Exam 300-420 topic 1 question 224 discussion

Actual exam question from Cisco's 300-420

Question #: 224
Topic #: 1

Refer to the exhibit. An engineer working for a telecommunication company with an employee ID: 1234:56:789 is calculating STP scalability for switches to ensure that the numbers are below the maximum supported value for STP logical ports. How many logical interfaces are active for switch A?

A. 307
B. 4
C. 202
D. 100

Show Suggested Answer

Suggested Answer: C 🗳️

by benny100 at May 11, 2023, 11:23 p.m.

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CKL_SG

Highly Voted 1 year, 1 month ago

Selected Answer: C

Calculating the Active Logical Ports When designing a large data center using extended Layer 2 VLAN topologies, it is necessary to calculate the spanning tree logical and virtual ports in advance to ensure that spanning tree operates with optimal convergence and stability characteristics. trunks on the switch * active VLANs on trunks + number of non-trunking interfaces on the switch 2 Trunks * 100 Vlans + 2 = 202 Active Logical Interfaces

upvoted 6 times

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luenorz

Most Recent 11 months, 3 weeks ago

Selected Answer: C

c is the answer

upvoted 4 times

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STB247

11 months, 4 weeks ago

Selected Answer: C

Why is the correct answer displayed as D? This is NOT the correct answer. Follow the link provided by benny100 and refer to figure 5.3 and there you will see explained it's the total active VLANs on the trunks, not just the VLANs on the switch. The correct answer is 202 = C.

upvoted 3 times

mgiuseppe86

9 months, 2 weeks ago

Because people dont know how to do math and they are writing a CCNP ENSLD Exam. Wrap your head around that. This world is full of frauds

upvoted 1 times

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benny100

1 year, 2 months ago

https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Data_Center/DC_Infra2_5/DCInfra_5.html In this scenario : 2 trunks * 100 vlans + 2 = 202 C looks to be the correct answer

upvoted 4 times

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