Hardware & Peripherals
What connector is most commonly used to connect modern monitors to PCs?
HDMI or DisplayPort
What operating system do iPhones use?
iOS
What is the first step in the CompTIA troubleshooting model?
Identify the problem
What does LAN stand for?
Local Area Network
Which operating system is most common for enterprise workstations?
Windows
Which memory type is volatile and stores active data?
RAM (Random Access Memory)
Which mobile component allows tap-to-pay transactions?
NFC (Near Field Communication) chip
A PC won’t boot – what’s the first hardware thing to check?
Power connections / Power supply
What are the two most common Wi-Fi frequency bands?
2.4 GHz and 5 GHz
What command checks network connectivity in Windows?
ping
Name two types of storage drives.
HDD (Hard Disk Drive) and SSD (Solid-State Drive)
What is the main difference between tablets and laptops?
Tablets don’t have a built-in keyboard (touchscreen only), laptops do
What do 3 short beeps during POST often mean?
RAM failure (varies by BIOS, but RAM issues are most common)
Which device connects multiple networks together?
Router
A computer is slow after startup – what tool shows startup applications?
Task Manager
What form factor is most common for desktop motherboards?
ATX
Name two methods of mobile device synchronization.
USB cable, Wi-Fi, Bluetooth, or Cloud Sync
A PC overheats quickly – name two possible causes.
Dust buildup, bad fans, poor ventilation, failed heatsink/thermal paste
What is the difference between TCP and UDP?
TCP is connection-oriented and reliable; UDP is connectionless and faster but less reliable
What should you do if an app won’t install on Windows?
Check compatibility, permissions, and disk space
Which expansion slot is used for modern graphics cards (GPUs)?
PCIe x16 (Peripheral Component Interconnect Express)
Which port is being phased out on many mobile devices?
3.5 mm headphone jack
How do you test a suspected failing PSU?
Use a PSU tester or multimeter
Which cable type supports the longest distances in networking?
Fiber optic cable
Which Windows tool lets you roll back a bad system update?
System Restore