F5 F5-303 Practice Test

F5-303 practice test: what's covered

• BIG-IP ASM
• Advanced WAF
• L7 protection

Free F5-303 sample questions

1. A team is enabling BIG-IP ASM for a web application and needs to attach the security policy at the correct object. Where should the ASM policy be associated for traffic to be inspected?

   • A. On a Virtual Server that also has an HTTP profile, with the policy assigned directly or via an LTM policy
   • B. On the default route so every packet leaving the device is inspected by ASM
   • C. On the pool member nodes so each backend server enforces the policy
   • D. On the management interface so out-of-band traffic is also protected
   Show answer

   Correct: A. ASM is enforced per Virtual Server and requires an HTTP profile so the system can parse Layer 7 requests; the policy is attached directly or selected by an LTM policy. Routes and pool members are not policy attachment points because ASM inspects HTTP at the VS, not at network or backend layers, and the management interface carries administrative traffic, not application traffic.

2. During a maintenance window an administrator switches a newly built policy from Transparent to Blocking enforcement mode. What behavioral change should they expect for traffic matching blocking-enabled violations?

   • A. ASM stops generating any event logs once blocking mode is active
   • B. ASM now actively blocks, resets, or returns the blocking response page instead of only logging the violation
   • C. ASM begins learning new entities automatically without administrator review
   • D. ASM disables all attack signatures until the next live update completes
   Show answer

   Correct: B. In Transparent mode ASM logs violations without enforcing, whereas Blocking mode acts on violations whose Block flag is enabled, returning the blocking page or resetting the connection. Logging continues in blocking mode, so that option is incorrect; enforcement mode does not control automatic learning, and signatures are not disabled by switching modes.

3. An architect is sizing an Advanced WAF deployment and evaluating where ASM can run across the BIG-IP portfolio. Which deployment statements about ASM placement are accurate? (Choose TWO)

   • A. ASM is supported on a vCMP guest, with each guest running its own provisioned ASM instance
   • B. ASM on iSeries or rSeries appliances can leverage hardware crypto offload for higher TLS-inspected throughput
   • C. ASM can only be provisioned on a standalone physical appliance and never on a Virtual Edition
   • D. ASM policies are stored on the connected pool members rather than on the BIG-IP itself
   • E. ASM requires the management plane to proxy all client traffic before inspection occurs
   Show answer

   Correct: A and B. vCMP guests each provision their own ASM, and hardware appliances accelerate TLS-heavy WAF workloads through crypto offload. ASM also runs on Virtual Edition, so the standalone-only claim is incorrect; policies live on the BIG-IP, not on pool members, and client traffic flows through the data plane, not the management plane, making those distractors wrong.

4. Two distinct applications share a single Virtual Server, and each needs different ASM tuning. What is the recommended way to apply separate ASM policies based on the requested host or URL?

   • A. Merge both applications into one oversized policy with every entity allowed
   • B. Use an LTM policy on the Virtual Server to map host or URL to the matching ASM policy
   • C. Disable ASM on the shared Virtual Server and rely on network ACLs instead
   • D. Provision a second BIG-IP solely to host the second application policy
   Show answer

   Correct: B. An LTM policy (or URL-based policy switching) inspects request attributes such as Host or path and assigns the appropriate ASM policy, keeping per-application tuning isolated. A single merged policy weakens positive security, disabling ASM removes protection entirely, and adding hardware is unnecessary because one VS can serve multiple ASM policies.

5. A new public web application must get baseline WAF protection on day one with minimal manual tuning. Which built-in policy template best fits this requirement?

   • A. A Rapid Deployment template providing signatures and DataGuard with minimal initial configuration
   • B. An empty policy template containing no signatures so traffic flows untouched
   • C. A SOAP-only template that validates WSDL but ignores HTML form parameters
   • D. A passive monitoring template that disables all enforcement permanently
   Show answer

   Correct: A. The Rapid Deployment policy applies attack signatures and DataGuard with sensible defaults, giving immediate negative-security coverage that you harden over time. An empty policy offers no protection, a SOAP template targets XML web services rather than general HTML apps, and no standard template permanently disables enforcement, so those options are incorrect.

Last updated: 2026-10-19

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