a) (i) Intranets
a) Intranets are in-house, tailor-made networks for use within the organization and provide
limited access (if any) to outside services and also limit the external traffic (if any) into the in
tran etc An intranet might have access to the Internet but there will be no access from the
Internet to the organization’s intranet
The main elements of an Intranet are:
• Intranet server hardware
• Intranet server software
• TCP/IP stack software on the clients and servers
• WWW browsers
• A firewall
(ii) Extranets
Extranets (external Intranets) allow two or more companies to share parts of their Intranets
related to joint projects. For example two companies may be working on a common project, an
Extranet would allow them to share files related with the project.
- Extranets allow other organizations, such as suppliers, limited access to the
organization’s network.
- The purpose of the extranet is to increase efficiency within the business and to reduce
costs
(iii) Global system for mobile( GSM) communication
Global system for mobile communication (GSM) is a wide area wireless communications system
that uses digital radio transmission to provide voice, data, and multimedia communication
services. A GSM system coordinates the communication between a mobile telephones (mobile
stations), base stations (cell sites), and switching systems.
(iv) Bluetooth
Bluetooth technology is a wireless protocol that connects electronic devices while they are close
to each another.
Bluetooth technology was designed primarily to support simple wireless networking of personal
consumer devices and peripherals, including cell phones and wireless headsets. Wireless signals
transmitted with Bluetooth cover short distances, typically up to 30 feet (10 meters).
(b) Role of interface message processor (IMP} in a computer network;
- To transfer the message from the host network to other branches within the network
- To defragment the message in the network to protect it from threats such as viruses
Kavungya answered the question on May 14, 2019 at 09:37
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Required:
Examine four advantages of digital data communication...(Solved)
There is a global trend towards the adoption of digital data communication systems as opposed
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Required:
Examine four advantages of digital data communication systems over analog data
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Date posted: May 14, 2019. Answers (1)
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Required:
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area network (LAN) for a client
Required:
i) Identify four network devices that he would use in setting up the LAN.
ii) State six advantages of a LAN.
b) Expound the following acronyms as used in computing:
i) TCP.
ii) FTP.
iii) HTTP.
iv) HTML.
v) WWW.
vi) IP.
Date posted: May 14, 2019. Answers (1)
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Date posted: May 14, 2019. Answers (1)
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b) The surface simplicity of the website is in fact that many individual protocols can be
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b) The surface simplicity of the website is in fact that many individual protocols can be
contained within a single website.
Required
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ii) Describe any four protocols used in the World Wide Web.
iii) Outline four ways of accessing web pages.
Date posted: May 14, 2019. Answers (1)
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Date posted: May 14, 2019. Answers (1)
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Date posted: May 14, 2019. Answers (1)
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Joyce Kubo is a Marketing Manager with Kay Ltd She intends to use her home computer to
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computer might.be infected by computer viruses.
Required:
i) Illustrate any four unusual events that could alert Joyce Kubo of possible computer virus
infection.
ii) Suppose after completing her analysis, Joyce Kubo prepares her results in PDF file format
and posts them to the company's website.
Briefly explain two reasons why Joyce Kubo could prefer the PDF file format.
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Describe four precautions which Joyce Kubo should observe when putting text in
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(ii) Describe three advantages and three disadvantages of adopting hardware firewall.
Date posted: May 14, 2019. Answers (1)
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Date posted: May 14, 2019. Answers (1)
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Date posted: May 14, 2019. Answers (1)
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Date posted: May 14, 2019. Answers (1)
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(i) Serial mode.
(ii) Parallel mode.(Solved)
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Date posted: May 14, 2019. Answers (1)
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Required:
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Date posted: May 14, 2019. Answers (1)
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Date posted: May 14, 2019. Answers (1)
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b) Name six threats to an organization’s information system...(Solved)
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Date posted: May 14, 2019. Answers (1)
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Date posted: May 14, 2019. Answers (1)
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b) State and explain the components of an information system.(Solved)
a) Identify three roles of- information systems in-an. organisation.
b) State and explain the components of an information system.
Date posted: May 14, 2019. Answers (1)