Exam 300-115 topic 1 question 90 discussion

Actual exam question from Cisco's 300-115

Question #: 90
Topic #: 1

[All 300-115 Questions]

Refer to the exhibit.

Why would the switch be considered as a root bridge?

A. The bridge priority is 1 and all ports are forwarding.
B. The switch priority for VLAN 1 and the macro specifies "This Bridge is the root".
C. The bridge priority is 128.19 and all ports are forwarding.
D. The switch priority value is zero, it has the lowest priority value for VLAN 1.

Show Suggested Answer

Suggested Answer: D 🗳️
For priority, the range is 0 to 61440 in increments of 4096; the default is 32768. The lower the number, the more likely the switch will be chosen as the root switch.
Reference: http://www.cisco.com/en/US/docs/switches/lan/catalyst2950/software/release/12.1_9_ea1/configuration/guide/swstp.html#wp1020666

by KQ at Aug. 5, 2019, 2:24 p.m.

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KQ

5 years, 10 months ago

Should be 3 answers for this question i think, A,B and D

upvoted 2 times

Burlin

5 years, 10 months ago

if you read the wording in the question its not a case of is it the root but why it would be "considered the route" also dont forget the priority is not atually 1 that is the system ID that is used in this case for for per-vlan STP, the configured Priority is 0.

upvoted 3 times

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