Which feature distinguishes secondary storage from primary storage?
Non-volatile long-term data storage
Which is a typical characteristic of solid state storage?
Fast read and write speeds
Which storage device uses lasers to write binary data?
Optical discs like CDs and DVDs
If you need to store many terabytes cheaply, which is best?
Magnetic hard disk drives
Why might magnetic tape be unsuitable for frequent random access?
Very slow access due to moving parts
Which device is most vulnerable to having data wiped by strong magnets?
Magnetic hard disk drives
Which statement about SSDs is true?
Faster than HDDs for most tasks
Why are optical discs considered less durable?
Prone to scratches and physical damage
How does an optical disc store and allow a laser to read binary data?
Pits and lands read back by laser
How does a magnetic hard disk write and read data?
Magnetic head changes surface magnetisation
How does flash memory store data and why do cells wear out?
Electrons trapped in floating gate structures
Why can an SSD access files faster than an HDD?
No moving parts so faster access
Why is magnetic tape typically slower than a hard disk?
Sequential access requires winding tape past head
How do scratches or damage affect optical disc reliability?
Scratches block laser reading of pits
How do moving parts in HDDs affect durability and what happens if dropped while spinning?
Moving parts lead to head crash on shock
Emma is designing a drone that must record high-resolution video and endure shocks during flight. Which storage is most appropriate?
Solid state flash storage
Carlos needs inexpensive, very high-capacity storage to archive company backups that will rarely be accessed. Which storage is most appropriate?
Magnetic tape archive storage
A photographer needs removable storage for high-speed continuous shooting and fast file transfer to a laptop. Which storage is most appropriate?
Solid state SD Card
A small home server needs lots of cheap storage for media files where speed is less critical. Which storage is most appropriate?
Hard disk drive storage
A museum wants to distribute a small, read-only multimedia exhibit on a durable physical disc for visitors to play. Which storage is most appropriate?
Optical disc storage media
Priya is designing a portable field recorder used in rough conditions with frequent drops and vibrations. Which single characteristic is most important when selecting storage?
Durability and shock resistance
A streaming service requires fast random access to deliver video with minimal buffering. Which single characteristic matters most?
High read write speed
A journalist must carry many gigabytes of footage between locations without bulky hardware. Which single characteristic is most important?
Portability and compact size
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