All Categories of Computer Science


Question: 1. Which properties of HTTP waste bandwidth? What is the additional problem using HTTP/1.0 together with TCP? How does HTTP/1.1 improve the situation?
2. Why is HTTP/HTML not suitable for mobile applications and devices? Describe some approaches that might help wireless access and provide system support for mobile www.
3. What is WAP? Simply describe the functions of each layer in WAP protocol stack. What are major differences between WAP 2.0 and WAP 1.x? What influenced the WAP 2.0 development?

Answer: The Hypertext Transfer Protocol (HTTP) is a stateless application protocol. An HTTP...


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  • Subject: Computer Science
  • Course: Web Development
  • Level: Degree
  • Year: 2nd/3rd
  • Mark: 67%
  • Words: 2725
  • Date submitted: September 17, 2009
  • Date written: Not available
  • References: No
  • Document type: Essay*
  • Essay ID: 2127

Question: 1. Explain, with the help of examples, what is meant by the terms data, information and knowledge, as used within the study of information systems.
Describe the characteristics of good quality information.
2. Information systems are critical to the running of any organisation in modern society.
With the help of examples,
i) define an information system
ii) describe the different categories of computer-based information systems
iii) explain how computer-based information systems can support managers at each level of an organisation
iv) explain some possible reasons why an information system may continually fail to provide the correct level of information

Answer: Information is quite simply data that is processed for a particular purpose....


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  • Subject: Computer Science
  • Course: Information Systems
  • Level: Degree
  • Year: 1st
  • Mark: 61%
  • Words: 1471
  • Date submitted: September 18, 2009
  • Date written: October, 2001
  • References: No
  • Document type: Essay*
  • Essay ID: 2142

Question: 1. This brief description of Cisco mentioned a number of different business processes. Identify at least three of these. For each process, identify several possible performance variables and related measures of performance.
2. Review the chapter’s discussion of integration. Identify three types of integration that seem to apply at Cisco and identify ways in which Cisco might be more integrated than it already is. Also identify any possible personal or organizational downsides to its current degree of integration.

Answer: The main business processes mentioned in the brief on Cisco are identified...


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  • Subject: Computer Science
  • Course: Information Systems
  • Level: Degree
  • Year: 2nd/3rd
  • Mark: 64%
  • Words: 3045
  • Date submitted: October 05, 2009
  • Date written: November, 2004
  • References: Yes
  • Document type: Essay*
  • Essay ID: 2185

Question: 1. UTP-based Ethernet LANs may use an Extended Star topology. Clearly explain what such a topology is. [5 marks]
2. With reference to 100BaseT using Extended Star topology, investigate what recommendations have to be followed in:

a. installing cabling.
b. Connecting nodes and networking equipment such as hubs and switches

Your answer should consider general rules for installing cable, cable lengths, etc. Equipment should include what may, and may not, be connected to segments. [30 marks]
3. Extend Q2., above, to produce a training manual for staff engaged in the design and layout of UTP-based Ethernet LAN’s. [25 marks]
4. Briefly outline network-programming features available in UNIX and Windows-based products. Your answer should consider basic concepts rather than detailed software/ programming. [10 marks]

Answer: The star topology is a type of network where a central node...


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  • Subject: Computer Science
  • Course: Web Development
  • Level: Degree
  • Year: 2nd/3rd
  • Mark: 63%
  • Words: 2561
  • Date submitted: October 05, 2009
  • Date written: April, 2002
  • References: Yes
  • Document type: Essay*
  • Essay ID: 2181

Question: 1. What is the difference between a piconet and a scatternet?
2. Explain why having several independent piconets in a limited area may slow down data transmission rates between bluetooth devices.
3. Explain the difference between ad-hoc mode and infrastructure mode in the context of a WLAN.
4. List the different 802.11b MAC frame formats and describe the purpose of each different format.
5. Explain how both the CSMA/CA and CSMA/CD access methods work. Which of these methods is used with IEEE 802.11b networks? Why?

Answer: A piconet refers to one or more bluetooth devices that connect as...


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  • Subject: Computer Science
  • Course: Computer Science (General)
  • Level: Degree
  • Year: 1st
  • Mark: 60%
  • Words: 1886
  • Date submitted: October 05, 2009
  • Date written: Not available
  • References: Yes
  • Document type: Essay*
  • Essay ID: 2174

Question: A business user wants to move a large database from an old computer to a newer computer, and at the same time, improve his communications. His customers are increasingly requiring the use of electronic data interchange. What would be an appropriate specification of computing and communications hardware and software? Why?

(You do not need to refer to specific products, although you may find it useful to do so.)
(10 marks)

Answer: An appropriate specification of computing hardware would obviously be all that has...


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  • Subject: Computer Science
  • Course: Computer Science (General)
  • Level: Degree
  • Year: 2nd/3rd
  • Mark: Not available
  • Words: 603
  • Date submitted: December 27, 2010
  • Date written: October, 2003
  • References: No
  • Document type: Essay*
  • Essay ID: 3588

Question: A Comparison of Linux File Systems - Co-operative Operating Systems

Answer: Abstract This research paper will present research on various file systems available...


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  • Subject: Computer Science
  • Course: Information Systems
  • Level: Degree
  • Year: 2nd/3rd
  • Mark: 65%
  • Words: 2701
  • Date submitted: September 16, 2009
  • Date written: November, 2003
  • References: Yes
  • Document type: Essay*
  • Essay ID: 2118

Question: A Mobile Application For Banking Processes

Answer: ABSCTRACT The purpose of this project is to discuss the issues associated...


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  • Subject: Computer Science
  • Course: Information Systems
  • Level: Degree
  • Year: 2nd/3rd
  • Mark: 67%
  • Words: 11312
  • Date submitted: September 16, 2009
  • Date written: Not available
  • References: Yes
  • Document type: Essay*
  • Essay ID: 2119

Question: A novice computer user tells that you he wishes to buy a computer. The intended use of the computer is for word processing, email and playing games (including on-line games). What specification of computer should he buy? Why?

(You do not need to refer to specific products, although you may find it useful to do so.) (10 marks)

Answer: I would be sure to advise a novice computer user that, in...


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  • Subject: Computer Science
  • Course: Computer Science (General)
  • Level: Degree
  • Year: 1st
  • Mark: Not available
  • Words: 1599
  • Date submitted: December 27, 2010
  • Date written: Not available
  • References: No
  • Document type: Essay*
  • Essay ID: 3587

Question: Achieving high data rates using TCP/IP over satellite networks can be difficult”- review and discuss some of the reasons TCP/IP has difficulty with satellite links, including the following issues: IP Throughput, IP Time To Live, IP Fragmentation, TCP Throughput and Throughput Expectations, TCP Sequence Numbers, TCP Transmission Window, Slow Start, and Congestion Avoidance.

Answer: Achieving high data rates using Transmission Control Protocol and Internet Protocol (TCP/IP)...


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  • Subject: Computer Science
  • Course: Information Systems
  • Level: Degree
  • Year: 2nd/3rd
  • Mark: 63%
  • Words: 1863
  • Date submitted: August 28, 2009
  • Date written: November, 2002
  • References: Yes
  • Document type: Essay*
  • Essay ID: 2033

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