ICT UNIT 3 WJEC

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Flashcards on ICT UNIT 3 WJEC, created by sophie mg on 11/05/2016.
sophie mg
Flashcards by sophie mg, updated more than 1 year ago
sophie mg
Created by sophie mg over 8 years ago
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INPUT DEVICES >WEBCAM >MICROPHONE >GRAPHICS TABLET >MOUSE
WHAT IS AN MP3 >COMPRESSED SOUND FILES >FILES ARE QUICK TO TRANSFER
WHAT IS AN MIDI AND WHAT IS ITS PURPOSE? AN MIDI IS A MUSICAL INSTRUMENT DIGITAL INTERFACE ITS PURPOSE IS TO ALLOW INSTRUMENTS TO COMMUNICATE WITH EACH OTHER CONNECTED THROUGH A COMPUTER WHICH ALLOWS YOU TO EDIT, SAVE AND PLAYBACK
WHAT IS A STAR NETWORK? NAME ITS ADVANTAGES AND DISADVANTAGES IN A STAR NETWORK EACH DEVICE HAS ITS OWN CABLE THAT CONNECTS TO A HUB ADVANTAGES: >VERY RELIABLE IF ONE DEVICE BREAKS DOWN THE OTHERS CONTINUE TO WORK >HIGH PERFORMING BECAUSE NO DATA COLLISIONS CAN OCCUR DISADVANTAGES: >EXPENSIVE TO INSTALL >IF A HUB FAILS ALL CONNECTION TO DEVICES WILL HAVE NO CONNECTION
WHAT IS A RING NETWORK? NAME ITS ADVANTAGES AND DISADVANTAGES IN A RING NETWORK EACH NETWORK IS CONNECTED TO TWO OTHER DEVICES ADVANTAGES: >TRANSFERS DATA QUICKLY BECAUSE THERE IS NO DATA COLLISIONS DISADVANTAGES: >IF THE MAIN CABLE FAILS THEN THE WHOLE NETWORK WILL FAIL
WHAT IS A BUS NETWORK? NAME ITS ADVANTAGES AND DISADVANTAGES A BUS NETWORK IS WHEN ALL DEVICES ARE JOINED TO ONE CABLE ADVANTAGES: >EASY TO INSTALL >QUITE CHEAP TO INSTALL BECAUSE IT DOESN'T REQUIRE MUCH CABLE DISADVANTAGES: >IF THE MAIN CABLE FAILS THE WHOLE NETWORK FAILS >THE MORE WORKSTATIONS THE SLOWER THE NETWORK AS THERE ARE MORE DATA COLLISIONS
WHAT IS THE INTRANET? THE INTRANET IS A PRIVATE NETWORK USUALLY USED BY COMPANIES
WHAT IS THE EXTRANET? THE EXTRANET IS THE SAME AS AN INTRANET HOWEVER IT CAN BE ACCESSED FROM PEOPLE OUTSIDE THE COMPANY
NAME THIS INTERFACE AND ITS ADV&DISADV COMMAND LINE INTERFACE IT ALLOWS A USER TO INTERACT WITH A COMPUTER USING COMMANDS ADV-THEY CAN RUN MANY PROGRAMMES, LITTLE STORAGE SPACE NEEDED DISADV-INEXPERINCE USER WILL FIND THE INTERFACE HARD TO USE
WHAT IS THIS INTERFACE AND IT'S ADV AND DISADV MENU-DRIVEN INTERFACE ADV-NO NEED TO LEARN A LOT OF COMMANDS SO IT IS IDEAL FOR BEGINNERS DISADV-POOR DESIGNED INTERFACE CAN BE SLOW
WHAT IS THIS INTERFACE & ITS ADV AND DISADV GRAPHICAL USER INTERFACE (GUI) ADV-EASY TO NAVIGATE DISADV-TAKES UP A LOT OF MEMORY
ADVANTAGES OF VOICE RECOGNITION >SPEECH INPUT IS MUCH FASTER THAN TYPING >NO NEED TO LEARN TO TYPE >FASTER TO ISSUE COMMANDS
DISADVANTAGES OF VOICE RECOGNITION >TAKES TIME FOR A COMPUTER TO UNDERSTAND THE WAY A PERSON SPEAKS >BACKGROUND INTERFERENCES >CAN'T USE IN QUIET ENVIRONMENTS LIKE A LIBRARY >MAY NOT RECOGNISE WORDS THAT SOUND THE SAME E.G TWO TO
TWO ADVANTAGES OF USING ICT SYSTEMS TO STORE AND PROCESS DATA >DATA IS EASILY SHARED >DATA IS EASIER TO BACK UP >DATA CAN BE EDITED MORE EASILY
TWO DISADVANTAGES OF USING ICT SYSTEMS TO STORE AND PROCESS DATA >LOSS OF DATA DUE TO POWER CUTS >COPYRIGHT ISSUES >RELIANCE ON NETWORKS, NETWORK MAY FAIL >SECURITY ISSUES- VIRUSES >HACKING
WHAT IS THE PERSISTANCE OF VISION? WHEN THE HUMAN EYE CONTINUES TO SEE THE IMAGE AFTER ITS DISAPPEARED FOR SHORT AMOUNT OF TIME
NAME THE ANIMATION TECHNIQUE THAT IS USED TO GENERATE THE INBETWEEN FRAMES TWEENING
NAME THE ANIMATION TECHNIQUE THAT IS USED TO TRACK THE FRAME-BY-FRAME MOTION OF AN OBJECT ONION SKINNING
WHAT IS ROTOSCOPING? TRACING OR DRAWING AROUND THE IMAGE
WHAT IS STOP MOTION MAKING A SLIGHT CHANGE TO A FRAME SO WHEN YOU PLAY THE ANIMATION BACK IT APPEARS AS IF THE IMAGE IS MOVING
GIVE 3 SERVICES AVAILABLE AT AN ATM >CASH >CHECK BALANCE >CHANGE PIN NUMBER >TRANSFER MONEY
