File Extensions related 15 Theory (MCQ) question and answer

 15 Theory (MCQ) question and answer :-

1. What is a file extension?

A) The name of a file

B) The size of a file

C) The type of a file

D) The location of a file

 

Answer: C) The type of a file

 

2. What is the file extension for a Microsoft Word document?

A) .docx

B) .pdf

C) .jpg

D) .mp3

 

Answer: A) .docx

 

3. What is the file extension for a PDF file?

A) .docx

B) .pdf

C) .jpg

D) .mp3

 

Answer: B) .pdf

 

4. What is the file extension for an executable file in Windows?

A) .docx

B) .pdf

C) .jpg

D) .exe

 

Answer: D) .exe

 

5. Can file extensions be changed?

A) Yes

B) No

 

Answer: A) Yes

 

6. Why are file extensions important?

A) They allow the operating system to know how to handle a file.

B) They make files easier to share.

C) They make files smaller in size.

D) They improve file security.

 

Answer: A) They allow the operating system to know how to handle a file.

 

7. What is the file extension for an image file?

A) .docx

B) .pdf

C) .jpg

D) .mp3

 

Answer: C) .jpg

 

8. What is the file extension for a music file?

A) .docx

B) .pdf

C) .jpg

D) .mp3

 

Answer: D) .mp3

 

9. What is the file extension for a video file?

A) .docx

B) .pdf

C) .jpg

D) .mp4

 

Answer: D) .mp4

 

10.            What is the file extension for a PowerPoint presentation?

A) .docx

B) .pdf

C) .pptx

D) .mp3

 

Answer: C) .pptx

 

11.            What is the file extension for a compressed file?

A) .zip

B) .rar

C) .7z

D) All of the above

 

Answer: D) All of the above

 

12.            What is the file extension for a spreadsheet?

A) .docx

B) .pdf

C) .xlsx

D) .mp

Answer: C) .xlsx

 

13.            What is the file extension for a plain text file?

A) .txt

B) .docx

C) .pdf

D) .mp3

 

Answer: A) .txt

 

14.            What is the file extension for a webpage?

A) .html

B) .docx

C) .pdf

D) .mp3

 

Answer: A) .html

 

15.            What is the file extension for a database file?

A) .db

B) .docx

C) .pdf

D) .mp3

 

Answer: A) .db

What is Joystick Device?

 

Joystick Device Information

A joystick is a type of input device that is used to operate video games, computers, and other electronic devices. It is made up of a lever or joystick that can be manipulated in various orientations to provide input to a computer or gaming console. To allow for additional input, joysticks usually have one or more buttons on the top or side of the device.

Joysticks can be used to control movement in video games, navigate computer interfaces, and operate robotic devices, among other things. They are also frequently used to provide a realistic control experience in flight simulators and other types of simulators.

A USB cable, wireless connection, or Bluetooth can be used to attach a modern joystick to a computer or gaming device. Additional inputs, such as triggers, throttle controls, or programmable buttons, are available on some joysticks, providing for even more precise control.

Toggle key information about Computer Keyboard

 Keyboard Toggle Keys 

    

A keyboard is a device that is used to input information into a computer or other electronic device. It contains a set of keys, each of which represents a specific letter, number, symbol, or function. Some toggle key information about the keyboard includes:

1.   Caps Lock key :- When pressed, this key toggles the capitalization of all letters typed. When the Caps Lock key is on, all letters are typed in uppercase.

2.   Num Lock key :- This key toggles the function of the numeric keypad on the right side of the keyboard. When the Num Lock key is on, the numeric keypad can be used to input numbers, while when it is off, the keys on the numeric keypad have other functions.

3.   Scroll Lock key :- This key toggles the scrolling function of the arrow keys on the keyboard. When the Scroll Lock key is on, the arrow keys can be used to scroll through documents or spreadsheets.

4.   Function keys :- These are a row of keys at the top of the keyboard that can be used to perform various functions, such as adjusting the volume, changing the screen brightness, or opening specific programs.

5.   Modifier keys :- These keys include Shift, Ctrl, Alt, and Command (on Mac keyboards). They modify the function of other keys when pressed in combination with them, allowing for a wider range of input options.

6.   Multimedia keys :- These are special keys that are designed to control multimedia functions, such as playing, pausing, or skipping tracks, adjusting the volume, or launching media player software.

7.   Shortcut keys :- These are combinations of keys that can be used to perform specific actions, such as copying and pasting, saving a document, or closing a window. They can save time and increase efficiency when working with a computer.

Explained about computer graphics card

 

A graphics card, sometimes called a video card or a GPU (Graphics Processing Unit), is a piece of hardware that renders pictures and videos for display on a computer monitor.

When rendering 3D objects, displaying high-definition video, or running demanding games or programmers that demand great visual performance, the graphics card is made to handle complicated calculations and processing connected to graphics.

