question What is the purpose of the Ctrl Z keyboard shortcut

What is the purpose of a UPS (Uninterruptible Power Supply) in computing?

A. Increase internet speed
B. Prevent data loss during power outages
C. Manage system resources
D. Connect to the internet

What is the primary function of the control unit in a CPU?

A. Execute instructions
B. Manage memory
C. Control and coordinate the operations of the CPU
D. Connect to the internet

In a computer, what is the purpose of the motherboard?

A. Provide electrical power
B. Manage system settings
C. Connect to the internet
D. Serve as the main circuit board

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 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

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

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

A. Save the document
B. Select all
C. Cut the selected text
D. Paste the copied text

What does HTTP stand for in web technology?

A. HyperText Transfer Protocol
B. High-Tech Text Protocol
C. Hosted Transfer Transmission Protocol
D. HyperTransfer Text Protocol

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

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

A. Open a new document
B. Find text within the document
C. Save the document
D. Copy the selected text