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300-410 Practice Question: Which authentication type is the default when BFD…
Which authentication type is the default when BFD authentication is enabled on Cisco IOS-XE?
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
✓
Keyed SHA-1 (auth type 4)
Cisco IOS-XE defaults to keyed SHA-1 (auth type 4) when BFD authentication is configured, as it provides stronger security than MD5.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Simple password (auth type 1)
Why it's wrong here
Simple password is available but not the default; it is less secure.
- ✗
Keyed MD5 (auth type 2)
Why it's wrong here
Keyed MD5 is an option but not the default; SHA-1 is preferred.
- ✗
Meticulous Keyed MD5 (auth type 3)
Why it's wrong here
Meticulous MD5 is available but not the default; SHA-1 is the default.
- ✓
Keyed SHA-1 (auth type 4)
Why this is correct
Cisco IOS-XE defaults to keyed SHA-1 (auth type 4) when BFD authentication is enabled.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 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 300-410 exam.