Using an operating system and file management

Correct answer: A. Log out

Explanation: The governing concept is user-session management in an operating system. Selecting Log out ends the current user’s session and usually returns the computer to a sign-in screen, helping prevent another person from using that account. Copy duplicates data, Cut prepares it for moving, and Paste places copied or cut data elsewhere; none of these ends the account session.

Correct answer: B. Lock

Explanation: The governing concept is screen and account security. Lock temporarily blocks access to the active computer while keeping the user’s session and open work available in the background; access can be restored after the correct password or other sign-in method is provided. Sleep mainly reduces power use, Delete removes an item, and Rename changes its name, so option B is correct.

Correct answer: A. New

Explanation: The governing concept is file creation and basic file management. The New command starts a new file, document, or, in many file managers, a new folder; the user can then enter content and save it. Delete removes an existing item, Shut down turns off or closes the computer, and Restore returns an item or setting to an earlier state. Therefore, option A is correct.

Correct answer: B. Save As

Explanation: The governing concept is saving and specifying file details. Save As is used when a new file must be given a filename, file type or format, and storage location for the first time. It may also create another version under a different name. Open accesses an existing file, Close ends the current view, and Undo reverses a recent action; therefore option B is correct.

Correct answer: C. Save

Explanation: The governing concept is updating a stored file. After editing an already named file, the Save command writes the latest changes to that file in its existing location and format. Saving regularly reduces the risk of losing work. Open reads an existing file, Print produces a paper or digital output, and Search locates items without storing edits, so option C is correct.

Correct answer: D. Open

Explanation: The governing concept is accessing an existing stored file. The Open command locates and loads a saved file so that its contents can be viewed, read, or edited in a suitable application. Copy makes a duplicate, Paste inserts previously copied or cut data, and Delete removes an item. Since the question asks to view an existing file, option D is the only suitable choice.

Correct answer: A. Rename

Explanation: The governing concept is naming and organizing files and folders. Rename changes the label of a selected file or folder while preserving its stored contents and usual location. Using meaningful names makes later searching and identification easier. Copy creates another item, Search locates items, and Close ends a window or application, so option A correctly describes the required operation.

Correct answer: B. Copy

Explanation: The governing concept is duplicating a file without changing the original. Copy places the selected file’s data on the clipboard or prepares it for duplication; after Paste is used at a destination, an identical copy is created while the source remains available. Cut is intended for moving, Delete removes an item, and Lock protects access, so option B is correct.

Correct answer: C. Cut

Explanation: The governing concept is moving an item between locations. Cut marks the selected file for relocation and places its data on the clipboard; Paste is then used in the destination folder. After a successful move, the item normally no longer remains in the original location. Rename changes only a name, Open accesses contents, and Print produces output, so option C is correct.

Correct answer: D. Paste

Explanation: The governing concept is transferring clipboard content to a destination. Paste inserts a file or other item that was previously copied or cut into the selected folder or location. Copy normally leaves the original in place, while Cut prepares it to move; Paste completes either operation at the destination. Save stores edits, Undo reverses an action, and Search locates items, so option D is correct.

Correct answer: A. Delete

Explanation: The governing concept is file management: the Delete command removes the selected file from its current folder. In most graphical operating systems, the file is first moved to the Recycle Bin, where it may be restored until the bin is emptied. Open only views a file, New creates one, and Save stores changes; therefore Delete is the correct option.

Correct answer: B. Recycle Bin

Explanation: The governing concept is temporary file deletion in an operating system. When a user normally deletes a file, it is moved to the Recycle Bin rather than being removed immediately from storage. From there, it can often be restored or permanently deleted. The Documents folder stores documents, while the Start menu and Taskbar provide access to applications, so Recycle Bin is correct.

Correct answer: C. Restore

Explanation: The governing concept is file recovery through the Recycle Bin. Selecting a deleted file and choosing Restore normally returns it to its original folder or location. Empty permanently removes items from the bin, Rename changes only the file name, and Print produces a paper or digital printout. Because the question asks specifically about bringing the file back, Restore is the only suitable option.

