Quick Revision

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 → Introduction to Computer 37

TIM (Thermal Interface Material) between CPU and cooler?
Fills microscopic gaps to improve heat transfer
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Which socket uses LGA (Land Grid Array) design where pins are on the socket?
Both Intel LGA and AMD AM5
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PGA (Pin Grid Array) socket has pins on?
CPU package
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Which bus connects CPU to PCH (Platform Controller Hub) on modern motherboards?
DMI (Direct Media Interface)
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Chipset on a motherboard handles?
I/O operations, USB, SATA, PCIe routing for peripheral connections
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POST beep codes are used to?
Identify hardware failures through audio patterns
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UEFI advantages over legacy BIOS include?
Supports GPT, drives >2TB, faster boot, GUI interface
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Secure Boot in UEFI prevents?
Loading of unsigned/unauthorized bootloaders and OS
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TPM (Trusted Platform Module) chip is used for?
Secure key storage, disk encryption, attestation
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TPM 2.0 is required for?
Windows 11
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Which technology allows CPU to access GPU memory and vice versa (AMD)?
Smart Access Memory (SAM/Resizable BAR)
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NVLink is used to?
Connect two NVIDIA GPUs for multi-GPU configurations
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Which technology connects multiple monitors to one DisplayPort?
MST (Multi-Stream Transport)
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Thunderbolt 3/4 is based on which physical connector?
USB-C
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Which GPU memory type offers highest bandwidth for modern GPUs?
HBM2e
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CPU cache coherency ensures?
Multiple CPU cores see consistent memory values
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MESI protocol states are?
Modified, Exclusive, Shared, Invalid
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False sharing in multi-core CPUs occurs when?
Different variables in same cache line cause unnecessary invalidation
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NUMA (Non-Uniform Memory Access) architecture means?
Memory access time depends on which CPU accesses which memory bank
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Which bus standard replaced AGP for graphics cards?
PCIe (PCI Express)
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PCIe bandwidth is measured per direction, so x16 PCIe 4.0 total bandwidth is?
32 GB/s
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Which storage connector is used for laptop storage today?
M.2 NVMe primarily
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UFS (Universal Flash Storage) in smartphones is?
Faster than eMMC with command queue support
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Which expansion card adds Thunderbolt to a desktop PC?
Thunderbolt add-in card
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Which scheduling algorithm is used in Linux by default?
CFS (Completely Fair Scheduler)
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CFS in Linux uses which data structure?
Red-black tree
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Which signal in Linux cannot be caught or ignored?
SIGKILL
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D-Bus in Linux is used for?
Inter-process communication between desktop applications
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systemd in Linux replaces?
init (SysV init)
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Which systemd command starts a service?
systemctl start
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Docker Compose is used for?
Defining and running multi-container applications
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Dockerfile is used to?
Define instructions to build a Docker image
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Which Linux command shows all Docker containers (including stopped)?
docker ps -a
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Kubernetes deployment ensures?
Desired number of pod replicas are always running
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Kubernetes Service provides?
Stable network endpoint for accessing pods (load balances)
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Kubernetes Ingress manages?
External HTTP/HTTPS access to services
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Helm in Kubernetes is?
Package manager for Kubernetes applications (charts)
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Computer Fundamentals → Memory Units 3

eMMC storage used in budget devices differs from NVMe in?
Speed — eMMC is much slower (similar to SATA) and soldered
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Server-grade RAM uses which DIMM type for capacity and stability?
RDIMM/LRDIMM
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Containerization differs from virtualization primarily because?
Containers share host OS kernel — lighter and faster
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