COMPUTER STUDIES
THE CENTRAL PROCESSING UNIT IS CONNECTED TO THE
A. expansion boards B. expansion slots C. memory chip D. mother board ✓ E. system unit The central processing unit (CPU) is a crucial component of a computer system that performs most of the processing inside a computer. It is directly connected to…
ARTIFICIAL INTELLIGENCE
Definition of AI AI stands for Artificial Intelligence, which refers to the simulation of human intelligence in machines that are programmed to perform tasks that would typically require human cognitive abilities such as learning, problem-solving, decision making, and pattern recognition.…
FUNDAMENTALS OF ROBOTICS
Definition of Robotics Robotics refers to the interdisciplinary field of science and engineering that deals with the design, construction, operation, and application of robots. A robot is a machine that can be programmed to perform various tasks autonomously or under…
DATA REPRESENTATION
Data Representation refers to the methods used internally to represent information stored in a computer. Computers store lots of different types of information: numbers. text. graphics of many varieties (stills, video, animation). sound. Computers use numeric codes to represent all…
PRESENTATIONS USING POWERPOINT
PowerPoint is an application software package that allows you to create, print and show presentations. When you are giving a presentation, your main aim is to get key points across to your audience, in a way that allows them to…
PRESENTATION PACKAGE
Presentation software or presentation package is an effective multimedia tool as it combines text, sound, images and video on one or more slides. Presentation packages are used to create presentations, quizzes, information points and many more multimedia products. Most presentation…
WORD PROCESSING
Word processing is the use of computer to create,edit, and print documents. Of all computer applications, word processing is the most common. To perform word processing, you need a computer, a special program called a word processor, and a printer.…
INTRODUCTION TO GRAPHIC PACKAGES
Graphic packages are those programs that allow artiste and computer users to use computers to create, edit, display and print graphic images. A graphics package is an application that can be used to create and manipulate images on a computer.…
INTRODUCTION TO MICROSOFT ACCESS
Microsoft Access is a Relational Database Management System (RDBMS), designed primarily for home or small business usage. Access is known as a desktop database system because it is functions are intended to be run from a single computer. This is…
CRUD AND ACID
CRUD In computer programming, CRUD is an acronym for create, read, update and delete which are the four basic functions of persistent storage. It is also sometimes used to describe user interface conventions that facilitate viewing, searching, and changing information;…
STRUCTURED QUERY LANGUAGE
Structured Query Language (SQL) is a special-purpose programming language designed for managing data in relational database management systems (RDBMS).Originally based upon relational algebra and tuple relational calculus, its scope includes data insert, query, update and delete, schema creation and modification,…
FORMS OF DATABASE ORGANIZATION
There are four structural types of database management systems: hierarchical, network, relational, and object-oriented. 1) Hierarchical Database: A hierarchical database model is a data model in which the data is organized into a tree-like structure. The structure allows representing information…
DATABASE MANAGEMENT PACKAGES
A database management package or database management system (DBMS) is a software package used to set up, or structure, a database. It is also used to retrieve information from a database. The top part of the figure is a menu.…
INTRODUCTION TO DATABASE
A database is a set of data that has a regular structure and that is organized in such a way that a computer can easily find the desired information. Data is a collection of distinct pieces of information, particularly information…
COMPUTER CABLES AND CONNECTORS
A power cable is an assembly of two or more electrical conductors, usually held together with an overall sheath. The assembly is used for transmission of electrical power. Printer cable refers to the cable that carries data between a computer…
