Home › Exam notes › IBPS Banking › Operating Systems

Operating Systems

Reasoning & Computer Aptitude · Computer Fundamentals

Useful for: IBPS Banking, KVS, NVS, OTET, OSSTET, BPSC TRE, UGC NET, EMRS

and 22 more exams

Assistant Teacher Recruitment (Super TET), OSSC RHT — Regular High School Teacher, BPSC Head Teacher / Headmaster, CTSA / STSS, Central Univ./IIT/NIT Faculty, Junior Teacher, OAVS, OPSC Assistant Professor, OPSC PGT, OSEPA Primary Teacher / JT Category-I, OSEPA Upper Primary — Arts, OSEPA Upper Primary — Science, OSSC Teacher Readiness, OSSSC Govt Physical Education Teacher (PET), OSSSC Govt TGT Arts, OSSSC Govt TGT Science — CBZ, OSSSC Govt TGT Science — PCM, Rajasthan PTI / Librarian, Sainik Schools, Special OTET, SSB Lecturer / PGT, SSB School Teachers

हिंदी में पढ़ें

Overview

An operating system manages hardware and software resources and provides the user interface.

Key points

Functions: process management, memory management, file management, device management, security.
Types: batch, time-sharing, real-time, distributed, mobile.
Examples: Windows, Linux (open source), macOS, Android (Linux kernel), iOS.
Booting loads the operating system into RAM.
GUI uses windows and icons; CLI uses typed commands.

Explanation

Real-time operating systems give guaranteed response times (e.g. air-traffic control).
Device drivers let the OS talk to hardware.
Multitasking runs several programs by sharing CPU time.
Utility programs (antivirus, disk cleanup) support the OS.

Step by step

Identify the term or device asked.
Recall its definition or function.
Eliminate options from other categories.

Examples

Android is based on → the Linux kernel.
An OS with guaranteed response time → real-time OS.
Loading the OS into memory at start-up → booting.

Traps and advanced points

Trap: Calling Android a version of Windows.
Trap: Mixing GUI and CLI.
Trap: Thinking Linux is proprietary.

Quick revision

OS = resource manager.
Linux open source.
Booting loads OS.

Practice MCQs

Concept check: Which shortcut commonly copies selected content in Windows applications?
1. Ctrl+X
2. Ctrl+V
3. Ctrl+C
4. Ctrl+Z
Read chapter notes · Similar questions
Show answer
Answer: (c) Ctrl+C. Correct: Ctrl+C.
Computer proficiency drill: Which file extension is commonly associated with a modern Excel workbook?
1. .xlsx
2. .txt
3. .docx
4. .pptx
Read chapter notes · Similar questions
Show answer
Answer: (a) .xlsx. Correct: .xlsx.
Quick check: Which Microsoft Office application is mainly used for slide presentations?
1. Microsoft Word
2. Microsoft Excel
3. Microsoft PowerPoint
4. Calculator
Read chapter notes · Similar questions
Show answer
Answer: (c) Microsoft PowerPoint. Correct: Microsoft PowerPoint.
What is the Recycle Bin mainly used for?
1. Temporarily hold many deleted files before permanent removal
2. Increase RAM
3. Store passwords
4. Run antivirus scans
Read chapter notes · Similar questions
Show answer
Answer: (a) Temporarily hold many deleted files before permanent removal. Correct: Temporarily hold many deleted files before permanent removal.
Which file extension is commonly associated with a modern Excel workbook?
1. .xlsx
2. .txt
3. .docx
4. .pptx
Read chapter notes · Similar questions
Show answer
Answer: (a) .xlsx. Correct: .xlsx.
In a Kochi records practice scenario, Concept check: Which shortcut commonly copies selected content in Windows applications?
1. Ctrl+X
2. Ctrl+V
3. Ctrl+C
4. Ctrl+Z
Read chapter notes · Similar questions
Show answer
Answer: (c) Ctrl+C. Ctrl+C copies the current selection to the clipboard.
In a Kochi research practice scenario, Computer proficiency drill: Which file extension is commonly associated with a modern Excel workbook?
1. .xlsx
2. .txt
3. .docx
4. .pptx
Read chapter notes · Similar questions
Show answer
Answer: (a) .xlsx. Modern Excel workbooks commonly use the .xlsx extension.
In a Kochi training practice scenario, Quick check: Which Microsoft Office application is mainly used for slide presentations?
1. Microsoft Word
2. Microsoft Excel
3. Microsoft PowerPoint
4. Calculator
Read chapter notes · Similar questions
Show answer
Answer: (c) Microsoft PowerPoint. PowerPoint is used to create and present slide decks.
In a Lucknow accounts practice scenario, What is the Recycle Bin mainly used for?
1. Temporarily hold many deleted files before permanent removal
2. Increase RAM
3. Store passwords
4. Run antivirus scans
Read chapter notes · Similar questions
Show answer
Answer: (a) Temporarily hold many deleted files before permanent removal. The Recycle Bin can allow recovery of deleted items until it is emptied.
An operating system is —
1. application software
2. system software that manages hardware and programs
3. a type of virus
4. an input device
Read chapter notes · Similar questions
Show answer
Answer: (b) system software that manages hardware and programs. The OS manages hardware, memory, files and programs.