1.2 Memory and Storage Flashcards
1
Q
What does RAM stand for?
A
- Random Access Memory
2
Q
What does ROM stand for?
A
- Read Only Memory
3
Q
What does the term volatile mean?
A
- Data is loss if the device is off
4
Q
What does the RAM hold?
A
- Operating system
- Programs in use
5
Q
What does the ROM hold?
A
- Bootstrap
- BIOS ( basic input and output system )
6
Q
What is Moore’s Law?
A
- Every two years the average storage of devices are doubled.
7
Q
What is L1 storage?
A
- CPU
8
Q
What is L2 storage?
A
- Cache
9
Q
What is L3 storage?
A
- Main memory
- Primary memory
10
Q
What is cache?
A
- Temporary memory
- Holds frequently used instructions
11
Q
What is an advantage of cache?
A
- Fast processing speed
- Efficient
12
Q
What is a disadvantage of cache?
A
- Expensive
13
Q
What is the definition of virtual memory?
A
- Extension of RAM
- Hard disk
14
Q
What is an advantage of virtual memory?
A
- Swap space ( auto execution )
- Saves money from buying new RAM
15
Q
What is a disadvantage of virtual memory?
A
- Shortens disk life span
- Long execution
- Slow processing speed
16
Q
What is data?
A
- Information stored on a device
- Used for processes to increase efficiency
17
Q
What is primary memory?
A
- Initial processor
18
Q
What is the equation for sound files?
A
- Bytes per sample x samples per second x channels x duration
19
Q
What is the equation for picture files?
A
- Height x width x bit depth
20
Q
+10% for …
A
- Overheads
21
Q
What is secondary storage?
A
- A memory
- External of computers
22
Q
What are the properties of secondary storage?
A
- Non volatile
- Later retrival
23
Q
What is cloud storage?
A
- Internet accessed
- Data
- External
24
Q
What are the advantages of cloud?
A
- Unlimited storage
- Provided
- Available over any device
- Automatic backup
25
What are the disadvantages of cloud?
- Cyber attacks
- Power outage
- Internet access required
26
What is magnetic storage?
- Mechanical
- Moves over disk to read or write
- Concentric circles
27
What is optical storage?
- Lasers
- Light
- Pits and lands
28
What is solid state storage?
- No moving parts
29
What are the advantages of magnetic storage?
- Cheap
- High capacity
- Fast speed
30
What are the disadvantages of magnetic storage?
- Low durability
- Low portability
- Moving parts
31
What are the advantages of optical storage?
- Cheap
- Portable
32
What are the disadvantages of optical storage?
- Low capacity
- Low durability
- Slow speed
33
What are the advantages of solid state storage?
- High durability
- Fast speed
34
What are the disadvantages of solid state storage?
- Expensive
35
What are the six characteristics of secondary storage?
- Cost
- Capacity
- Durability
- Reliability
- Portability
- Speed
36
Define speed ;
- Data transferred
37
Define cost ;
- £ per GB
38
Define capacity ;
- Storage medium holds
39
Define durability ;
- Strength of medium
- Robustness
40
Define portability ;
- Transportability
41
Define reliability ;
- Resilience of medium
42
Provide an example of magnetic storage ;
- Floppy disk
- Hard drive
- Tape drive
43
Provide an example of optical storage ;
- CDs
- DVDs
- Blu Ray
