1 Information and communication technolodgy (ICT) Flashcards
Characteristics of email: (just need to give 2 there are 5 points)
simplest form of communication, low level of reach and range when used for messaging and transferring documents, issues of security and privacy, limitations in the size of an attachment, easy to use and widespread access due to internet connections.
Advantages of email: (recall 4 there are 5) Think: Why is internet good?** Why is it better than the post? ^^ Justify your point =
Paperless society / supports sustainability. (1)
2. Documents can be attached electronically. (1)
3. Documents can be saved / edited easily. (1)
4. Convenient / easy way of communicating. (1)
5. Efficient / received almost immediately. (1)
6. Email messages less formal and they are also usually shorter and
more to the point. (1)
7. Correspondence can be managed on screen. (1)
8. Proposal can be answered / revised / stored / sent to others
without reams of paper involved. (1)
9. The reader can identify critical correspondence quickly and
dealt with it immediately. (1)
10.Quicker than posting. (1) (Do not accept quicker/cheaper/faster
as a single word answer, it MUST be qualified.)
11.Minimum running costs (1) but high set up costs. (1)
12.Cheap to send (1) only accept if qualified by bulk posting.
13.Allows rapid billing. (1)
Disadvantages of email:
SPAM
compare it to talking face to face **
-. Privacy / security issues as messages can be intercepted & read. (1)
2. Data can get lost. (1)
3. Impersonal & some messages can be misinterpreted / misread /
misunderstood. (1)
4. Limitations on size of attachments. (1)
5. Possible virus infection. (1)
6. Time wasting / spam / unsolicited junk mail. (1)
7. Not always suitable for serious business documents or
transactions requiring signatures.(1)
8. E mails can easily be ignored / allows for misunderstanding. (1)
9. Too many e-mails can lead to management problems / in-box
being overwhelmed by mail. (1)
10.Removes face to face meeting/ impersonal contact. (1)
11.Software used must be compatible between users. (1)
Give the characteristics of Electronic data interchange:
(give 4 out 6) Must have the 4 with the stars
- *relies upon a computer network
- transfers business documents e.g. purchase orders, invoices, design and manufacturing data.
- *fast, inexpensive and secure system of sending purchase orders, invoices, design and manufacturing data.
- can also be used to transmit financial information and payment in electronic form
- *a standard document format must be agreed upon by the sender and receiver
- *Uses an EDI translator which ensures that the data sent by one company is converted into a format another company can use.
Give 2 applications of EDI
e. g.1) some manufacturers will use EDI to send large and complex CAD drawings
2) Multinational companies will use it to communicate between locations world-wide e.g. Primark headquarters in Ireland to factories in east Asia.
Explain the process of EDI
1) Trading agreement is made between a company and trading partner.
2) Joint decisions are made on the standard to be used, the information to be exchanged, how and when the information is to be sent.
3) EDI translation software converts a document format into the agreed standard by wrapping the document in an electronic envelope with a identification code.
4) It is then sent to the partners mailbox
5) when it is retrieved, the EDI translator opens the envelope and translates the data from the standard form to their application’s format.
Advantages of EDI:
+saves money by eliminating the need for processing paper documents
+save time as information is transferred digitally
+improves customer service as business documents are transferred quickly with fewer error
+ Expands customer base due to improved customer service through efficient EDI
Disadvantages of EDI:
- Incompatible with some companies as wide range of standard document formats= not the solution for all communication tasks
- Standards updated regularly meaning problems occur when different ones are in use = increases lead times
- limits trading to companies with EDI = smaller market base
- initial set-up cost expensive
Give the characteristics of Integrated services digital networks:
- allows voice, data, text, graphics, music and video to be digitally transmitted over existing telephone cables.
- digital signal through the phone line instead of analogue signal= faster connection and clear transmission quality( as digital is square graph and analogue is wave= analogue more likely to be misread and slower)
- access to telecommunications network as opposed to point-to-point solutions in a phone line which means many nodes can receive information transmitted by one node
Name the 4 types of broadband?
Asymmetrical digital subscriber line Cable Wireless 3G technology Satellite
Give the characteristics ADSL: + &-
The connections work by splitting your exsisting phone line into two separate channels, one for data (Internet) and one for voice (phone calls),so more information is sent along signal, which means you can talk on the phone and be connected to the Internet at the same time. + easy to instill - downloading info. is faster than sending
Give characteristics Cable: 2+ &-
Cable made up of a bundle of optical fibres that can carry more information than a telephone cable and over longer distances and without signal quality reducing.
+easy to install
+potentially the fastest connection
-only available in large towns and cities (as investment in optical fibres isn’t viable in rural locations as fewer customers)
Give characteristics Wireless:
Wi-Fi , Radio signals used to transmit internet to the user’s computer. Broadband internet access can be provided over a larger area by placing aerials on certain houses this produces a wireless local area network.
Wireless: 2+ & 2-
+where the distance between user and router might be too far for cable.
+fast connection for downloading and sending information
- requires an experienced technology provider to supply and maintain the network
-nearby networks not used for internet access will cause interference (more of a prob in built up area)
3G and 4G
Offered by mobile phone networks allowing mobile phones and laptops to have internet wherever providing reception (so not in the lake district but yes in town)
3G and 4G: + &-
side note: you need 4G, has speeds of up to ten times faster than 3G.You don’t want to know why, Orthogonal frequency-division multiple access, it is faster wierdo science (computer science)
+internet connectivity on the go
- Restrictions to the attachments that can be opened dut to limited software on users device e.g, my mobile doesn’t have adobe flash and edit videos and games
satellite
Two types available one way and two way. One-way provides fast connection guess what one way so when downloading, to upload need to dial-up (the first ever broadband , you can’t make phone calls at the same time)
Two way- download and upload via satellite but slower both ways
satellite + & -
+ Available anywhere
- reasonably expensive
- bad weather causes connection probs.
What has ISDN and broadband (enabling high-speed communication and data transfer) allowed us to do in offices
VIDEOCONFERENCING!!!!!!!!
Give characteristics of videoconferencing:
- allows 2 or more locations to interact using two-way video and audio transmissions simultaneously, enhancing communications (multipoint videoconferencing)
- speeding up the decision-making process as no travelling to meetings
- includes video camera, speaker and microphones
- Data transferred via ISDN or broadband
- two types of videoconferencing systems: 1. dedicated systems and 2. desktop systems
Describe:
- dedicated systems
- desktop systems
1) have all the required components packaged into a single console, including high quality remote controlled camera
2) are add-ons to personal computer: webcam, microphone transforming them into video conferencing
(this is so old news)
