System Software
System software is...?
What is software that allows the user to interact with the computer?
The software that is designed to perform a specific task.
What is application software?
Software that is responsible for maintaining and optimising the performance of a computer.
What is Utility Software?
The process of Defragmentation is...
Re-arranging files and/or parts of a file by grouping them together.
This allows the hard drive to be able to access the data much faster if all parts of the file are next to each other
Using an algorithm to scramble data
What is Encryption?
Open source vs Proprietary Software
•Proprietary software is a commercial form of software where manufacturers hide the source code so it cannot be imitated.
•Open source software is a free form of software which allows users to access the source code so that modify it to suit their own needs.
The communication software that could include video conferencing software and email software.
What is Teams, Zoom?
What is Outlook, Gmail?
Identify 3 reasons why Utility Software is important to be installed on our computer system.
What is...
•To keep data secure
•To prevent users from having infected files and/or computer system.
•To prevent data loss by creating duplicate copies.
•To improve the performance of the hard drive and it’s ability to manage files.
•To monitor what data is being received by a computer system.
Defragmentation is needed because...
The longer you use a computer, the more files you add, delete, move and re-name get moved around.
Caesar cipher is...
Caesar cipher is an early example of encryption that uses a substitution cipher to replace letters with other letters a fixed number of positions down the alphabet.
Six tools of an operating system.
What is User interface, User management, File management, Device drivers, Memory Management and Multitasking?
Software that is written to achieve a specific task for an individual or a company.
What is specialist software?
Name 4 Utility Software.
What is Anti-virus, Back-up, Compression, Encryption and Firewall?
Can solid state be defragmented?
No because it can do more harm than good and this is because solid state drives have a limited number of read/write cycles.
Give 2 reasons why an unauthorised person cannot understand encrypted data.
1. Encrypted data is encoded/scrambled so that it cannot be understood
2. The unauthorized person would not have the key to decrypt the data.
Explain user interface and give 3 examples
What is GUI, Command Line Interface and WIMP?
Software examples of specialist software.
What is CAM, Project Management Software, CAD?
Describe the use of a firewall on a computer system.
Monitors incoming and outgoing computer network traffic.
DC Café is located close to one of the busiest train lines in Birmingham. As a result, they get a lot of passing trade and business is booming. They use a computer-based ordering system which is running slowly. A technician has said that the hard disk is fragmented.
1. Orders are saved onto the system so they can be processed.
2. Once the customer has received their order, this will be deleted from the system.
3. Once more orders are made, it creates a new file.
Why do we need encryption?
It’s primary purpose is to make data more secure and avoid it unauthorised access.
The software that will allow the device to communicate with the CPU. Refers to a 'plug and play'.
What is Device drivers?
Name 5 software that are apart of the Microsoft Office Suite integrated software package.
What is Excel, Word, Powerpoint, Access, Publisher?
Explain how compression is used
Uses an algorithm to reduce the size of file in order save on storage space.
Explain why the operating system will help Max improve his productivity.
1. Allows users to have more than one window open.
2. Provides a graphical user interface (windows, icons, menus, cursors)
3. Provides user with errors/help messages.
Encrypt the following messages.
ABCDEFGHIJKLMNOPQRSTUVWXYZ
DEFGHIJKLMNOPQRSTUVWXYZABC
Alphabet shifted by 3 spaces
Encrypt: KHOOR and HQFUBSWLRQ
What is HELLO and ENCRYPTION?