WIRELESS NETWORK OBJECTIVE QUESTIONS
1) DSL is an example of a(n) _ a) connection. b) network. c) wireless. d) broadband. 2) Which of the following is not a disadvantage of a wireless LAN? a) Slower data transmission. b)…
COMPUTER SECURITY AND ETHICS OBJECTIVE QUESTIONS
1) All of the following are examples of real security and privacy risks EXCEPT: a) Hacker. b) Spam. c) Viruses. d) Identity theft. 2) Technology no longer protected by copyright, available to everyone, is considered…
NETWORK CONNECTORS
In information science, connectors, normally called “input-output connectors” (or I/O for short), are interfaces for linking devices by using cables. They generally have a male end with pins protruding from it. This plug is meant to be inserted into a…
HIGH LEVEL LANGUAGES OBJECTIVE QUESTIONS
1) The steps and tasks needed to process data such as responses to questions or clicking an icon are called: a) instruction. b) the operating system. c) application software. d) the system unit. 2) C,…
BASIC PROGRAMMING 3 OBJECTIVE QUESTIONS
1) How many return statements are allowed in a Function Procedure? a) 1. b) 3. c) 2. d) There is no limit. 2) Which method will return the number of elements in an array? a)…
NETWORK CABLES
INTRODUCTION Cable is the medium through which information usually moves from one network device to another. Networking cables are used to connect one network device to other network devices or to connect two or more computers to share printer, scanner…
WORLD WIDE WEB OBJECTIVE QUESTIONS
1) The difference between people with access to computers and the internet and those without this access is known as the: a) digital divide. b) internet divide. c) web divide. d) broadband divide. 2) A…
NETWORKING OBJECTIVE QUESTIONS
1) With respect to a network interface card, the term 10/100 refers to _ a) protocol speed. b) a fiber speed. c) megabits per seconds. d) minimum and maximum server speed. 2) Frames from one…
ELECTRONIC MAIL
INTRODUCTION Electronic mail also known, as e-mail is a means of a computer based communication in which an electronic letter is sent to one or more recipients. It involves basically an e-mail address that identifies the receiver and making it…
CPU OBJECTIVE QUESTIONS
1) The motherboard is the _ a) circuit board that houses peripheral devices. b) same as the CPU chip. c) the first chip that is accessed when the computer is turned on. d) circuit board that contains…
INTERNET OBJECTIVE QUESTIONS
1) If you want to connect to your own computer through the Internet from another location, you can use: a) e-mail. b) FTP. c) instant message. d) Telnet. 2) An e-mail address typically consists of…
BASIC PROGRAMMING 2 OBJECTIVE QUESTIONS
1) The proper operator precedence, from first to last, is: a) logical, comparison and arithmetic. b) arithmetic, comparison and logical. c) arithmetic, logical and comparison. d) comparison, arithmetic and logical. 2) Which statements are optional…
ALGORITHMS AND FLOWCHART OBJECTIVE QUESTIONS
1) The step-by-step instructions that solve a problem are called _ a) an algorithm. b) a list. c) a plan. d) a sequential structure. 2) Algorithm and flow chart help us to _ a) know…
COMPUTER SECURITY AND ETHICS
INTRODUCTION TO COMPUTER SECURITY Computer security is the process of preventing and detecting unauthorized use of your computer. Prevention measures help to stop unauthorized users also known as intruder from accessing any part of your computer system. Detection helps to…
PROGRAM DEVELOPMENT OBJECTIVE QUESTIONS
1) Programs are executed on the basis of a priority number in a _ a) batch processing system. b) multiprogramming. c) time sharing. d) none of the above. 2) Problem analysis is down during _…
CENTRAL PROCESSING UNIT
CPU is an acronym for a central processing unit, which is considered to be the brain of a computer. The part of a computer that interprets and carries out instructions provided by the software. It tests and manipulates data, and…
SYSTEMS DEVELOPMENT CYCLE OBJECTIVE QUESTIONS
1) System Study involves a) study of an existing system. b) documenting the existing system. c) identifying current deficiencies and establishing new goals. d) All of the above. 2) What is the first stage in…
BOOTING AND REBOOTING
BOOTING In computing, booting is the initial set of operations that a computer system performs when electrical power to the CPU is switched on. The process begins when a computer is turned on for the first time or is re-energized…
