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CARRIER SENSE MULTIPLE ACCESS (CSMA)
There is no central access management when computers transfer on Ethernet. For this solution the Ethernet employs CSMA to coordinate transmission across multiple attached devices. CSMA is a coordination function that describe how to lead turns using a shared cable.
A computer listen to the codes i.e. it senses the carrier. If the cable is idle it starts transferring and if the cable is in use then it waits. If simultaneous transmission happens, the frames interfere with each other and this phenomenon is known collision.
PACKETS: Packet is a generic word that define to small code of data. Packet have different format. Each hardware needs different packet format. FRAME: A hardware frame or
There are various benefits related with providing the security. They are given below, (i) Confidentiality/ Privacy (ii) Integrity (iii) Availability (iv)Authenticatio
SECURING THE COMPONENTS Computer can be subject of an attack or the object of an attack. When subject of an attack, computer is used as lively tool to conduct attack. The figure
Question : (a) What do you meant by the term "Bastion Host"? What is its use? (b) "Hostile" Java applets will do undesirable actions. Mention two problems caused by Hosti
Asymmetric Encryption Asymmetric encryption method makes use of two different but related keys and either key can be used to encrypt or decrypt the message. This method is freque
What is Authentication/confirmation? How it is different from the Authorization/approval? Explain in brief different authentication protocols along with their merits and demerit
You are free to design the format and structure of the routing table kept locally by each node and exchanged among neighboring nodes. 1. Upon the activation of the program, each
Internet Protocol IP Gives computer-to-computer communication. Host and receiver addresses are computers. This is also known machine-to-machine communication.
What is information security Information security protects information (and facilities and systems which store, use and transmit it) from a broad range of threats, in order to p
UDP INTERACTION UDP follows four kinds of interaction 1-to-1: One application can interact with one application. 1-to-many: One application can interact with many
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