Pass the WGU Courses and Certificates Introduction-to-IT Questions and answers with CertsForce

•Unauthorized access refers to gaining entry or access to a system, physical or electronic, without the permission of the owner or administrator.

•Security is the type of system requirement that involves preventing unauthorized access to data.

•Security measures include:

oAuthentication: Verifying user identity.

oEncryption: Protecting data from unauthorized viewing.

oAccess controls: Limiting who can access specific resources.

oFirewalls: Filtering network traffic.

•Ensuring security helps safeguard sensitive information and maintain data integrity.

References:

1.Unauthorized Access: Risks, Examples, and 6 Defensive Measures

2.How to Prevent Unauthorized Access: 10 Best Practices

3.Threat Picture: Unauthorized Access Prevention

4.PMC: Protecting Information with Cybersecurity

5.Cyberpedia: Unauthorized Data Access

1: Unauthorized Access: Risks, Examples, and 6 Defensive Measures 2: How to Prevent Unauthorized Access: 10 Best Practices 3: Threat Picture: Unauthorized Access Prevention 4: PMC: Protecting Information with Cybersecurity 5: Cyberpedia: Unauthorized Data Access

Communication over the Internet relies on packet-switched networks. Here’s why:

1.Packet Switching:

oThe Internet uses a packet-switching approach to transmit data.

oIn this method, data is divided into smaller packets before transmission.

oEach packet contains a portion of the original data along with addressing information.

oThese packets are then sent independently across the network.

oAt the destination, the packets are reassembled to reconstruct the original data.

2.Advantages of Packet Switching:

oEfficiency: Packet switching allows multiple users to share the same network resources efficiently.

oRobustness: If a link or node fails, packets can find alternative routes to reach their destination.

oScalability: The network can handle varying traffic loads without significant reconfiguration.

3.Other Options:

oAn IP Alias: An IP alias is an additional IP address associated with a network interface. It is not a requirement for communication over the Internet.

oA LAN (Local Area Network): A LAN is a local network within a limited geographical area. While LANs are essential for local communication, they are not directly required for Internet communication.

oA circuit-switched network: Circuit-switched networks establish dedicated connections between sender and receiver. The Internet does not use this approach.

oAn analog signal: Analog signals were used in older communication systems (e.g., telephone lines), but the Internet primarily relies on digital signals.

References:

•1ITExamAnswers: 5.4.3 Communications Principles Quiz Answers

•2GCFGlobal.org: Computer Basics - Connecting to the Internet

A network architect is a professional responsible for designing and implementing computer networks that meet the needs of an organization. Here are the key aspects of their role:

1.Designing Networks: Network architects create network infrastructures that support an organization’s goals. They work with both hardware and software components to plan and design data communication networks. These networks can range from smaller local area networks (LANs) to larger wide area networks (WANs) and intranets.

2.Installation and Implementation: Once the network design is complete, network architects oversee the installation and implementation process. They ensure that routers, modems, cables, and other necessary hardware and software are properly set up. They also determine the layout of network components within buildings or across cities and countries.

3.Security Management: Network architects play a crucial role in managing information and network security. They implement security measures to protect the network from unauthorized access, data breaches, and other threats.

4.Upgrades and Maintenance: These professionals continuously monitor the network’s performance and assess future needs. They perform upgrades to hardware and software as required. Regular maintenance and minor repairs are essential to keep the network operating smoothly and avoid downtime.

5.Documentation: Network architects maintain thorough documentation of networks, including drawings, descriptions, and configurations. This documentation helps ensure efficient management and troubleshooting.

6.Communication and Collaboration: Network architects often work alongside IT specialists and communicate with management staff. They use their understanding of the organization’s business goals to develop network systems that align with those objectives.

References:

•1Indeed: What Is a Network Architect?

•2Glassdoor: What does a Network Architect do? Role & Responsibilities

•3CareerExplorer: What does a network architect do?

•4Field Engineer: Network Architect Job Description & Salary

In this approach, users stop using the old system, and the new system is put into use immediately1. However, direct conversion can be risky, especially without extensive testing beforehand2.

References

1.W3computing.com

2.Universal CPA Review

The operation that converts raw data into information is A. Processing.

Data transformation involves manipulating and reorganizing raw data to extract meaningful insights and patterns, resulting in useful information1.

References

1.Unleashing the Power of Data Transformation: How to Turn Raw Information into Actionable Insights

1.Arithmetic Logic Unit (ALU):

oThe ALU is a critical component within the CPU. It performs various arithmetic operations (such as addition, subtraction, multiplication, and division) and logic operations (such as comparisons, AND/OR operations, and shifting).

oWhen you perform a calculation on your computer, the ALU processes the numbers involved and produces the result.

oFor example, when you add two numbers in a spreadsheet, the ALU handles the addition operation.

