Showing posts with label Information Systems. Show all posts
Showing posts with label Information Systems. Show all posts

Saturday, 22 November 2014

Physics Homework: What is the potential difference across the three resistors?

Q) Three resistors, 26, 48, and 76 , are connected in series, and a 0.49 A current passes through them. What is

(a) the potential difference across the three resistors(in V)?

Sol:
Since the resistances are connected in series, the equivalent resistance will be Req = 26+48+76 = 150ohms
Total Voltage, V= I*Req = 150*0.49 = 73.5V
1) Potential difference across 26 = 26*0.49= 12.74V
2) Potential difference across 48 = 48*0.49= 23.52V
3) Potential difference across 76 = 76*0.49= 37.24V


Saturday, 21 May 2011

TechTutorHelp_004


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(3 pages Writeup)
 TCP SYN Flood

 You have created a Web traffic stream between the client and the server nodes.

Answer the following questions

1. Explain how the TCP SYN flood attack works.
2. Explain how SYN cookies work to prevent denial-of-service effect from SYN flood attack?
3. Explain why the amount of legitimate traffic increases during the attack? (hint – if you did tcpdump at the server node-check that).
4. If we remove spoofing from the attack and do the attack without SYN cookies, can you explain what happens? And why it happens? For hints you can think about looking at traffic patterns on the server node.
5. Can you modify the attack in any way so that it is effective without spoofing and how would you do this?
Price 30$) - Contact: businessonline4me@gmail.com
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TechTutorHelp_002

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(6 - 7 pages Writeup)
 1.2. Predict the problems that TSDC would have experienced in the long term without EAM campaign (10marks)
1.3 One of the problems experienced by TSDC was that each major business line operated more or less autonomously, and viewed its IT needs as specialized. Even in areas such as HR and finance. Recommend solutions to the problems outlined above by discussing how hardware, software, and data base management systems could be used in the EAM campaigns
. QUESTION 2 Enterprise software is built around thousands of business processes that reflect best practices. Supply chain planning systems provide information up and down the chain and help everyone involved to do better forecasting while customer relationship management systems gather customer information, from all corners of business, consolidate the information and the provide it to the organization’s customer touch points.
 2.2 Using examples, explain how supply chain planning systems can achieve the following:
• Generate demand forecasts
• Develop sourcing and manufacturing plants
• Share information about changes.
 • Develop better demand planning
• Manage the flow of products through distribution centers and warehouses,
• Coordinate activities with supply chain patners.
• Handle complex inter dependancies among various supply chain processes
• Allow users to balance the costs of transportation delivery and handling (24Marks)

Price 45$) - Contact: businessonline4me@gmail.com



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TechTutorHelp_001

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(8 - 9 Pages Writeup)
Management information Systems
Why business needs should shape IT architecture.
Read the article and answer the following questions.
Explain the ways in which enterprise systems help business achieve operational excellence?
Price 60$) - Contact: businessonline4me@gmail.com

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