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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.
Selecting a Risk Control Strategy Risk controls involve selecting one of the 4 risk control strategies for every vulnerability. The flowchart is shown in the figure given below
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Mapping between a hardware address and a protocol address is known Address Resolution. A router or host uses address resolution when it requires to transmit a packet to another dev
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Question: (a) Explain the following security services: Confidentiality, Availability. (b) Which attack will be used to bypass even the best physical and logical security m
Detect each visit to www.google.com that is made by the machine. o Send an alert when an activity relating to network chat is detected. o Send an alert when an attempt is made for
Question: (a) State the strong law of large numbers. (b) Data have been collected on response times (in minutes) at a fire station. The data are 2:7 1:8 0:8 1:4 1:2 (i
implementing password policy in organisation
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