HANDLING COMPUTER FILES OBJECTIVE QUESTIONS
1) Each of the data files as a _ that describe the way the data is stored in a file. a) file structure. b) records. c) fields. d) database. 2) An operation that will increase…
APPLICATION AREAS OF ICT
ICT is an acronym that stands for Information and Communications Technology. A good way to think about ICT is to consider all the uses of digital technology that already exist to help individuals, businesses and organisations use information. ICT covers…
CONCEPT OF COMPUTER FILES OBJECTIVE QUESTIONS
1) A file extension is separated from the main file name with a(n) _ but no spaces. a) question mark. b) exclamation mark. c) underscore. d) None of the above. 2) A collection of interrelated…
INFORMATION SYSTEM
An information system is a collection of methods, practices, algorithms and methodologies that transforms data into information and knowledge desired by and useful for, individual and group users in organizations and other entities. This system can involve a combination of…
COMPUTER DATA CONVERSION OBJECTIVE QUESTIONS
1) _ bits equal one byte. a) Eight. b) Two. c) One thousand. d) One million. 2) The binary language consists of _ digit(s) a) 8. b) 2. c) 1,000. d) 1.…
DATA NETWORK
A data network is an electronic communications process that allows for the orderly transmission and receptive of data, such as letters, spreadsheets, and other types of documents. What sets the data network apart from other forms of communication, such as…
TELECOMMUNICATIONS
Telecommunications, also called telecommunication, is the exchange of information over significant distances by electronic means. A complete, single telecommunications circuit consists of two stations, each equipped with a transmitter and a receiver. The transmitter and receiver at any station may…
ALTERNATIVE LOGIC GATE OBJECTIVE QUESTIONS
1) If a³ – input NOR gate has eight input possibilities, how many of those possibilities result in a HIGH output? a) 1. b) 2. c) 7. d) 8. 2) The output of a NOR…
BROADCASTING
Broadcasting is the distribution of audio and video content to a dispersed audience via any audio or visual mass communications medium, but usually one using electromagnetic radiation (radio waves). The receiving parties may include the general public or a relatively…
STANDARD SINGLE LOGIC GATE OBJECTIVE QUESTIONS
1) The output of an AND gate with three inputs, A, B, and C, is HIGH when _ a) A = 1, B = 1, C = 0. b) A = 0, B = 0, C = 0. …
ICT
A communication system is a collection of individual communications networks, transmission systems, relay stations, tributary stations, and data terminal equipment (DTE) usually capable of interconnection and interoperation to form an integrated whole. The components of a communications system serve a…
MEMORY UNITS OBJECTIVE QUESTIONS
1) A disk’s content that is recorded at the time of manufacture and that cannot be changed or erased by the user is _ a) Memory only. b) Write – only. c) Once – only. d) Read-only.…
STRING FUNCTIONS
The major string handling functions in BASIC programming language are: ASC function CHR$ function LEFT$ function RIGHT$ function MID$ function VAL function STR$ function LEN function DAT$ function POS function SEG$ function 1) ASCII FUNCTION (ASC) The ASC function…
BASIC PROGRAMMING LANGUAGE 1 OBJECTIVE QUESTIONS
1) A variable name is declared as an array in BASIC by _ a) INPUT. b) READ. c) FOR. d) DIM. 2) In BASIC, REM shows a statement to be _ a) Output. b)…
BASIC PROGRAMMING 3
ARRAYS A table is a data structure that enables data to be stored in the main memory of the computer. The term table is also known as array. An array variable is a data structure consisting of an ordered set…
PROGRAMMING LANGUAGE OBJECTIVE QUESTIONS
1) A(n) _ converts and executes one statement at a time. a) compiler. b) interpreter. c) converter. d) instructions. 2) What is a Compiler? a) An Application Software. b) A Process. c) A…
HIGH LEVEL LANGUAGES
High-level language is any programming language that enables development of a program in much simpler programming context and is generally independent of the computer’s hardware architecture. High-level language has a higher level of abstraction from the computer, and focuses more…
