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Hashing is the transformation of a string of characters into a generally shorter fixed-length key or a value that presents the original string. Hashing is used to index and retrieve values in a database because it is faster to search the item using the shorter hashed value than to search it using the original value. It is also used in many encryption operations.
what is guided media or unguided media
QUESTION: (a) Explain, with the aid of a diagram, a Star topology of a network of your choice. (b) Illustrate on the use of a MAN and give an example of one. (c) Describe
GROWTH OF LAN TECHNOLOGY The production of shared communication channels (LANs) started in 1960s and early 1970. The basic idea behind was to reduce the number of connectio
Problem: (a) Assume that a new application layer protocol is developed for video conferencing application. Which transport layer protocol, between TCP and UDP, will you u
a) determine the RTT (round trip time) between a client requesting a web page of 1024 bytes in size from an internal web server on a 100 Base-T Ethernet. Assume a one-way propagati
Q. Attacks on wireless network WSN are vulnerable to attacks which compromise the integrity of the WSN nodes by decreasing the nodes' fault tolerance capabilities, data distrib
PARITY BIT: A parity bit is an extra bit transmitted with data item select to give the resulting bit odd or even parity. For example an even parity data packet 10100001 has p
a) Calculate the CRC for the frame below: Frame: 1101011011 Generator: 10011 Message after appending 4 zero bits: 11010110110000 b) OSI refers to a system in which any
How to check Network working
attacks on crytography
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