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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.
Question 1 a) Explain how CSMA/CD works. b) Describe the term "exponential back-off". c) Describe the differences between "circuit switching" and "packet switching". d) Th
Attacker's Motives behind the Cyber Attack Before adapting the necessary measures to deal with the problem, understanding and evaluating the blogger's psyche and his motivation
QUESTION (a) (i) Describe Phishing attacks. (ii) Distinguish between Phishing and Spear Phishing attacks. (b) Describe two instances where an attacker sniffing on a netwo
According to the case, The EZ Company introduced a new technology, focusing on the principles of informationintegration and visualization. The company started negotiatinga saleto a
What do you understand by the DNS? Explain the usage of the resource rec or ds. Domain Name System is described below: The Domain Name Service (DNS) is the hierarchi
Proof that the sender forwards the message. It also prohibits the author of the code from falsely denying that he forward the message. This is achieved by record using the exact ti
Problem a) Give the destination IP address, upper layer protocol, TTL in decimal and header checksum in hexadecimal; the source port number and the destination port number in deci
Problem (a) Distinguish between passive and active attacks. (b) Give two reasons why it is important to organise security awareness programs for users. (c) Describe how
Problem 1: List measurable entities on which the quality of service in a data communication network depends Problem 2: Show the features of a typical Network Management
FRAGMENTATION Fragmentation information is kept in different extension header. Every fragment has base header and fragmentation header. Whole datagram including original hea
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