question What is the purpose of the CTRL X keyboard shortcut

What is the function of a barcode scanner in a retail environment?

A. Process credit card transactions
B. Display product information
C. Capture and decode barcode data
D. Manage inventory databases

Which programming paradigm emphasizes treating computation as the evaluation of mathematical functions and avoids changing-state and mutable data?

A. Procedural programming
B. Object-oriented programming
C. Functional programming
D. Declarative programming

What is the primary function of an Ethernet cable in a network setup?

A. Connect to Wi-Fi
B. Transmit electrical power
C. Transmit data between devices
D. Display network information

What is the purpose of a compiler in the context of programming languages?

A. Convert high-level code to machine code
B. Debug code
C. Run applications
D. Connect to the internet

What is the purpose of a surge protector in computing?

A. Enhance graphics performance
B. Prevent data loss during power surges
C. Manage network connections
D. Provide wireless connectivity

Which type of software provides a user interface for interacting with the computer?

A. System software
B. Application software
C. Firmware
D. Middleware

In networking, what does the acronym LAN stand for?

A. Local Area Network
B. Longitudinal Access Node
C. Linked Area Network
D. Logical Application Node

What is the purpose of the CTRL + J keyboard shortcut?

A. Justify the selected text
B. Join multiple cells in a spreadsheet
C. Open a new document
D. Cut the selected text

What is the purpose of the CTRL + U keyboard shortcut?

A. Underline the selected text
B. Undo the last action
C. Save the document
D. Cut the selected text

What is the role of a database index in database management?

A. Store large binary files
B. Speed up data retrieval by providing a quick lookup
C. Encrypt sensitive data
D. Manage user access control