Explanation

• The ARC command is used to draw an arc in AutoCAD.
• It is available under the Draw menu.
• Arc can be created using different methods and parameters.
• It is commonly used in 2D drafting.

Explanation

• EXTRUDE converts a 2D closed object into a 3D solid or surface.
• It extends the object along the Z-axis.
• It is commonly used to create 3D models from 2D profiles.
• For example, a 2D circle can be extruded to create a 3D cylinder.

Explanation

• A projector is an output device used to display video images on a large screen.
• It receives video signals from a computer or other device.
• Projectors are commonly used in classrooms, offices, and presentations.

Additional information:

• A scanner is an input device used to digitize documents and images.
• A printer produces a hard copy of digital information.

Last verified on 12-08-2026

Explanation

• An antivirus software protects a computer against malware and viruses.
• It detects, blocks, and removes harmful software from a computer.
• Common threats include viruses, worms, Trojans, and spyware.
• Antivirus software helps protect files, programs, and system data.
• It can provide real-time protection against new threats.

Last verified on 12-08-2026

Explanation

• A computer is an electronic device that accepts, processes, stores, and produces information by executing a set of stored instructions.
• A computer works according to stored instructions, called a program.
• It performs both arithmetic and logical operations.
• It follows instructions sequentially, unless the program specifies a different sequence.
• The basic process is Input → Processing → Output → Storage.

Last verified on 11-08-2026