IGCSE Computer Science Practice Test

These questions are part of the practice quiz. Start practicing

• What is the process called that converts plain text into cypher text?
• How do LCD displays work?
• What is a primary function of a web browser?
• How does a microphone convert sound into a signal?
• What technology do inkjet printers primarily use to apply ink?
• What is a feature of infrared heat touch screens?
• How does a digital camera primarily adjust its functionality?
• Which hexadecimal value corresponds to the decimal number 13?
• What advantage does the internal clock provide in parallel data transmission?
• What does a NOR logic gate output when both inputs are 0?
• What role does a thermostat play in a heating system?
• Which device converts reflected light into a digital file in a 2D scanner?
• How many bytes are in 1 megabyte?
• What signal does a computer interpret when a user presses a key on the keyboard?
• How does a 3D scanner gather data from an object?
• Which of the following describes the result of using an AND logic gate?
• What is the maximum speed of USB 2.0 connections?
• What is a disadvantage of infra-red optical touch screens?
• In what situation are barcodes typically found?
• What technology does a light sensor use to process its signals?
• What is one primary advantage of using digital cameras over film cameras?
• For what kind of output are inkjet printers particularly suitable?
• Why are toner cartridges considered cost-effective in laser printers?
• In what application is a moisture sensor most commonly used?
• What is a key difference between text-based and biometric passwords?
• Which of the following is NOT a recommended way to prevent accidental loss of data?
• What is a sign that spyware might be present on a computer?
• Which of the following describes a disadvantage of resistive touch screens?
• What is a significant drawback of traditional hard drives compared to SSDs?
• How does anti-virus software primarily function?
• What decimal number does the hexadecimal letter 'F' represent?
• Which of the following is a characteristic of 2D cutting operation principles?
• Which component is commonly used in a mouse to sense movement?
• In laser printing, what is the function of the fuser?
• What does the sensor in an inkjet printer detect?
• What method does anti-virus software use to detect new threats?
• How can setting data to read-only help protect it?
• What is a disadvantage of infra-red heat touch screens?
• Which technology allows for multi-touch interactions?
• How does 3D printing enhance healthcare?
• What does a temperature sensor primarily detect?
• What does primary storage refer to in a computer?
• What are binary numbers primarily used for?
• What does HTTP stand for?
• What are the implications of violating copyright laws?
• What type of sensor is utilized to measure humidity in the air?
• What is a significant disadvantage of using keyboards for data entry?
• What is a benefit of using 3D cutters over traditional methods?
• What process do laser printers primarily utilize to apply ink to paper?
• What advantage do inkjet printers have?
• How does an infra-red touch screen detect touch inputs?
• For what type of applications are resistive touch screens commonly used?
• What can help minimize the risks associated with pharming?
• What role does a backlight play in an LCD display?
• What prevents a streetlight from switching on and off rapidly due to varying light conditions?
• What is the primary function of a firewall?
• What is a common characteristic of infra-red heat touch screens compared to capacitive screens?
• What type of input can infra-red heat touch screens accommodate?
• Where are barcode readers commonly used?
• How does a resistive touch screen determine the location of a touch?
• What is a disadvantage of serial transmission?
• What is a consequence of data loss?
• What is a common outcome of a virus infection?
• What feature of interactive whiteboards allows users to save content for future use?
• Which of the following is a characteristic of volatile memory?
• What type of storage is characterized as non-volatile and cannot be accessed once removed?
• What is the function of a motion sensor in security devices?
• Which of the following is an advantage of infra-red optical touch screens?
• What is the purpose of a Denial of Service Attack?
• What distinguishes shareware from freeware?
• What advantage does a capacitive touch screen have over an infrared touch screen?
• Which screen technology relies on both glass and polycarbonate layers?
• What type of screen uses layers of glass to create electric fields?
• What is one advantage of barcode readers?
• What is a primary characteristic of data transmission?
• What is secondary storage in computing?
• What is a drawback of using a 3D cutter in terms of safety?
