COMPUTER STUDIES QUESTIONS WITH ANSWERS
State three ways in which ICT can be used in shipping control.
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Explain why telecommuting is not suitable for a doctor when carrying out an operation on a patient.3/1/2021 Explain why telecommuting is not suitable for a doctor when carrying out an operation on a patient.
A lecturer keeps the following student details in a database: name, age, course
(a) write an expression you would use to compute the year of birth of a student using this year as the current year
(b) what query expressions would the lecturer use to list the students whose age is above 15 years and below 25 years? (c) Which expression would the lecturer use to generate? (i) The number of students in the database? (ii) The mean age of the students in the database? (d)Name and describe any two types of database models
RESPONSES
Name and explain the function of the keyboard keys represented by the following symbols2/1/2021 (a) Name and explain the function of the keyboard keys represented by the following symbols (2mks)
(b) Simulation is one of the application areas of computers(a) Explain what the following DOS commands will do when executed
(i) A: \copy ** B
(b) (i) With the aid of a diagram, explain hierarchical (tree) network topology
A network topology that, from a purely topologies viewpoint, resembles an interconnection of star networks in that individual peripheral nodes are required to transmit to and receive from one other node only, toward a central node, and are not required to act as repeaters or regenerators.
Outline two ways in which computer can be used in hotels (2mks)
Define the term artificial intelligence (2 mks)
Artificial intelligence can be defined as the field of study concerned with using computer hardware and software to simulate human thought processes such as imagination and intuition. Arrange the following job titles in the order of their seniority;Database administrator, ICT manager, systems analyst
Either
Give three ways in which horticultural farmers can benefit from the use of information and communication Technology (ICT)
ICT serves as a:
(a) List three application areas of artificial intelligence
List duties of each of the following personnel(a) Database administrator
(b) Data processing manager
​Distinguish between an intelligent terminal and a dumb terminalDumb terminalA computer or communications terminals that has no processing capabilities (has a keyboard and a monitor). Intelligent terminalA computer terminal that has its own processor Related SearchesHow is a point of sale terminal used in a business organization? (2mks)
List two uses of computers in meteorologyList three advantages and three disadvantages of wired communication over wireless communication.31/12/2020 List three advantages and three disadvantages of wired communication over wireless communication.
Advantages
Disadvantages (b) Describe the following signals and state where each is applied in network communication: (i) analog; (ii) digital. (c) Name the two types of coaxial cables, (d) (i) Define the term network protocol. (ii) List four internet protocols.
RESPONSES
(a) Advantages
(ii) Digital: Pulses of electricity. (c)
(ii)
State two advantages of using robots in manufacturing of goods.
(a) Give three examples of network software
(a) What is an expert system (1mk)
A software consisting of knowledge and rules for using it gathered from human experts in a particular occupation e.g. medicine. An expert system has the capability to store the collection of knowledge & manipulate it in response to user inquiries
(b) State any two components of an expert system (2mks)
List three differences between Wide Area Networks (WAN) and Local Area Networks (LAN) (3mks)
List three ways in which computer technology can be used in law enforcement.
Define the following web related terms: Web browser, Hyperlink ,Hypertext document
Define the following web related terms: Web browser, Hyperlink ,Hypertext document
i) Web browser ii) Hyperlink iii) Hypertext document b) List six activities performed on the web c) An institution has ten stand alone computers i) Suggest with reasons the most appropriate topology required to inter-connect the computers. ii) State the necessary steps required to connect the computers to the internet. d) Below is an email address: Name the parts labeled:
a) Define the following web related terms:
i) Web browser A browser is an application program that provides a way to look at and interact with all the information on the World Wide Web. ii)Hyperlink This is the clickable link in text or graphics on a Web page that takes you to another place on the same page, another page, or whole other site. iii) Hypertext document A document usually web document (file) where the user interacts with the whole document using hyperlinks b) List six activities performed on the web
i) Suggest with reasons the most appropriate topology required to inter-connect the computers. a) Bus Reason: Easy to set up, Low cost in terms of cabling QR b)Star Reason: Speed of data transmission is high, Easy to troubleshoot via central hub or switch ii) State the necessary steps required to connect the computers to the Internet.
ggitau @moest. edu.ke Name the parts labeled:
(a) Identify three public Universities and three National polytechnics in Kenya where further computer training is offered, In case state the highest level of qualification that can be acquired in computer training.State two disadvantages of networking
State the function of each of the following: Network interface card, Network protocol and Hub29/12/2020 State the function of each of the following:Network interface card, Network protocol and Hub
a) Network interface card
The diagram below shows four common network topologies A, B, C and D.
i) Name the network topologies labeled a, B, C and D.
ii) Explain what happens if server X in topology A fails. iii) List two problems associated with network topology B. iv) List two disadvantages associated with network topology D. b) Differentiate between Interment and World Wide Web: c) Describe the following network services and identify their applications. i) Voice mail ii) Video conferencing
ANSWERS
i) Name the network topologies labeled A, B, C and A Tree/Hierarchy B Ring C Bus/Multi drop D Star ii) Explain what happens if server X in topology A fails. The terminal connected to X will be affected/stop communicating with the ret of the network iii) List two problems associated with network topology B. Difficult to trouble shoot "- Failure of one terminal results in network breakdown Extra cost of extra NIC card. iv) List two disadvantages associated with network topology D. Failure of central device/server results I total collapse of network Extra cost of cabling as each terminal must be cabled separately to the hub. b) Differentiate between Internet and World Wide Web. The Internet is a massive network of networks, a networking infrastructure. It connects millions of computers together globally, forming a network in which any computer can communicate with any other computer as long as they are both connected to the Internet. Information that travels over the Internet does so via a variety of languages known as protocols. The World Wide Web, or simply Web, is a way of accessing information over the medium of the Internet It is an information-sharing model that is built on top of the Internet The Web uses the HTTP protocol, only one of the languages spoken over the Internet, to transmit data. Web services, which use IfTTP to allow applications to communicate in order to exchange business logic, use the Web to share information. The Web also utilizes browsers, such as Internet Explorer or Netscape, to access Web documents called Web pages that are linked to each other via hyperlinks. Web documents also contain graphics, sounds, text and video. c) Describe the following network services and identify their applications. i) Voice mail Voicemail (or voice matt, voicemail or VMS, sometimes called message bank) is a centralized system of managing telephone messages for a large group of people. In its simplest form it mimics the functions of an answering machine, uses a standard telephone handset for the user interface, and uses a centralized, computerized system rather than equipment at the individual telephone. Voicemail systems are much more sophisticated than answering machines in that they can: Answer many phones at the same time Store incoming voice messages in personalized mailboxes associated with the user's phone number Enable users to forward received messages to another voice mailbox send messages to one or more other user voice mailboxes Add a voice introduction to a forwarded message Store voice messages for future delivery Make calls to a telephone or paging service to notify the user a message has arrived in his/her mailbox Transfer callers to another phone number for personal assistance Play different message greetings to different callers. ii) Video conferencing. A videoconference (also known as a video teleconference) is a set of interactive telecommunication technologies which allow two or more locations to interact via two-way video and audio transmissions simultaneously. It has also been called visual collaboration and is a type of groupware. |
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