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Q. What do you mean by Substitutional Ciphers?
Substitutional Ciphers
Monoalphabetic Substitution
Polyalphabetic Substitution
- Transpositional - characters retain their plaintext form but change their positions to create ciphertext.
- Text is organized into a two-dimensional table and columns are interchanged according to a key.
- Character frequencies are still preserved, however.
Ethernet Addressing Every station on the network must have a unique physical address Offered by a six-byte physical address encoded on the network interface card (NIC)
What are the Communication tools ? Voice mail ? Email ? Fax ? Video conferencing applications
Switch Generally called as two layer switch . it performs on physical and data link layers. It is a bridge it has many ports that allow better performance. Since
Question: (a) Show the main elements of the GSM system architecture and describe their functions. (b) Looking at the HLR/VLR database approach used in GSM-how does this arc
Token Bus Frame Format No length field Data is able to be much larger (timers prevent hogs) Frame control Ack required? Data vs Control frame and how is
What is BGP (Border Gateway Protocol)? It is a protocol used to promote the set of networks that can be reached within an autonomous system. BGP enable this information to be c
If the host has the subnet ID why do we require a subnet mask?
Q. Why it is essential to have layering in a network? Ans: A computer network is a very complicated system. It becomes very hard to implement as a single entity. The layered ap
How is route table populated by RIP protocol?
INDEPENDENT Loops HPF gives additional opportunities for parallel implementation by using the INDEPENDENT directive to assert that the iterations of a do-loop can be done indep
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