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200-201 Practice Question: Is designing a segmented network to protect a…

A network engineer is designing a segmented network to protect a sensitive database. The database must be accessible only from a specific application server. Which security concept best describes this design?

⚠ Common exam trap

Cisco often tests least privilege by framing it as a network segmentation or access control question, and the trap here is confusing it with defense in depth because both involve multiple layers, but least privilege specifically focuses on granting only the necessary permissions rather than layering controls.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

Least privilege

Least privilege, is correct because the design restricts access to the sensitive database to only the specific application server that requires it. This principle dictates that users, processes, or systems should be granted the minimum permissions necessary to perform their functions, thereby reducing the attack surface. By implementing network access control lists (ACLs) or firewall rules that permit traffic solely from the application server's IP address to the database port, the engineer enforces least privilege at the network layer.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Defense in depth

    Why it's wrong here

    Defense in depth involves multiple layers of security, not just restricting access to one server.

  • Separation of duties

    Why it's wrong here

    Separation of duties is about dividing responsibilities among different people to prevent fraud.

  • Weakest link

    Why it's wrong here

    Weakest link refers to the most vulnerable component in a system.

  • Least privilege

    Why this is correct

    Least privilege ensures that entities have only the access necessary to perform their functions.

Visual reference

Source Router + ACL permit 10.0.0.0/8 deny any Server 10.0.0.5 ✓ 192.168.1.1 ✗ dropped ACLs evaluate top-down; first match wins — implicit deny all at end

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This 200-201 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-201 exam.