Comprehensive Reference Guide
A comprehensive glossary of terms, definitions, and concepts related to Computer Systems Servicing NC II. Use this reference guide to enhance your understanding of key concepts.
The primary component of a computer that processes instructions and performs calculations.
Intel Core i7, AMD Ryzen 5
Temporary storage that holds data and instructions for the CPU to process.
8GB DDR4, 16GB DDR5
The main circuit board that connects all computer components.
ATX, Micro-ATX, Mini-ITX
Hardware component that enables a computer to connect to a network.
Ethernet card, Wireless adapter
A network that connects computers within a limited geographical area.
Office network, Home network
A network that covers a large geographical area, often connecting multiple LANs.
Internet, Corporate network across cities
A unique numerical identifier assigned to devices on a network.
192.168.1.1, 10.0.0.1
A protocol that automatically assigns IP addresses to devices on a network.
Router DHCP server
A system that translates domain names into IP addresses.
google.com → 8.8.8.8
A server that manages network authentication and directory services.
Active Directory Domain Controller
A server that provides file storage and sharing services to network clients.
Network file share, NAS device
A server that hosts websites and web applications.
Apache, Nginx, IIS
A server that manages and stores database information.
MySQL, SQL Server, PostgreSQL
Regular maintenance performed to prevent system failures.
Cleaning, updates, inspections
Repair work performed after a system failure.
Replacing failed components
The sudden flow of electricity between electrically charged objects.
Static electricity damage to components
Firmware that initializes hardware during the boot process.
System configuration, Boot order
A type of cable with twisted pairs of wires without shielding.
Cat5e, Cat6, Cat6a cables
A type of cable with twisted pairs of wires with additional shielding.
Industrial network cables
A standardized connector used for Ethernet network connections.
Network cable connector
The process of attaching connectors to the end of cables.
Making network cables
A security system that monitors and controls network traffic.
Windows Firewall, Router firewall
The process of encoding data to prevent unauthorized access.
SSL/TLS, BitLocker
The process of verifying the identity of a user or system.
Username/password, Biometric
The process of determining what resources a user can access.
File permissions, User rights
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