Flashcards
Starting from CODEC
Flashcards do conjunto (23)
- 1What is codec?This program is used, where necessary, to digitize an analogue voice signal, then compress it and split it into internet packets for transmission.
- 2What is simplex transmission?sends data in one direction only.
- 3What is half duplex transmission?allows two-way transmissions but the devices don’t transmit at the same time.
- 4What is full duplex transmission?allows two-way communication at the same time.
- 5What is an example of simplex transmission?A radio broadcast
- 6What is an example of half duplex transmission?It will send a message to the control computer, which will respond with new settings, but they both cannot send messages at the same time
- 7What is an example of full duplex transmission?The telephone system
- 8What is VOIP?VoIP is a group of internet protocols which provide a means of sending voice and
multimedia communication over the internet rather than by public telephone networks.
- 9What are wireless networks?Wireless networks are another means by which data can be exchanged between a
computer and a network, including the internet.
- 10What is bi-directional transmission?Bi-directional transmission has several meanings within data communication, but it
is essentially about transmitting in both directions.
- 11What is a universal serial bus?a serial transmission method which was introduced to make many of the connections to a computer look the same.
- 12What are 2 advantages of 'client side processing'?Speed and Security
- 13what is client side processing?client-side processing is the use of a scripting language to create code on web pages which provides interactivity.
- 14What are the 2 disadvantages of client side processing?Computer speed & it is browser specific
- 15What is server side processing?Server-side processing involves the use of scripts which reside and are run on another computer on the internet (the web server).
- 16What are the benefits for server side processing?Speed, Efficiency & Browser Independant
- 17what are the disadvantages of server side processing?Security & Overloading
- 18What is a databaseA database is a system for managing a collection of data.
- 19Name the four databases.Text, Number, Date/Time, Logical
- 20What is an online database?Databases which are accessible using a network.
- 21What are the 5 types of threats?opportunist threats, computer viruses, other malware, Phishing, Accidental damage.
- 22What is phishing?Attempts to gain access to passwords,
financial details and other such privileged information.
- 23—
Informações
- Descrição
- GCSE ICT FlashCards sobre Starting from CODEC, criado por RT28033 em 19-11-2015.
- Criado por
- RT28033 · nov 2015
- Atualizado
- 19 fev 2016
- Visualizações
- 14
- Avaliação