A part of a computer system or network which is designed to block unauthorized access while permitting outward communication.
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What is the definition of an interface?
A device or program enabling a user to communicate with a computer.
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What are some examples of operating systems?
IOS, Unix, Android, Windows, Linux, Mac OS.
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What is an operating system?
A software program that allows the computer software to communicate with the computer hardware.
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What does the operating system do?
Transfers data between memory locations and the CPU, produces a visual display for the monitor, provides an environment where applications can run.
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What is a (GUI) Graphical User Interface?
An operating system that contains graphics and icons, they are easier to use than command-line interfaces and are user friendly.
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What are the parts of a graphical user interface?
Pointer, Desktop, Icons, Menus and Windows.
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What is a (CLI) Command-Line Interface?
They are an operating system that requires commands to be typed on the keyboard. They are complicated to use and less user friendly.
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What is multitasking?
Early computers could only work on one task at a time, however, nowadays many applications can be run at once, this is called multitasking.
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What is multi-user?
Modern operating systems allow many people to use the same computer without having to re-boot the system.
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What is the difference between a CLI and GUI?
Command-Line Interfaces are not as user friendly as Graphical User Interfaces and are more complicated to use.
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How does the Operating System keep the computer secure?
The operating system must not only allow different processes and user to use the system but it must prevent them from clashing or the wrong user gaining access to another user’s private files.
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How can a virus affect your computer?
A virus can only affect your computer if you open an attachment.
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What are Utilities Programs?
Utilities programs are small programs which perform a limited function to help the computer system run smoothly and securely and are specifically designed to help the end-user manage and tune the computer hardware and software.
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Some examples of Utility programs are...
Backup, Character Map, Disk Clean-up, Security Center etc.
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What are the three main categories for Utility programs?
Computer Security, Disk Organisation and System Maintenance.
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Computer security examples...
includes antivirus, spyware protection and firewalls.
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Disk Organisation examples...
includes formatting, file transfer and defragmentation.
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System maintenance examples...
includes system information and diagnosis, system clean up tools and automatic updating.
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Examples of computer security...
Antivirus and Spyware Protection.
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A bit about firewalls...
Firewalls restrict the incoming and outgoing access to a network by analysing the data and determining whether it should be allowed through or not, based on a predetermined set of rules.
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What are the two types of disk organisation?
Disk Formatting and File Transfer.
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What is Disk Formatting?
Disk Formatting is used to prepare a storage device so that it is ready to be used for the first time.
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What is File Transfer?
File Transfer software assists in moving files from one computer system to another. It will make sure that the correct number of data packets are sent at the expected time and that the data is in a suitable format to be transferred.
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What is system information and diagnostics?
System information and diagnostics automatically check for errors on the computer system. They will look for bad sectors on a disk and files which have been fragmented and either automatically correct the file or notify the user of what needs to be
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List types of applications...
Word processors, Desk Top Publishers, Databases, Spreadsheets, Email and internet Browser.
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Name the four types of software...
Off-The-Shelf, Custom, Proprietary and Open-Source.
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What are the differences between off-the-shelf and custom made software?
Off-The-Shelf software is cheaper as it is made in bulk, whereas custom made software costs more as it is made specifically to suit a companies needs.
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Other cards in this set
Card 2
Front
What is the definition of an interface?
Back
A device or program enabling a user to communicate with a computer.
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