100+ Free F5-303 Practice Questions

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Question 1

Score: 0/0

Which OWASP Top 10 category does ASM's attack signature for SQL injection primarily address?

A01: Broken Access Control

A03: Injection

A05: Security Misconfiguration

A07: Identification and Authentication Failures

to track

2026 Statistics

Key Facts: F5-303 Exam

245/350

Passing Score (scaled)

F5 (~70%)

Exam Questions

70 scored + 10 pilot

90 min

Time Limit

$180

Exam Fee

Pearson VUE

F5-CA

Prerequisite

Exam 201 active

2 years

Certification Validity

F5 303 is a Technology Specialist exam for BIG-IP ASM / Advanced WAF. It has 80 questions (70 scored, 10 pilot) in 90 minutes, requires a scaled score of 245/350 (~70%) to pass, and costs $180 USD at Pearson VUE. The prerequisite is an active F5-CA (exam 201). Passing 303 grants the F5 Certified Technology Specialist, ASM credential and counts toward F5-CTP (ASM track). Certifications are valid 2 years.

Sample F5-303 Practice Questions

Try these sample questions to test your F5-303 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which OWASP Top 10 category does ASM's attack signature for SQL injection primarily address?

A.A01: Broken Access Control

B.A03: Injection

C.A05: Security Misconfiguration

D.A07: Identification and Authentication Failures

Explanation: SQL injection signatures address OWASP A03: Injection, which covers SQL, NoSQL, OS, and LDAP injection attacks. ASM ships hundreds of signatures organized by attack type and system. Injection has consistently ranked in the OWASP Top 10 since its inception. Other categories require different mitigations such as authentication policies, login enforcement, or session controls.

2What is the primary purpose of an ASM security policy?

A.To replace the BIG-IP LTM virtual server

B.To enforce a positive and negative security model on HTTP/HTTPS traffic

C.To terminate SSL connections

D.To perform Layer 4 load balancing

Explanation: An ASM security policy enforces a positive security model (allow-list of expected behavior) combined with a negative security model (attack signatures) on HTTP/HTTPS traffic. SSL termination, Layer 4 load balancing, and virtual server functions are LTM responsibilities. ASM is attached to a virtual server via an HTTP profile and a security policy assignment.

3Which deployment template requires the least administrator interaction to put a policy in production?

A.Comprehensive

B.Rapid Deployment

C.Vulnerability Assessment

D.Manual Policy Creation

Explanation: The Rapid Deployment template enforces only a curated set of generic violations (signatures plus a small subset of evasion checks) and is designed for fast time-to-protection with minimal tuning. The Comprehensive template enables more violations and entity learning. Manual creation requires the most work, while Vulnerability Assessment imports findings from a scanner.

4What is a 'wildcard' in an ASM policy?

A.A blanket exemption from all signatures

B.An entity (URL, parameter, header) that matches any value not specifically defined

C.A virtual server placeholder

D.A signature group selector

Explanation: A wildcard entity matches any URL, parameter, or other element not explicitly defined in the policy. Wildcards allow ASM to apply policy to broad classes of objects while letting administrators create explicit entries for known-good entities. They are essential for both manual and automatic policy building approaches.

5What does it mean when an attack signature is in 'staging'?

A.The signature is disabled

B.Matches are logged but do not trigger blocking, allowing tuning before enforcement

C.The signature is automatically removed

D.The signature only runs in development environments

Explanation: Signatures in staging are evaluated and matches are logged, but the signature does not contribute to blocking even if blocking is enabled for the policy. Staging gives administrators a chance to identify and resolve false positives before fully enforcing the signature. Once tuning is complete, signatures are taken out of staging to enforce.

6Which HTTP profile setting must be enabled on the virtual server before ASM can inspect HTTP traffic?

A.X-Forwarded-For insertion

B.An HTTP profile attached to the virtual server

C.Compression

D.HTTP/2 ingress

Explanation: ASM requires an HTTP profile on the virtual server because ASM operates at the HTTP layer. Without an HTTP profile, traffic is treated as opaque TCP and ASM cannot parse it. X-Forwarded-For, compression, and HTTP/2 are useful options but are not mandatory for ASM to inspect requests.

7What is the role of the Policy Builder in ASM?

A.To export policies to XML

B.To automatically build and refine an ASM policy from observed traffic

C.To compile attack signatures

D.To manage SSL certificates

Explanation: The Policy Builder analyzes traffic and generates learning suggestions or, in fully automatic mode, applies them to refine the security policy. It can be configured for trusted traffic (faster acceptance) or untrusted traffic (more samples required). Manual mode disables automatic policy changes and only generates suggestions.

8Which violation is triggered when an HTTP request contains a parameter that is not defined in the security policy and wildcard parameters are not allowed?

A.VIOL_HTTP_PROTOCOL

B.VIOL_PARAMETER

C.VIOL_PARAMETER_NAME_METACHAR

D.VIOL_FILETYPE

Explanation: VIOL_PARAMETER (or 'Illegal parameter') is triggered when a parameter is not defined and the wildcard does not allow it. VIOL_PARAMETER_NAME_METACHAR fires when an illegal metacharacter appears in a parameter name. VIOL_HTTP_PROTOCOL covers RFC compliance issues, and VIOL_FILETYPE handles disallowed file extensions.

9In ASM, what is the difference between Transparent and Blocking modes for the security policy enforcement?

A.Transparent only logs; Blocking logs and blocks violating requests

B.Transparent encrypts traffic; Blocking decrypts it

C.Transparent runs on the management plane; Blocking runs on the data plane

D.There is no difference

Explanation: In Transparent mode, ASM detects and logs violations but allows requests through. In Blocking mode, ASM both logs and blocks requests that trigger violations marked as 'block'. Transparent mode is typically used during initial deployment and tuning; Blocking mode is the production enforcement mode.

