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AIT > Managing Data > Flashcards

Managing Data Flashcards

1
Q

Define Bit

A

basic unit of data

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2
Q

how many bites in a byte

A

8

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3
Q

how many bytes in a kilobyte

A

1000 bytes

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4
Q

how many kilobytes in a megabyte

A

1000 KBs

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5
Q

how many kilobytes in a gigabyte

A

1000 KBs

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6
Q

how many gigabytes in a terabyte

A

1000 GBs

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7
Q

how much storage in a HDD

A

1-4TB

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8
Q

how much storage in a RAM

A

8-32GB

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9
Q

how much storage in a SSD

A

512gb - 1TB

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10
Q

how much storage in a CD

A

700MB

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11
Q

how much storage in a DVD

A

4.7GB

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12
Q

how much storage in a BluRay

A

25GB

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13
Q

What are the 3 methods of reducing file sizes

A

Compression
Resampling (images)
Cropping (images)

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14
Q

Define Compression & 3 advantages

A

Reducing the file size of your data

-Save disk space on your device
-Faster to upload to internet for use on website. Others can -then download it faster.
-Faster to transfer data (to servers, HDDs, USB drives etc)

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15
Q

list the 2 types of compression

A

Lossy & Lossless

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16
Q

define lossy & list 2 examples

A

Reduces a file size by permanently eliminating certain information. When compression is complete, only a part of the original information is still there. This information cannot be recovered.

-JPEG is an image lossy format
- MP3 is an audio lossy

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17
Q

define lossless compression & list 2 examples

A

When a file size is reduced without sacrificing any significant information.

-PNG is an image format that provides lossless compression.
- Wav is a lossless audio format

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18
Q

Name 2 other techniques of reducing file sizes

A

-Resampling
- Cropping

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19
Q

Define Resampling

A

is the technique used to create a new version of the image with a different width and/or height in pixels.

20
Q

Define cropping

A

It simplymeansyou have cropped (removed) a portion of the image but not resized it

21
Q

Best file format for images online

A
  • JPEG
  • PNG
22
Q

What colour mode is online images going to be

A

RGB

23
Q

What colour mode is print images going to be

A

CMYK

24
Q

how much DPI for online images

A

72 dpi

25
Q

how much dpi for print images

A

300 dpi

26
Q

define cloud computing

A

Cloud computing is the on-demand availability of computer system resources, over the internet. This can be data storage or computing power.

27
Q

what do you need for cloud computing

A
  • an internet connection
  • a username and password (subscription)
    accepting a user agreement
  • Your own device
28
Q

list 4 examples of cloud computing

A

-Google Drive,
-OneDrive (Microsoft)
-Dropbox,
-iCloud,

29
Q

list some advantages & disadvantages of cloud storage

A

Advantage:
-Flexible Plans
-Lower Costs – no hardware/maintenance required
-Can be accessed anywhere from different devices
-Can be accessed by anyone with permission
Disadvantages:
-Security risks
-Data is handed over to another company
-Requires internet connection (stable)
-If the Cloud company has issues, you are affected

30
Q

Define Cloud Software

A

Also cloud computing, these are applications that you can use on the internet.

31
Q

List some examples of cloud software

A
  • Stadia
  • GeForce
  • Wix
  • Pixlr
32
Q

list some advantages & disadvantages of cloud software

A

Advantage:
-Can be used from any device with an up to date internet browser
-Always have the latest version
-Isn’t as hardware intensive
-Easy to collaborate on work

Disadvantages:
-Often less features than traditional application software (photoshop vs Pixlr)
-Requires an internet connection
-Site downtime
-Security issues

33
Q

Define system utility tools

A

Utility software is designed to help analyse, configure, optimize or maintain a computer.

34
Q

List all 4 examples of utility software

A

-Disk Cleanup
-Delete Temporary Internet Files / Internet Cache
-Disk Defragmentation
-Anti-Virus/Malware/Spyware

35
Q

Define disk clean-up & list 1 advantage

A

You can use Disk Cleanup to reduce the number of unnecessary files on your drives. It removes temporary, cache and log files created by the operating system and other programs (not your documents)

The advantage is the creating more storage space, and increasingthe speed of your PC.

36
Q

Define Delete Temporary Internet Files / Internet Cache

A

Temporary Internet Files is a folder that serves as a browser Cache.
Cached files allow websites to load faster when they are re-visted because certain files have temporarily been saved.

37
Q

Define Disk Defragmentation

A

Disk Defragmenter software is designed to increase the access speed of files by rearranging files stored on a disk. Disk Fragmentation happens over time as you save, change, or delete files.
Disk Defragmenter rearranges the data on your disk and reunites fragmented data so your computer can run more efficiently.

38
Q

Define Anti-Malware/virus/spyware scanner

A

This is software that scans, detects and removes malicious software. It detects malicious software by a comparing a specific set of code in your systems files against known sets of malicious code, stored in the anti-malware database.

39
Q

List some examples of Anti-Malware/virus/spyware scanner

A
  • McAfee
  • Norton
  • AVG
40
Q

Define Version Control

A

is a system that records changes to a file or set of files over time so that you can recall specific versions later.

41
Q

List the advantages of Version Control

A
  • Making changes with confidence. It allows you to revert to a previous version when needed.
  • Understanding who made a change and when it happened.
  • Important for teamwork. It should be consistent within a team or organisation.
42
Q

How many Megabytes in a Terabyte

A

1000000 MBs in a terabyte

43
Q

how much storage in a 3 ½ in Floppy

A

1.44MB

44
Q

how much storage in a 5 ¼ in Floppy
in Floppy

A

110KB

45
Q

what other features can lossless compression do

A

You can also zip files up to reduce the file size.
This allows you to compress multiple files into a single zipped file.

AIT (6 decks)

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