GIVE TWO ADVANTAGES OF AN ATM TO THE CUSTOMER >PROVIDES 24 HOUR SERVICE >ACCESS THEM AT MANY LOCATIONS >CUTS DOWN QUEUES IN BANKS SO ITS FASTER FOR THE CUSTOMER
GIVE TWO ADVANTAGES OF AN ATM TO THE BANK >SAVES ON STAFF COST >ALLOWS STAFF TO CONCENTRATE MORE ON OTHER WORK >SAVES ON BUILDING COSTS
WHAT IS A HTML A HTML IS A LANGUAGE USED TO CREATE A WEBPAGE
WHAT IS THE UNIQUE ADDRESS FOR EVERY WEBSITE ON THE INTERNET CALLED? URL
IN ORDER TO ALLOW PEOPLE TO VIEW A WEBSITE OVER THE INTERNET IT MUST BE.. HOSTED ON A WEBSERVER
WHAT IS MEANT BY A HOTSPOT? IT IS AN IMAGE OR AREA USED TO LINK YOU TO A WEBPAGE
HOME PAGE? MAIN/FIRST PAGE OF A WEBSITE
HYPERLINK? A LINK THAT DIRECTS A USER FROM ONE PART OF A WEBSITE TO ANOTHER OR ONE WEBPAGE TO ANOTHER
LEADERBOARD? A BANNER USED FOR ADVERTISING
WHAT IS THE PURPOSE OF THE GOLDEN TRIANGLE? TO ENSURE THE WEBSITE GETS AS MUCH VISITORS AS POSSIBLE BECAUSE IT IS THE PLACE WHERE MOST PEOPLE LOOK FIRST
WHAT IS A STORY BOARD? A STORY BOARD IS A PLAN WHICH INVOLVES A SCENE BY SCENE DISCRIPTION FOR AN ANIMATION
STATE 5 PRINCIPLES OF THE DATA PROTECTION ACT >DATA MUST BE ACCURATE AND KEPT UP TO DATE >DATA MUST BE DELETED WHEN NO LONGER NEEDED >DATA MUST BE ADEQUATE, RELEVANT AND NOT EXCESSIVE >DATA MUST BE FAIRLY AND LAWFULLY PROCESSED >DATA MUST NOT BE TRANSFERRED OUTSIDE EU COUNTRIES WITHOUT ADEQUATE PROVISON
STATE TWO EXEMPTIONS OF THE DPA (DATA PROTECTION ACT) >IF IT PREVENTS CRIME >PERSONAL DATA THAT CONSISTS OF EDUCATIONAL RECORDS >PERSONAL DATA RELATING TO A PERSONS PHYSICAL OR MENTAL HEALTH >ADOPTION RECORDS
STATE A CRIME BY THE COMPUTER MISUSE ACT AND DECRIBE THE CONSEQUENCE AND A METHOD OF PREVENTION >HACKING, INDETITY THEFT, ENCRYPTION >FRAUD, FINANCIAL LOSS, ANTI-SPYWARE SOFTWARE
NAME 3 RECENT DEVELOPMENTS OF ICT SYSTEMS HAVING AN IMPACT ON HOW PEOPLE WORK >WIFI >VIDEO CONFERENCING >TABLETS >TELEWORKING
LIST THE ADVANTAGES AND DISADVANTAGES OF ICT SYSTEMS HAVING AN IMPACT ON WORK FOR THE EMPLOYEES ADVANTAGES: >LESS TIME AWAY FROM HOME >GREENER, LESS POLLUTION >IDEAL FOR DISABLED DISADVANTAGES: >LESS FACE TO FACE CONTACT >SOME TELEWORKERS ARE PAID LESS THAN OFFICE WORKERS >WEAK SIGNALS CAN MAKE IT HARD
ADVANTAGES AND DISADVANTAGES TO THE EMPLOYER ADVANTAGES: >SAVES OFFICE SPACE >MEETINGS CAN BE HELD ANYWHERE IN THE WORLD DISADVANTAGES: >LOSS OF PERSONAL CONTACT WITH EMPLOYEES >INITIAL COST OF SETTING UP EQUIPMENT AT HOME
WHAT ARE THE FOUR FEATURES OF A GUI 'WIMP' >WINDOWS >ICONS >MENUS >POINTERS
ADVANTAGE OF BIOMETRICS UNIQUE TO EACH INDIVIDUAL
TOUCH SENSITIVE SAVES WORK SPACE AS NO KEYBOARD OR MOUSE ARE REQUIRED
WHAT IS A SWITCH? A SWITCH LOOKS AT EACH PACKET OF DATA AND SENDS IT TO THE COMPUTER IT WAS INTENDED FOR
WHAT IS A GATEWAY? A GATEWAY LINKS TO DIFFERENT NETWORKS (E.G LAN AND WAN)
WHAT IS A BRIDGE? A BRIDGE LINKS TO SIMILAR NETWORKS (E.G LAN TO LAN)
TWO ADVANTAGES OF COMPUTER NETWORKS OVER STANDALONE COMPUTERS >SHARE SOFTWARE >SHARE HARDWARD >EASY TO MONITOR THE NETWORK ACTIVITY >CAN ACCESS WORK FROM ANY COMPUTER >HAS A CENTRAL BACKUP
GIVE A DISADVANTAGE OF NETWORKS OVER STANDALONE COMPUTERS >IF ONE SERVER IS DOWN ALL OTHER STATIONS ON THE NETWORK ARE AFFECTED
WHAT IS AN INTRANET A CLOSED PRIVATE NETWORK
WHAT IS AN EXTRANET > AN EXTERNAL ACCESS TO THE INTRANET
advantage of data logging accurate readings data collected automatically can be used in dangerous situations No human interaction required operates 24/7
disadvantage of data logging initial cost of equipment
One use of an expert system in medicine helps diagnose illness
2 advantages of using an experts system >can be kept up to date >more accuarate (diagnosis) >Doesn't forget like a (doctor)
disadvantages of using and expert system >lack of human touch >not 100% accurate >over reliance on the system
