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

Developing questions for the survey that are directly related to customers' application preferences is a practice that would help ensure collecting quality data.
Nadia should focus on relevant questions related to application preferences to gather accurate data.
References
1.WGU Introduction to IT (KSO1) Algorithm1.

The core responsibility of a database administrator (DBA) centers around managing and optimizing Database Management Systems (DBMS). This includes:
*Installation and Configuration: Setting up new database instances, applying relevant configurations, and ensuring they align with the organization's needs.
*Maintenance: Performing regular backups, security updates, and patch management to keep the databases secure and healthy.
*Performance Analysis: Monitoring database performance, identifying bottlenecks, and implementing optimizations to ensure efficient data retrieval and operations.
*Troubleshooting: Proactively addressing database errors, resolving operational issues, and ensuring data integrity.

Hierarchical databases use a parent-child relationship model. In this type of database, data is organized into a tree-like structure that implies a single-parent for each record. This model allows the representation of data in a hierarchy which is very much like a family tree. Each parent can have multiple children, but each child has only one parent (also known as a one-to-many relationship).
The hierarchical database model was one of the first database models, historically used with mainframe computers. In this model, records contain information about their groups of parent/child relationships, similar to a family tree. If we consider a database of employees,each department would be a parent node, and each employee within that department would be a child node of the department.
References: The concept of parent-child relationships in databases is well-established and discussed in various educational resources and forums. For example, Stack Overflow provides explanations of how these relationships work in practice12. Additionally, other resources like phoenixnap.com explain how these relationships are established in databases3.