What is the primary difference between UEFI and BIOS? MCQ with Answer and Explanation

Question
What is the primary difference between UEFI and BIOS?
A. BIOS supports GPT, UEFI supports MBR
B. BIOS is for 32-bit systems, UEFI for 64-bit
C. UEFI is a newer firmware standard with a graphical interface and Secure Boot
D. UEFI is only for Windows, BIOS for Linux
Answer: Option C
Solution (By JKSSB Mock Tests)
UEFI replaces BIOS with advanced features like Secure Boot, faster boot, and support for large disks.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
Which Linux command is used to create an alias for a command?
A. alias
B. ln
C. set
D. export
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Correct Answer: Option A

Explanation:
alias creates a shortcut for a command or series of commands.
This question belongs to: Computer Operating Systems
Question #2
Which state does a process enter if it completes its execution loop but its parent process has not yet read its exit status value via system routines?
A. Zombie State
B. Orphan State
C. Blocked State
D. Ready State
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Correct Answer: Option A

Explanation:
A process that has finished execution but still has an entry in the process table is a 'Zombie' process, waiting for its parent to read its exit code.
This question belongs to: Computer Operating Systems
Question #3
What is the function of the Windows 'chkdsk' command?
A. Converts FAT to NTFS
B. Checks the file system and disk for errors and repairs them
C. Cleans up temporary files
D. Defragments the hard disk
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Correct Answer: Option B

Explanation:
chkdsk (Check Disk) scans the file system and disk sectors for errors and attempts to fix them.
This question belongs to: Computer Operating Systems
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