300-745 — Designing Cisco Security Infrastructure (SDSI) Practice Test

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Description

SDSI (300-745) is aimed at security architects who design across Cisco's whole portfolio, and it arrived in 2025 as a CCNP Security concentration. Expect practice questions on designing secure infrastructure and VPNs, risk and incident handling, protecting cloud-native applications, and AI-driven DevSecOps. Familiarity with Secure Firewall, ISE, Duo and Secure Access will help you, and SCOR completes the CCNP.

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300-745Designing Cisco Security Infrastructure (SDSI)
Mapped
Domains Covered
Secure Infrastructure
Applications
Risk, Events, and Requirements
Artificial Intelligence, Automation, and DevSecOps

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Q 50 / 5002:14
Which protocol operates at the transport layer?
A HTTP
B TCP
C ARP
D ICMP
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Correct
Option B is correct — TCP operates at the transport layer
Why?
TCP (Transmission Control Protocol) provides reliable, connection-oriented communication at Layer 4 of the OSI model.

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300-745 Questions

Study from 150 practice questions aligned to the latest 300-745 objectives.

Entry / Support Technician
IT beginners and support staff
Professional
3-5 years experience; core + concentration exam

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Why is TCP connection-oriented?
TCP uses a three-way handshake (SYN, SYN-ACK, ACK) to establish a reliable session before data transfer begins...

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Frequently asked questions

Everything you need to know about prepping for 300-745.

What is the 300-745 exam format?
Official format is typically 55-65 questions, 90 minutes, passing score Variable (Cisco does not publish a fixed passing score)/300-1000.
How much does the 300-745 exam cost?
The official exam fee is $300 USD. Pricing may vary by country, currency, or voucher.
What topics are on the 300-745 exam?
The 300-745 syllabus is organized into 4 domains. (Last updated: 2024)
  • Secure Infrastructure (30%)
  • Risk, Events, and Requirements (30%)
  • Applications (25%)
  • Artificial Intelligence, Automation, and DevSecOps (15%)
How should I prioritize the 300-745 syllabus?
Start with the highest‑weight domains first: Secure Infrastructure, Risk, Events, and Requirements, Applications. Then work down the list and use practice questions to validate each topic.
What are the prerequisites for 300-745?
Recommended experience includes Understanding of network security architecture and design. Use the syllabus domains above to identify any gaps before you schedule the exam.
Is the 300-745 exam active in 2026?
Current status: ACTIVE. Last content update: 2024.
How long is the 300-745 certification valid?
Certification validity is typically 3 years for Cisco Certified Specialist - Designing Cisco Security Infrastructure. Recertification options vary by vendor and program.
When was 300-745 released and when does it retire?
Released: 2025-05-20.
How many 300-745 practice questions are included on ExamJungle?
This 300-745 practice test includes 150 practice questions in the simulator, with explanations and study tools.
Is this the real 300-745 exam?
No, but the questions mirror the format, difficulty, and objectives so you are fully prepared.
How long do I get access?
Access depends on your plan, with ongoing updates to the 300-745 pool.
Can I study on mobile?
Yes, the simulator is optimized for desktop and mobile so you can keep studying anywhere.
Does this include explanations?
Yes, detailed explanations are included for every question.

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