A Windows 2003 server based VPN server is implemented in a company. User faces problem when connecting to VPN server that they are unable to make connection to VPN server and that attempt is failed. Correct user name and password is entered but still connection refused by the VPN server. What can be the cause of such a problem?

How will the administrator of a company secure the DNS zones in Windows server 2003?

 Harry is a network administrator for a company. He has configured shadow copies feature in Windows 2003 server because network users often delete or modify the contents of company's sensitive data. A user complained that when he tries to restore an old version, new version gets deleted. How will Harry guide the user so that current version should not be replaced?

A network consists of domain controllers running on 2000 and 2003. What will happen if one user is logged in two different machines and password is changed in one of them?

How can the administrator improve shadow copies performance?

How many bits would be used as a network ID after subnetting in the class-B address of: 175.12.8.97 255.255.252.0?

TCP,FTP,Telnet,SMTP,POP etc. are examples of?

The flush() method of PrintStream class flushes any uncleared buffers in memory?

Which constructor of DatagramSocket class is used that it creates a datagram socket and binds it with the given Port Number?

Datagram is basically an information but there is no guarantee of its content, arrival or arrival time.

Which classes are used for connection-oriented socket programming?