Free SDSI practice test — 284+ SDSI practice questions with detailed explanations across all 4 official SDSI exam domains. Every set is scored and drawn from the live question bank — so you practise exactly what the exam tests, not outdated dumps.
Courseiva includes 284+ Cisco Designing Cisco Security Infrastructure (SDSI, 300-745, CCNP Security, design-focused) (SDSI) practice questions across the official exam domains.
Feature
Courseiva
This free SDSI practice test mirrors the structure and difficulty of the real Cisco Designing Cisco Security Infrastructure (SDSI, 300-745, CCNP Security, design-focused) (SDSI) exam. Every question is written against the official 2026 exam blueprint published by Cisco, ensuring you practise exactly what the exam tests — not last year's objectives.
The SDSI blueprint is divided into 4 weighted domains. Questions on this page are distributed proportionally across each domain, so the mix you see here reflects the same weighting you'll face on exam day. High-weight domains like AI Automation And Devsecops and Risk Events And Requirements contribute the most questions, meaning focused practice on these areas gives you the highest return on study time.
SDSI Exam Blueprint — 4 Domains
AI Automation And Devsecops
Risk Events And Requirements
Secure Infrastructure Design
Application Security Design
22 numbered sets, 4 domain question banks, and targeted sessions — every page is a unique set of questions.
Choose all correct answers
Each chapter page covers one topic in depth — theory, key concepts, and focused practice questions. Use these to close knowledge gaps before returning to full practice tests.
Getting the most from practice questions requires more than just clicking through answers. Here is the study method used by candidates who pass SDSI on their first attempt:
Answer before revealing
Read each SDSI question fully, eliminate obviously wrong choices, then commit to an answer before clicking to reveal. This active recall process is what builds lasting knowledge.
Read every explanation
Even when you answer correctly, read the full explanation. Knowing WHY the right answer is correct — and why the distractors are wrong — is what separates a 750 score from a 900 score.
Track weak domains
Note which SDSI domains you get wrong most often. Then do a targeted 20-30 question session focused only on that domain until your accuracy improves.
Simulate exam pacing
The real SDSI is 90 minutes long. Use timed sessions to build the concentration and pacing you will need on exam day.
Most candidates who pass SDSI on their first attempt report doing between 400 and 800 practice questions over 4–8 weeks of preparation. With 284+ questions in the Courseiva bank, you have more than enough material to build that repetition without seeing the same question twice.
Answer each question to reveal the full explanation and correct answer. This starter set is drawn from all 4 exam domains in blueprint proportion. Use the session selector to start a longer focused practice run.
Which aspect of AI-driven security automation helps in 'Reducing Mean Time to Respond (MTTR)'?
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A security architect is adapting a design post-incident after a credential theft event. Which Cisco ISE feature should be integrated into the architecture to mitigate the risk of compromised static credentials?
Select an answer to reveal the explanation
A network security designer is evaluating email security solutions. Which feature in Cisco Secure Email (ESA) is most effective against sophisticated Business Email Compromise (BEC) attacks?
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You are designing security for a SaaS application integrated via Cisco Cloudlock. Which mechanism allows you to detect anomalous data sharing behavior within Google Workspace?
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A SOC analyst requires a tool to gain visibility into encrypted traffic without full decryption. Which Cisco product feature should be included in the design to meet this requirement?
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A design architect is updating an incident response strategy. What is the role of the 'Post-Incident Architecture Adaptation' phase?
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Following a major data exfiltration incident, the design team needs to adapt the architecture to prevent lateral movement. Which Cisco Secure Firewall design modification is most effective for mitigating this risk while maintaining operational performance?
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An organization is updating its SOC incident response toolset. Which Cisco technology provides the ability to perform 'retrospective security' by tracking files that have entered the network in the past?
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Following a ransomware incident, an architect must modify the network segmentation strategy. What is the most effective approach to mitigate lateral movement using Cisco TrustSec?
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Which risk assessment methodology is best suited to guide a design modification for a cloud-native architecture relying on Cisco Secure Cloud Analytics?
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You are designing application security for a new customer-facing web application hosted on Cisco ACI with a Cisco Secure Firewall (formerly Firepower) cluster managed by Cisco Secure Firewall Management Center. The application uses a REST API that authenticates users via OAuth 2.0 bearer tokens. The security team wants to detect and block attacks that exploit business logic in the API, such as manipulating order quantities or bypassing approval steps, without breaking legitimate token-based traffic. Which design approach should you recommend?
