Number of bytes in a KB Flashcards
1
Q
Number of bytes in a KB
A
1000 or 1024
2
Q
Description of a kilobyte (KB)
A
1024/1000 bytes
3
Q
Characteristics of solid-state storage
A
- Fairly large capacity, ever increasing
- Very fast access speed
- Very portable
- Very durable
- Reliable, although with limited read / write times
- Expensive per GB
4
Q
Description of a nibble
A
- 4 bits
* e.g. 1000, 1111,0101
5
Q
Description of a petabyte (PB)
A
1024/1000 TB
6
Q
Types of storage media
A
- Optical
- Magnetic
- Solid-state
7
Q
Number bits in a byte
A
8
8
Q
Description of a byte
A
8 bits, or 2 nibbles
e.g. 10101110, 00010110
9
Q
Description of magnetic storage
A
*the surface of a disk is magnetized
10
Q
Examples of optical storage
A
- CD
- DVD
- Blue-ray
11
Q
Description of solid-state storage
A
- Device is made of logic gates (NAND gates)
* Data is held electronically (i.e. not using moving parts)
12
Q
Description of a megabyte (MB)
A
1024/1000 KB
13
Q
Characteristics of magnetic storage
A
- Large capacities available
- Relatively cheap cost per GB
- Fairly fast read/write speeds
- Prone to damage (contains moving parts)-best used for internal (HDD) or backup storage rather than portable
- Fairly durable (can be read from/written to many times)
14
Q
Description of a terabyte (TB)
A
1024/1000 GB
15
Q
Examples of magnetic storage
A
- Hard disk drive
- Magnetic tape
- Floppy disk (now obsolete)
