ICT Chapter 3 [Storage devices and media]

what are 3 advantages of using hard disk drives

Very fast data transfer

high storage capacity

cheaper for larger amounts of data

what are 3 disadvantages of using hard disk drives

fixed hard disks cannot be transferred between computers

many moving parts

can be easily damaged

what are 3 uses for fixed hard disk drives

store operating system

store application software

used in real time systems

what are 2 uses for portable hard disk drives

used to back up systems

used to transfer files or software

what are 3 advantages of using portable hard disk drives

can be attached to any computer with usb

large storage capacity

very fast data access and transfer

what are 3 disadvantages of using portable hard disk drives

danger of virus

can be easily damaged

more expensive than other removable forms of media

what are 3 uses of magnetic tapes

used for backups for file servers

store large amounts of payroll records'

used in batch processing applications

what are 3 advantages of using magnetic tapes

less expensive

robust

data transfer is fast

what are 3 disadvantages of using magnetic tapes

updating files requires a new tape

special drive needed to read and write data to them

not suitable for applications which require fast access to data

what are 2 uses of CD-ROM and DVD-ROM

store music files, software and computer games

used in applications to avoid overwriting or deleting the data

what are 2 advantages of using CD-ROM and DVD-ROM

Cheaper to buy

data cannot be overwritten nor erased once written

what are 2 disadvantages of using CD-ROM and DVD-ROM

Data transfer is slower when compared to hard disk drives

data access time is greater than hard disk drives

what are CD-R and DVD-R

R means that the disk is recordable only once and it then becomes a CD-ROM / DVD-ROM once it has finalised which also means that the CD/DVD cannot have additional data to be written into it