Information-Technology-Management Exam Dumps - WGU Courses and Certificates Questions and Answers

In Scrum, the product owner is responsible for maximizing the value of the product by managing the product backlog. This includes prioritizing requirements, refining backlog items, and ensuring that the development team works on the most valuable features first.

Option A: Velocity metrics are typically monitored by the Scrum Master and team, not the product owner.

Option B: Burndown charts are updated by the team, not managed by the product owner.

Option D: Assisting developers with coding and blockers is the responsibility of the Scrum Master and development team.

Thus, the product owner’s main responsibility is to prioritize requirements and manage the backlog.

Purpose of Internet Use Policy in IT Ethics:

An Internet Use Policy is a subset of an organization’s IT ethics policy. It outlines acceptable use of the organization’s internet resources by employees.

By defining clear guidelines, the policy aims to minimize time wasted on personal browsing and ensure internet use aligns with business goals.

Relation to Worker Productivity:

The policy is designed to prevent misuse of the internet (e.g., excessive social media use or visiting non-work-related websites), which can negatively impact productivity.

Encouraging responsible use fosters a professional environment and helps employees focus on work-related tasks.

Why Other Options Are Incorrect:

Option B: Email monitoring may be part of broader IT security policies but is not the focus of Internet Use policies.

Option C: Branding guidelines apply to communication policies, not internet usage policies.

Option D: Printer usage is covered under equipment policies, not internet use policies.

Understanding Virtualization:

Virtualization is the process of creating virtual versions of physical resources, such as servers, storage, or networks, to maximize their utilization.

Cost Reduction and Simplified Management:

Virtualization reduces hardware costs by allowing multiple virtual machines to run on a single physical server.

It simplifies IT management by enabling easier resource allocation, scaling, and disaster recovery.

Why Other Options Are Incorrect:

Option A: Virtualization increases resource availability, not restricts it.

Option C: Virtualization enhances workload distribution, reducing stagnation.

Option D: It reduces reliance on manual operations by enabling automation and centralized control.

Integration testing focuses on ensuring that different modules or components of the system work together correctly. This validates that individual units, once combined, interact seamlessly and produce the expected results.

Option B (Parallel testing): Compares old and new systems running together.

Option C (Unit testing): Tests individual components in isolation.

Option D (Acceptance testing): Validates the entire system with user requirements.

Thus, the type of testing that ensures components work together is Integration testing.

Purpose of a Prototype:

A prototype is an interactive model that demonstrates how a system or interface works.

It allows clients to experience the functionality and interaction before full-scale development.

Why Other Options Are Incorrect:

Option A: Prototypes are not detailed development instructions.

Option C: Prototypes are not blueprints but are functional models.

Option D: Prototypes are dynamic and interactive, unlike static examples.

Understanding Data Models:

A data model is a logical data structure that uses visual representations (e.g., diagrams) to illustrate relationships among data elements.

It helps in organizing data and defining how various entities interact within a database system.

Application in the Scenario:

The use of graphics to illustrate data relationships aligns with the concept of a data model.

Examples include entity-relationship diagrams (ERDs) and conceptual models.

Why Other Options Are Incorrect:

Option A (Integration): Integration connects systems or data sources but does not represent data relationships graphically.

Option B (Structured Query Language): SQL is used for querying and managing databases, not visualizing data structures.

Option D (Relational database model): This defines a specific type of database architecture but does not inherently involve graphics.

A primary key in a relational database table is used to uniquely identify each record in that table. It enforces entity integrity by ensuring that each row can be distinguished from every other row. A primary key must contain unique values and it cannot contain NULL values. This guarantees that every record is distinct and can be retrieved, updated, or related to other records efficiently.

The primary key serves as the central reference point when creating relationships between tables through the use of foreign keys, thus enabling referential integrity within the database. Without a primary key, it would not be possible to maintain consistent and reliable relationships across different tables.

Option A is incorrect because connecting tables to external systems is not the role of a primary key; this function is handled through integration tools or middleware.

Option B is incorrect because managing user access is controlled by database access control mechanisms, not primary keys.

Option D is incorrect because improving storage efficiency is related to data normalization, indexing, and storage optimization, not primary key assignment.

Therefore, the correct function of a primary key is to identify each record in a table uniquely, ensuring data integrity and reliable referencing across the database.

Green computing practices aim to reduce environmental impact by lowering energy use, minimizing e-waste, and extending hardware life cycles. One of the most effective practices is to extend device life through reuse and refurbishment. This prevents premature disposal, reduces demand for new hardware manufacturing, and lowers overall environmental impact.

Option B: Incorrect—prioritizing high performance can increase energy consumption and is not necessarily sustainable.

Option C: Incorrect—economical hardware does not always mean environmentally sustainable.

Option D: Incorrect—recycling is important, but refurbishment and reuse extend usable life and reduce waste earlier.

Thus, the IT practice that best supports green computing is extending device life with reuse and refurbishment.

Linux is an open-source, Unix-like operating system widely used for servers, cloud computing, and high-performance workstations. It offers flexibility, security, and customization, making it the preferred choice for enterprise and web hosting environments.

Embedded operating systems are lightweight operating systems designed for specialized hardware with specific functions. These are often Linux-based and optimized for devices such as point-of-sale (POS) systems, industrial controllers, smart appliances, and medical devices. They provide stability, security, and resource efficiency in environments where the device is dedicated to one or a few specialized tasks.

Option A: Refers to general-purpose desktop OS (e.g., Windows, macOS), not specialized.

Option B: Refers to Chrome OS, which is designed for laptops and cloud computing.

Option D: Refers to mobile OS (Android/iOS), focused on consumer use, not industrial or specialized embedded devices.

Thus, the correct answer is a Linux-based embedded operating system.