Computer Awareness Multiple Choice Questions(MCQs) & Answers

(1) Which among the following was the first graphical web browser?

[A] Mosaic

[B] WAIS

[C] CERN

[D] Gopher

Answer: Mosaic
Sol. NCSA Mosaic, or simply Mosaic, is a discontinued early web browser. It has been credited with popularizing the World Wide Web. It was the first graphical web browser.

(2) What is embedded system?

[A] The programme which arrives by mail.

[B] The programme which is the permanent part of the computer

[C] The computer which is the part of a big computer

[D] The computer and software system that has dedicated function within a larger mechanical or electrical system.

Answer: The computer and software system that has dedicated function within a larger mechanical or electrical system
Sol. An embedded system is some combination of computer hardware and software, either fixed in capability or programmable, that is designed for a specific function or for specific functions within a larger system.

(3) What do you call the programs that are used to find out possible faults and their causes?

[A] Operating system extensions

[B] Cookies

[C] Diagnostic software

[D] Boot diskettes

Answer: Diagnostic software
Sol. A diagnostic program is a program written for the express purpose of examining the state, or locating problems with the hardware, or operating system environment that it is running.

(4) An error in software or hardware is called a bug. What is the alternative computer jargon for it?

[A] Leech

[B] Squid

[C] Slug

[D] Glitch

Answer: Glitch
Sol. Glitch and Bug are essentially synonymous. Glitches/bugs are software errors that can cause drastic problems within the code, and typically go unnoticed or unsolved.

(5) Which among the following is an OOP principle?

[A] Structured programming

[B] Procedural programming

[C] Inheritance

[D] Linking

Answer: Inheritance
Sol. In object-oriented programming, inheritance enables new objects to take on the properties of existing objects.

(6) Which among the following does most appropriately relates with Cathode Ray Tube?

[A] Keyboard

[B] Mouse

[C] Monitor

[D] Mother board

Answer: Monitor
Sol. A cathode ray tube (CRT) is a specialised vacuum tube in which images are produced when an electron beam strikes a phosphorescent surface. Most desktop computer displays used CRTs.

(7) Bits are packaged into frames at which layer of the OSI model?

[A] Data link

[B] Transport

[C] Physical

[D] Presentation

Answer: Data link
Sol. Bits are PDU of Layer-1 and Frames are PDU of Layer-2 Data Link Layer

(8) The layers of the OSI model, from the top down, are:

[A] Application, presentation, session, transport, network, data link, physical

[B] Session, presentation, data transport, MAC, network, physical

[C] Physical, data link, network, transport, session, presentation, application

[D] Presentation, application, session, network, transport, data link, physical

Answer: Application, presentation, session, transport, network, data link, physical
Following is the correct order of layers in OSI Model:

Layer 7- Application Layer

Layer 6 –Presentation Layer

Layer 5 – Session Layer

Layer 4 – Transport Layer

Layer 3 – Network Layer

Layer 2 – Data Link Layer

Layer 1 – Physical Layer

(9) In MS-DOS 6.22, which part identifies that product uniquely?

[A] MS

[B] DOS

[C] Ms - DOS

[D] 6.22

Answer: 6.22
Sol. MS-DOS 6.22; 6.22 is the version number which identifies it uniquely.

(10) A router is a networking device that forwards data packets and is connected to two or more data lines from different networks. Which among the following was the earliest device which had almost the same functionality as that of a router?

[A] Interface Delay Device

[B] Interface Traffic Manager

[C] Interface Routing Processor

[D] Interface Message Processor

Answer: Interface Message Processor
Sol. The very first device that had fundamentally the same functionality as a router does today was the Interface Message Processor (IMP); IMPs were the devices that made up the ARPANET, the first TCP/IP network.

(11) Twisted pair wire is commonly used in which of the following?

[A] Telephone networks

[B] Cable TV networks

[C] Computer networks

[D] Both (a) & (b)

Answer: Telephone networks
Sol. Twisted pair wires are used in telephone networks and for digital data transmission over short distances up to 1 km.

(12) Which among the following is a cloud computing platform and infrastructure created by Microsoft?

[A] Simple Storage Service

[B] Atmos

[C] Openstack Swift

[D] Azure

Answer: Azure
Sol. Microsoft is a cloud computing platform and infrastructure created by Microsoft for building, deploying, and managing applications and services through a global network of Microsoft-managed data centers. Azure was announced in October 2008 and released on 1 February 2010 as Windows Azure, before being renamed to Microsoft Azure on 25 March 2014.

(13) Assembly is a _______ based low-level language replacing binary machine-code instructions, which are very hard to remember, it is the classic and uncontroversial example of a low level language.

[A] Memory

[B] High Level

[C] Key

[D] Mnemonic

Answer: Mnemonic
Sol. Assembly language is mnemonic based low level language. Mnemonics are short codes of assembly language which chosen to remind the programmer of the instructions of binary machine-code which are apparently which are very hard to remember, write down, or correct.

(14) The key F12 opens a ______.

[A] SaveAs dialog box

[B] Open dialog box

[C] Save dialog box

[D] Close dialog box

Answer: SaveAs dialog box
Sol. The key F12 opens a SaveAs dialog box.

(15) The operation of combining two cells into a single cell in Excel is referred to as ________.

[A] Join cells

[B] Merge cells

[C] Merge table

[D] Join table

Answer: Merge cells
Sol. The operation of combining two cells into a single cell in Excel is referred to as merge cells.

(16) What is the default cell content alignment in Excel?

[A] Left aligned

[B] Centrally aligned

[C] Text left aligned and numbers right aligned

[D] Text right aligned and numbers left aligned

Answer: Text left aligned and numbers right aligned
Sol. Text left aligned and numbers right aligned is default alignment in Excel.

(17) =Sum (S3 : S10) is an example of a

[A] Function

[B] Formula

[C] Cell address

[D] Value

Answer: Formula
Sol. It is a formula to get sum of the data from cell number S3 to S10.

(18) To switch the slide orientation between portrait and landscape – Click __________ and select Portrait or Landscape as your requirement

[A] Slide page

[B] Slide Orientation

[C] Slide theme

[D] Slide number

Answer: Slide Orientation
Sol. You have to select slide orientation to change orientation.

(19) Distributed processing involves

[A] Solving computer component problems from a different computer

[B] Solving computing problems by breaking them into smaller parts that are separately processed by different computers

[C] Allowing users to share files on a network

[D] Allowing users to access network resources away from the office

Answer: Solving computing problems by breaking them into smaller parts that are separately processed by different computers
Sol. Distributed processing is a phrase used to refer to a variety of computer systems that use more than one computer (or processor) to run an application. This includes parallel processing in which a single computer uses more than one CPU to execute programs.

(20) Which among the following is Android’s latest OS?

[A] Gingerbread

[B] Oreo

[C] Nougat

[D] Lollipop

Answer: Oreo
Sol. Android version 8.0 nicknamed Android Oreo is the latest version of Operating System released by Google in August 2017.

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