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Q. Illustrate about RSA Encryption?
RSA Encryption
- Public key encryption technique
- Encryption steps:
- Encode data to be encrypted as a number to create the plaintext P
- Calculate the ciphertext C as C = PKp modulo N
(Divide PKp by N also keep only the remainder)
- Send C as the ciphertext
- Decryption steps:
- Receive C the ciphertext
- Calculate plaintext P = CKs modulo N
- Decode P to the original data
- Choosing Kp, Ks, and N
- Choose 2 prime numbers p and q (large # of digits - 200 or more)
- Calculate N = p * q
- Select Kp so that it is not a factor of (p -1)*(q -1)
- Select Ks so that (Kp * Ks) modulo (p - 1)*(q -1) = 1
Q. Define the Backbone Networks? Backbone Networks - Allows several LANs to be connected - Non of station is directly connected to the backbone - Stations are part
Q. What are the Tools sued for Cryptography and Web Security? Tools - Cryptography VPN - remote access PGP - email Dedicated Circuits -tunnels' - IPSec
The three ways to give login access to the router are by the Console port, auxiliary port, and virtual terminal (Telnet)
Can you Describe IGRP?
Define the term - Handoff and Dynamic configuration Handoff/roaming The MAC protocol used in the wireless LAN should enable mobile stations to move from one cell to anoth
Q. Explain about Nonboundary-Level Masking? Nonboundary-Level Masking Bytes in the IP address that correspond to 255 in the mask will be repeated in the subnet addres
Can you describe PPP packet format?
Reverse Address Resolution Protocol - RARP is ARP's counterpart, but it resolves IP addresses to MAC addresses typically on diskless workstations.
Question : a) Explain why pervasive computing can be termed as a "technology that disappears". b) List and briefly explain four main components of a MOTE used in Wireless
Using a process server (such as inetd or xinetd) to listen on a set of well-popular ports and start one another server. I said that it had much to do with overhead. Say you set u
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