CLCOR Infrastructure And Design Practice Question
Which THREE of the following items must be verified during a site-to-site VPN check for collaboration traffic?
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
✓
MTU size
MTU sizes (to avoid fragmentation), DSCP tag preservation (to maintain QoS), and UDP port ranges (for RTP media) are critical for successful inter-site communication.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
DHCP relay configuration
Why it's wrong here
DHCP relay is for client IP assignment, not tunnel traffic.
- ✓
MTU size
Why this is correct
Must be sufficient to avoid packet fragmentation.
- ✗
NTP server reachability
Why it's wrong here
NTP is for time, not for site-to-site tunnel data traffic.
- ✓
UDP port range availability
Why this is correct
RTP media travels via UDP and must not be blocked.
- ✓
DSCP tag preservation
Why this is correct
Tags must be preserved through the tunnel to ensure QoS.
About these practice questions
One of 263 original CLCOR practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
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 CLCOR 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 CLCOR exam.