10Which ASM feature masks sensitive data such as credit card numbers in logged HTTP responses?

A.DataSafe

B.Data Guard

C.Anti-Bot Mobile SDK

D.Bot Defense

Explanation: Data Guard inspects HTTP responses and masks (or blocks) sensitive content such as credit card numbers, U.S. Social Security numbers, and custom regex patterns before the response leaves the BIG-IP. DataSafe is a separate add-on focused on protecting client-side credentials and form fields. Bot Defense and Anti-Bot SDK target automation, not data leakage.

About the F5-303 Exam

F5 303 (BIG-IP ASM Specialist / Advanced WAF Specialist) validates expert-level skills in designing, implementing, and maintaining F5 BIG-IP ASM and Advanced WAF deployments. The exam covers ASM policy creation (Rapid Deployment, Comprehensive, automatic Policy Builder), attack signatures with staging, parameter-level checks, JSON/XML content profiles, OpenAPI/Swagger import, WebSocket inspection, behavioral L7 DoS, bot defense (proactive + Mobile SDK), credential stuffing protection, brute force, CSRF, login enforcement, Data Guard, DataSafe, IP Intelligence, geolocation, ASM iRule events (ASM_REQUEST_DONE), and operational topics including logging, reporting, CMP, and HA.

Questions

80 scored questions

Time Limit

90 minutes

Passing Score

245/350 (~70%)

Exam Fee

$180 (F5 / Pearson VUE)

F5-303 Exam Content Outline

20%

Assess Security Needs and Choose an ASM Policy

OWASP Top 10, deployment-method selection (Rapid Deployment, Comprehensive, manual, automatic), policy granularity, security/manageability trade-offs

30%

Create and Customize Policies

Wildcards, signatures + staging, custom signatures, parameters (sensitive/mandatory/metachar), content profiles (JSON/XML/GWT), OpenAPI import, CSRF, Data Guard, iCAP, evasion techniques, file types

15%

Maintain Policy

Interpret event logs, support ID correlation, traffic learning suggestions, signature update workflow, react to application change

20%

Administer and Evaluate ASM Implementation

Performance metrics, blocking vs transparent, PCI compliance report, policy export/import/merge/diff/revert, parent/child policies, HA/DSC, CMP, user roles

15%

Advanced WAF Features

Bot Defense (proactive, device ID, Mobile SDK), behavioral L7 DoS (TPS-based + stress-based), brute force, credential stuffing, login enforcement, DataSafe, Threat Campaigns, IP Intelligence, geolocation

How to Pass the F5-303 Exam

What You Need to Know

Passing score: 245/350 (~70%)
Exam length: 80 questions
Time limit: 90 minutes
Exam fee: $180

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

F5-303 Study Tips from Top Performers

1Build a BIG-IP VE lab provisioned with ASM/Advanced WAF and practice each deployment template (Rapid Deployment, Comprehensive, automatic Policy Builder)

2Master signature staging — know the difference between 'staging', 'enforced', and 'disabled' and how the Enforcement Readiness Period works

3Practice tuning false positives via the Traffic Learning page — accept, ignore, or delete suggestions and observe policy changes

4Configure both TPS-based and behavioral (stress-based) L7 DoS profiles and observe dynamic-signature creation under simulated attack

5Set up Bot Defense with proactive challenges and Device ID; pair with brute force protection to track clients across IP changes

6Memorize key violations (VIOL_PARAMETER, VIOL_FILETYPE, VIOL_HTTP_PROTOCOL, VIOL_COOKIE_MODIFIED, VIOL_FLOW, VIOL_CSRF, VIOL_SESSION_HIJACKING)

7Practice using the Support ID to correlate the user-facing block page with event log entries

8Use our AI tutor to explain the policy lifecycle, signature systems, and Advanced WAF features

Frequently Asked Questions

What is the F5 303 BIG-IP ASM Specialist exam?

Exam 303 is the F5 Certified Technology Specialist exam for BIG-IP ASM / Advanced WAF. It validates skills to design, implement, and maintain ASM, including policy building, attack signatures, parameter and content profiles, bot defense, behavioral L7 DoS, CSRF, login enforcement, and operational topics. The exam has 80 questions (70 scored + 10 pilot) in 90 minutes.

What are the prerequisites for the F5 303 exam?

You must hold an active F5 Certified BIG-IP Administrator (F5-CA) credential. F5-CA requires passing exam 101 (Application Delivery Fundamentals) followed by exam 201 (TMOS Administration). Exam 303 cannot be scheduled until F5-CA shows active in your CertView profile.

What is the passing score for F5 303?

F5 303 uses a scaled score with a passing threshold of 245 on a scale of 100 to 350, approximately 70% of the scoring range. Of 80 items, 70 are scored and 10 are unscored pilot questions whose performance shapes future exams.

How much does the F5 303 exam cost?

The 303 exam costs USD $180 at Pearson VUE, both onsite and via online proctoring. Retakes carry the same fee. F5 enforces a 15-day waiting period before the first retake and 30 days after the second failure.

What credential do I earn by passing F5 303?

Passing 303 grants the F5 Certified Technology Specialist, ASM credential. Combined with F5-CA, it also counts toward F5-CTP (Certified Technical Professional, ASM track). Holding 303 is required to pursue the F5-CSE Security (401) Solution Expert credential.

How long is the F5 303 / Technology Specialist credential valid?

F5 certifications are valid for 2 years. To recertify, retake the current version of 303 or pass a higher-level F5 exam (such as the 401 CSE Security) before expiration. Letting it lapse drops the credential and any dependent CTP/CSE titles.