Computer Test 3
Hackers
  • are people who are allergic to computers
Explanation:

The term "hacker" encompasses individuals with diverse skills and motives. While some engage in illegal activities like unauthorized access (black-hat hackers), others, such as ethical hackers (white-hat hackers), work legally to improve security by identifying vulnerabilities. This variety underscores the complexity and varied ethical standards within the hacker community.

Which VR device does not require a separate headset and uses a smartphone for VR experiences?
  • Oculus Rift
  • HTC Vive
  • Google Cardboard
  • PlayStation VR
Explanation:

Google Cardboard stands out among other VR devices listed because it utilizes a smartphone inserted into a simple cardboard viewer for VR experiences. Unlike Oculus Rift, HTC Vive, and PlayStation VR, which are standalone headsets with built-in displays, Google Cardboard relies on the smartphone's display and processing capabilities to deliver basic virtual reality at a lower cost and accessibility.

What is the term for the process of reducing the dimensionality of data while preserving its essential features?
  • Clustering
  • Dimensionality reduction
  • Classification
  • Regression
Explanation:
 

Dimensionality reduction involves techniques that aim to decrease the number of variables or features in a dataset while retaining its important characteristics. This process enhances computational efficiency, reduces storage requirements, and facilitates easier visualization and interpretation of complex data structures, supporting more effective analysis and understanding of data patterns and relationships.

What is a firewall rule in the context of computer security?
  • A program that enhances computer performance
  • A guideline that determines how traffic is allowed or blocked on a network
  • A type of malware
  • A hardware component of a computer
Explanation:

A firewall rule in computer security specifies conditions for allowing or blocking network traffic based on criteria like IP addresses, ports, and protocols. It's a fundamental part of firewall configuration, crucial for controlling access and protecting networks from unauthorized activities, ensuring secure and efficient traffic management.

What is System Software?
  • Word Processing
  • Program language
  • Windows
  • Browser
Explanation:
 

System software encompasses foundational programs that manage hardware resources and provide a platform for application software. This includes operating systems like Windows, device drivers facilitating hardware communication, and utility tools for system maintenance and optimization. It differs from application software, such as word processors or web browsers, which are designed for specific tasks and run on top of the operating system.

Which operating system is not Unix-based?
  • Windows
  • macOS
  • Linux
  • FreeBSD
Explanation:
 

Windows is fundamentally distinct from macOS, Linux, and FreeBSD because it is not Unix-based. While macOS, Linux, and FreeBSD derive from Unix or Unix-like systems, Windows is built on the Windows NT kernel, developed independently by Microsoft. This architectural difference affects system design, software compatibility, and administration practices across these operating systems.

What is "sidechain compression" used for in digital audio production?
  • Simulating stereo effects
  • Creating harmonies
  • Ducking or reducing the volume of one track in response to another track's audio
  • Adding echo effects
    • Explanation:

    Sidechain compression in digital audio production is pivotal for creating dynamic mixes where one track's audio level (main signal) is dynamically adjusted based on another track's audio (sidechain input). It's commonly used for effects like ducking background music during vocals or creating rhythmic pumping effects in EDM, enhancing clarity and impact in complex mixes.