A security audit is a systematic evaluation of an organization's information systems. The primary goal is to check whether the system's security measures align with established security policies and best practices. It ensures the organization meets required security standards and mitigates risks.

Continuous Integration (CI) involves frequently integrating code changes, often several times a day, into a shared repository. Automated builds and tests are run to detect integration issues early, allowing teams to address them when they're easier and less costly to fix, rather than facing integration problems during the final stages of development.

In incremental integration testing, "top-down" and "bottom-up" approaches signify the sequence and direction of integration. "Top-down" begins with the main function and progressively integrates modules, whereas "bottom-up" starts with modules, integrating them into the main function.

Distributed teams, especially across different time zones, can face multiple Configuration Management challenges. There might be a time lag in version updates, leading to potential code conflicts. Teams might use tools differently or even different versions of tools. Additionally, environment setups might differ, leading to the "works on my machine" problem. Effective communication, standardized tools, and periodic sync-ups can help address these issues.

False positives refer to warnings or indications produced by automated static analysis tools that are not actual issues in the code. While they can cause initial concern, upon review, they turn out to be irrelevant or incorrect. It's essential to distinguish them from real issues to ensure productive and accurate software testing.

System testing is conducted after integration testing to ensure the overall functionality of the entire system. While integration testing focuses on the interfaces between integrated units, system testing evaluates the system's behavior as a whole, ensuring all components work harmoniously together.

User Acceptance Testing (UAT) is the last phase in the testing process before the software application is handed over to the customer. During UAT, actual software users test the software to ensure it can handle required tasks in real-world scenarios, as per their business requirements.

End-to-end testing typically fits just before deployment in the Continuous Delivery (CD) pipeline. In the CI/CD model, continuous integration deals with the frequent merging of code and running unit tests to ensure code integrity. The CD pipeline, on the other hand, ensures that the integrated code is consistently in a deployable state. End-to-end testing, which tests the flow of an application from start to finish, ensures that the system behaves as expected and identifies system-level issues before actual deployment.

A test strategy lays out the overall approach and objectives for testing, ensuring they are in harmony with the project's goals. This alignment is critical because it ensures that the testing efforts support the broader project aims, focusing on delivering quality and value to the stakeholders. It sets the direction, scope, resources, and timeline for the testing activities.

During Performance Testing, the system's performance is evaluated under various conditions to ensure it meets the desired criteria. Metrics like throughput (transactions per second or tasks per time unit), response times (how long it takes to respond to a request), and resource utilization (CPU, memory usage) are key indicators that help testers understand the system's performance behavior.