BTEC IT Level 3 - Unit 1 questions and answers

What is a digital device? - correct answers Piece of physical equipment that uses digital data, such as by sending, receiving, storing or processing it. What 9 types of digital devices are there? - correct answers 1. Personal Computers 2. Mobile Devices 3. Servers 4. Entertainment Systems 5. Navigation Systems 6. Multifunctional Devices 7. Digital Cameras 8. Data capture and Collection Systems 9. Communication devices and systems What is a personal computer? - correct answers A general-purpose computing device small and cheap enough to be used by individuals. How are PCs able to perform common tasks? - correct answers By installing a new software application the computer becomes capable of performing a new function. What 3 things do PCs contain? - correct answers 1. Individual processors 2. RAM 3. hard disk components with expansion ports. What additional capabilities can be upgraded on a PC? - correct answers Replacing hard disk, more storage or adding a graphics card to an expansion port, improves graphics processing power. Give 2 examples of a PC - correct answers 1. Desktop 2. laptop How are PCs used in workplace? - correct answers Word processing, desktop publishing, spreadsheets, database management systems, creative tasks (music, film editing). How are PCs used in personal lives? - correct answers Accessing Internet, surfing the web/email, gaming (requires expensive graphics card normally) What is a server? - correct answers A computer that manages access to different resources and services over a network. How do PCs connect to a server? - correct answers Via Ethernet cable and WiFi (forming a network) What is the difference between servers and PCs? - correct answers Contain larger storage capacity, higher processing power and larger amount of memory. Give 4 examples of servers? - correct answers 1. Mail servers 2. web servers 3. print servers 4. file servers How do web servers work? - correct answers -Web server stores the web page and associated files. -Client computer makes request for a web page to server (by entering URL). -Web server locates correct files and sends back to client. Why are web servers used? - correct answers To manage access to web pages. Why are mail servers used? - correct answers To manage access to email How do mail servers work? - correct answers -When you write an email/press send on PC, goes to outgoing mail server. -This mail server then sends across a network to recipient's mail server and stores in their mailbox. -When recipient logs into their email client the mail server will forward email to their computer. Why are file servers used? - correct answers To store your files such as word processors and spreadsheets so they are accessible from any computer on the network. Why are print servers used? - correct answers To share access to a printer. How do print servers work? - correct answers By using a print server, you can send your files to print from any computer on the network. What is a mobile device? - correct answers A computing device that is designed to be portable as it is compact, light-weight and capable of running for extended periods on battery power. What key feature helps make mobile devices more compact and reduce power consumption? - correct answers System-on-a-Chip What is System-on-a-Chip? - correct answers The core components of the computer are integrated onto a single chip. (CPU, GPU and RAM) What is a disadvantage of System-on-a-Chip? - correct answers It is hard to upgrade a mobile device as all the components are integrated on the chip. What are 2 examples? - correct answers 1. Tablets 2. smartphones What are uses for mobile device? - correct answers Accessing internet on the go, playing games, calendars, email access. What is a disadvantage of mobile devices? - correct answers -They all use touchscreen so are bad for word processing tasks. -Also have limited processing capabilities so are bad for graphic games/film editing. What is an entertainment system? - correct answers Computing devices that are designed to entertain (watching tv, listening to music, playing video games) Advantages of entertainment systems? - correct answers -Good hard disk storage for storing tv/films, music and games. -Built in internet connectivity capabilities (WiFi). -Access to streaming and online gaming services. 3 examples of entertainment systems - correct answers 1. Digital media players 2. mp3 players 3. video game consoles What is the use of digital media players? - correct answers Allows us to stream digital media (films, tv) over a network. What is the use of portable media players? - correct answers Portable media players download media to device and are played off hard disk. What is the use of MP3 players? - correct answers Used to access and listen to music on a small portable device. What are MP4 players? - correct answers They are the same as MP3 players but can watch videos as well. What is the use of video game consoles? - correct answers Allow you to play video games. Can even use internet to play games online with people globally.