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2011. Which of the following places the common data elements in order from smallest to largest?
| Answer : Option E |
| Explanation : |
| Data is organized in a data storage hierarchy of increasingly complex levels: bits, bytes (characters), fields, records, files, and databases. Data are logically organized into: I Bits (characters): - a bit is the smallest unit of data representation (0 or 1); I Byte: a unit of digital information that most commonly consists of 8 bits; I Field: a field consists of a grouping of characters; I Record: record consists of fields, with each field describing an attribute of the entity; I File: a group of related records; I Database: an integrated collection of logically related records or files |
2012. If you accidently deleted some text from a document and you want it back, you should _____
| Answer : Option B |
| Explanation : |
| The Undo command in computer programs erases the last change done to the document reverting it to an older state. In most Windows applications, the Undo command is activated by pressing the Ctrl + Z key combinations. The opposite of undo is Redo which reverses the undo. |
2013. Which of the following refers to restarting the system when it is already powered on?
| Answer : Option A |
| Explanation : |
| Rebooting is the process by which a running computer system is restarted. Reboots can be either cold (alternatively known as hard) where the power to the system is physically turned off and back on again, causing an initial boot of the machine, or warm (alternatively known as soft) where the system restarts without the need to interrupt the power |
2014. Which part of the computer is used for calculating and comparing ?
| Answer : Option B |
| Explanation : |
| The CPU contains the control unit and the arithmetic/ logic unit. The control unit directs and coordinates most of the operations in the computer. Specifically, the ALU carries out three operations: I Arithmetic operations – performing calculations, which include addition, subtraction, multiplication, and division I Comparison operations – comparing data items to determine if the first item is greater than, equal to, or less than the other item I Logical operations – working with conditions and logical operators such as AND, OR, and NOT. |
2015. ________ is when the more power hungry components, such as the monitor and hard drive, are put in idle:
| Answer : Option B |
| Explanation : |
| Standby (or sleep) mode is a mode the computer, monitor or other devices enters when idle for too long. This mode helps conserve power when a computer or computer device is not in use without having to sacrifice the time it would take to turn off and on the computer. |
2016. The software tools that enable a user to interact with a computer for specific purposes are known as___
| Answer : Option E |
| Explanation : |
| An application software refers to programs designed to make users more productive and/or assist them with personal tasks. eg. wordprocessing software, spreadsheet software, database software, etc. Application programs use the services of the computer's operating system and other supporting programs. |
2017. Digital computers use a ______ system to encode date andprograms.
| Answer : Option E |
| Explanation : |
| Binary numbers are closely related to digital electronics. With digital electronics, a '1' means that current is present and a '0' means it is not present. The different part of a computer communicate through pulses of current (1s and 0 s). Computer can calculate complex equations and perform complex calculations. Calculating using only 1s and 0 s is called Binary system. A computer can process only 1s and 0 s. |
2018. Which of these is not an example of an input device ?
| Answer : Option D |
| Explanation : |
| Examples of input devices include keyboards, mice, scanners, digital cameras and joysticks. A hard disk drive (HDD) is a data storage device used for storing and retrieving digital information using rapidly rotating disks (platters) coated with magnetic material. |
2019. How is the processing speed of supercomputers measured?
| Answer : Option C |
| Explanation : |
| A supercomputer is about speed. Its processing speed is measured in floating point operations per second (flops), or the number of calculations a supercomputer can perform in a second. For example, ISRO's SAGA-220 logs in at 220 teraflops - 10 followed by 12 zeroes. There are computers going into petaflops (15 zeroes) and the future is zetaflops (21 zeroes). |
2020. What is equipment used to capture information and commands?
| Answer : Option C |
| Explanation : |
| Input devices are peripheral devices that are used to enter data in the form of numbers, letters, symbols, image, commands into the computer for future processing. For. eg. keyboard, mouse, scanner, microphone, etc. |
2021. What does VOIP stand for?
| Answer : Option D |
| Explanation : |
| VOIP stands for Voice over Internet Protocol. It is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. |
2022. Junk e-mail is also called-
| Answer : Option E |
| Explanation : |
| Junk email is unsolicited email that wants to sell you something. Junk email is often sent as a 'spam'- a single email message broad cast to hundreds or thousands of unknowing recipients and is also usually 'anonymous' in that you can not write back to the address that is listed as the sender of the message. |
2023. Which of the following is not true about RAM ?
| Answer : Option B |
| Explanation : |
| The hard disk refers to how much space we have available for storing files. When we save a document or install a new program, it gets stored on our hard disk. RAM is not the same as disk space. The computer uses RAM to store actively running programs on the computer. RAM can be accessed hundreds of times faster than a hard drive. |
2024. The components of computer system which we can touch is
| Answer : Option D |
| Explanation : |
| Computer hardware refers to the physical parts or components of a computer system that can be seen or touched. It can be categorized into input devices (keyboard, mouse, scanner, etc); Outputdevices (printer, monitor, speaker, etc) and storage devices (optical disks, magnetic disks, pen drives, etc). |
2025. Which of the following is a component of Internet ?
| Answer : Option C |
| Explanation : |
| Gateway is a component of internet which is often used as a connection to a mainframe or the internet. Gateways enable communications between different protocols, data types and environments. This is achieved via protocol conversion, whereby the gateway strips the protocol stack off of the packet and adds the appropriate stack for the other side. |
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