Explanation

UNIX is an operating system that was originally AT&T.

UNIX development started in 1969 at the Bell Labs research center by Ken Thompson and Dennis Ritchie.

UNIX was widely used for Internet servers, workstations, and mainframe computers.

Explanation

Oracle is not a function of an operating system.

It is a database management system.

Whereas Linux, DOS, and Windows are examples of operating systems that manage hardware and software resources in a computer system.

Explanation

Minimize (collapse) or restore the ribbon. (CTRL+F1)

Display the shortcut menu for the selected item. (SHIFT+F10)

Move the focus to select the active tab, your Word document, task pane, or status bar. (F6)

Explanation

Hybrid computers can perform the tasks of  digital and analogue computer

These computers are used in aircraft, hospitals where measuring physical quantities and converting them into digital data to analysis is required.

AGM 07.5.23

Explanation

A Firewall is used in a computer network to protect a server from unauthorized access and potential damage by those who log in.

It monitors and controls incoming and outgoing network traffic based on predetermined security rules.

Explanation

Adobe Writer (Acrobat Pro/Writer) is used to convert documents into PDF format.

It allows users to create, edit, and manage PDF files efficiently.

Explanation

Ctrl + = is the shortcut key for Subscript in many word processors, lowering the selected text below the baseline.

Ctrl + Shift + = is used for Superscript, which raises the selected text above the baseline.

Explanation

Explanation

• A barcode reader, also called a price scanner or point-of-sale (POS) scanner.
• It is a hand-held or stationary input device.
• It used to capture and read information contained in a barcode.

Explanation

• File Management, Task (Process) Management, and Memory Management are responsibilities of the Operating System (OS)
• Memory Management: Allocates and deallocates RAM to programs, ensuring efficient access for the CPU.
• File Management: Handles the storage, organization, naming, and protection of files on storage devices.
• Task/Process Management: Creates, deletes, and schedules processes (tasks) to ensure proper CPU utilization.