a) World Wide Web
This refers to a system with universally accepted standards for storing, formatting and displaying
information in a networked environment. Information is stored as electronic “pages” that contain
text, graphics, animations, sound and video.
i) Protocol:
It refers to a set of communication rules for exchange of information. Protocols define speeds
arid modes for connecting one computer with another computer. An example of communication
protocols is the Open System Interconnection (OSI) set of communication protocols which are
used to identify functions provided by any network and to separate each network function into
seven ‘layers’ of communication roles. . '
ii) Protocols used in World Wide Web
Simple Mail Transfer Protocol (SMTP)-used with the TCP/IP suite. It has traditionally been
limited to the text-based electronic messages.
Transmission Control Protocol/Internet Protocol - are the rules for communicating over the
internet, a message is broken down into small parts called packets before it is sent over the
Internet. HyperText Transfer Protocol-HTTP defines how messages are formatted and
transmitted, and what actions Web servers and browsers should take in response to various
commands FTP (File Transfer Protocol) - allows you to copy files on the Internet or download
where you copy a file from an internet to your computer
(iii) Ways of accessing web pages
1. Search tools: Search tools developed for the Internet help users locate precise
information. The search tools can be accessed from the web.
2. Indexes: These are web directories that have organized information which is in
categories such as education, health etc. the categories are further organization into sub
categories where one can search further until the desired document appears. Such
indexes are Yahoo, Ask etc.
3. Applets and Java: Web pages contain links to special programs called .applets written in
a programming language called Java. Java applets are widely used to add interest and
activity such as interactive games, graphics, animation etc. to a website.
Search engines: This are organized like a database and are also known as web spiders or web
crawlers. These databases are maintained by special programs called agents, bots or spiders.
Widely used search engines are Google, AltaVista and HotBot.
Kavungya answered the question on May 14, 2019 at 09:14
- Distinguish between synchronous and asynchronous data transmission modes.(Solved)
Distinguish between synchronous and asynchronous data transmission modes.
Date posted: May 14, 2019. Answers (1)
- i) Briefly explain the graphical user interface (GUI)
ii) State two reasons why a GUI is considered easier to use than a command line interface(Solved)
i) Briefly explain the graphical user interface (GUI)
ii) State two reasons why a GUI is considered easier to use than a command line interface
Date posted: May 14, 2019. Answers (1)
- Joyce Kubo is a Marketing Manager with Kay Ltd She intends to use her home computer to
connect to the company's network in order to analyse...(Solved)
Joyce Kubo is a Marketing Manager with Kay Ltd She intends to use her home computer to
connect to the company's network in order to analyse sales data but suspects that her home
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.
iii) Suppose Joyce Kubo intends to display her results using a presentation package.
Describe four precautions which Joyce Kubo should observe when putting text in
presentation.
Date posted: May 14, 2019. Answers (1)
- (i) Define the term "network firewall
(ii) Describe three advantages and three disadvantages of adopting hardware firewall.(Solved)
(i) Define the term "network firewall
(ii) Describe three advantages and three disadvantages of adopting hardware firewall.
Date posted: May 14, 2019. Answers (1)
- a) Distinguish between data privacy and data security,
b) Outline three countermeasures to information security threats,(Solved)
a) Distinguish between data privacy and data security,
b) Outline three countermeasures to information security threats,
Date posted: May 14, 2019. Answers (1)
- (i) Define the term "logical topology" as used in computer networks.
(i!) Explain two types of logical topologies.(Solved)
(i) Define the term "logical topology" as used in computer networks.
(i!) Explain two types of logical topologies.
Date posted: May 14, 2019. Answers (1)
- Briefly discuss four advantages of the virtual private network.(Solved)
Briefly discuss four advantages of the virtual private network.
Date posted: May 14, 2019. Answers (1)
- (i)Define the term "protocol" in the context of computer networks.
(ii)Illustrate two types of wireless media necessary when setting up a network.(Solved)
(i)Define the term "protocol" in the context of computer networks.
(ii)Illustrate two types of wireless media necessary when setting up a network.
Date posted: May 14, 2019. Answers (1)
- Explain three modes of data communication and their practical use.(Solved)
Explain three modes of data communication and their practical use.
Date posted: May 14, 2019. Answers (1)
- (i) Define the term "mobile computing”
(ii) Outline five limitations of mobile computing devices(Solved)
(i) Define the term "mobile computing”
(ii) Outline five limitations of mobile computing devices
Date posted: May 14, 2019. Answers (1)
- Analyse the following modes of communication with reference to-cost, speed of transmission
and reliability:
(i) Serial mode.
(ii) Parallel mode.(Solved)
Analyse the following modes of communication with reference to-cost, speed of transmission
and reliability:
(i) Serial mode.
(ii) Parallel mode.
Date posted: May 14, 2019. Answers (1)
- Information systems controls consist of all methods, policies and organizational procedures that
ensure the safety of the organization’s assets, the accuracy and reliability of its accounting
records...(Solved)
Information systems controls consist of all methods, policies and organizational procedures that
ensure the safety of the organization’s assets, the accuracy and reliability of its accounting
records and operational adherence to management standards.
Required:
Describe five types of general information systems controls.
Date posted: May 14, 2019. Answers (1)
- Differentiate between information systems (IS) and information technology (IT).(Solved)
Differentiate between information systems (IS) and information technology (IT).
Date posted: May 14, 2019. Answers (1)
- a) Identify the procedures that could be adopted to control the spread of computer viruses in
an organisation.
b) Name six threats to an organization’s information system...(Solved)
a) Identify the procedures that could be adopted to control the spread of computer viruses in
an organisation.
b) Name six threats to an organization’s information system that could arise as a result of
computer crime.
Date posted: May 14, 2019. Answers (1)
- Identify three vital services which information systems can provide to a business organization.(Solved)
Identify three vital services which information systems can provide to a business organization.
Date posted: May 14, 2019. Answers (1)
- a) Identify three roles of- information systems in-an. organisation.
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)
- Organizations individual use different types of information systems for different purposes.
Describe the characteristics of the following information systems:
i) Transaction processing systems (TPS).
ii) Sales and marketing...(Solved)
Organizations individual use different types of information systems for different purposes.
Describe the characteristics of the following information systems:
i) Transaction processing systems (TPS).
ii) Sales and marketing systems.
Date posted: May 14, 2019. Answers (1)
- a) i) Define the term "information systems
ii) State five types of information systems
b) As the information system manager of a company whose operations are highly...(Solved)
a) i) Define the term "information systems
ii) State five types of information systems
b) As the information system manager of a company whose operations are highly automated,
you have noticed that a large number of employees are suffering from occupational over-use
syndrome otherwise known as repetitive strain injury (RSI)
Identify four measures that you could adopt in order to minimize occupational over-use
syndrome
Date posted: May 14, 2019. Answers (1)
- Explain four security concerns that personal computer users face in an organization.(Solved)
Explain four security concerns that personal computer users face in an organization.
Date posted: May 14, 2019. Answers (1)
- Small and micro-business enterprises have greater access to a variety of information technology
tools that improve productivity such as netbooks, smartphones and cloud computing-based services. However,...(Solved)
Small and micro-business enterprises have greater access to a variety of information technology
tools that improve productivity such as netbooks, smartphones and cloud computing-based services. However, without adequate end point security practices in place, many enterprises
are exposed to both external and internal threats that could cripple their operations.
Identify the end point security threats to small and micro-business enterprises,
Date posted: May 14, 2019. Answers (1)