Correct answer: D. Files inside it are generally deleted permanently

Explanation: The governing concept is permanent deletion. Emptying the Recycle Bin removes all items stored there from the normal recovery process, so those files are generally deleted permanently and cannot be restored through the bin. The action does not return files to the desktop, create copies, or rename them. Therefore option D correctly describes the usual result, although specialized recovery tools may sometimes exist.

Correct answer: A. File extension

Explanation: The governing concept is the file extension, the group of characters after the final dot in a file name, such as .txt, .jpg, or .mp3. It helps the operating system and the user recognize the file format and choose a suitable application. Folder color, screen size, and mouse pointer do not identify the stored file type, so option A is correct.

Correct answer: B. .jpg

Explanation: The governing concept is recognizing file formats through extensions. JPG, written as .jpg, is a widely used image format, especially for photographs and compressed pictures. TXT normally represents plain text, MP3 represents audio, and PDF represents a portable document. Therefore .jpg is the only option that commonly identifies an image file, making option B correct.

Correct answer: C. MP3

Explanation: The governing concept is identifying a file’s media type from its extension. MP3 is a common compressed audio format used for music, speech, and other sound recordings. PNG is an image format, DOCX is a word-processing document format, and XLSX is a spreadsheet format. Since only MP3 denotes audio among the choices, option C is correct.

Correct answer: D. TXT

Explanation: The governing concept is matching a file extension with its format. TXT is commonly used for plain text files containing unformatted characters. JPG and PNG are image formats, while MP4 is a multimedia container commonly used for video and may include audio. Since the question asks specifically for plain text, .txt is the appropriate and only correct extension, so option D is correct.

Correct answer: A. Search

Explanation: The governing concept is locating stored items through the operating system. The Search feature scans file and folder names, and often their contents or metadata, using words entered by the user. Sleep temporarily reduces activity, Lock protects the session, and Restart reloads the operating system; none of these locates a particular item. Therefore Search is the correct option.

Correct answer: C. File path

Explanation: The governing concept is a file path. A path records the sequence of drives and folders needed to reach a particular file, such as \(\texttt{C:\textbackslash Users\textbackslash Student\textbackslash Documents\textbackslash report.txt}\). File size describes storage space, file type describes the format, and file date records a time value. Because the question asks for the location sequence, File path, option C, is correct.

Correct answer: A. Shift key

Explanation: The governing concept is range selection in a file manager. Hold the Shift key, click the first file, and then click the last file; the operating system selects the items between them as one continuous range. Caps Lock changes typing case, Enter opens or confirms an item, and Escape cancels an action, so none of those keys performs consecutive-file selection.

Correct answer: B. Control key

Explanation: The governing concept is non-contiguous selection. Hold the Control key while clicking each separate file, so earlier choices remain selected while additional files are added. Shift is normally used for a continuous range, whereas Tab changes focus, Spacebar has other selection uses, and Backspace deletes a character or may navigate back; therefore Control is correct.

Correct answer: C. Undo

Explanation: The governing concept is undoing a recent operation. The Undo command reverses the most recent supported action, such as accidental typing, moving, or deleting, allowing the user to correct a mistake. Redo reapplies an action that was undone, Save stores the current work, and Search locates information. Thus option C correctly describes the required command.

Correct answer: A. Sort by name

Explanation: The governing concept is sorting, which changes the display order without changing the files themselves. Choosing Sort by name arranges visible files alphabetically or lexicographically according to their names, often with separate ascending or descending choices. Restart reboots the device, Log out ends the user session, and Lock protects the screen; none of these organizes file order.

Correct answer: B. Date modified

Explanation: The governing concept is sorting by metadata. Date modified records when a file was most recently changed; sorting this property in descending order places the newest modified file at the top. File color is only a visual label, while pointer size and screen brightness are display settings unrelated to file age. Therefore Date modified is the suitable property.