voltage levels of rs232x?

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Explain ATM reference model.

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What is the baud rate of a standard 10 mbps Ethernet LAN ?

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Does Ethernet 10Gbps support multiple access

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What are the two reasons for using layered protocols?

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1. What ports does FTP traffic travel over? 2. What ports does mail traffic utilize? 3. What ports do HTTP and HTTPS use? 4. Why is NTP required in an NFS network? 5. Name some common mal software on the server side 6. What is CPAN? How do you access it? 7. What is PEAR? 8. What advantages does mod_perl have over a perl CGI? 9. What is required to do SSL in Apache 1.x? 10. What is Tcl? 11. What is a servlet engine/container? 12. What is BIND? 13. Name the steps to setup a slave zone in BIND 14. Name the steps to setup a primary zone in BIND 15. What commands would you use under Solaris or Linux to modify/view an LDAP tree?

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Differentiate between SMTP and SNMP

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What is silly window syndrome

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what is the command to check how many port numbers are running with their specific protocols in linux pc

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Explain Salient difference between ISO-OSI and TCP/IP models.

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