The answer is that the application uses a hardcoded IP address or a non-DNS protocol, which bypasses Cisco Umbrella’s DNS-layer enforcement entirely. Cisco Umbrella operates by intercepting DNS queries to block access to malicious domains, but if an application connects directly to an IP address without performing a DNS resolution—or uses a protocol that does not rely on DNS—the traffic never triggers a query for Umbrella to inspect. This is a classic Cisco Umbrella hardcoded IP bypass scenario, frequently tested on the Cisco SCOR / CCNP Security Core 350-701 exam to assess your understanding of DNS-layer security limitations. A common trap is assuming the roaming client blocks all traffic, when in reality it only filters DNS requests. Remember the key limitation: Umbrella sees the domain, not the IP. For the exam, keep the memory tip “DNS only, IP free” to recall that hardcoded IPs or non-DNS protocols slip past Umbrella’s defenses.
350-701 Content Security Practice Question
This 350-701 practice question tests your understanding of content security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company wants to use Cisco Umbrella to block access to malicious domains. They have deployed the Umbrella roaming client on all endpoints. However, traffic from a specific application is still reaching a known malicious domain. What is the most likely reason?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The application uses a hardcoded IP address or non-DNS protocol.
Cisco Umbrella operates at the DNS layer, meaning it can only block domains that are resolved via DNS queries. If an application uses a hardcoded IP address or communicates using a non-DNS protocol (e.g., direct IP connections or protocols like HTTP/HTTPS without DNS resolution), the traffic bypasses Umbrella's DNS-based enforcement entirely. This is why the malicious domain is still reachable despite the roaming client being deployed.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The Umbrella policy is configured to allow that specific application.
Why it's wrong here
Policies are based on domains, not applications.
✗
The domain is not categorized as malicious in Umbrella's database.
Why it's wrong here
If it's known malicious, it should be in the database.
✗
The Umbrella roaming client is not installed on the server.
Why it's wrong here
The question says 'all endpoints' including the server.
✓
The application uses a hardcoded IP address or non-DNS protocol.
Why this is correct
Umbrella blocks at the DNS layer; if the application does not use DNS, the block does not apply.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that Umbrella blocks all traffic regardless of how the destination is resolved, when in fact it only blocks based on DNS queries, not direct IP connections or non-DNS protocols.
Detailed technical explanation
How to think about this question
Umbrella's roaming client intercepts DNS queries on the endpoint and forwards them to the Umbrella cloud for policy enforcement. However, applications that bypass the operating system's DNS resolver—by using hardcoded IP addresses, direct socket connections, or protocols like QUIC that avoid DNS—will not trigger a DNS query, thus evading Umbrella's inspection. In real-world scenarios, malware often uses hardcoded IPs or domain fronting to evade DNS-based security controls.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 350-701 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Content Security — This question tests Content Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The application uses a hardcoded IP address or non-DNS protocol. — Cisco Umbrella operates at the DNS layer, meaning it can only block domains that are resolved via DNS queries. If an application uses a hardcoded IP address or communicates using a non-DNS protocol (e.g., direct IP connections or protocols like HTTP/HTTPS without DNS resolution), the traffic bypasses Umbrella's DNS-based enforcement entirely. This is why the malicious domain is still reachable despite the roaming client being deployed.
What should I do if I get this 350-701 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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