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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 → Introduction to Computer 34

Context-free grammar is used in?
Compiler design for syntax analysis
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Lexical analysis in compilers?
Breaks source code into tokens (lexemes)
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Semantic analysis in compiler?
Checks meaning and type correctness
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Code generation in compiler?
Produces target machine code or assembly
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Which of the following is a midterm memory?
RAM
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RISC processors typically have?
Fixed-length instructions, large register file
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Instruction pipelining improves?
CPU throughput by overlapping execution stages
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Hazards in CPU pipelining include?
Data, control, and structural hazards
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Speculative execution in CPUs?
Executes instructions before knowing if needed (branch prediction)
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Meltdown and Spectre are?
CPU vulnerabilities exploiting speculative execution
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Which is true about 64-bit vs 32-bit OS?
64-bit can address more RAM
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Endian conversion is needed when?
Different endian systems exchange data
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IEEE 754 double precision uses?
64 bits
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Which number base is ideal for human reading of binary data?
Hexadecimal
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Two's complement is used because?
It allows single representation of zero and simplifies arithmetic
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Signed magnitude representation has?
Two representations of zero (+0 and -0)
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Gray code consecutive values differ by?
Exactly one bit
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Which is the correct ASCII range for digits 0-9?
48-57
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ASCII codes 65-90 represent?
Uppercase letters A-Z
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ASCII codes 97-122 represent?
Lowercase letters a-z
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ASCII code 32 represents?
Space character
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ASCII code 0-31 are?
Control characters
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UTF-8 encoding uses how many bytes for ASCII characters?
1
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UTF-8 can use up to how many bytes for a single character?
4
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Binary subtraction can be performed using?
Both methods
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Decimal 0.1 in binary is?
0.00011001100... (repeating)
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Binary 10000000000 in decimal is?
1024
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Which of these correctly converts hex CAFE to decimal?
51966
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BCD addition of 9+4: result before correction?
1101
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Excess-3 code is obtained by?
Adding 3 to BCD
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Which code is self-complementing?
Excess-3
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NAND gate output is LOW only when?
Both inputs are HIGH
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NOR gate output is HIGH only when?
Both inputs are LOW
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XNOR gate output is HIGH when?
Both inputs are same
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Computer Fundamentals → Software and Hardware 3

Parsing in compiler design?
Analyzes grammatical structure of source code
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Code optimization in compiler aims to?
Improve execution speed and reduce resource usage
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Symbol table in compiler stores?
Identifiers with type and scope information
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Computer Fundamentals → Number System 3

1 Exabyte equals?
1024 PB
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1 Zettabyte equals?
1024 EB
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Hexadecimal DEAD in decimal is?
57005
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