350-701 Content Security Practice Question
Which Cisco cloud-based security solution provides DNS-layer security to block requests to malicious domains?
⚠ Common exam trap
Cisco often tests the distinction between DNS-layer security (Umbrella) and proxy-based security (WSA), so the trap here is that candidates may confuse Cisco WSA's URL filtering with Umbrella's DNS-layer blocking, not realizing that WSA operates at the application layer after the DNS resolution has already occurred.
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
✓
Cisco Umbrella SIG
Cisco Umbrella SIG (Security Internet Gateway) is a cloud-delivered security solution that provides DNS-layer security by intercepting and analyzing DNS queries. When a user attempts to resolve a domain, Umbrella checks the request against its threat intelligence database and blocks the resolution if the domain is known to be malicious, preventing the connection before it is 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.
- ✓
Cisco Umbrella SIG
Why this is correct
Umbrella SIG provides DNS-layer security as a cloud service.
- ✗
Cisco Firepower NGFW
Why it's wrong here
Firepower is a next-generation firewall, not a cloud DNS security solution.
- ✗
Cisco WSA
Why it's wrong here
WSA is a web security appliance, not a cloud DNS service.
- ✗
Cisco ESA
Why it's wrong here
ESA is an email security appliance, not a cloud DNS security solution.
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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.