All Free Computer Science and IT MCQs with Answers

161. FM stands for ________?

• A. Frequent Modulation
• B. Frequency Modulation
• C. Frequency Method
• D. Frequency Molecules

Explanation: FM means Frequency Modulation, in which the carrier wave's frequency varies according to the information signal. The amplitude remains comparatively constant, unlike in AM.

162. JPEG stands for ________?

• A. Joint Photo Electronic Group
• B. Joint Picture Electronic Group
• C. Joint photographic experts group
• D. Joint Picture Expert Group

Explanation: JPEG expands to Joint Photographic Experts Group, the committee that developed the widely used image-compression standard. “Photographic” and “Experts” must be plural in the full name.

163. Which of the following shortcut key is used to close the program?

• A. Crt+F3
• B. F4
• C. Shif+F4
• D. Alt+F4

Explanation: Alt+F4 closes the active application window or program. F4 alone usually repeats an action or works with other keys, so it does not generally close the program.

164. Which of the following contains the control panel program in the start menu?

• A. Program
• B. Help
• C. Run
• D. Settings

Explanation: In the classic Windows Start menu, Control Panel was accessed through Settings. Programs, Help, and Run served different functions and did not contain the Control Panel entry.

165. IMEI stands for ________?

• A. International Mobile Equipment Information
• B. International Mobile Equipment Identity
• C. International Mobile Educational Identity
• D. International Machine Equipment Identity

Explanation: IMEI means International Mobile Equipment Identity and is a unique identifier assigned to a mobile device. It identifies the equipment, not the subscriber's phone number or educational details.

166. A combination of 4 bit is called ______?

• A. Byte
• B. Nibble
• C. Gega Byte
• D. Mega byte

Explanation: A nibble is a group of four bits, so it represents half of an eight-bit byte. Mega byte and gigabyte are much larger storage units.

167. PDF stands for ________?

• A. Printed Document Format
• B. Public Document Format
• C. Portable Document Format
• D. Published Document Format

Explanation: PDF means Portable Document Format, designed to preserve a document’s layout across devices and operating systems. The word “Portable” is the key clue.

168. SWF stands for ________?

• A. Shut Wave Flash
• B. Shock Wave Player
• C. Shock Wave Flash
• D. Shut Wave Flash

Explanation: SWF originally meant Shockwave Flash, the file format used by Adobe Flash content. Flash and SWF are now obsolete, but this is the standard historical expansion.

169. RTF stands for ________?

• A. Right Text Format
• B. Read Text Format
• C. Rich Text Format
• D. Royal Text Format

Explanation: RTF means Rich Text Format, a document format that can preserve basic formatting such as fonts, bold text and alignment across word processors. “Rich” distinguishes it from plain text.

170. BMP stands for ________?

• A. Byte map
• B. Bit map
• C. Byte map process
• D. Bit map process

Explanation: BMP means bitmap, an image representation in which the picture is stored as a map of individual pixels. “Byte map” is a common but incorrect distractor.