Exam 300-420 topic 1 question 167 discussion

Actual exam question from Cisco's 300-420

Question #: 167
Topic #: 1

Refer to the exhibit. An engineer is designing a Layer 2 campus network. The design must support fast convergence and leverage as much bandwidth as possible between layers. Distribution switches do support VSS; unfortunately, not all routing protocols are available for use due to license limitations. Which solution must the engineer choose?

A. EtherChannel
B. MEC
C. RSTP
D. ECMP

Show Suggested Answer

Suggested Answer: B 🗳️

by beuzec at Oct. 20, 2022, 3:01 p.m.

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mgiuseppe86

9 months ago

Selected Answer: B

Multi-Chassis EtherChannel. With inter-chassis SSO, the total switchover time is within a second and when a chassis fails or during a switchover event, all the links on that chassis go down. External switches that are single-homed into the failed chassis experience an outage. It is recommended to dual-home all connections to the SV pair using MEC technology, which primarily load-balances traffic across links, and keeps the traffic impact minimal in the event of chassis or link failure.

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vangio

11 months, 1 week ago

Correct B

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J2J2J2J

1 year ago

Selected Answer: B

MEC (Multi Chassis Etherchannel)

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andrewChan

1 year, 8 months ago

Selected Answer: B

configure StackWise Virtual on distribution layer and then configure MEC https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-9000/nb-06-cat-9k-stack-wp-cte-en.html

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beuzec

1 year, 8 months ago

For me the answer is A: Etherchannel

upvoted 1 times

Sickcnt

1 year, 8 months ago

Could be but theres a reason they wrote "Distribution switches do support VSS" So it means we should be doing MEC (Multi Chassis Etherchannel) Answer B is 100% correct.

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