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QUESTION:
(a) Ethernet has grown in popularity in the recent years and is now used in LANs. Give three reasons for the success behind Ethernet.
(b) Ethernet uses the CSMA/CD multiple access protocol. Describe the features behind CSMA/CD.
(c) A bridge is a link layer device that stores and forwards Ethernet frames. One of its characteristics is that a bridge is self-learning. Bridges also do not offer protection against broadcast storms.
(i) Show, by means of a diagram, how a bridge learns.
(ii) Explain what is a broadcast storm is and how it can take place.
(d) Briefly describe the difference between store-and-forward and cut-through switches. Also, store-and-forward switches have an advantage over cut-through switches with respect to damaged frames. Explain what it is.
Question: (a) Data on four variables are stored in a file called file1.dat. The first line of the file is the variable names f, x, y and z. Give the R commands to (i) read t
Five years ago, Calgary Kids' Cloth Ltd was just a small retail store in downtown Calgary. The company started their own factory in SE Calgary to produce outdoor clothes for kids.
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implementing password policy in organisation
IDS Deployment Overview The decision regarding control strategies, decisions about where to locate elements of intrusion detection systems is an art in itself. Planners should s
Question: (a) What is the minimum length of a password that could be considered to be "strong" in the context of today's computing power? (b) The security of a PIN system,
(a) Consider the subsequent authentication options: A. Using password. B. Using pin and fingerprint Which option A or B provides stronger security and why? (b) Give
Question 1 Explain any two types of security policies Question 2 What is security attack? Explain with examples Question 3 Explain different characteristics that i
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