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HP Exam HPE7-A03 Topic 3 Question 24 Discussion

Actual exam question for HP's HPE7-A03 exam
Question #: 24
Topic #: 3
[All HPE7-A03 Questions]

A large multinational financial institution has contracted you to design a new full-stack wired and wireless network for their new 6-story regional office building. The bottom two floors of this facility will be retail space for a large banking branch. The upper floors will be carpeted office space for corporate users, each floor being approximately 100.000 sq ft (9290 sqm). Data centers are all off site and will be out of scope for this project. The customer is underserved by its existing L2-based network infrastructure and would like to take advantage of modern best practices in the new design. The network should be fully resilient and fault-tolerant, with dynamic segmentation at the edge.

The retail space will include public guest Wi-Fi access. Retail associates will have corporate tablets for customer service, and there will be a mix of wired and wireless devices throughout the retail floors. The corporate users will primarily use wireless for connectivity, but several wired clients, printers, and hard VoIP phones will be in use.

The customer is also planning on renovating the corporate office space in order to take advantage of "smart office' technology. These improvements will drive blue-dot wayfinding. presence analytics, and other location-based services

The client decided that they would like to manage two wiring closets as a single stack with a total of 10 switches and a minimum transport speed or 25Gbps over OM4 MM fiber They would also like to keep the stacking cabling cost to a minimum.

Which stacking components would be required to meet the customer's requirements in the most cost-effective way if the closets were 190 m (620 ft) apart? (Select two.)

Show Suggested Answer Hide Answer
Suggested Answer: B, D

To meet the customer's requirement of managing two wiring closets as a single stack with a minimum transport speed of 25Gbps over OM4 MM fiber, especially when the closets are 190m apart, the most cost-effective solution would involve using SFP transceivers. SFP28 transceivers can support speeds up to 25Gbps, aligning with the customer's minimum speed requirement. For higher speeds or future-proofing, SFP56 transceivers, which can support speeds up to 50Gbps, could also be considered. Both types are compatible with OM4 multimode fiber, which is capable of supporting these high speeds over the distance specified. DAC (Direct Attach Cable) solutions like options A and C would not be feasible due to the 190m distance between the closets, as DAC cables are typically used for much shorter distances.


Contribute your Thoughts:

Tasia
5 days ago
I'm not sure, but I'm leaning towards the 25GDAC cables and SFP28 transceivers. It might be a bit slower, but it could be a more budget-friendly option.
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Xochitl
6 days ago
Definitely going with the 50GDAC cables. That's the way to go for a high-speed, long-distance stacking setup. The SFP56 transceivers are the icing on the cake.
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Latonia
11 days ago
I agree with Isadora, but we also need D) SFP28 transceivers for the required transport speed.
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Tequila
14 days ago
I think the answer is a combination of 50GDAC cables and SFP56 transceivers. That seems like the most cost-effective way to meet the 25Gbps requirement over the long distance.
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Stanton
2 days ago
I agree, using a combination of 50GDAC cables and SFP56 transceivers would be the most cost-effective solution for meeting the 25Gbps requirement over that distance.
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Isadora
25 days ago
I think we should go with C) 25GDAC cables for cost-effectiveness.
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