External Hardware Devices (AQA A-Level Computer Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Why are CMOS sensors increasingly used in modern digital cameras?
Why are CMOS sensors increasingly used in modern digital cameras?
They consume less power & are cheaper
What is the main advantage of RAW image files over JPEG files?
What is the main advantage of RAW image files over JPEG files?
RAW preserves all sensor data for editing
How do barcode readers distinguish between black bars and white spaces?
How do barcode readers distinguish between black bars and white spaces?
White reflects most light, black absorbs it
What is the main difference between active and passive RFID tags?
What is the main difference between active and passive RFID tags?
Active tags have batteries, passive don't
Which application commonly uses RFID technology?
Which application commonly uses RFID technology?
Contactless payment cards
Why does paper feel warm when it exits a laser printer?
Why does paper feel warm when it exits a laser printer?
The fuser applies heat to melt toner
What does CMYK stand for in colour laser printing?
What does CMYK stand for in colour laser printing?
Cyan, Magenta, Yellow, Black
What are the concentric circles on a hard disk surface called?
What are the concentric circles on a hard disk surface called?
Tracks
How much faster can SSDs access data compared to HDDs?
How much faster can SSDs access data compared to HDDs?
Up to 100 times faster
Which storage type is best for small-scale home backups that need to be portable?
Which storage type is best for small-scale home backups that need to be portable?
Optical disks