ict

Question 1

what are multi-functional devices

Answer 1

Multifunctional devices are devices which have different functions so they can be used for different purposes

Question 2

what are personal computers?

Answer 2

A personal computer can be either a Laptop or or Desktop
Personal computers can be inexpensive computer for people to use on a daily basis .

Personal computers can have different data storage size because some desktops can have upto 1TB of hard drive

Question 3

what are mobile devices

Answer 3

A mobile device is a device which will enable a individual to do many things which they would be able to do on a tablet or a laptop such as write emails to people. video call them play games and many more.

Mobile devices have new features which allow individuals to gain access to their mobile phones by inputting data of their face and this will allow the phone to do a process called facial recognition where the person will be able to get into their phone by scanning their face.

Question 4

what are servers

Answer 4

servers are powerful computers

Question 5

What are digital cameras

Answer 5

Digital cameras capture images and videos digitally using a image sensor which allows the camera to store them

Question 6

What are navigation systems?

Answer 6

Navigation systems use a gps which then locates where the person is and what the location they are going to.

Question 7

What communication devices and systems ?

Answer 7

these devices can send / receive analogue or dialogue data.

Question 8

what are data capture / collection systems ?

Answer 8

these devices collect and input data through automated systems . a epos updates stock levels.

Question 9

The use of education/training

Answer 9

Digital devices can be used for many different things in education such as it can be used for research for assignments.
they can be used because if a student is far away then they will be able to access their work.

Question 10

The use of personal in digital devices

Answer 10

Digital devices can help people in many ways because it can helping with gaming , you can do online banking , and listen to music.

Question 11

The use of social in digital devices

Answer 11

people are able to use digital devices for social networking such as snapchat, you can use messenger apps to email. And you can use voip.

Question 12

the use of retail in digital devices

Answer 12

people can use digital devices for retail to do things such as Online shopping, Stock checking , recording sales and data numerical modelling.

Question 13

what are input devices

Answer 13

Input devices are the devices which allows you to input data then it appears on the screen .

Question 14

what are output devices

Answer 14

output devices these are devices which outputs a image and you can see them for example a monitor is a output device.

Question 15

hard disk drives

Answer 15

Adv’s- large storage capacity this will allow more information to be saved. there’s a low cost on a per byte basis.

Dis adv’s- slower than SSD’S ,external HDD’s are not possible.

Question 16

solid state drives

Answer 16

adv’s - very fast data read , low power consumption, very reliable.
disadv’s - higher cost than HDD’S on a per byte basis , only have certain amount of writes.

Question 17

SD cards

Answer 17

Adv’s - very small/portable easy to transfer.

Disadv’s- very small capacity.

Question 18

Usb Memory sticks

Answer 18

Advantages: Extremely portable device, Compatible with most systems.
Disadvantages ,they can be lost easily because they’re small.

Question 19

type of operating systems

Answer 19

rtos - real life operating system this is where the inputs are processed and responded to instantly, provides fats time responses .
Single user single task operating systems , one user can use the system at a time and only one application can run at a time.

Question 20

Type of operating systems

Answer 20

single user multi-tasking operating systems only one user can use at a time but many applications can run. Multi user operating systems- many users can use the systems at same time and run many applications.

Question 21

User interfaces

Answer 21

CLI( Command line interface)
The CLI is more appropriate for experienced users because they find it quicker.
GUI(Graphical user interface) - simple method of interacting because it’s easy for beginners to use to do their tasks.

Question 22

Utility software

Answer 22

File compressors back up very large files , and if a person uses file compressors this can be difficult to share.
Backup- This is where you regularly back up your files incase the computer stops this is a slow/manual process.
Disk defragementer- Over a time the computer disk becomes fragmented which slows files access.
Network utilities - maintains a good network traffic and keep networks secure
Firewalls- open networks which are at risk from threats like hackers/worms. prevents unauthorized access by monitoring and blocking suspicious traffic.
Antivirus- this prevents computers form receiving viruses/ and it detects and removes viruses which have infected the system.

Question 23

application software

Answer 23

there are two different types of application source , proprietary and open source and these have many different features which are better than others in some ways , for example oss is normally free . however there isn’t fast responses when you might require them

Question 24

Different file types

Answer 24

Image file types - GIF- small file size but low quality due to limited number of colours can display basic transparency and animation. Jpg- good compression although compression is lossy so files cant be decompressed .
Bmp- a uncompressed file format so image quality is extremely high but file size is huge . Png - uses lossless compression to save high quality images in a low file size .
Application software file types- DOC/RTF commonly used file formats for documents created using a certain software. Pdf - a format which represents data independence of the originating software/ or the hardware.

Question 25

Choosing an it system

Answer 25

User experience needs,
Is the user experienced with computer systems , or they do need a easy to use system
whats the use / need
Specification
Does the system meet the requirement
will the system work with other devices
can It system use the required technology.
Cost
Budget
Efficiency and productivity
is efficiency a key issue of the system, does the user need to be highly productive.
Implementation
What is the timescale for the IT system to be implemented , need to be available quickly

Question 26

Wired connection methods

Answer 26

CAT 5
Telephone communications and ethernet networks
Advantages
Versatile and widely available
Cheap compared to other networking operations .
Disadvan’s
Only useful over short distances
Coaxial
All types of data ,communication were all used in television cabling.
Adv’s
Less susceptible to interference than UTP/STP so they are able to work over longer distances.
Disadv’s