Key Computer Terms and Concepts Quiz

Questions and Answers

What is the primary use of a Barcode Number?

To transfer data between devices

To encode multimedia files

To track inventory and verify products (correct)

To provide location data

Which statement accurately describes a URL?

It is a protocol used for text messaging.

It is a type of barcode used for inventory tracking.

It specifies the location of a web resource and retrieval method. (correct)

It is a system for encoding video images.

What function does a Barcode Reader perform?

It reads and decodes printed barcodes (correct)

It encodes audio files

It authenticates user identity

It transfers data between different types of devices

Which of these technologies is essential for location tracking in mobile devices?

Global Positioning System (GPS) Signup and view all the answers

What does the Short Message Service (SMS) primarily facilitate?

Exchange of short text messages Signup and view all the answers

What is the primary function of the Long Term Evolution (LTE) standard?

To enhance wireless broadband communication Signup and view all the answers

How does the Light Emitting Diode (LED) work?

By emitting light when electric current passes through a semiconductor Signup and view all the answers

What is the role of Hypertext Transfer Protocol (HTTP) in communication?

To enable data communication over the World Wide Web. Signup and view all the answers

Which of the following best describes the Portable Document Format (PDF)?

A file format for text or graphics that resembles a printed document. Signup and view all the answers

What is the primary function of a USB Flash Drive?

To store data and facilitate file transfer. Signup and view all the answers

What does a Closed Circuit Television (CCTV) system primarily do?

It transmits a signal to a specific place on a limited set of monitors. Signup and view all the answers

Which technology is used for distinguishing humans from automated systems?

CAPTCHA Signup and view all the answers

What is the primary purpose of a Wireless Local Area Network (WLAN)?

To facilitate wireless connectivity among devices in a coverage area. Signup and view all the answers

Which of the following is a common application of Anti-Theft Detectors?

In retail stores to protect merchandise. Signup and view all the answers

What is the main function of a Uninterruptable Power Supply (UPS)?

To allow computers to remain operational during power interruptions. Signup and view all the answers

What technology uses radio waves to identify objects passively?

Radio Frequency Identification (RFID) Signup and view all the answers

Study Notes

Key Computer Terms and Concepts

Barcode Number: Essential for tracking inventory, pricing, shipping, and verifying product authenticity.
Uniform Resource Locator (URL): Commonly known as a web address; indicates the location of a resource on a computer network and the means to retrieve it.
Universal Serial Bus (USB): A standard interface that facilitates communication between devices (like PCs and smartphones).
Barcode Reader: An optical scanner that reads printed barcodes, decoding the data for processing by a computer.
MPEG (Motion Picture Experts Group): An international standard focused on the encoding and compression of video images.
Global Positioning System (GPS): A navigation satellite system that provides real-time location, velocity, and time, widely utilized in vehicles, smartphones, and watches for navigation.
Hypertext Transfer Protocol (HTTP): A foundational application protocol for communication over the World Wide Web, facilitating distributed and collaborative hypermedia information sharing.
Short Message Service (SMS): A standardized communication protocol allowing mobile devices to send and receive short text messages.
Quick Response (QR): An advanced type of barcode that holds information readable by digital devices, like smartphones.
Long Term Evolution (LTE): A mobile communication standard enhancing capacity and speed through advanced radio interfaces and core network improvements for data transmission.
Light Emitting Diode (LED): A semiconductor device emitting light when electrical current passes through; light generation occurs when electrons and holes combine in a semiconductor.
Portable Document Format (PDF): A versatile file format that retains the appearance of a printed document, suitable for viewing, printing, and electronic transmission.
USB Flash Drive: Compact storage device equipped with flash memory for data transfer and storage between computers.
Closed Circuit Television (CCTV): A video surveillance system that transmits a signal to a specific location, limited to a defined set of monitors for security purposes.
CAPTCHA: A computer-based test to determine if the user is human by responding to challenges that automated programs cannot solve easily.
Wireless Local Area Network (WLAN): A wireless communication method for multiple devices within a defined area, often inclusive of internet access points for mobility.
Anti-Theft Detector: Security devices, such as RFID and GPS, used primarily in retail settings to protect items from theft.
Radio Frequency Identification (RFID): A passive technology using radio waves for identifying and tracking objects through tags.
Liquid Crystal Display (LCD): A flat panel display that modulates light using liquid crystals to create images.
Uninterruptable Power Supply (UPS): A backup power system that allows computers to continue functioning briefly during power interruptions.
Wireless Fidelity (Wi-Fi): Technology enabling devices to wirelessly connect to the Internet or communicate with each other within a specific area.
Headset: A communication or media device connected to computers for audio input and output.
Proximity Card Door Lock Systems: Security systems utilizing radio waves to read and authenticate information from specialized cards or fobs.
Biometrics: Identification verification method utilizing unique biological traits, such as fingerprints, to confirm user identity, particularly for clocking in and out of work.

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Description

Test your knowledge on essential computer terms and concepts. This quiz covers essential keywords like barcode numbers, URLs, USBs, and more, providing a broad understanding of their application in technology. Perfect for students and tech enthusiasts alike.