Presentation on theme: "WHAT Exam Practice WHY All MUST Most SHOULD Some COULD Be able to understand the requirements of the exam to achieve a grade D Be able to understand the."— Presentation transcript:
WHAT Exam Practice WHY All MUST Most SHOULD Some COULD Be able to understand the requirements of the exam to achieve a grade D Be able to understand the requirements of the exam to achieve a grade B or above Be able to understand the requirements of the exam to achieve a grade C
WHAT Exam Practice HOW All MUST Most SHOULD Some COULD Be able to answer the exam questions in AMBER Be able to answer the exam questions in GREEN Be able to answer the exam questions in RED Differentiation: Students work in differentiated groups, activities are allocated accordingly, task explanation, key words/info around room,, group/pair work, prior knowledge, resources.
WHAT Topic: The Digital Divide CONNECT Self Assess – How much do you know about answering exam questions? How CONFIDENT are you? 1 2 3 4 5
ACTIVATE TOP Pick 3 key points FOR and AGAINST INTERNET WHAT Exam Practice
WHAT DEMONSTRATE Exam Practice 1.What is data logging? [2 marks] Answer: The collection and storage of data from sensors, and its storage and processing by a computer.
WHAT DEMONSTRATE Exam Practice 2. Computer systems can be protected using physical security and software security. Explain, with reference to examples, what each type of security is. [4 marks] Answer: Physical security concerns things that prevent physical access to a building, room or computer, or prevent physical damage to a computer such as by fire or flood. For example this includes locking a room to prevent theft of computer hardware and installing smoke detectors to prevent damage by fire. Software security is designed to make sure that only authorised people can access a computer system. For example, this includes making use of User-IDs and passwords, allowing access to certain files and areas - just as is used in school networks.
WHAT DEMONSTRATE Exam Practice 3. What is the difference between data and information? [4 marks] Answer: Data is the raw facts and figures in a form before processing by the computer - a human being would find it difficult or impossible to understand data. Information is produced after processing - a human being is able to read and understand information.
WHAT DEMONSTRATE Exam Practice 4. Describe three advantages of a small office using a LAN rather than three stand-alone machines. [4 marks] Answer: LAN stands for Local Area Network If all users are on a network together it is easy to share files and resources. This means a printer can be shared - all users could print to it. In addition, software can be shared, and more than one individual can use data at the same time. A LAN thus allows efficient use of the office resources - for example all work could be stored on a server allowing easier access, security and safer, more centralised backup.
WHAT DEMONSTRATE Exam Practice 5. What is the difference between data verification and data validation? [4 marks] Answer: Verification is checking the accuracy of data entry - either manually or automatically Validation is a check performed by a computer program to make sure the data is allowable
WHAT DEMONSTRATE Exam Practice 6. Jo is interested in family history - how can this help her understand the grandfather-father-son backup principle? [4 marks] Answer: The grandfather-father-son principle is used to make backups more useful and secure. Three generations of files are kept i.e. the last three versions - the newest version being the 'son'. As new versions are created the process rolls on, so the son becomes the father, the father becomes the grandfather.
WHAT DEMONSTRATE Exam Practice 7. What offences does the Computer Misuse Act, 1990 deal with? [3 marks] Answer: Hacking - unauthorised access to any program or data held on a computer - maximum fine of £2000 or six-months in prison. Computer fraud and blackmail - unlimited fine and a maximum five-year prison sentence. Viruses - unauthorised modification of a the contents of a computer, damaging the operation of a program or affecting the reliability of data. Penalty is an unlimited fine and maximum of five-year prison sentence.
WHAT Topic: The Digital Divide CONSOLIDATE Self Assess – How much do you know about answering exam questions? How CONFIDENT are you now? 1 2 3 4 5
WHAT DEMONSTRATE Exam Practice 8. By giving a suitable example for each, explain what is meant by: a. Field, b. Record, c. File [6 marks] Answer: A file is the name for a collection of related database records - such as the all the details for students at a school. A record is the name for related information about one thing or individual - such as the details of one individual student at a school. A field is one item of data on a record - such as the postcode of the individual student at a school. A file contains a collection of records, and a record contains a collection of fields.
WHAT DEMONSTRATE Exam Practice 9. What is meant by a 'check digit' - explain two real life examples where check digits are used. [4 marks] Answer: A check digit is a number placed at the end of a string of numbers to check that they have all been correctly input into the computer. Check digits are used with bank account numbers, ISBN numbers (used on books) - anywhere where potentially troublesome long numbers may be entered.
WHAT DEMONSTRATE Exam Practice 10. Harry is concerned that e-mail has something to do with sending inappropriate substances through the post. Why is he mistaken? [4 marks] Answer: E-mail stands for electronic mail - the most traditional way of sending messages on the internet. Using e-mail software (such as Outlook or Eudora) or an online interface (such as Hotmail and Gmail) the user types their message and presses send. The e-mail is then sent over the internet to the recipient's inbox - unique to their e-mail address. When they next log-on to their e-mail they receive the message.
WHAT DEMONSTRATE Exam Practice 11. All computer systems make use of an operating system. Explain three tasks that an operating system performs [6 marks] Answer: An operating system does many things - the main purpose is to allow applications software to interact with computer software. You then need to mention three of the following: Allow applications to print, save or open files. Organises where data is saved on disk drives. Provides security features such as handling passwords. Manages data travelling to and from peripherals such as a scanner or a mouse.
WHAT DEMONSTRATE Exam Practice 12. Name both an advantage and a disadvantage of coding data in a database field [2 marks] Answer: Advantage: File size - using coding will reduce the overall size of the database making it efficient to search and update. A disadvantage is that the coding may become confusing and be difficult to update and understand.
WOW, HOW, NOW yourself: How many questions did you answer and at what level? What questions have you not done or found hard? What will you do now to prepare you for these questions in the exam? WHAT CONSOLIDATE Exam Practice
WHAT DEMONSTRATE Exam Practice Extension Activity – Self Assess Now practice further by clicking on the link and setting your level to answer more exam questions which are interactive questions and marked straight away: http://www.reviseict.co.uk/revision/exampractice.shtml Select level and start test!
Your own knowledge WHAT CONSOLIDATE What you know/understand? What do you need to read up on/revise more of? Exam Practice
WHAT DEMONSTRATE Exam Practice Open PowerPoint: G:\ICT\year 9\Year 9 ICT GCSE\AQU\ ExamPractice Use the exam questions and the resources around you to: Research the answers Answer them WOW your work NOW – plan for revision – what will you do to support your learning? All MUST Research and Complete at least half of the exam questions
WHAT CONSOLIDATE What you know/understand? What do you need to read up on/revise more of? Exam Practice