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1.  
Which part of the operating system stays in main memory all the time and controls the hardware?

Correct Answer: A [Kernel]

Explanation:

The kernel is the core of the OS.

2.  
Restarting a computer that is already on, without switching off the power, is called:

Correct Answer: D [Warm boot]

Explanation:

Warm (soft) boot = restart.

3.  
Deleted files from the hard disk are kept until emptied in the:

Correct Answer: B [Recycle Bin]

Explanation:

The Recycle Bin lets you restore deleted files.

4.  
Which OS type must respond within a strict deadline?

Correct Answer: C [Real-time]

Explanation:

Deadline = real-time.

5.  
GUI stands for:

Correct Answer: B [Graphical User Interface]

Explanation:

GUI = Graphical User Interface.

6.  
Which Linux command shows the present working directory?

Correct Answer: D [pwd]

Explanation:

pwd = print working directory.

7.  
True or false? "Linux file names are case-sensitive, so Notes.txt and notes.txt are different files."

Correct Answer: A [True]

Explanation:

Linux distinguishes upper and lower case in names.

8.  
The hardware check done each time a PC is switched on is called:

Correct Answer: C [POST]

Explanation:

POST = Power-On Self-Test; BIOS/UEFI are the firmware that run it.

9.  
Which of these is a command-line interface?

Correct Answer: A [MS-DOS]

Explanation:

MS-DOS works with typed commands.

10.  
Stretch – Fill in the blank: chmod 700 gives the owner the permissions ______.

Correct Answer: C [rwx]

Explanation:

7 = 4 + 2 + 1 = rwx.

11.  
Odd one out:

Correct Answer: A [NTFS]

Explanation:

NTFS is a file system; the others are Linux commands.

12.  
Which file system limits a single file to 4 GB?

Correct Answer: D [FAT32]

Explanation:

FAT32 cannot store one file larger than 4 GB.

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