350-701 Cloud Security Practice Question
An organization uses Cisco Umbrella to block malicious domains. What is the primary security benefit of DNS-layer security?
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
✓
It blocks malicious domains before a connection is made
DNS-layer security blocks requests to malicious domains at the DNS level, preventing the connection from being established.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It performs deep packet inspection on all traffic
Why it's wrong here
DNS-layer security only inspects DNS queries, not full packet content.
- ✓
It blocks malicious domains before a connection is made
Why this is correct
DNS-layer security stops connections to malicious domains at the initial DNS request.
- ✗
It provides SSL decryption for all web traffic
Why it's wrong here
SSL decryption is a feature of the Secure Internet Gateway, not DNS-layer.
- ✗
It encrypts all DNS traffic to prevent eavesdropping
Why it's wrong here
DNS-layer security does not inherently encrypt traffic; it blocks based on domain reputation.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-701 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 350-701 exam.