350-701 Security Concepts Practice Question
A security engineer is configuring a Cisco Firepower NGFW to detect and block a new malware variant that communicates with a command-and-control server using encrypted DNS queries. Which Cisco security product is best suited to provide visibility into this malicious DNS traffic?
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
Cisco Umbrella is a cloud-delivered DNS security service that can block malicious domains and provide visibility into DNS queries.
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
Why this is correct
Umbrella provides DNS-layer security to block malicious domains.
- ✗
Cisco ASA
Why it's wrong here
ASA is a stateful firewall, not specialized in DNS analysis.
- ✗
Cisco AMP
Why it's wrong here
AMP is endpoint protection, not DNS-level security.
- ✗
Cisco Stealthwatch
Why it's wrong here
Cisco Stealthwatch uses NetFlow and IPFIX metadata to analyse network behaviour and detect anomalies, but it cannot decrypt or inspect the content of encrypted DNS-over-HTTPS or DNS-over-TLS traffic. The scenario requires visibility into the payload of encrypted DNS queries, which demands a proxy-based decryption capability such as that provided by Cisco Umbrella. Stealthwatch is tempting because it excels at spotting lateral movement and beaconing patterns via flow telemetry, and would be the correct choice if the malware used unencrypted DNS or relied on IP-based command-and-control communication.
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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.