3 tasks carried out by robots and 3 advantages of using robots 3 tasks: spray painting, assembling parts and carrying heavy parts >robot doesn't get bored of doing repetitive jobs >saves on employment costs >work 24/7
disadvantage of using robots over humans >Loss of human jobs >high initial starting cost >maintenance costs
what is meant by an operating system? A software that runs a computer system
3 functions of an operating systems >enables software to run >maximises the use of memory >deals with errors
Name a type of banner Leaderboard
what is the golden triangle and why do websites ensure they are in it? The golden triangle is an area of a webpage a user focuses on when a search engines results are displayed. Websites want to be in it to ensure they get the most traffic as possible.
name a device that could be used to draw an image on a computer >joystick >mouse >graphics tablet >stylus pen >interactive whiteboard
what is meant by a bitmap graphic? an image made up of pixels
what is a bitmap image? Made up of pixels. It has a large file size. When enlarged they lose quality.
what is a vector image? Made up of objects, files size is small and when enlarged it doesn't lose quality
what is meant by optimising images and give an advantage optimising images is reducing the file size of the image an advantage is that it saves memory and storage space
storage devices >usb >SD card
what is a WAN Wide Area Network. it covers wide areas and is expensive to install and run
What is a LAN? Local Area Network. It is usually located in a single building. It is cheap to install and run
Advantages of a network over standalone computers >share hardware >share software >central back up
disadvantage of networks >network manager may need to be employed so it is expensive >if server is down all stations are affected >initial costs of services can be expensive
what is the internet A huge group of networks joined together. Each of these networks consists of lots of smaller networks
How do supermarkets use PoS systems? A barcode is scanned and the price of the product is displayed on the screen. This will deduct one from the stock level to compare the number in stock with the restock level. If the stock level goes below a certain number then there is an automatic reorder
Other than W.I.M.P name 3 other different features of a GUI >tutorials >customised desktop >colour >task bar >on screen keyboard
two exemptions from the Data protection act >Prevents a crime >Adoption records >capture of offenders >educational records or social work >examination marks >personal data relating to some ones physical or mental health
Name a suitable format for downloading music from the internet mp3
Give on advantage of the format and one disadvantage >files are compressed -Loss of quality
What is the purpose of validation? It checks data is sensible
Name two validation techniques Hash total- meaningless data Batch total-data with a purpose Presence check Range check Format check
1)Name one example of data collected for banking, 2)describe how the data is input 3)describe what information is out put from banking and 4)state the method used 1)ATMS:PIN 2)KEYPAD 3)BALANCE CHEQUE 4)Real time processing
1)Name one example of data collected in e-commerce 2)how the data is input 3) what is the output 4)what is the method used 1)Bank card detail 2)mouse, keyboard.. 3)A receipt is sent to customer through email 4)real-time transaction processing
1)Name one example of how data is collected in payroll 2)name the input 3)the output 4)state the process 1)Hours worked 2)Timesheets 3)payslip 4)Batch processing
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