easyMultiple Choice
300-410 Practice Question: According to RFC 5424, which syslog severity…
According to RFC 5424, which syslog severity level corresponds to 'Critical' conditions?
⚠ Common exam trap
300-410 often tests the inverted numeric scale of syslog severities, causing candidates to assume higher numbers mean higher severity and to confuse Critical (2) with Alert (1) or Error (3).
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
✓
Severity 2
RFC 5424 defines eight syslog severity levels numbered 0 through 7. Severity 2 is explicitly named 'Critical', indicating critical conditions such as hard device errors. This sits between Emergency (0) and Alert (1) on the more severe end, and Error (3) on the less severe end.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Severity 0
Why it's wrong here
Severity 0 is Emergency, not Critical, so it fails the RFC 5424 mapping the question asks for. It tempts because both sit at the top of the severity scale and both describe severe failures; Emergency is reserved for a system that has become unusable and requires immediate attention.
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Severity 1
Why it's wrong here
Severity 1 is Alert, denoting conditions requiring immediate action, one step below Critical. Tempting because alerting sounds urgent and adjacent to critical, but RFC 5424 assigns Critical to severity 2, so severity 1 names a different condition.
- ✓
Severity 2
Why this is correct
RFC 5424 numbers severities from 0 (Emergency) to 7 (Debug). Critical sits at severity 2, between Alert (1) and Error (3). This ordering is fixed by the standard, so any syslog implementation must map Critical conditions to the numeric value 2.
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Severity 3
Why it's wrong here
Severity 3 is 'Error', not 'Critical'. RFC 5424 numbers Critical as severity 2, sitting between Alert (1) and Error (3). Severity 3 is tempting because it sounds severe, and it does flag serious failures, but it denotes non-critical error conditions rather than the critical level the question asks for.
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Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Cisco exam blueprint
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