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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 → Memory Units 3

Which RAM type is used in modern desktop computers?
DDR4 / DDR5
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ECC RAM is primarily used in?
Servers and workstations requiring high data integrity
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NVMe SSD vs SATA SSD: main advantage of NVMe?
Much higher sequential read/write speeds using PCIe instead of SATA
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Computer Fundamentals → Introduction to Computer 35

The function of a power supply unit (PSU) is?
Convert AC mains power to regulated DC voltages for computer components
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Which wattage PSU is recommended for high-end gaming PC?
650W-850W
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Form factor of a standard desktop motherboard is?
ATX
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What does the SATA connector connect?
Storage devices (HDD/SSD) to motherboard
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M.2 slot supports which storage protocols?
Both SATA and NVMe (PCIe)
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Fan header PWM vs DC?
PWM allows precise speed control by pulse width modulation; DC varies voltage
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What is overclocking?
Running CPU/GPU/RAM above manufacturer's rated specifications for extra performance
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CPU Core i7-11700K 'K' suffix means?
Unlocked multiplier — available for overclocking
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AMD Ryzen CPU 'X' suffix (e.g., 5600X) means?
Higher performance bin with XFR (Extended Frequency Range) support
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CPU socket AM5 supports which memory type?
DDR5 only
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Which company manufactures Ryzen processors?
AMD (Advanced Micro Devices)
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Intel Alder Lake (12th gen) introduced?
Hybrid performance (P-cores) and efficiency (E-cores) architecture
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Which Intel socket is used for 12th/13th generation processors?
LGA 1700
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PCIe 4.0 doubles bandwidth of PCIe 3.0 — per lane bandwidth of PCIe 4.0 is?
2 GB/s
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What is the purpose of a UPS (Uninterruptible Power Supply)?
Provide temporary battery backup during power outages to prevent data loss
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Surge protector vs UPS?
Surge protector only protects against voltage spikes; UPS also provides battery backup
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Which cable type is used for data transfer in high-end storage?
Thunderbolt 4
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RAID 0 is called?
Striping
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Hot-swap in servers refers to?
Replacing components (drives, PSUs) while system is running without power-off
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Redundant PSU in servers?
Second PSU takes over automatically if primary fails (N+1 redundancy)
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IPMI (Intelligent Platform Management Interface) provides?
Out-of-band server management independent of OS state
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What does the beep code pattern '3 beeps' typically indicate in BIOS?
RAM memory error (varies by BIOS manufacturer)
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Blue screen with 'MEMORY_MANAGEMENT' error indicates?
RAM or memory-related problem
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CPU temperature throttling occurs when?
CPU reduces clock speed to prevent damage when threshold is exceeded
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Which command in Windows shows hardware information?
msinfo32
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The binary code for ASCII 'A' is?
01000001
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How many bits in an IPv4 address?
32
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What is the decimal value of binary 11110000?
240
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The subnet mask /24 in CIDR notation corresponds to?
255.255.255.0
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How many host addresses does a /26 subnet provide?
62
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Octal representation uses which digits?
0-7
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Boolean algebra AND gate truth table: 1 AND 0 =?
0
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NOR gate is equivalent to?
OR then NOT
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XNOR gate output is 1 when?
Inputs are the same (both 0 or both 1)
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Google was founded in?
1998
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Computer Fundamentals → Number System 1

Hexadecimal F0 in decimal is?
240
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Computer Fundamentals → Internet Basics 1

Which computer scientist invented the World Wide Web?
Tim Berners-Lee
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