Every time i see this question... i hate it more.
B is indeed the "least incorrect/bad" option but it's just a ridiculously small part of the whole answer. Meaning this would be the end result WITHOUT spanning tree existing and putting the end of the trunk that was last configured (mismatched) in a "broken status" blocking all untagged traffic on that port.
Call me crazy but i hate questions where i need to envision a parallel reality where spanning tree does not yet exist.
To explain if anyone do not understand his complaint. According to Cisco STP is enabled by default on all cisco switches. Cisco documentation says STP should shut down ports when there is a native vlan mismatch. Although, I have yet to see this happen on Packet Tracer or in Lab equipment.
You would understand if you have configured native vlan mismatch like on GNS3 or EVE-NG. you only receive warnings, but does not shut down any trunk port.
So B is the answer.
Another one of these. I'll keep coming back to the same link whenever I see this native VLAN mismatch.
https://learningnetwork.cisco.com/s/article/effects-of-mismatched-native-vlans-on-a-trunk-link
I guess I'm just going to have to interchangeably use the words restricted, shut down, and broken.
I'm picking C here because of the link, but if it's B that Cisco Exam wants, then I'll pick that for the exam.
C is correct
https://learningnetwork.cisco.com/s/article/effects-of-mismatched-native-vlans-on-a-trunk-link#:~:text=at%20receiving%20switch-,Situation%201,-The%20native%20VLAN
As I understood:
If the Native VLAN is not the same on both ends of the link, a trunk will NOT dynamically form.
If the trunk is formed through trunk mode (as it is here), and there is a native vlan missmatch, than the trunk will be formed but the vlans are merged to a single broadcast domain.
How to Avoid and Fix VLAN Mismatch Errors - LinkedIn
" What are the common causes and solutions of VLAN mismatch errors?
…
VLAN mismatch types
There are two main types of VLAN mismatch errors: native VLAN mismatch and access VLAN mismatch. A native VLAN mismatch occurs when two switches on the same trunk link have different native VLANs configured. A native VLAN is the default VLAN that carries untagged traffic on a trunk link. A native VLAN mismatch can cause traffic to be dropped, misrouted, or broadcasted to unintended devices.
..."
While B is a bit vague, this would be the general result of the native VLAN mismatch
https://www.networkacademy.io/ccna/ethernet/trunk-native-vlan#:~:text=the%20Trunk%20settings%20on%20one%20switchport%20do%20not%20have%20to%20exactly%20match%20the%20settings%20on%20the%20other%20side%20of%20the%20link
https://learningnetwork.cisco.com/s/article/effects-of-mismatched-native-vlans-on-a-trunk-link
upvoted 2 times
...
...
Log in to ExamTopics
Sign in:
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.
Upvoting a comment with a selected answer will also increase the vote count towards that answer by one.
So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.
splashy
Highly Voted 2 years, 4 months agoRougePotatoe
2 years, 2 months agoGhostWolf
2 years, 2 months agossbipa6
Most Recent 2 weeks, 1 day agoxtraMiles
6 months agoallyou
8 months, 2 weeks ago[Removed]
10 months, 1 week ago41a9d4b
11 months, 3 weeks ago[Removed]
1 year, 5 months agoBeautifulSmile
1 year, 8 months agoonikafei
2 years, 11 months agoZUMY
3 years, 8 months agonenotronix
3 years, 10 months ago[Removed]
3 years, 5 months ago