HPE7-A12 Sample Questions & Answers
Creating a preliminary solution and choosing network segments and protocols carries the biggest weight, alongside identifying stakeholders and their objectives, translating requirements into a technical design, and presenting something that's been reviewed and revised.
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- Question 1IntermediateSelect 2
Determine customer's requirements · Collect information
To accurately size the uplink capacity and buffers for a new data center design, an architect needs to establish a baseline of the current east-west versus north-south traffic ratios. Which TWO telemetry or data collection methods are most appropriate to gather this specific traffic pattern data? (Select TWO)
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Correct answers: D, E
sFlow and IPFIX (NetFlow) provide granular visibility into traffic flows, including source/destination IP addresses, ports, and protocols. This deep flow-level visibility is required to determine whether traffic is moving laterally (east-west) between servers or exiting the data center (north-south). SNMP only provides aggregate interface statistics, which cannot distinguish traffic directionality at a flow level.
IPFIX (NetFlow) and sFlow provide granular visibility into traffic flows, including source/destination IP addresses, ports, and protocols. This deep flow-level visibility is required to determine whether traffic is moving laterally (east-west) between servers or exiting the data center (north-south). Syslog is used for event logging, not traffic pattern analysis.
- Question 2Beginner
Determine customer's requirements · Identify stakeholders and sponsors
During the discovery phase, an architect is conducting a workshop with the customer's IT leadership. The Director of Infrastructure outlines the technical challenges, while the VP of Finance emphasizes the strict capital expenditure limits. In the context of stakeholder identification, what is the primary role of the VP of Finance in this project?
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Correct answer: B
The VP of Finance represents the Financial Decision Maker (FDM). This role is responsible for setting budget constraints, approving capital expenditures (CapEx) or operational expenditures (OpEx), and ensuring the project aligns with the company's financial goals. The Director of Infrastructure is more likely the Technical Decision Maker (TDM).
- Question 3Advanced
Determine customer's requirements · Identify current environment
A multi-site healthcare provider is planning to deploy an Active-Active data center architecture to support a new electronic health records (EHR) system.
The current brownfield environment consists of two data centers connected via a 10Gbps dedicated wavelength service, operating at 85% utilization during peak hours. The current storage replication happens asynchronously over this link. The new requirement mandates synchronous replication for the EHR database, which requires a maximum round-trip time (RTT) of 2 milliseconds and an estimated 15Gbps of dedicated throughput.
Which of the following represents the MOST critical finding the architect should document during the current environment identification phase?
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Correct answer: A
In a brownfield discovery for an Active-Active data center using synchronous replication, both bandwidth and latency are hard physical constraints. The current 10Gbps link is already at 85% utilization and cannot support the new 15Gbps requirement. Furthermore, synchronous replication is strictly bound by latency (2ms RTT). Therefore, documenting the need for a higher-capacity link (e.g., 40G/100G) and verifying the fiber distance/latency is the most critical finding for the design to succeed.
- Question 4Beginner
Determine customer's requirements · Communicate to Understand the objectives
True or False: Eliciting business objectives from executive stakeholders should typically occur after completing the physical site survey and analyzing the brownfield network configurations.
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Correct answer: B
False. In any standard architecture methodology, eliciting and understanding the business objectives must be the very first step. Business goals drive the technical requirements, which in turn dictate what information needs to be gathered during the physical site survey and brownfield analysis. Reversing this order leads to misaligned designs.
- Question 5Intermediate
Analyze requirements · Determine the possible high-level solutions
An enterprise is experiencing significant performance degradation in their traditional three-tier data center network. Traffic analysis reveals that 80% of the traffic flows between servers in different racks (east-west), causing bottlenecks at the core layer. Which high-level solution should the architect propose to address this specific constraint?
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Correct answer: C
A spine-leaf topology is explicitly designed to optimize east-west traffic. Every leaf switch connects to every spine switch, ensuring that traffic between any two servers is always exactly two hops away (Leaf -> Spine -> Leaf). This eliminates the core bottlenecks found in traditional three-tier designs when dealing with heavy server-to-server communication.
- Question 6Advanced
Analyze requirements · Analyzing requirements and constraints
A research organization is deploying a massive AI/ML GPU cluster. The workloads rely on RDMA over Converged Ethernet (RoCEv2) for inter-node communication. The architect must ensure the network fabric design accommodates the strict constraints of RoCEv2. Which combination of technologies is absolutely critical to map to these requirements?
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Correct answer: C
RoCEv2 requires a lossless Ethernet fabric to function efficiently, as packet loss drastically degrades AI/ML workload performance (due to go-back-N retransmissions). Priority Flow Control (PFC) provides hop-by-hop flow control to prevent buffer drops, while Explicit Congestion Notification (ECN) provides end-to-end congestion signaling to slow down senders before queues fill up. Together, they form the foundation of a lossless AI network.
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