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HPE7-A01 Exam - Topic 10 Question 33 Discussion

Actual exam question for HP's HPE7-A01 exam
Question #: 33
Topic #: 10
[All HPE7-A01 Questions]

For the Aruba CX 6400 switch, what does virtual output queueing (VOQ) implement that is different from most typical campus switches?

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Suggested Answer: A

The Aruba CX 6400 switch is a modular switch that supports high-performance and high-density Ethernet switching for campus and data center networks. One of the features that distinguishes the Aruba CX 6400 switch from most typical campus switches is virtual output queueing (VOQ).VOQ is a technique that implements large ingress packet buffers on each port to prevent head-of-line blocking and packet loss due to congestion2.VOQ allows each port to have multiple queues for different output ports and prioritize packets based on their destination and QoS class2.VOQ enables the Aruba CX 6400 switch to achieve high throughput and low latency for various traffic types and scenarios. Reference:2https://www.arubanetworks.com/assets/ds/DS_CX6400Series.pdf


by Marylin at Nov 13, 2024, 05:17 AM

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Patti
3 months ago
Definitely per port ASICs make a difference too!
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Gearldine
3 months ago
Surprised to see VOQ implemented like this!
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Sheridan
3 months ago
I thought typical switches had egress buffers instead?
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Millie
4 months ago
Totally agree, it's a game changer for performance!
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Alecia
4 months ago
VOQ uses large ingress packet buffers, right?
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Felicitas
4 months ago
I feel like VSX was a separate topic, so I don't think that's the right answer for VOQ.
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Naomi
4 months ago
I practiced a question on buffer sizes before, but I can't recall if VOQ specifically mentioned large buffers.
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Francis
4 months ago
I think VOQ is more about managing how packets are queued per port, which might tie into the ASICs.
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Merrilee
5 months ago
I remember something about VOQ helping with congestion, but I'm not sure if it relates to ingress or egress buffers.
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Sheron
5 months ago
Okay, I've got this. VOQ is different from typical campus switches because it uses per-port ASICs to manage the packet buffers. That's the key distinction.
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Maryann
5 months ago
I remember learning about VOQ in class. I think it has to do with how the switch handles packet buffering, but I can't recall the specifics.
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Frankie
5 months ago
Hmm, virtual output queueing is a new concept for me. I'll have to review my notes on that.
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Leonie
5 months ago
I'm not sure about this one. I'll need to think it through carefully.
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Meghann
1 year ago
Personally, I'm leaning towards A. Large ingress buffers can absorb traffic bursts and smooth out the flow to the egress ports.
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Shayne
1 year ago
I agree, large ingress buffers can definitely help with smoothing out traffic flow.
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Graciela
1 year ago
I think A makes sense, it helps with traffic bursts.
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Taryn
1 year ago
I'm not sure, but I think it might be C) per port ASICs.
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Veda
1 year ago
I agree with Emerson, VOQ in Aruba CX 6400 switch uses large ingress packet buffers.
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Margart
1 year ago
Hold up, is this a trick question? Virtual output queueing sounds like something from the future, not a typical campus switch!
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Penney
1 year ago
Hmm, I'm going with D. VSX is a feature that allows two switches to act as one, so it could be related to virtual output queueing.
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Precious
1 year ago
I agree with you, D) VSX sounds like it could be related to virtual output queueing.
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Aleta
1 year ago
I'm leaning towards C) per port ASICs.
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Maybelle
1 year ago
I think A) large ingress packet buffers is the correct answer.
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Florinda
1 year ago
I think it's got to be C. Per port ASICs help scale the switch and handle more concurrent traffic flows.
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Matthew
1 year ago
D) VSX
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Burma
1 year ago
C) per port ASICs
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Eura
1 year ago
B) large egress packet buffers
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Daren
1 year ago
A) large ingress packet buffers
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Emerson
1 year ago
I think the answer is A) large ingress packet buffers.
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Geraldine
1 year ago
Option B sounds right. Large egress buffers help handle congestion and avoid packet drops.
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Ariel
1 year ago
C) per port ASICs
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Louvenia
1 year ago
Option B sounds right. Large egress buffers help handle congestion and avoid packet drops.
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Cassie
1 year ago
B) large egress packet buffers
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Latanya
1 year ago
A) large ingress packet buffers
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