D487 PKEO 2025/2026 – 50+ Verified Q&A on BSIMM, Threat Modeling, Secure SDLC, STRIDE, PASTA, Agile, Scrum, OWASP, and Vulnerability Mitigation

This exam-ready guide for D487 PKEO (Performance Knowledge Exam Objective) in Application Security (2025/2026) provides 50+ thoroughly verified questions and correct answers. Built around current cybersecurity frameworks and software development methodologies, this resource is essential for students pursuing Secure Coding, Application Security, DevSecOps, or cybersecurity certification courses such as those offered by WGU and similar institutions. This study material breaks down key technical concepts into exam-simulated questions across critical domains such as threat modeling, vulnerability management, software development frameworks (Waterfall, Agile, Scrum, XP), and BSIMM (Building Security In Maturity Model). The content reflects updated security protocols, testing procedures, and real-world software assurance strategies. Key topics include: – Security Methodologies & Frameworks: BSIMM – benchmarking real-world secure software initiatives PASTA – Process for Attack Simulation & Threat Analysis STRIDE – Spoofing, Tampering, Repudiation, Info Disclosure, DoS, Elevation SSDL (Secure Software Development Lifecycle) – Threat Modeling & Mitigation: SDL project planning Standard countermeasure application Risk profile definition Architecture and policy compliance analysis – Development Methodologies: Waterfall, V-model, Agile, Scrum, XP Role-specific responsibilities: ScrumMaster, Product Owner, Developer, Project Manager Requirement types: Every-sprint, bucket requirements – Application Security Best Practices: Secure system configuration Privacy controls and access restrictions Preventing buffer overflows in C++ Third-party component vetting and patching Error handling and URL manipulation risks – Tools & Techniques: OWASP ZAP for passive and active scanning Abstract Syntax Tree (AST) analysis Exploratory vs. scheduled testing Log file protection and audit access Ideal for: – Students in D487 or similar cybersecurity/application security courses – Learners preparing for WGU cybersecurity certifications – Professionals in DevSecOps, secure software development, or QA security testing – Anyone needing quick recall of core software security principles and testing models Clear, concise, and directly aligned with exam objectives, this document is a top-tier choice for mastering performance knowledge in secure application development. Keywords: D487 PKEO, BSIMM, PASTA, STRIDE, SSDL, threat modeling, application security, secure SDLC, OWASP ZAP, buffer overflow, C++, AST, exploratory testing, agile scrum, every-sprint requirement, secure configuration, vulnerability response, product risk profile, software security, WGU cybersecurity, DevSecOps