exam questions

Exam 200-105 All Questions

View all questions & answers for the 200-105 exam

Exam 200-105 topic 1 question 397 discussion

Actual exam question from Cisco's 200-105
Question #: 397
Topic #: 1
[All 200-105 Questions]

If primary and secondary root switches with priority 16384 both experience catastrophic losses, which tertiary switch can take over?

  • A. a switch with priority 20480
  • B. a switch with priority 8192
  • C. a switch with priority 4096
  • D. a switch with priority 12288
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
In my opinion the switch with the lowest priority becomes the Root so B seems the correct answer but the consensus is on ANSWER A. Can anyone explain this please. The answer is A because the other priorities are lower than root 16384. STP chooses priority first before mac address, so there can't be any switches with lower priority than the primary or secondary root switches.
Otherwise they would have been the root to begin with.

Comments

Chosen Answer:
This is a voting comment (?). It is better to Upvote an existing comment if you don't have anything to add.
Switch to a voting comment New
Quan
Highly Voted 5 years, 6 months ago
The correct answer is A because the primary switch and secondary switch have priority 16384, so because STP election chooses the lower Root ID, the number of tertiary switch should be greater than 16384. In this case the option is A. If a switch HAD the bridge priority of 8192, it WOULD be the primary switch instead tertiary one. In other words, the CURRENT primary and secondary switches have the priority of 16384, and NO switch has the priority lower than 16384. Therefore, the tertiary switch has the priority of 20480.
upvoted 6 times
...
immz
Most Recent 5 years, 4 months ago
Answer is B
upvoted 1 times
icdaniel
5 years, 3 months ago
If there is another Switch with priority value 8192 it would be the Root instead the actual Primary and Secondary ones. So B is not correct.
upvoted 1 times
...
...
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.

SaveCancel
Loading ...