303 Sample Questions & Answers
Expect an even split across judging web-application attacks and picking the right ASM policy, building and customizing policies, refining them from log and learning data, and administering the lifecycle of attack signatures.
Launch the full 303 simulator →Showing 6 of 12 free samples.
- Question 1Advanced
Assess security needs and choose an appropriate ASM policy · Choose the appropriate policy features and granularity
A healthcare provider is deploying a highly sensitive patient portal. The application is stable with updates occurring only twice a year. The security requirements mandate a strict positive security model where only explicitly defined URLs, parameters, and file types are permitted. Any deviation must be immediately blocked and logged.
However, the security team has limited staff and cannot manually define the thousands of parameters before the launch next month.
Which approach balances these constraints while achieving the required security posture?
Show answer & explanation
Correct answer: C
For a stable application requiring a strict positive security model (explicit URLs, parameters, file types), a Comprehensive policy is required. Since manual definition is impossible due to staff constraints and timeline, using the Automatic Policy Builder during a rigorous QA/testing phase allows ASM to learn the expected traffic patterns automatically. Switching to blocking mode before launch meets the strict security mandate.
- Question 2Beginner
Assess security needs and choose an appropriate ASM policy · Evaluate the implications of changes in the policy to the security and vulnerabilities of the application
When evaluating the trade-offs of ASM policy configuration, increasing the security level by enforcing strict parameter lengths and data types will typically have which corresponding effect?
Show answer & explanation
Correct answer: D
Implementing a strict positive security model (granular parameters, strict lengths, specific data types) significantly increases security but directly increases the risk of false positives if users submit valid but unexpected data. This approach also requires higher administrative effort (manageability) to maintain as the application evolves.
- Question 3Beginner
Assess security needs and choose an appropriate ASM policy · Determine the most appropriate deployment method for a given set of requirements
True or False: If an application undergoes significant structural changes daily, a Comprehensive policy with explicit entities built manually is the most efficient and secure deployment method.
Show answer & explanation
Correct answer: B
False. Applications with a high rate of change are poorly suited for manually built Comprehensive policies because the constant updates would generate massive amounts of false positives and require unmanageable administrative overhead. A Rapid Deployment policy or an automatically built policy is far more appropriate.
- Question 4Intermediate
Assess security needs and choose an appropriate ASM policy · Choose the appropriate policy features and granularity
An administrator is deciding on the level of policy granularity for a new ASM deployment. They must choose between defining parameters globally or defining them on a per-URL basis. What is the primary advantage of choosing per-URL parameter definition?
Show answer & explanation
Correct answer: A
Per-URL parameter definition provides a much tighter positive security model. A parameter named 'id' might be expected as an integer on '/view_profile.php' but as an alphanumeric string on '/search.php'. Global parameters apply the same rules everywhere, whereas per-URL parameters restrict the parameter strictly to the endpoint that requires it.
- Question 5Intermediate
Assess security needs and choose an appropriate ASM policy · Determine the most appropriate deployment method for a given set of requirements
A security consultant is reviewing an ASM implementation and notes that the organization is using a generic 'Rapid Deployment' policy for an application that handles highly sensitive financial transactions. Which of the following is a key limitation of relying solely on a Rapid Deployment policy in this context?
Show answer & explanation
Correct answer: A
The Rapid Deployment template relies primarily on a negative security model (attack signatures, HTTP RFC compliance). While excellent for quick deployment and baseline security, it does not build a positive security model (explicitly defining allowed URLs, parameters, and file types), which is critical for protecting highly sensitive financial applications against zero-day logic flaws.
- Question 6Intermediate
Assess security needs and choose an appropriate ASM policy · Explain the potential effects of common attacks on web applications
To mitigate the OWASP Top Ten risk of 'Cross-Site Request Forgery (CSRF)', BIG-IP ASM injects a unique token into the application's responses. For this mitigation to function correctly, which prerequisite must be met within the ASM policy?
Show answer & explanation
Correct answer: A
CSRF attacks exploit an active, authenticated session. To protect against CSRF, ASM needs to track sessions. This requires configuring session tracking (often tied to Login Pages or specific session cookies) so ASM knows when to inject the CSRF token into HTML responses and validate it on subsequent state-changing requests.
Ready for the real thing?
The full 303 simulator has every exam-style question, timed mode, and instant scoring.