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The science and art of manipulating messages in order to create them secure is known as cryptography.....
Two types are:-
Symmetric key cryptography and Asymmetric key cryptography
1) symmetric key cryptography similar key is used for encryption and decryption eg :DES IDEA AES
2) Asymmetric key: public key is used for both encryption and decryption eg: RSA Difere Hellman
Can you define PPTP (Point-to-Point Tunneling Protocol)?
Can you define the concept of Repeaters, Hubs, Bridges, Switches and Routers?
Explain Logical Ring Physical Star topology for Token-Passing Standard. It is definite that any break in the ring at any point will interrupt communications for all machines.
Q. What is Domain Names ? - Full domain name is a sequence of labels separated by dots (.) - Fully competent domain name (FQDN) contains the full name of a host cis.usouthal
In slotted Aloha system, it has been measured that 70% of slots are occupied by frames (i.e. the remaining slots are empty). a) How many frames need to be transmitted, on aver
What is an Ethernet? The Ethernet topology was developed at the University of Hawaii to connect computers on the many Islands. It was radio based design. Later, Robert Metacalf
Error Correcting Code - Hamming Code: Hamming code is the one of the error-correcting code named after its inventor. Because of the simplicity of the hamming code, it can dete
Suppose AES (or any block cipher) is used to encrypt data. Which mode of encryption covered in class is best suited for each of the following two scenarios and why? If more than on
What is the meaning of P-persistent If the medium is idle, transmit with probability p, and delay one time unit with probability (1 - p); if the medium is busy, continue to lis
In connectionless schema, there is no connection required. The source of data includes destination information in data and transmit to the network. Network transmit each data item
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