300-710 SNCF Management And Troubleshooting Practice Question
An FMC administrator is troubleshooting a scenario where device registration between an FTD and FMC fails immediately with a registration key mismatch error. The administrator verified the NAT ID and registration key. What underlying protocol handshake fails during this registration process, and how can it be debugged?
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
✓
The sftunnel (TCP 8305) handshake fails; debug using 'sftunnel status' and examining /var/log/sftunnel.log.
Registration between FMC and FTD relies on sftunnel (TCP port 8305). Troubleshooting involves checking sftunnel status and certificates using CLI tools on both FMC and FTD.
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 sftunnel (TCP 8305) handshake fails; debug using 'sftunnel status' and examining /var/log/sftunnel.log.
Why this is correct
Registration uses sftunnel over TCP 8305. Checking sftunnel logs and status on both ends reveals certificate or key mismatches.
- ✗
The HTTPS REST API (TCP 443) handshake fails; debug using 'debug rest-api'.
Why it's wrong here
FMC-to-FTD registration does not use the REST API.
- ✗
The SNMP trap receiver fails; debug using 'system support snmp-debug'.
Why it's wrong here
SNMP is not used for device registration.
- ✗
The SSH tunnel (TCP 22) fails; debug using 'tail -f /var/log/secure'.
Why it's wrong here
SSH is not used for the core management registration tunnel.
Visual reference
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Cisco exam blueprint
This 300-710 SNCF 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 300-710 SNCF exam.