The graphics card receives instructions from the computer's CPU (Central Processing Unit) and then converts these instructions into visual output. It has its own memory called VRAM (Video RAM), which is used to store and manipulate large amounts of graphics data.

The graphics card is made up of several components, including the GPU, which is in charge of graphics processing, and the video memory, which stores visual data. There are also cooling systems, power connectors, and output connectors for connecting to a monitor or display.

Graphics cards are classified into two types: integrated and dedicated. Integrated graphics cards are integrated into the computer's motherboard and share system resources with the CPU, whereas dedicated graphics cards are separate components designed specifically for graphics processing and have their own memory and processing power.

In summary, a graphics card is a necessary component of any computer that requires high-performance graphics and visual output. It enables the display of high-quality images and videos, which is particularly important in gaming, video editing, and other graphics-intensive applications.

Keyboard 15 MCQ Questions and Answers

 MCQ Questions and Answers

1.   Which key is used to capitalize a letter in Microsoft Word? a. Caps Lock

b. Shift

c. Alt

d. Tab

 

Answer: b. Shift

 

2.   Which key is used to delete the character to the left of the cursor?

a. Delete

b. Backspace

c. Shift

d. Caps Lock

 

Answer: b. Backspace

 

3.   Which key is used to switch between open applications in Windows?

a. Alt

b. Ctrl

c. Tab

d. Windows

 

Answer: a. Alt

4.   Which key is used to open the Windows Start menu?

a. Ctrl

b. Alt

c. Windows

d. Tab

 

Answer: c. Windows

 

5.   Which key combination is used to save a document in Microsoft Word?

a. Ctrl + S

b. Ctrl + C

c. Ctrl + V

d. Ctrl + X

 

Answer: a. Ctrl + S

 

6.   Which key is used to open the Task Manager in Windows?

a. Ctrl + Alt + Del

b. Ctrl + Shift + Esc

c. Alt + Tab

d. Windows + R

 

Answer: b. Ctrl + Shift + Esc

 

7.   Which key is used to toggle between uppercase and lowercase letters in Microsoft Word?

a.    Caps Lock

b. Shift

c. Ctrl

d. Alt

 

Answer: a. Caps Lock

 

8.   Which key is used to open the Run dialog box in Windows?

a. Ctrl + Alt + Del

b. Ctrl + Shift + Esc

c. Alt + Tab

d. Windows + R

 

Answer: d. Windows + R

 

9.   Which key combination is used to select all text in a document in Microsoft Word?

a. Ctrl + A

b. Ctrl + C

c. Ctrl + V

d. Ctrl + X

 

Answer: a. Ctrl + A

 

10.                     Which key is used to open the Control Panel in Windows?

a. Ctrl + Alt + Del

b. Ctrl + Shift + Esc

c. Alt + Tab

d. Windows + X

 

Answer: d. Windows + X

 

11.                     Which key is used to move the cursor to the beginning of a line of text?

a. Home

b. End

c. Page Up

d. Page Down

 

Answer: a. Home

 

12.                     Which key combination is used to cut selected text or files in Windows?

a. Ctrl + C

b. Ctrl + X

c. Ctrl + V

d. Ctrl + A

 

Answer: b. Ctrl + X

 

13.                     Which key is used to create a new document in Microsoft Word?

a. Ctrl + N

b. Ctrl + S

c. Ctrl + O

d. Ctrl + P

 

Answer: a. Ctrl + N

 

14.                     Which key combination is used to close a window or program in Windows?

a. Alt + F4

b. Ctrl + F4

c. Shift + F4

d. Windows + F4

 

Answer: a. Alt + F4

 

15.                     Which key is used to move the cursor to the end of a line of text?

a. Home

b. End

c. Page Up

d. Page Down

 

Answer: b. End

Explained Computer Keyboard Function key

 

The function keys (F1 to F12) are a set of keys located at the top row of the computer keyboard that have different functions depending on the software or application being used. Here's a brief explanation of each function key :-

F1: Opens the help menu or help documentation for the active software or application.

F2: Edits the selected cell or object. In Windows, it also renames a file or folder when selected.

F3: Opens the search or find and replace feature in most software and applications.

F4: Repeats the last action performed. In Windows, it opens the address bar in file explorer.

F5: Opens the "Go To" dialog box, allowing you to navigate to a specific cell or location in a worksheet.

F6: Moves the cursor to the address bar in web browsers and file explorer. In Excel, it moves the cursor to the next pane.

F7: Opens the spell-checker in most software and applications.

F8: Activates the extended selection mode in Excel, allowing you to select cells using the arrow keys.

F9: Calculates all formulas in the active worksheet in Excel.

F10: Activates the menu bar in most software and applications.

F11: Creates a chart in Excel.

F12: Saves the current document or file in most software and applications. In Excel, it opens the "Save As" dialog box.

 

These are just some of the common uses of the function keys in most software and applications.