BTEC IT Level 3 - Unit 1 Exam with Complete Solutions

What is a digital device? - ANSWER-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? - ANSWER-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? - ANSWER-A general-purpose computing device small and cheap enough to be used by individuals. How are PCs able to perform common tasks? - ANSWER-By installing a new software application the computer becomes capable of performing a new function. What 3 things do PCs contain? - ANSWER-1. Individual processors 2. RAM 3. hard disk components with expansion ports. What additional capabilities can be upgraded on a PC? - ANSWER-Replacing hard disk, more storage or adding a graphics card to an expansion port, improves graphics processing power. Give 2 examples of a PC - ANSWER-1. Desktop 2. laptop How are PCs used in workplace? - ANSWER-Word processing, desktop publishing, spreadsheets, database management systems, creative tasks (music, film editing). How are PCs used in personal lives? - ANSWER-Accessing Internet, surfing the web/email, gaming (requires expensive graphics card normally) What is a server? - ANSWER-A computer that manages access to different resources and services over a network. How do PCs connect to a server? - ANSWER-Via Ethernet cable and WiFi (forming a network) What is the difference between servers and PCs? - ANSWER-Contain larger storage capacity, higher processing power and larger amount of memory. Give 4 examples of servers? - ANSWER-1. Mail servers 2. web servers 3. print servers 4. file servers How do web servers work? - ANSWER--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? - ANSWER-To manage access to web pages. Why are mail servers used? - ANSWER-To manage access to email How do mail servers work? - ANSWER--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? - ANSWER-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? - ANSWER-To share access to a printer. How do print servers work? - ANSWER-By using a print server, you can send your files to print from any computer on the network. What is a mobile device? - ANSWER-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? - ANSWER-System-on-a-Chip What is System-on-a-Chip? - ANSWER-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? - ANSWER-It is hard to upgrade a mobile device as all the components are integrated on the chip. What are 2 examples? - ANSWER-1. Tablets 2. smartphones What are uses for mobile device? - ANSWER-Accessing internet on the go, playing games, calendars, email access. What is a disadvantage of mobile devices? - ANSWER--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? - ANSWER-Computing devices that are designed to entertain (watching tv, listening to music, playing video games) Advantages of entertainment systems? - ANSWER--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 - ANSWER-1. Digital media players 2. mp3 players 3. video game consoles What is the use of digital media players? - ANSWER-Allows us to stream digital media (films, tv) over a network. What is the use of portable media players? - ANSWER-Portable media players download media to device and are played off hard disk. What is the use of MP3 players? - ANSWER-Used to access and listen to music on a small portable device. What are MP4 players? - ANSWER-They are the same as MP3 players but can watch videos as well. What is the use of video game consoles? - ANSWER-Allow you to play video games. Can even use internet to play games online with people globally. What are navigation systems? - ANSWER-A digital device that uses GPS (Global Positioning System) to provide a real-time map of our current location, allowing us to plan a route to be directed to a chosen destination.