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A risk assessment reveals that internal servers are vulnerable to unauthorized access via SMB protocols. Which Cisco feature should be implemented on the internal switching infrastructure to mitigate this risk?
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You are designing microsegmentation for a Kubernetes cluster using Cisco Tetration (Secure Workload). Which specific architectural component must be deployed within the Kubernetes worker nodes to enforce policy without relying on external firewall hairpining?
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A security architect is developing a requirements document for a SOC. Which Cisco capability allows the SOC to prioritize alerts by correlating threats across network, endpoint, and cloud?
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What is the primary function of Cisco pxGrid in a network design?
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When designing an API security architecture, what is the primary purpose of 'API Discovery' in the context of Cisco API Security?
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A security architect is configuring Cisco SecureX for the first time. Which is the most important step to enable centralized incident response?
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You are implementing automated policy enforcement for Cisco Secure Access by Duo. Which API allows you to programmatically manage users and authentication settings?
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When designing a VPN solution for a hybrid workforce, which protocol provides the most robust support for DTLS to minimize latency for real-time traffic?
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Which risk assessment technique involves evaluating the impact of an attack on the confidentiality, integrity, and availability of an asset?
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Answer all 20 questions to see your domain score breakdown
A structured study plan dramatically increases your chances of passing SDSI on the first attempt. The most effective approach combines reading the official Cisco documentation or a study guide, watching video explanations for difficult concepts, and then reinforcing everything with daily practice questions.
We recommend the following weekly structure for SDSI preparation:
Cover each SDSI domain systematically. Read the exam objectives, watch explanatory content, and do 10–20 practice questions per domain to test understanding as you go.
Run full 50–60 question mixed sessions daily. Review every wrong answer in detail. Identify which domains are consistently scoring below 70% and revisit those study materials.
Do 100–120 question timed sessions to simulate real exam conditions. Aim for consistent scores above 80% before booking your exam date. A score above 80% in practice typically translates to a passing SDSI score.
On exam day, the SDSI tests your ability to apply knowledge to realistic scenarios — not just recall definitions. This is why reading explanations and understanding the reasoning behind every answer matters more than simply grinding question volume. Use the high-count sessions (100, 120) in the final weeks as your confidence benchmark.
Time limit
90 min
Official time limit
Cisco passing scores vary by exam version and are not always publicly listed. Check the official Cisco exam page before booking.
CLI output interpretation, network topology analysis, routing behaviour, switching concepts, troubleshooting, and configuration questions.
Yes. Courseiva provides free Cisco Designing Cisco Security Infrastructure (SDSI, 300-745, CCNP Security, design-focused) (SDSI) practice questions with explanations across the official exam domains. Start with a quick practice test, then continue with topic-based practice, mock exams, missed-question review, bookmarked questions, weak-topic recommendations, and readiness tracking. No account required. Create a free account to unlock per-domain analytics and progress tracking across every certification on the platform. Courseiva is free forever, supported by advertising.
Every question is written against the official SDSI exam blueprint published by Cisco. Our questions follow the same wording style, scenario complexity, and answer structure as the actual exam. They are original questions — not brain dumps — so you learn the underlying concepts and reasoning, not just memorised answers. Candidates who study with brain dumps often pass but have no transferable knowledge; Courseiva questions make you genuinely competent.
Most candidates who pass SDSI on their first attempt do 30–60 questions per day. Use the Quick 10 session for daily warm-ups when you are short on time. On study days, run a 50 or 60-question session to build stamina. Reserve 100 and 120-question sessions for the final two weeks when you want to simulate real exam conditions and benchmark your readiness.
The SDSI covers 4 domains: AI Automation And Devsecops, Risk Events And Requirements, Secure Infrastructure Design, Application Security Design. Each domain carries a different weight, so allocate your study time accordingly. The highest-weighted domains — AI Automation And Devsecops and Risk Events And Requirements — should receive the most attention.
Exam dumps are memorised question-and-answer lists taken from actual exam papers, often obtained illegally and shared without Cisco's authorisation. Using them violates your NDA and Cisco's certification agreement, and can result in certification revocation. Courseiva questions are original — AI-assisted, checked against the official exam objectives, and published under the editorial oversight of an engineer with 12+ years' experience. They test the same knowledge areas using new scenarios and wording. You learn the material, not just the answers.
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