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Explain the importance of authentication.
Authentication is the method of verifying a user's credentials before he can log into the network. It is normally performed using a username and password. This gives a secure means of limiting the access from unwanted intruders on the network.
how to own cipher to encrypt and decrypt message by combine both substitution ans transposition algorithm using c program
Explain the meaning of Disassociation A notification from either a station or an AP that an existing association is terminated. A station should provide this notification befor
Q. What is Subnetting ? Subnetting IP addressing is hierarchical First reach a device through its network id (netid) Then reach the host itself using the se
Question: (a) Suppose that you are a communication engineer and you have to construct a mobile telephone network with bandwidth W = 4.2 MHz in each link. The data rate is
Deadlock Avoidance To avoid deadlocks two types of strategies are used: 1) Static prevention: It uses V and P operators and Semaphores to allocate and deallocate shared res
ICMP is used to send error and control messages. Ping uses ICMP to carry the echo-request and echo-reply.
There are many types of servers:- a) File servers b) Database servers c) Transaction servers d) Groupware servers e) Object servers Web servers.
What is Daemon A daemon is a UNIX background process that implements the server side of a protocol. Daemons are unique to UNIX. For example, FTP stands for the File Transfer
Process Switching It applies the brute force method to switch packets wih consumption of large amount of CPU time List of items are needed when switching packets Routing
What are the concerns of the Physical Layer? Physical layer coordinates the functions needed to transmit a bit stream over a physical medium. a. Physical characteristics of in
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