30 Questions
What is the primary purpose of the check digit method?
To validate user input and ensure it is correct
What type of book numbering system uses the check digit method for validation?
ISBN (International Standard Book Number)
What is a limitation of transferring files using physical media?
The recipient's computer may not have the corresponding reading device
What is the simplest type of computer network?
Two computers connected with a telephone line
What was the primary mode of operation for computers in the mid-20th century?
Standalone operation
What is the principle that states that inaccurate input data will result in inaccurate output information?
Garbage In Garbage Out (GIGO)
What is a benefit of connecting computers together?
Improved file transfer convenience
What is the primary purpose of data verification in the input stage?
To check whether the input data matches with the source document
What is an example of a transposition error?
Typing '25' instead of '52'
What is the benefit of double data entry?
It ensures that the input data is accurate
Why is it important to prevent errors during the input stage?
To improve the accuracy of output information
What is the purpose of inputting data twice during data verification?
To allow the computer system to check for discrepancies
What type of network spans a wide geographical area, covering cities or countries?
Wide Area Network (WAN)
In a peer-to-peer network, what is the primary role of each computer?
To directly communicate with every other computer
What is the primary advantage of a client/server network over a peer-to-peer network?
Better security and centralized management
What describes the physical or logical arrangement of devices in a network?
Network topology
Which type of network is often used in businesses and large-scale organizations?
Client/server network
What is the main characteristic of a local area network (LAN)?
Covers a small geographical area
What is the primary goal of hacking activities?
To provide unauthorized access to data held on a computer system
What is a common type of hacking activity?
Breaking into computer networks
What is the purpose of using anti-virus software?
To prevent computer viruses
What is a benefit of using a firewall?
To prevent unauthorized access to data
What is a consequence of hacking activities?
Stealing valuable information
What is a strategy to avoid being hacked?
Using anti-virus software and regularly downloading and installing updates
What is the primary function of an Email Client program?
To download emails from email server of email service provider
Which type of cable has a maximum cabling length of 100 metres?
Twisted pair cable
What is the primary purpose of a Web Browser?
To let the user browse web pages through HTTP
What is the primary function of FTP program?
To transfer files between computers through Internet
What is the transfer rate of Coaxial cable?
Sufficient frequency range to support multiple channels
What is the limitation of using a Twisted pair cable?
It is limited to a maximum cabling length of 100 metres
Test your understanding of the check digit method, a mathematical technique used to validate user input, including its application in ISBN and HKID numbers.
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