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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.

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Computer Fundamentals → Computer Security 2

Phishing is?
Fraudulent attempt to obtain sensitive information
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WORM storage means?
Write Once Read Many
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Computer Fundamentals → Introduction to Computer 35

SSL stands for?
Secure Socket Layer
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Encryption converts?
Plaintext to ciphertext
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Decryption converts?
Ciphertext to plaintext
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Which is a symmetric encryption algorithm?
AES
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RSA is an example of?
Asymmetric encryption
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MD5 and SHA are examples of?
Hashing algorithms
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A digital signature provides?
Authentication and non-repudiation
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Which port does HTTP use by default?
80
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Which port does HTTPS use?
443
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Port 22 is associated with which protocol?
SSH
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Which of the following is a VPN?
Virtual Private Network
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Bandwidth of a network is measured in?
bps/Mbps/Gbps
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Latency in networking refers to?
Delay in data transmission
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Which protocol provides reliable, connection-oriented service?
TCP
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UDP is preferred over TCP when?
Speed is more important than reliability
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Which of the following is NOT volatile memory?
Flash NAND
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Which type of software license allows modification and redistribution?
GPL (GNU Public License)
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The page fault occurs when?
A page referenced is not in RAM
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Which is the correct binary representation of -5 in 8-bit 2's complement?
11111011
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Decimal 0.25 in binary is?
0.01
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The purpose of a bootloader is?
Load the OS into memory
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Which generation introduced the concept of personal computing?
Fourth
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ASCII code 48 represents?
0
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Which component on a motherboard maintains date and time?
CMOS + RTC
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Which is the fastest cache level closest to CPU core?
L1
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A word in computing refers to?
Natural unit of data processed by CPU
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Which binary operation yields 1 only when both inputs are 1?
AND
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Which binary operation yields 1 when either input is 1?
OR
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XOR yields 1 when?
Both inputs different
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NAND is functionally complete because?
Any logic function can be built from NAND gates only
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De Morgan's theorem states?
NOT(A AND B) = NOT A OR NOT B
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Which logic gate has output that is always the complement of its input?
NOT
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A half adder adds?
Two single bits
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A full adder adds?
Two bits plus carry-in
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Flip-flops are used to store?
1 bit
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Computer Fundamentals → Memory Units 1

The Harvard architecture differs from von Neumann in that?
It has separate memory for instructions and data
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Computer Fundamentals → Number System 2

Decimal 2048 in hexadecimal is?
800
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A byte is equal to?
8 bits
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