What to focus on first
- Learn what key PC parts do before trying to memorize model names.
- Follow a clear troubleshooting process: identify, test, fix and confirm.
- Understand common network basics such as IP addresses, DNS and wireless security.
- Practice safe working habits and protect users’ private information.
- The short drills here are not a full version of either official Core exam.
Topics in this course
Hardware
Understand the CPU, RAM, storage and power supply. Know which problems each part can cause, and check basic connections first.
Networks
Learn what DNS, DHCP, IP addressing and Ethernet do. Practise separating a network connection problem from a name-resolution problem.
Operating systems
Review what an operating system manages, including files, devices and updates. Changes should protect existing user data.
Troubleshooting
Follow a repeatable order: gather symptoms, test simple causes, choose a fix, confirm the result and record what happened.
Security basics
Lock devices, use unique passwords and MFA, and recognize social engineering. Back up important data before risky repairs.
Sample practice with explanations
Which component holds working data while a computer is powered on?
Correct answer: RAM
RAM provides fast temporary memory; stored data is lost when power is removed.
What is a common purpose of an SSD?
Correct answer: Store files and the operating system
An SSD keeps data when a computer is turned off.
A PC has no power. Which basic check should come first?
Correct answer: Check the power source and cable
Start with simple and likely causes before replacing expensive parts.
Which service normally turns a domain name into an IP address?
Correct answer: DNS
DNS resolves names such as example.com to network addresses.
Which connection is commonly used for a wired local network?
Correct answer: Ethernet
Ethernet is widely used for wired network connections.
What is the purpose of an operating system?
Correct answer: Manage hardware and run applications
The OS helps applications use computer resources.
A laptop display is dark but the PC runs. What should you check early?
Correct answer: Brightness and external display settings
Simple display settings can be responsible for a blank screen.
Check the official source
Original beginner drills; check current CompTIA Core exam objectives before booking.