2.Instruction Execution:

oThe CPU executes instructions based on machine code (binary signals represented as 1’s and 0’s).

oThese instructions come from software programs (applications), the operating system, or other components.

oThe CPU fetches an instruction from memory, decodes it, performs the necessary operation (using the ALU), and then stores the result.

oThis process happens at an incredibly fast rate, allowing your computer to perform complex tasks seamlessly.

3.System Bus:

oThe CPU communicates with other components (such as RAM, storage devices, and peripherals) through the system bus.

oThe system bus consists of three types:

Control Bus: Facilitates communication between the CPU and other devices.

Data Bus: Transfers data between different components.

Address Bus: Identifies memory locations for data access.

References

1.What Is a CPU, and What Does It Do? - How-To Geek

2.What Is The Purpose Of The Central Processing Unit (CPU) In A Computer? - Robots.net

3.Central Processing Unit (CPU) - GeeksforGeeks12

•Explanation: System administrators manage the upgrade and installation of new hardware and software, perform troubleshooting to address any problems with computer systems, and assess viruses and potential threats to a company’s network1.

Therefore, the correct answer is D. System administrator.????‍????????

1.URL Anatomy:

oA URL (Uniform Resource Locator) is a unique web address that enables internet users to locate a specific website or online resource without having to know its IP address.

oThe structure of a URL consists of several components, each serving a specific purpose.

2.Domain Name:

oThe domain name is a critical part of the URL.

oIt follows the scheme (protocol) and precedes the path or port (if specified).

oThe domain name is composed of labels separated by dots (periods).

oEach label represents a specific level within the domain hierarchy.

oFor example:

In the URL https://www.example.com/path/to/resource, the domain name is example.com.

In the URL https://blog.example.co.uk, the domain name is blog.example.co.uk.

3.Effective Top-Level Domain (eTLD):

oThe domain name includes the top-level domain (TLD) and the second-level domain (SLD).

oThe TLD specifies the website type and follows the SLD.

oCommon TLDs include .com, .org, and .net.

oGeo-specific TLDs include country codes like .au, .uk, and .in.

4.Subdomain:

oA subdomain is a division of a website.

oWebmasters create subdomains to organize different site areas with distinct functions (e.g., blogs, forums, support portals).

oSubdomains appear before the domain name in the URL.

oExamples:

support.example.com (subdomain: support)

blog.example.co.uk (subdomain: blog)

5.Scheme (Protocol):

oThe scheme specifies the protocol that the server will use to access the page.

oCommon schemes include:

http (Hypertext Transfer Protocol)

https (Hypertext Transfer Protocol Secure)

oThe scheme always precedes the rest of the URL information.

oExample: https://www.example.com

6.Path:

oThe path indicates the specific location on the website where the user wants to go.

oIt can include directories, folders, specific page names, and file names.

oExample: https://www.example.com/path/to/resource

7.Conclusion:

oIn summary, the domain name is the part of the URL that identifies the server hosting the web page.

oIt plays a crucial role in directing users to the correct website.

References

1.What are the parts of a URL? | web.dev

2.Parts of a URL: A Short Guide | HubSpot Blog

An input device is any hardware device that sends data to a computer, allowing you to interact with and control it. Input devices enable users to input information into the computer system. Let’s break down the options:

•Flash Drive (A): A flash drive (also known as a USB drive or thumb drive) is a storage device, not an input device. It allows you to store and transfer data but does not directly input data into the computer.

•CD (B): A CD (compact disc) is also a storage medium, typically used for storing audio, video, or software files. Like a flash drive, it is not an input device.

•Scanner ©: A scanner is a classic example of an input device. It captures physical documents, images, or text and converts them into digital data that the computer can process. Scanners are commonly used for tasks like digitizing photos, creating PDFs, or scanning documents.

•Printer (D): A printer is an output device, not an input device. It produces hard copies (printed documents) based on digital data received from the computer.

In summary, the correct answer is C. Scanner, as it directly inputs data into the computer system.

References:

1.Computer Hope: What is an Input Device?

2.BBC Bitesize: What are input and output devices?

•The software that allows the user to easily access the hardware of a computer is the operating system.

•Explanation: The operating system serves as the interface between hardware, application software, and the user. It manages hardware resources, file systems, processes, and memory.

•References: 12

Therefore, the correct answer is C. Operating system.