WGU D386 Study Guide Questions

WGU D386 Study Guide (Questions & Answers) Already Passed!!CPU Answer- The primary component of a computer responsible for executing instructions, performing calculations, and managing data processing tasks ALU (Arithmetic Logic Unit) Answer- The part of the CPU that performs arithmetic operations (add, subtract, etc.) and logical operations (and, or, not) on data CU (Control Unit) Answer- The part of the CPU that manages and coordinates the execution of instructions, controls data flow between different parts of the CPU and memory, and oversees overall operations of computer's components Register Answer- Small, high-speed storage units within the CPU that temporarily hold data and instructions that the CPU is processing, enhancing data access speed and overall efficiency Pipelining Answer- - A technique used in CPU design to increase instruction throughput by breaking down the instruction execution process into stages and allowing multiple instructions to be processed simultaneously at different stages of the pipeline

• This enhances the overall speed of instruction execution

RAM (Random Access Memory) Answer- A computer component used to load applications and files into a non-persistent and fast storage area, holds OS system code L1 cache Answer- - Smallest and fastest cache

• Integrated into CPU core

L2 cache Answer- - Larger but slower than L1

• Resides outside of CPU core

L3 cache Answer- - Larger but slower than L2

• Shared amongst all CPU cores

Virtual RAM Answer- - Space on a hard drive allocated by the OS that pretends to be memory

• Page file (windows) or swap space (Mac, Linux)

Motherboard Answer- Printed circuit board that contains computer components and provides connectors 1 / 2

ATX motherboard Answer- A full-size motherboard Mini-ATX motherboard Answer- A motherboard that is smaller than ATX with similar features Micro-ATX motherboard Answer- A motherboard that is smaller than a mini-ATX, less features and abilities Mini-ITX motherboard Answer- A motherboard designed as replacement for ATX, smaller and less abilities due to size, Information Technology eXtended Expansion slots Answer- Slots that allow you to add extra computer components, think PCIe

• Older, but also PCI
• M.2 slots (for SSD and Wi-Fi cards)

Memory slots Answer- Slots where you insert RAM sticks, DIMM slots (DDR3, DDR4, DDR5), SODIMM slots (smaller for laptops) Cache Answer- High-speed storage area that temporarily holds frequently accessed data or instructions Northbridge Chip Answer- A chip that manages fast connections between CPU, RAM, graphics card Southbridge Chip Answer- A chip that manages slow connections between hard drives, USB ports, audio devices, network interfaces HDD Answer- A storage device that stores data on metal or glass platter coated with magnetic substance, cheaper for mass storage, slow SSD Answer- A storage device that uses flash memory technology to implement persistent mass storage, more expensive but fast

• NVMe

NAS Answer- A centralized storage system with sharing capabilities and remote access RAID 0 Answer- - A RAID technique in which data is striped or alternated between disks

• Great for speed
• No data redundancy

RAID 1 Answer- - A RAID technique in which data is mirrored between disks

• Full redundancy
• A loss of space of one disk

RAID 5 Answer- - A RAID technique in which data is spread amongst three disks

• Parity
• Full redundancy
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