The answer is the Cisco ESA default attachment size limit of 10 MB. Even though the mail flow policy is configured for a maximum message size of 20 MB, the ESA enforces a separate, built-in default cap on individual attachments, which overrides the larger policy setting. This is a common trap on the Cisco SCOR / CCNP Security Core 350-701 exam, testing your understanding that the ESA has two distinct limits: the mail flow policy’s total message size and the system’s default attachment size. Many candidates mistakenly assume the mail flow policy alone controls all size restrictions, but the attachment limit must be explicitly raised in the policy or system settings. For the exam, remember: the mail flow policy governs the whole message envelope, while the attachment size limit governs the payload inside. A quick memory tip: think of the ESA as having a “10 MB brick wall” for attachments that stands independently from the “20 MB gate” for the total message.
350-701 Content Security Practice Question
This 350-701 practice question tests your understanding of content security. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 network administrator is troubleshooting an issue where users cannot send emails with attachments larger than 10 MB through the Cisco Email Security Appliance (ESA). The ESA is configured with a mail flow policy that has a maximum message size of 20 MB. What is the most likely cause of the issue?
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 ESA default maximum attachment size is 10 MB.
The Cisco ESA has a built-in default maximum attachment size of 10 MB, which is separate from the mail flow policy's maximum message size. Even though the mail flow policy allows messages up to 20 MB, the attachment size limit is enforced by the ESA's default configuration, which caps individual attachments at 10 MB. This default can be overridden in the mail flow policy or system settings, but if not explicitly changed, it remains the limiting factor.
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 mail flow policy maximum message size is set too low.
Why it's wrong here
The mail flow policy maximum message size is 20 MB, so it is not too low.
✗
The HAT (Host Access Table) maximum message size is set to 10 MB.
Why it's wrong here
The HAT maximum message size is 20 MB as given.
✗
The outgoing mail policy has a smaller attachment size limit.
Why it's wrong here
Outgoing mail policies do not have a separate attachment size limit.
✓
The ESA default maximum attachment size is 10 MB.
Why this is correct
The default maximum attachment size in ESA is 10 MB, which restricts attachments even if the overall message size is larger.
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
The trap here is that candidates confuse the mail flow policy's maximum message size with the attachment size limit, assuming that increasing the message size automatically allows larger attachments, when in fact they are independently configured.
Detailed technical explanation
How to think about this question
The ESA uses a two-tier size enforcement: the 'maximum message size' in the mail flow policy applies to the entire email (headers + body + attachments), while the 'maximum attachment size' is a separate parameter that can be set per policy or left at the default of 10 MB. In real-world scenarios, administrators often increase the message size but forget to adjust the attachment size limit, leading to this exact issue. The default attachment size limit is defined in the 'System Administration' settings under 'Default Message Size Limits'.
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 ESA default maximum attachment size is 10 MB. — The Cisco ESA has a built-in default maximum attachment size of 10 MB, which is separate from the mail flow policy's maximum message size. Even though the mail flow policy allows messages up to 20 MB, the attachment size limit is enforced by the ESA's default configuration, which caps individual attachments at 10 MB. This default can be overridden in the mail flow policy or system settings, but if not explicitly changed, it remains the limiting factor.
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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