BTEC IT Level 3 - Unit 1 Exam Questions and Answers

BTEC IT Level 3 - Unit 1 Exam Questions and Answers What is a digital device? - AnswersPiece of physical equipment that uses digital data, such as by sending, receiving, storing or processing it. What 9 types of digital devices are there? - Answers1. 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? - AnswersA general-purpose computing device small and cheap enough to be used by individuals. How are PCs able to perform common tasks? - AnswersBy installing a new software application the computer becomes capable of performing a new function. What 3 things do PCs contain? - Answers1. Individual processors 2. RAM 3. hard disk components with expansion ports. What additional capabilities can be upgraded on a PC? - AnswersReplacing hard disk, more storage or adding a graphics card to an expansion port, improves graphics processing power. Give 2 examples of a PC - Answers1. Desktop 2. laptop How are PCs used in workplace? - AnswersWord processing, desktop publishing, spreadsheets, database management systems, creative tasks (music, film editing). How are PCs used in personal lives? - AnswersAccessing Internet, surfing the web/email, gaming (requires expensive graphics card normally) What is a server? - AnswersA computer that manages access to different resources and services over a network. How do PCs connect to a server? - AnswersVia Ethernet cable and WiFi (forming a network) What is the difference between servers and PCs? - AnswersContain larger storage capacity, higher processing power and larger amount of memory. Give 4 examples of servers? - Answers1. Mail servers 2. web servers 3. print servers 4. file servers How do web servers work? - 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? - AnswersTo manage access to web pages. Why are mail servers used? - AnswersTo manage access to email How do mail servers work? - 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? - AnswersTo store your files such as word processors and spreadsheets so they are accessible from any computer on the network. Why are print servers used? - AnswersTo share access to a printer. How do print servers work? - AnswersBy using a print server, you can send your files to print from any computer on the network. What is a mobile device? - AnswersA 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? - AnswersSystem-on-a-Chip What is System-on-a-Chip? - AnswersThe core components of the computer are integrated onto a single chip. (CPU, GPU and RAM) What is a disadvantage of System-on-a-Chip? - AnswersIt is hard to upgrade a mobile device as all the components are integrated on the chip. What are 2 examples? - Answers1. Tablets 2. smartphones What are uses for mobile device? - AnswersAccessing internet on the go, playing games, calendars, email access. What is a disadvantage of mobile devices? - 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? - AnswersComputing devices that are designed to entertain (watching tv, listening to music, playing video games) Advantages of entertainment systems? - 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 - Answers1. Digital media players 2. mp3 players 3. video game consoles What is the use of digital media players? - AnswersAllows us to stream digital media (films, tv) over a network. What is the use of portable media players? - AnswersPortable media players download media to device and are played off hard disk. What is the use of MP3 players? - AnswersUsed to access and listen to music on a small portable device. What are MP4 players? - AnswersThey are the same as MP3 players but can watch videos as well. What is the use of video game consoles? - AnswersAllow you to play video games. Can even use internet to play games online with people globally. What are navigation systems? - AnswersA 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. What features do some Navigation systems have? - Answers-Identifying traffic, roadworks and accidents that may delay your journey. -Provides an accurate destination time. What is an example of navigation systems? - AnswersIn car satnav What is the use of in car satnav? - AnswersUsed instead of traditional maps to help direct you along the fastest route. Can be integrated directly into car's dashboard but is often standalone. (e.g. TomTom) Why has standalone satnavs been replaced? - AnswersAs navigation systems are now being used in mobile devices for driving, walking, cycling. What is a multifunctional device? - AnswersA device that is capable of performing more than one specific function. (Also known as MFD and multifunctional peripherals) What are examples of a multifunctional device? - AnswersMultifunctional printers, touchscreens, force-feedback game controllers. What is a multifunctional printer? - AnswersA device that usually combines printing, scanning and faxing functions all into a single device. Where are multifunctional printers used? - AnswersThey are popular for use in home offices for people who work from home and do not have the space or money for three separate devices. What are touch screens used for? - AnswersThey are used on tablet devices to allow users to input without a separate keyboard or mouse. What are force-feedback game controllers? - AnswersThey are used on games consoles to allow you to control the game and receive vibration output. Give an example of a vibration output on a games console? - Answersrumbling in a car game when you go off track/fighting game when you're hit. What is a digital camera? - AnswersA device that is capable of taking photo and video and recording it as digital data. How does a digital camera store photos/videos as digital data? - AnswersBy using a grid of photosensors that convert light into digital pixels that our computer can store, usually on a memory card. What is a megapixel? - AnswersMegapixels is the number of individual pixels of colour that are used to record an image. The more megapixels a camera has... - AnswersThe higher the quality the image is. How many megapixels does a modern digital camera have? - Answers20 megapixels