WGU INTRODUCTION-TO-IT TEST SAMPLE QUESTIONS & RELIABLE INTRODUCTION-TO-IT EXAM COST

WGU Introduction-to-IT Test Sample Questions & Reliable Introduction-to-IT Exam Cost

WGU Introduction-to-IT Test Sample Questions & Reliable Introduction-to-IT Exam Cost

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WGU Introduction to IT Sample Questions (Q35-Q40):

NEW QUESTION # 35
What is true about an operating system?

  • A. It is a firmware burned onto the computer mother board.
  • B. It is a software program that directly supports the computer itself.
  • C. It is a hardware component of the computer system.
  • D. It is an application program similar to word processors.

Answer: B

Explanation:
An operating system (OS) is a crucial component of the computer system. It is not firmware, which would be embedded into the hardware (eliminating option A), nor is it an application program like a word processor (eliminating option B). It is also not a hardware component (eliminating option D). Instead, an operating system is system software that manages computer hardware and software resources and provides common services for computer programs. This includes managing processes, memory, files, security, and input/output operations. The OS acts as an intermediary between applications and the computer hardware, making it possible for other software to run on the computer.
References:
*Operating system definition from OxfordDictionaries1.
*Wikipedia article on Operating Systems2.
*Guru99's explanation of what an Operating System is3.
*How-To Geek's description of an Operating System4.


NEW QUESTION # 36
Which aspect of the CIA Triad requires that data are correct?

  • A. Confidentiality
  • B. Stability
  • C. Integrity
  • D. Availability

Answer: C

Explanation:
1.Integrity: This principle focuses on maintaining the accuracy and trustworthiness of data. It ensures that data remains unaltered and free from corruption. Key points related to integrity:
oData Accuracy: Integrity ensures that data reflects the true state of information. Any unauthorized changes or alterations are detected and prevented.
oHash Functions: Hash functions are commonly used to verify data integrity. These functions generate a fixed-size hash value (checksum) based on the original data. If any part of the data changes, the hash value will also change, indicating potential tampering.
oDigital Signatures: Digital signatures provide a way to verify the integrity of electronic documents. They use asymmetric encryption to sign data, ensuring that it has not been altered since the signature was applied.
oData Validation: Implementing input validation and proper access controls helps maintain data integrity by preventing unauthorized modifications.
2.Confidentiality and Availability:
oConfidentiality: This principle ensures that only authorized users can access sensitive data. It focuses on keeping information private and restricting access.
oAvailability: Availability ensures that authorized users can access data when needed. It prevents data from being unavailable due to system failures, attacks, or other disruptions.
3.Balancing the Triad:
oWhile all three principles are essential, they can sometimes conflict with each other. For example:
Enhancing confidentiality (e.g., strong encryption) may impact availability (e.g., longer decryption times).
Rigorous integrity checks can affect system performance.
oOrganizations must strike a balance based on their specific security requirements.
References
*CSO Online: The CIA triad: Definition, components, and examples
*Comparitech: What is the CIA triad - confidentiality, integrity, and availability?
*Preventive Approach: CIA Triad: A Comprehensive Guide for Beginners


NEW QUESTION # 37
Which two actions are included in the role of a Domain Name System (DNS)?
Choose 2 answers

  • A. Translates human-friendly aliases into IP addresses
  • B. Stores IP addresses and aliases in a table on the server
  • C. Transfers files between TCP/IP servers on the web
  • D. Enables telnet communication between clients and servers

Answer: A,B

Explanation:
1.Translates human-friendly aliases into IP addresses: DNS serves as the "phone book" of the internet, converting user-friendly domain names (like www.example.com) into numerical IP addresses (such as
192.0.2.1) that computers and network devices use to locate one another on the internet12.
2.Stores IP addresses and aliases in a table on the server: DNS servers maintain records that map domain names to corresponding IP addresses. These records are stored in distributed databases across various DNS servers, ensuring efficient and reliable resolution of domain names1.
References
1.GeeksforGeeks: What is Domain Name System (DNS)?
2.Cloudflare: What is DNS? How DNS works


NEW QUESTION # 38
Which peripheral replaces the mouse on a mobile device?

  • A. Jack
  • B. USB
  • C. Camera
  • D. Stylus

Answer: D

Explanation:
*The peripheral that replaces the mouse on a mobile device is the Stylus.
*Explanation: A stylus is an input device that allows users to interact with touchscreens by tapping, drawing, or writing. It serves as an alternative to using a traditional mouse for precise input on mobile devices.
* Therefore, the correct answer is A. Stylus


NEW QUESTION # 39
What are three operating systems that are commonly used today?
Choose 3 answers

  • A. Microsoft Outlook
  • B. Linux
  • C. Microsoft Windows
  • D. MySQL
  • E. Mac OS
  • F. Mozilla Firefox

Answer: B,C,E

Explanation:
1.Microsoft Windows: Developed and marketed by Microsoft, Windows is the most widely used desktop operating system globally. It accounts for nearly 72% market share for desktop and laptop computers.
Windows provides an intuitive and user-friendly graphical desktop, making it easy to use and navigate. It is versatile and supports various tasks such as word processing, browsing, gaming, software development, video editing, and more1.
2.Linux: Linux is a popular open-source operating system. It was developed by programmer Linus Torvalds in
1991. Linux runs in many organizations, private offices, mobiledevices, supercomputers, and over the internet.
It already contains almost all the features of the UNIX OS and has additional features. Various distributions of Linux exist, including Ubuntu, Debian, Solus, and Linux Mint. Linux is known for its security, compatibility, and flexibility2.
3.Android: Android is one of the most common operating systems today. It powers smartphones, tablets, and other smart devices. Developed by Google, Android is based on the Linux kernel. It dominates the mobile market and offers a wide range of applications and features for users2.
Comprehensive Detailed Step by Step Explanation:
1.Microsoft Windows:
oWindows is developed and maintained by Microsoft.
oIt provides a graphical user interface (GUI) and is user-friendly.
oWindows 10 is the current version, with earlier versions like Windows XP, Windows 8, and Windows 7.
oAdvantages: Compatibility with hardware, pre-loaded software, ease of use. Disadvantages: Cost, security threats, vulnerability to viruses.
2.Linux:
oDeveloped by Linus Torvalds in 1991.
oOpen-source and free of cost.
oUsed in various environments (organizations, supercomputers, etc.).
oDistributions like Ubuntu, Debian, and Linux Mint.
oAdvantages: Security, compatibility, flexibility. Disadvantages: Multiple versions, not ideal for gamers.
3.Android:
oDeveloped by Google.
oBased on the Linux kernel.
oDominates the mobile market.
oOffers a wide range of apps and features.
References:
1.Toppr: Commonly Used Operating System
2.Tecmint: Most Used Operating Systems in the World1


NEW QUESTION # 40
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