IGCSE Theory Paper 1 2023 Questions

What is the purpose of using a footer in a document?

• To display the document title at the start of the document

• To provide additional information at the top of the page

• To show the page number and author's name on the cover page

• To repeat information at the bottom of each page

Answer explanation

To add information at the bottom of every page - such as page numbers or dates

What is the most appropriate display format in a spreadsheet for C?

• Date format

• General format

• Currency format

• Percentage format

Answer explanation

The most appropriate display format for the 'Sell by' date of the Choco Bars box in a spreadsheet is the Date format, as it accurately represents dates and allows for easy sorting and filtering based on date values.

What is the most appropriate display format in a spreadsheet for B?

(a)  

Answer explanation

The most appropriate display B of the Choco Bars box in a spreadsheet is the Numeric / integer format, as it accurately represents numeric data and allows for easy sorting and filtering based on numeric values.

How are user ID and password used to increase the security of data?

• User ID is used for decryption and password for encryption

• User ID is used for authorisation and password for authentication

• User ID is used for validation and password for authorisation

• User ID is used for encryption and password for tracking

Answer explanation

User ID is used for authorization and password for authentication, ensuring that the right user has access to the data and verifying their identity.

What is meant by biometric methods in security systems?

• Using physical characteristics for authentication

• Using barcodes for identification

• Using biological organisms for data storage

• Using binary code for encryption

Answer explanation

Using physical characteristics for authentication is what is meant by biometric methods in security systems.

Select the advantages of using a smart security system in a house?

• Convenience of remote control/ viewing video

• May need a paid subscription to view video

• Higher energy consumption

• Increased vulnerability to cyber attacks

• Immediate alerts if there is a security breach

Which sensors could be used with a smart security system?

• Temperature sensor and motion sensor

• Light sensor and sound sensor

• Pressure sensor and proximity sensor

• Camera sensor and fingerprint sensor

Answer explanation

Light sensor and sound sensor are commonly used with smart security systems to detect changes in light levels and sound disturbances, respectively.

What is extended reality?

• Irrelevant or unsolicited messages sent over the internet

• A type of digital currency which can be used in transactions

• Virtual reality and Augmented reality combined

• Enables users to create web pages and host online

A student has placed images in a document.

Name a file formats they could have used for the images.

(a)  

What is a QR Code?

• A check that the characters entered conform to a pre-defined pattern

• A form of digital certificate which is used to authenticate a website

• A square barcode that can be read using smartphones

• A device that enables data packets to be moved between different networks