COMPUTER HARDWARE COMPONENTS FUNCTIONS
EXTERNAL AND INTERNAL STORAGE DEVICES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
DVD
|
|
|
Flash memory
|
|
|
Internal hard disk
|
|
|
External hard disk
|
Detailed explanation-1: -A single layer DVD can store about 4.7Gb of data. A double layer DVD can hold over 9Gb of data. One problem with the DVD is that the different companies which make them have not agreed on a standard format. Because of this, you will see various kinds of DVD disks for sale: DVD-R, DVD+R, DVD-RW and DVD+RW.
Detailed explanation-2: -A standard single-sided, one-layer DVD can hold 4.7 gigabytes of data and 8.5 GB if it’s a double-layer disc. A single-layer HD-DVD stores up to 15 GB of storage capacity, and a dual-layer disk provides up to 30 GB.
Detailed explanation-3: -Dual layer and double layer DVDs are the same thing and are also referred to as DVD-9 discs and have a capacity of 8.5GB.
Detailed explanation-4: -Digital versatile disc (DVD). A single-layer DVD can hold 4.7 gigabytes (GB) of data, and a double-layer disc can hold 8.5 GB.
Detailed explanation-5: -Double-sided/Double-layer This is because when a disc is made with two layers, the pits have to be a little longer, on both layers, than when a single layer is used. This helps to avoid interference between the layers, which would cause errors when the disc is played.