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SIT202 Computer Networks Assignment 2
can you do all numericals in details with a formula
SIT202 Computer Networks Assignment 2 This assignment is worth 15% of your final unit grade. Due on September 9, 2015 (9:00 am) Total: 54 points This assignment is designed to test your understanding of computer networks through problem solving, literature study, simple analysis, and problem solving. IMPORTANT: Assignment Rules and Submission Policy •This assignment is an individual assignment. Discussions are encouraged but copying/plagiarism is not permitted and will be penalized according to university and faculty guidelines. •It should be completed in its entirety (i.e., all questions must be attempted.) •This assignment is marked based on the assignment and rubric requirements. •You are allowed touse up to nine typed pagesto write your ass2 assignment (including references). All margins must be no less than 2 centimeters; a Times New Roman 12 point font and only blackcolorcan be used. Oversized assignments will be penalized. •The submission date for the assignment is Wednesday, September 9, 2015 (9:00 am). •Assignment solution must be well referenced. References must be listed at the end of the assignment and referred to in the assignment text. •Hard-copy and e-mail submissions are not acceptable and will not be marked. Note #1:Students who do not submit by the due date will have their mark reduced. The faculty rule states: Work submitted late without documented approval of the Unit Chair will be penalized. Assignments that are submitted after the submission date will be subject to a mark penalty equal to 10% of the marks per day of the marks available for the piece of work, up to and including three days after the published due date. Assignments submitted more than three days after the published submission date will not be marked. Note #2:All workings must be shown for all mathematic/numerical problems. ASSIGNMENT TASKS Task 1 Suppose you wish to close a bank branch and introduce a teller machine. Your company has won the tender to develop an application-level protocol to be used between an automatic teller machine and a bank’s centralized computer. There are the following requirements that must be satisfied: •Your protocol should allow a user’s card and password to be verified, the account balance (which is maintained at the centralized computer) to be queried, and an account withdrawal to be made. •Your protocol entities should be able to handle the all-to-common case in which there is not enough money in the account to cover the withdrawal. 1
