Techniques Implement to Minimize or Avoid Contention - IT Computer Science Assignment Help

Assignment Task

Task 

Questions
1.Identify three techniques which a switch can implement to minimise or avoid contention. In your answer, you need to briefly and clearly explain how each technique works and how it contributes towards mitigating/arresting contention. (450-550 words)

2. Error handling of IP packets is a slow path operation. Give reasons why it is so. Suggest and briefly explain a way to alter this operation for it to be implemented in the fast path with negligible overheads. [200-250 words]

3. Refer to the 4 × 4 2-D Mesh Interconnection Network shown in the figure below.

a.Illustrate how the XY-routing scheme routes a message from Source S (0, 0) to Destination D (3, 1).
b.Illustrate how the XY-routing scheme routes a message from Source S (3, 1) to Destination D (0, 3).

You must show the sequence of steps taken by the routing  algorithm during the routing process and identify all the intermediate nodes on this routing path between the source and the destination.

4.Consider the 2-Field Classifier consisting of 8 (eight) rules shown below in figure 2. You are required to:

a.Find the best matching rule for the following two prefixes: F1
= 0011 and F2 = 0101 using the Lucent Bit Vector (LBV) scheme.

You must use a bitmap of size 8 (eight) bits for characterizing the rules. Assume the word size to be 4 (four) bits long.

b.Find the best matching rule for the same two prefixes using the Aggregate Bit Vector (ABV) scheme.

5.Consider a 4×4 Hypercube network as shown in figure 3 below. Using the dimension order routing (E-cube routing algorithm), show the sequence of steps to route messages from node (0100) to node (0011). You must identify all the intermediate nodes on this routing path. You must show the sequence of steps taken by the routing algorithm during the routing process and identify all the intermediate nodes on this routing path between the source and the destination.

Note
• Answers must be within the specified word limit. This is an absolute word limit, and no excess will be allowed.
• You must be particularly careful to avoid plagiarising your articles or any other sources of information.
• Answers should all be clear, coherent, and correct, and strictly within the word limits.
• Assumptions (if any) must be stated clearly in your answers.
Remember, there may not be one right answer for some of the questions. Rather, your explanations do need to present your case clearly. The explanations you provide do not have to be long; a concise one is preferred to a rambling one.

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