• How does an XOR logic gate produce a 1?
• What is plagiarism?
• What technology is USB flash memory based on?
• How does the movement on an interactive whiteboard get captured?
• What technology is associated with LED displays?
• Which internal data transmission method typically enhances speed based on channel width?
• Which benefit is associated with using LED technology?
• Which technology has replaced traditional cameras for recording films and taking photos?
• What is the primary function of cookies in web browsing?
• What is the main characteristic of half-duplex transmission?
• Which of the following is an advantage of LCD displays?
• Which statement is true regarding biometric passwords?
• What is the main purpose of digital cameras?
• What is the main purpose of a microphone in a computer?
• What advantage does a barcode reader bring to the checkout process?
• Which output would NOT be associated with a logic gate?
• What key feature distinguishes a 3D cutter from a 2D cutter?
• Which of the following statements is true regarding SSD advantages?
• What role does a photo diode play in optical technologies?
• What is a disadvantage of using laser printers?
• In terms of data entry speed, how do keyboards generally perform?
• What is a primary function of firewalls in computer security?
• Which type of transmission sends multiple bits simultaneously?
• What is another advantage of digital cameras compared to traditional film cameras?
• What is pharming designed to do?
• What is a disadvantage of interactive whiteboards?
• Which of the following describes a characteristic of laser printers?
• What technology allows secure transactions over the web?
• Which of the following applications is best suited for 3D printers?
• In data transmission, what does simplex mode allow?
• What is one of the key advantages of using a 2D cutter?
• What is the main benefit of SSDs running cooler than traditional drives?
• How does an infra-red optical touch screen determine the point of contact when touched?
• What is a primary advantage of using an interactive whiteboard in a classroom setting?
• What is shareware?
• Which of the following is a disadvantage of USB connections?
• How are colors defined in HTML?
• What is a disadvantage of a 2D scanner compared to a 1D scanner?
• What is the main application of a light sensor in street lighting?
• How do ISPs help reduce the risk of phishing?
• What is spyware primarily designed to do?
• What happens if there is more data than what the buffer can handle during printing?
• What role does static electricity play in a laser printer's operation?
• What essential function does a microprocessor serve in a digital camera?
• How does a 3D cutter achieve precise and clean cuts?
• Which of the following hexadecimal values represents the letter 'C'?
• What is a notable disadvantage of LCD displays?
• What limitation does a 2D cutter have regarding the types of objects it can work with?
• What is a disadvantage of using QR codes?
• In the context of voice recognition, what is a significant function of the software?
• What transmission method is used in the internal circuitry of computers with Integrated Circuits?
• What is the purpose of HTTPS?
• What does DAC stand for in the context of actuators?
• Which of the following is a recommended practice to reduce spyware risks?
• Which of the following allows for good screen durability in infra-red touch technology?
• What is a common disadvantage of 2D cutters?
• What is a common reason for using hexadecimal numbering?
• What is a key advantage of infra-red touch screens?
• How does a proxy server function in relation to internet browsing?
• What is a common application of a 2D scanner?
• Which of the following is a feature of QR codes?
• What is a primary disadvantage of inkjet printers?
• How does a QR code differ from a traditional barcode?
• What is the material used for infra-red optical touch screens?
• How does a capacitive touch screen detect touch?
• In a NAND logic gate, what condition results in an output of 0?
• What is a notable disadvantage of barcode readers?
• Which measure is least effective in preventing hacking?
• What is a common use for a 2D cutter?
• Which format do sound, music, pictures, video, text, and numbers use?
• What is the primary disadvantage of capacitive touch screens compared to resistive ones?
• What values are used to convert from denary to binary?
• What type of information do cookies store?
• How is the memory size of a computer typically measured?
• What does ROM stand for, and what is its primary function?
• What is the function of an actuator?
• Which of the following defines free software?
• What is unique about a MAC address?
• What is a key feature of speech recognition software?
• One advantage of using QR codes is that:
• What has contributed to the decreasing costs of 3D printing technology?
