Computer Knowledge

Operating Systems

1,344 Questions

Test your computer knowledge with these questions on operating systems. The content covers various platforms including Unix, Linux, Windows, Android, and Macintosh. These questions are commonly asked in the computer knowledge sections of banking and government exams.

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Operating Systems Questions

Multiple choice technology web technology

What is the hardware driver subsystem found in Mac OS X?

  1. Basic kernel-level/dev support

  2. INF descriptors

  3. I/O Kit

  4. Grand Theft Auto IV
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

I/O Kit is the hardware driver subsystem in Mac OS X (now macOS). It's an object-oriented framework for developing device drivers that uses a subset of C++. Option A is too vague, option B refers to Windows driver descriptors, and option D is a video game.

Multiple choice technology operating systems

The Windows OS architecture is highly modular and built on two layers. One layer is called User Mode. What is the other layer called?

  1. The Hardware Abstraction Layer (HAL)

  2. Hyper-V

  3. Kernel Mode

  4. Executive Services
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Windows architecture uses two privilege modes: User Mode (restricted, for applications) and Kernel Mode (unrestricted, for OS services). This dual-mode design provides security and stability by preventing applications from directly accessing critical system resources.

Multiple choice technology operating systems

Windows Server 2008 introduces a minimal installation option, known chiefly as "Windows without Windows." What is the official moniker of this option?

  1. Windows Server MiniMe

  2. Server Core

  3. Windows Preinstallation Environment (WinPE)

  4. Hyper-V
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Server Core is the official name for Windows Server 2008's minimal installation option. It installs without a graphical user interface (GUI), reducing both attack surface and resource requirements. The 'Windows without Windows' nickname refers to the absence of the desktop shell - management is done via command line, PowerShell, or remote tools.

Multiple choice technology operating systems

Windows NT was intended to be the successor of which OS, originally created by Microsoft and IBM?

  1. OS/2

  2. POSIX

  3. DOS

  4. VMS
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Windows NT was originally developed as OS/2 NT, intended to be the successor to OS/2 - the joint operating system project between Microsoft and IBM. When the partnership dissolved, Microsoft pivoted to develop Windows NT independently, while IBM continued OS/2. POSIX and DOS are not correct, and VMS influenced NT's architecture but wasn't its predecessor.

Multiple choice technology operating systems

To remain competitive with the online likes of Google and others, Microsoft is headed to the "cloud." What forthcoming cloud-based OS will allow Microsoft and its ISVs to develop and run Windows apps via the Web?

  1. Windows 7

  2. Windows Live

  3. Windows Azure

  4. Nebula
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Windows Azure (later Microsoft Azure) is Microsoft's cloud computing platform for hosting and running Windows applications via the web. Windows 7 is a desktop OS, Windows Live is consumer services, and 'Nebula' is fictional. Azure allows ISVs to build cloud-based Windows apps.

Multiple choice technology operating systems

Assume you have a folder on a Windows Server shared to the Everyone group as Read access. Assume also that, on the local NTFS disk, the file provides Full Control to the Everyone group. Now, if User John attempts to access that folder remotely, what will his cumulative permissions be?

  1. Read

  2. Change

  3. Full Control

  4. No Access
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When accessing a shared folder, Windows applies the most restrictive permission between share and NTFS permissions. Here, the share grants Read, while NTFS grants Full Control to Everyone. The more restrictive Read permission applies. John cannot get Full Control remotely - the share permission is the bottleneck.

Multiple choice technology databases

Which command or action causes an automatic rollback?

  1. GRANT

  2. EXIT at pl/sql prompt

  3. Alter command

  4. System crash

  5. Commit before a system crash
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

System crashes cause automatic rollback of uncommitted transactions to maintain database ACID properties. The UNDO logs are used to reverse any uncommitted changes. Normal SQL commands like GRANT, ALTER, or EXIT do not trigger rollbacks.

Multiple choice technology programming languages

The settings in the Data Browser/Table View Maintenance field...

  1. Regulate the transport of the table's data records during installs, upgrades, copies

  2. Regulate the scope that you may use to display and maintain data records

  3. Answers A & B

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In SAP ABAP Dictionary, the 'Data Browser/Table View Maintenance' setting (such as 'Display/Maintenance Allowed') regulates whether and how users can view, edit, or maintain the table's records using tools like SE16 or SM30.

Multiple choice technology databases

CREATE DATABASE command creates some default table spaces. What are they? Choose all that apply.

  1. SYSLOGSPACE

  2. TEMPSPACE1

  3. USERSPACE1

  4. SYSCATSPACE
Reveal answer Fill a bubble to check yourself
B,C,D Correct answer
Explanation

When a DB2 database is created, the system automatically creates default tablespaces: SYSCATSPACE (for the system catalog), TEMPSPACE1 (for system temporary tables), and USERSPACE1 (the default space for user tables). SYSLOGSPACE is not a default tablespace.

Multiple choice technology databases

What keyword is used to define the number of pages that the database will write to one container before skipping to the next container?

  1. SKIPSIZE

  2. PREFETCHSIZE

  3. STRIPSIZE

  4. EXTENTSIZE
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

EXTENTSIZE defines the number of pages written to a container before moving to the next. STRIPSIZE is for striping across containers, PREFETCHSIZE is for read-ahead, and SKIPSIZE is not a standard database storage parameter. The extent is the fundamental allocation unit.

Multiple choice technology operating systems

How do you display the desktop?

  1. Windows Logo + E

  2. Windows Logo + D

  3. Windows Logo + M

  4. None
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Windows Logo + D is the keyboard shortcut that minimizes all open windows and displays the desktop. Windows Logo + E opens File Explorer, while Windows Logo + M minimizes all windows but doesn't necessarily display the desktop if there are minimized windows.

Multiple choice technology operating systems

How can you display the start menu?

  1. Ctrl + S

  2. Windows Logo + D

  3. Windows Logo

  4. None
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pressing the Windows Logo key alone opens the Start Menu in Windows. Ctrl + S is the save shortcut, Windows Logo + D shows the desktop, and None is incorrect. This is a fundamental Windows navigation shortcut.

Multiple choice technology databases

Which of the following causes a lock that is being held by an application using the Cursor Stability isolation level to be released?

  1. The cursor is moved to another row

  2. The row the cursor is on is deleted by the application

  3. The row the cursor is on is deleted by another application

  4. The row the cursor is on needs to be updated by another application

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Under DB2's Cursor Stability isolation level, locks are held only on the row where the cursor is currently positioned. When the application deletes that row, the cursor no longer has a row to position on, so the lock is released. Moving the cursor to another row also releases the previous lock.

Multiple choice technology databases

Which of the following isolation levels will lock all rows scanned to build a result data set?

  1. Uncommitted Read

  2. Cursor Stability

  3. Read Stability

  4. Repeatable Read
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Repeatable Read isolation level locks all rows that are scanned to build the result set, preventing phantom reads and ensuring that if the same query is executed again within the transaction, the same rows will be returned. Read Stability only locks individual rows as they are read, Cursor Stability locks only the current row position, and Uncommitted Read imposes minimal locking.