Discuss Cisco 300-640 Exam Topic 4 Question 1

Cisco 300-640 Exam - Topic 4 Question 1 Discussion

Posted by Elenore on Sep 30, 2026 at 06:44 AM

When considering a rail-only network design, when would adding spine switches make sense?

Awhen providing greater overall total bandwidth within a single scalable unit

Bwhen needing a greater path redundancy within a single scalable unit

Cwhen scaling out to support traffic between multiple scalable units

Dwhen increasing the overall available buffers that spines provide

Suggested Answer: C

5 comments · newest first

Francesco 5 days ago

Definitely A, more bandwidth is always a plus!

Joanne 10 days ago

Buffers are important, but I don't think that's the primary reason for adding spine switches. I might skip option D.

Adaline 15 days ago

I feel like scaling out and supporting traffic between units is a big part of spine switch design, so I might go with option C.

Wenona 20 days ago

I remember discussing redundancy in class, so option B sounds familiar, but I can't recall if that's the main reason for adding spine switches.

Evelynn 26 days ago

I think spine switches are mainly about increasing bandwidth, so I might lean towards option A, but I'm not entirely sure.

Thread summary

● Consensus

Community pick: Yes strong agreement

Vote breakdown

A 2%

B 1%

C 99%

D 3%

Summary updated from 5 comments · last activity 5 days ago

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