How much computer awareness is asked, and where?

It is a distinct section in several bank mains papers, especially clerical cadre and some PO exams, usually a set of quick factual questions on hardware, networking, security and common software. It also appears within general awareness in a number of SSC and other papers. The syllabus is finite and the questions are recall-based, which makes it one of the highest scoring rates per minute of study in the paper.

Do I need to know programming to answer these?

No. The questions test definitions and everyday computer literacy — what RAM is, the difference between a compiler and an interpreter, what a phishing attack is, which key combination copies text. You do not write code. Knowing the vocabulary and the common abbreviations cold is enough for almost every question.

Are the office shortcuts really worth memorising?

Yes, because they are free marks. A handful of shortcuts recur — copy, paste, cut, undo, save, bold, select all — and questions on them are pure recall with no reasoning. They take a few minutes to learn and reliably turn up, so they are among the best time-to-marks ratios in the whole section.

Computer awareness glossary for bank and SSC exams

Computer awareness is a finite, recall-based section, which makes it some of the easiest marks in a bank mains paper if the vocabulary is on recall — and a scatter of lost marks if it is not. This is a revision glossary of the terms that actually appear, grouped by theme. It is written to be scanned and self-tested, not read once and forgotten.

Hardware and the parts of a computer

CPU — central processing unit, the “brain”; contains the ALU and the control unit.
ALU — arithmetic and logic unit, which performs calculations and comparisons.
Control unit — directs the flow of data and instructions inside the CPU.
Motherboard — the main circuit board connecting all components.
Input devices — keyboard, mouse, scanner, microphone, webcam.
Output devices — monitor, printer, speakers.
Ports — connection points such as USB, HDMI and Ethernet.

Memory and storage

RAM — random access memory, fast, temporary, volatile (lost when power is off).
ROM — read-only memory, permanent, non-volatile, holds startup instructions.
Cache — very fast memory close to the CPU that stores frequently used data.
Primary vs secondary storage — primary is RAM/ROM; secondary is the hard disk, SSD, pen drive and CD/DVD.
HDD and SSD — the magnetic hard disk drive and the faster solid-state drive.

The memory units, which are a favourite one-mark question:

Unit	Size
1 byte	8 bits
1 kilobyte (KB)	1024 bytes
1 megabyte (MB)	1024 KB
1 gigabyte (GB)	1024 MB
1 terabyte (TB)	1024 GB
1 petabyte (PB)	1024 TB
1 nibble	4 bits

Software

System software — runs the computer itself; the operating system is the chief example.
Application software — does a user task, such as a word processor or browser.
Operating system (OS) — manages hardware and software; Windows, Linux, macOS, Android.
Firmware — software written permanently into hardware, such as the BIOS.
Utility software — maintenance tools such as antivirus and disk cleanup.
Compiler, interpreter, assembler — a compiler translates a whole program to machine code at once; an interpreter does it line by line; an assembler converts assembly language to machine code.
GUI and CLI — graphical user interface (icons, windows) versus command-line interface (typed commands).

Number systems

System	Base	Digits
Binary	2	0, 1
Octal	8	0–7
Decimal	10	0–9
Hexadecimal	16	0–9, A–F

Computers work in binary; a bit is a single binary digit, 0 or 1.

Networking

LAN, MAN, WAN — local, metropolitan and wide area networks, by size.
PAN — a personal area network, over a very short range such as Bluetooth.
Topology — the layout of a network — bus, star, ring, mesh.
Protocol — the agreed rules for communication.
TCP/IP — the core suite of internet protocols.
HTTP / HTTPS — the web transfer protocol; HTTPS is the secure, encrypted version.
FTP — file transfer protocol.
SMTP, POP, IMAP — protocols for sending (SMTP) and receiving (POP, IMAP) email.
IP address — the numeric address of a device on a network.
DNS — the domain name system, which translates a website name into an IP address.
URL — the full web address of a resource.
ISP — internet service provider.
Bandwidth — the data-carrying capacity of a connection.

The internet and the web

WWW — the world wide web, the collection of linked pages on the internet.
Browser — software to view web pages — Chrome, Firefox, Edge, Safari.
Search engine — a service that finds web pages — Google, Bing.
Cloud computing — using computing resources delivered over the internet rather than a local machine.
Cookie — a small file a site stores in the browser to remember a user.
Hyperlink — clickable text or image that jumps to another resource.

Security

Malware — the umbrella term for malicious software.
Virus — malware that attaches to a file and spreads when it runs.
Worm — malware that spreads by itself across a network.
Trojan — malware disguised as a legitimate program.
Phishing — tricking a user into revealing credentials, usually by a fake message or site.
Firewall — hardware or software that filters network traffic to block threats.
Antivirus — software that detects and removes malware.
Encryption — encoding data so only an authorised party can read it.
Spam — unsolicited bulk messages, usually email.
Authentication — verifying identity, such as by a password or OTP.

Office shortcuts worth memorising

Shortcut	Action
Ctrl + C / X / V	copy / cut / paste
Ctrl + Z / Y	undo / redo
Ctrl + S	save
Ctrl + P	print
Ctrl + A	select all
Ctrl + B / I / U	bold / italic / underline
Ctrl + F	find
Ctrl + Home / End	go to start / end of document

Common file extensions

Extension	File type
.docx	Word document
.xlsx	Excel spreadsheet
.pptx	PowerPoint presentation
.pdf	portable document
.jpg / .png	images
.mp3 / .mp4	audio / video
.exe	executable program
.html	web page

Abbreviations that recur

CPU, RAM, ROM, GUI, OS, HTTP, HTML, URL, DNS, ISP, LAN, WAN, PDF, USB, HDMI, SSD, HDD, OCR, ASCII — expand each aloud as a drill. ASCII is the American standard code for information interchange; OCR is optical character recognition; USB is universal serial bus; HDMI is high-definition multimedia interface.

How to use this glossary

Scan a theme and cover the definitions, producing each from the term. The section is short enough to test in full in one sitting.
Memorise the shortcuts and memory units cold — they are pure recall and turn up reliably.
Confirm with a mock test. Because the questions are factual, a mock quickly shows the handful of terms you still confuse, and those are your entire revision list for the section.