Question

1. which of the following is true about an internal hard disk? variable amount of storage often stores the operating system portable slow 19. ______ programs scan files for ways to reduce the amount of required storage. file compression disk caching file decompression data caching 20. these discs have a capacity of 50 gigabytes on one side. hd dvd cd dvd blu - ray

Explanation:

1. An internal hard - disk often stores the operating system. Its storage capacity is fixed for a particular disk, it is not portable as it is installed inside a computer, and speed can vary but it's not inherently slow.
2. File compression programs scan files to reduce the required storage space. Disk caching and data caching are about improving access speed, and file decompression is the reverse of reducing storage.
3. Blu - Ray discs can have a capacity of 50 gigabytes on one side. HD DVD has lower capacity, CD has much lower capacity (700 MB approximately), and standard DVD has 4.7 - 8.5 GB capacity.

Answer:

1. Often stores the operating system
2. File compression
3. Blu - Ray