• Which advantage of SSDs contributes to their portability?
• What is a primary advantage of using a 2D scanner over a 1D scanner?
• What type of input can resistive touch screens accept?
• What materials can be used in 3D printing?
• What is the equivalent of 1 kilobyte?
• Which of these materials can be cut by a 3D cutter but not a 2D cutter?
• What is an expensive limitation concerning 3D cutters?
• What happens to the pixels in an LCD display when the liquid crystal turns solid?
• Which type of memory is volatile and stores data that is currently being used?
• What is a significant advantage of USB devices upon their initial connection?
• In terms of screen material, what do infra-red optical touch screens utilize?
• Which unit follows megabyte in increasing memory sizes?
• Why might keyboards be a less ideal choice for frequent data entry tasks?
• Which advantage of 3D printers allows for rapid transitions from design to prototype?
• What is a significant disadvantage of a 3D scanner?
• What is the main purpose of a 3D cutter application?
• Which application is suitable for a 2D cutter?
• Which of these statements about 2D cutters is true?
• Which of the following is an application of capacitive touch screens?
• What is the first step in the operation of a 2D scanner?
• What is a key application of QR codes?
• What main information can QR codes store for users?
• Which of the following statements is true about MAC addresses?
• What does phishing primarily aim to achieve?
• What is the primary benefit of using hexadecimal in computing?
• What determines the increase in memory size from kilobytes to megabytes?
• What is one application of interactive whiteboards?
• What do computer use regulations typically cover?
• What is an advantage of using serial transmission in networking?
• How does a browser manage user experience?
• Which of the following characterizes LCD displays?
• What does the acronym URL stand for?
• What is the hexadecimal value for the letter 'A'?
• What type of sensor is essential for maintaining proper humidity levels in a greenhouse?
• What material types can a 3D cutter work with that are not suitable for 3D printers?
• What characteristic defines a computer virus?
• What does the hexadecimal code #FF0000 represent in HTML?
• In normal data encryption, what is required to decode cipher text back to plain text?
• What is the output of an OR logic gate?
• Which component connects a keyboard to a computer?
• What does a pressure sensor measure?
• What is the unit symbol for kilobyte?
• What does MAC stand for in the context of networking addresses?
• Which of the following is NOT a common application for keyboards?
• What is freeware?
• Which statement describes a characteristic of digital cameras?
• What is a significant disadvantage of using 3D printers?
• What strategy can help against unsolicited software installations?
• What is needed for a user to scan a QR code?
• In serial data transmission, how is data sent?
• What is a key feature of resistive touch screens?
• What types of devices typically use LCD technology?
• Which logic gate has an output that is true (1) when both inputs are the same?
• Which statement is true about parallel transmission?
• Which mode allows for simultaneous data transmission between sender and receiver?
• Which logic gate produces an output of 0 unless both inputs are 1?
• What is an advantage of parallel transmission?
• Which of the following is a significant advantage of laser printers?
• According to manufacturers, how many bytes are generally considered to be in 1 kilobyte?
• What is a key application of laser printers?
• Which sensor is integral to the functioning of automatic street lights?
• What is a key step in the operation of an inkjet printer?
• Which sensor measures the strength and direction of a magnetic field?
• What is a significant advantage of capacitive touch screens in terms of user experience?
• What is the primary function of a mouse in a computer system?
• How does optical technology store data for reading?
• Which of the following is the most effective way to minimize the risk of viruses?
• What are the primary colors used in an LCD display?
• What does the unique MAC address identify?
• What is a downside to using parallel transmission?
• What must a printer driver do before sending data to an inkjet printer?
• One of the applications of an inkjet printer is to:
• What process follows after data is sent to the printer driver in an inkjet printer?
• What is a disadvantage of capacitive touch screens?
• Why are ethics important in computer use?
• How does a microprocessor utilize input from a light sensor?
• What is the most common method for data entry into a computer?
• What does copyright protect?
• What technology is primarily used in the imaging process of a 2D scanner?