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GK One-Line Question & Answer

15541+ short questions with short answers, covering every category and sub-category on the site — no long articles to scroll through. Good for a fast recap before an exam, or a few minutes of daily practice.

Computer Fundamentals → Introduction to Computer 37

Decimal 7 in binary is?
111
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Hex 1F in decimal is?
31
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Binary right shift by 1 is equivalent to?
Division by 2
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Octal 100 in decimal is?
64
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Decimal 256 in hex is?
100
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Binary 10000000 in decimal is?
128
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In octal, 8 is represented as?
10
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Binary 0001 0000 in decimal is?
16
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Decimal 45 in binary is?
101101
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Hex F in binary is?
1111
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Convert octal 12 to decimal?
10
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Binary AND of 1010 and 1100 is?
1000
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Binary OR of 1010 and 0101 is?
1111
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Binary XOR of 1010 and 1010 is?
0000
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Decimal 0.5 in binary is?
0.1
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Hex 3F in binary is?
00111111
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NOT of binary 10101010 is?
01010101
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Decimal 100 in octal is?
144
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Which component of CPU temporarily stores data being processed?
Registers
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What does 'booting' a computer mean?
Starting up the OS
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POST stands for in computing?
Power On Self Test
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Which file system is native to Windows?
FAT32 and NTFS
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Linux primarily uses which file system?
ext4
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The CMOS chip on a motherboard stores?
BIOS settings
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Which protocol assigns IP addresses automatically?
DHCP
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GUI stands for?
Graphical User Interface
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CLI stands for?
Command Line Interface
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Which of the following is a multi-user OS?
Linux
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Which scheduling algorithm gives equal time slices to all processes?
Round Robin
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Deadlock in OS occurs when?
Processes wait for each other indefinitely for resources
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Which memory management technique divides memory into equal fixed-size blocks?
Paging
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Thrashing in OS refers to?
Excessive paging/swapping reducing useful work
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Which of the following is NOT an OS?
Oracle Database
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A process in the 'Ready' state means?
It is waiting for CPU
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Context switching refers to?
Saving and restoring CPU state when switching processes
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Which is the fastest I/O technique?
DMA
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RAID stands for?
Redundant Array of Independent Disks
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Computer Fundamentals → Number System 2

Which binary number is odd?
1011
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Hexadecimal digit B equals decimal?
11
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Computer Fundamentals → Operating System Basics 1

The kernel of an OS is responsible for?
Hardware-software interaction
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