How should I use these Secure Infrastructure Design practice questions?

Read each scenario carefully and choose your answer before revealing the explanation. Then check why your choice was right or wrong. Repeat until the reasoning feels automatic.

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Yes — use the session launcher on this page to start a 10-, 20-, 30- or 50-question session drawn entirely from the Secure Infrastructure Design domain.

SDSI · topic practice

Secure Infrastructure Design practice questions

Practise Cisco Designing Cisco Security Infrastructure (SDSI, 300-745, CCNP Security, design-focused) (SDSI) Secure Infrastructure Design practice questions — original exam-style scenarios with answer choices, explanations, and analysis of common mistakes.

Courseiva uses original exam-style practice questions designed for learning and revision. The goal is to understand the concepts, recognise exam patterns, and improve through explanations — not memorise copied exam dumps.

Reviewed byJohnson Ajibi· MSc IT Security

20 questionsDomain: Secure Infrastructure Design

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What the exam tests

What to know about Secure Infrastructure Design

Secure Infrastructure Design questions test whether you can apply the concept in context, not just recognise a definition.

How the topic appears in realistic exam-style scenarios.

Which detail in the question changes the correct answer.

How to eliminate plausible but wrong options.

How to connect the question back to the wider exam objective.

Watch out for

Common Secure Infrastructure Design exam traps

▸Answering from memory before reading the full scenario.
▸Missing a constraint such as cost, availability, security, scope or command context.
▸Choosing a broad answer when the question asks for the most specific fix.
▸Ignoring why the wrong options are tempting.

Practice set

Secure Infrastructure Design questions

20 questions · select your answer, then reveal the explanation

Question 1hardmulti select

Read the full Secure Infrastructure Design explanation →

Which THREE design elements are required for a high-availability firewall pair?

Trap 1: Shared MAC addresses across interfaces.

MAC addresses can be unique or managed by HSRP/failover.

Study all Secure Infrastructure Design common traps →

A
Heartbeat mechanisms.
Heartbeats detect device failure.
B
Separate management IP addresses for each unit.
(Note: Included to reach 3 items) Necessary for individual device monitoring.
C
Shared MAC addresses across interfaces.
Why wrong: MAC addresses can be unique or managed by HSRP/failover.
D
Stateful session synchronization.
Ensures persistent connections during failover.
E
A dedicated failover link.
The link is required for state sync.

Secure Infrastructure Design practice questions

What to know about Secure Infrastructure Design

Common Secure Infrastructure Design exam traps

Secure Infrastructure Design questions

Which THREE design elements are required for a high-availability firewall pair?

Which THREE components of the Cisco Secure stack provide visibility into encrypted traffic?

You are designing a security architecture for a multi-cloud environment using Cisco Secure Firewall. Which feature should be enabled to enforce consistent security policies across AWS and Azure instances using FMC?

Which TWO Cisco technologies are critical for implementing a Zero Trust architecture for the workforce? (Select 2)

You are designing a security architecture for a hybrid cloud environment using Cisco Secure Firewall. Which design pattern effectively mitigates the risk of lateral movement between VPCs in AWS while maintaining centralized policy enforcement?

A company is migrating to a SASE architecture using Cisco+ Secure Connect. Which component is responsible for the unified identity-based access control for remote users?

Which TWO design considerations are essential when implementing a Zero Trust architecture for IoT devices in a campus environment using Cisco ISE and TrustSec?

In a Cisco SD-WAN environment, you need to ensure that branch office traffic destined for SaaS applications is optimized and secured. Which design approach is most appropriate?

A security architect is designing a Cisco Secure Firewall deployment for a multi-cloud environment. Which design strategy ensures consistent security policy enforcement across AWS and Azure instances?

When designing a secure remote access solution for a hybrid workforce, which Cisco AnyConnect feature should be prioritized to reduce the attack surface by verifying the posture of the device before granting access?

Which TWO factors must be considered when designing a Secure Remote Access VPN architecture for a hybrid workforce using Cisco AnyConnect?

A security architect is designing a Cisco Secure Firewall deployment for a multi-cloud environment. Which design approach provides the most consistent security policy enforcement across AWS and Azure?

For a high-availability firewall architecture, which design element is critical when utilizing a routed-mode configuration in a data center?

When selecting a security approach for email threats, which Cisco technology provides automated sandboxing to protect against zero-day phishing?

Which design principle is essential when configuring Cisco Secure Firewall for SaaS application visibility?

A company requires a control plane security design for their campus network. Which feature prevents unauthorized devices from claiming to be the default gateway?

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?

You are designing an IoT security strategy for a manufacturing site. Which approach best isolates unmanaged IoT devices from the enterprise network?

In a multi-cloud design, which component is used to connect remote offices directly to the cloud provider while maintaining Cisco-level security?

Which Cisco solution provides DNS-layer security to prevent users from connecting to malicious domains?

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Exam traps to avoid