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WJEC - CG1 - 1.7
Characteristics of Computer Applications
| Question | Answer |
|---|---|
| What kind of computer systems are used today | - Monthly payroll - billing systems - aeroplane control systems - process control systems - computer based learning - computer assisted design (CAD) |
| Why use a payroll system rather then assign that task to a person | - The job can be done instantly by a computer, will be accurate and consistent - The computer doesn't take breaks and doesn't need pay - |
| Why would an automated aeroplane control system be better then a human | - The computer system does not need to sleep and can make complex calculations instantly ensuring that paths, schedules and other important control systems are always working and accurate |
| Why would a billing system be better for online markets (ebay etc) | - The transactions can be done instantly producing reporting instantly and giving customers confirmation quickly. |
| What is a transaction file in this context | - a non permanent store of data, such as a daily sales sheet |
| What is a master file in this context | - a permanent store of data, such as a sales sheet consisting of all the sales data since the start of the record |
| What is a V.L.E. (computer aided learning) | - Virtual Learning Environment (fronter) |
| Why would a batch system be useful | - if your company had a task that need to be repeated constantly such as working out VAT on sales, or printing out fliers, monthly mailing lists etc this could be done by a computer system |
| What is a process control system | - A computer system that is designed to carry out a function depending on whats input into it - A control system may keep the temperature constant in a green house |
| What are the three types of network, (not lan, wan, wifi etc) | - Internet - Extranet - Internet |
| What is an intranet | - A network built within a local area network, webpages are saved and stored internally and is usual used by a company, to communicate internally, send files and data, received company wide information and notifications |
| What is an extranet | - basically an intranet but, the company allow a non employee member to access it, only data permitted by the internal system staff is visible and an the rest is blocked to the external user. |
| What is the internet | A huge collection of networks all joined together |
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delldom
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