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Q. What is Authentication ?
- Verification of sender's identity.
- Accomplished through a digital signature, which is based on public key encryption/decryption.
- Uses reciprocity of RSA, however secret key is kept by the sender to -sign? the transmission.
Explain the disadvantages of symmetric algorithms?
What are proxy servers and how do they protect computer networks? Proxy servers primarily stop external users who identifying the IP addresses of an internal network. Without i
How is computer networks used in marketing and sales, financial services, teleconferencing? Computer network have led to a new age of all of these services. They have helped in
Advantage of guided media
What are NETBIOS and NETBEUI? NETBIOS is a programming interface that permits I/O requests to be sent to and received from a remote computer and it hides the networking hardwar
Virtual Private Network ( VPNs) When we use the internet or the risks to the security of our data arise. The solve the security problem a virtual private network used for
Explain NetBIOS protocol?
What are firewalls? Firewalls serve to protect an internal network from external attacks. These external threats can be hackers who need to steal data or computer viruses that
What are local variables? Local varaiables are those which are declared within a block of code like methods. Local variables should be initialised before accessing them.
What is the command to copy the IOS image to a TFTP server? Ans) Copy flash tftp
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