Which of these is an external component?
- CPU
- Graphics card
- Keyboard
- Power supply unit
CPU stands for ________ processing unit.
- Computer
- Calculator
- Core
- Central
A desktop computer will have a PSU. What does PSU stand for?
- Permanent Storage Unit
- Primary Switch Unit
- Power Supply Unit
- Probable Space Unit
Which type of device is a microphone?
- Input
- Processing
- Storage
- Output
Which storage type is the fastest for accessing data?
- Hard Disk Drive (HDD)
- Solid State Drive (SSD)
- Blu-ray Disc
- USB Flash Drive
SD cards are an example of ______ storage.
- Optical
- Solid state
- Flash memory
- Magnetic
Which of the following is both an input and output device?
- Scanner
- Microphone
- Touchscreen
- Headphones
How many instructions per second can a 2 GHz, dual-core CPU process?
- 2 billion
- 4 billion
- 6 billion
- 8 billion
Memory sticks are an example of ______.
- Optical
- Solid state
- Flash memory
- Magnetic
Which type of storage is accessed using a laser?
- Optical discs
- Magnetic disks
- Flash memory
- Solid state
