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HP HPE7-A12 Exam Syllabus Topics:

Section	Objectives
Prepare and Present the Solution
Architect the Solution
Determine Customer's Requirements
Analyze Requirements

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HPE Network Data Center Professional Architect Exam Sample Questions (Q52-Q57):

NEW QUESTION # 52
A customer asks whether they should adopt a routed (Layer 3) access design or a bridged (Layer
2) access design for their new data center fabric. Which factor most strongly favors a routed access design?

A. The customer has many legacy applications requiring Layer 2 adjacency across racks
B. The customer wants to minimize the fault domain size and avoid spanning-tree dependency, and applications don't require L2 adjacency beyond the rack
C. The customer wants to run VMware vMotion across the entire data center without any L3 boundary
D. The customer has no requirement for scalability

Answer: B

Explanation:
A routed access design minimizes Layer 2 fault domains and removes dependency on spanning tree, which is ideal when applications don't require broad L2 adjacency. Legacy L2-dependent apps or unrestricted vMotion mobility across the entire DC would instead favor extending L2 (e.g., via VXLAN) further into the fabric.

NEW QUESTION # 53
Which two questions should be asked to properly size the data center fabric's east-west bandwidth requirements? (Choose two.)

A. What is the customer's company founding year?
B. What is the planned server-to-leaf oversubscription ratio?
C. What is the expected server-to-server ("east-west") traffic ratio compared to north-south traffic?
D. How many parking spots are available at the facility?
E. What color are the server chassis?

Answer: B,C

Explanation:
Understanding the east-west to north-south traffic ratio and the intended server-to-leaf oversubscription ratio are both essential inputs for sizing spine and leaf uplink bandwidth correctly. The remaining options are irrelevant to fabric sizing.

NEW QUESTION # 54
A customer's data center has 40 racks and is growing. The customer asks you to recommend a fabric topology that supports predictable latency and easy horizontal scaling. Which topology should you recommend?

A. Ring topology
B. Spine-leaf (Clos) fabric
C. Three-tier core-distribution-access
D. Full-mesh access layer

Answer: B

Explanation:
A spine-leaf (Clos) fabric provides consistent, predictable latency between any two leaf switches (every leaf is equidistant from every other leaf through the spine) and scales horizontally by adding spine or leaf switches without redesigning the fabric. Three-tier designs introduce variable latency and are harder to scale predictably; ring and full-mesh access designs don't fit modern DC scale requirements.

NEW QUESTION # 55
Waratah Hospital, based in Australia, is planning to move many data center services to new facility. (The remaining legacy data center will not be part of this project.) Waratah Hospital hired an external consultant to assist with the new data center network design.
Based on the requirements for the data center network infrastructure, the external consultant has created a high-level design. The below summarizes the content of the design document.
Requirements and information:
- Six racks in the data center room (single row).
- Redundant Top of Rack leaf switches with back-to-front cooling in each rack, providing 10/25 Gbps connectivity to servers, storage, and other devices.
- Four 100 GbE uplinks per leaf switch.
- The customer requested to install all switch ports facing the back of the rack racks (hot aisle.)
- OOB management for servers, storage, and network has to be provided through an external switch with back-to-front cooling. This switch has to be included in the solution. One OOB switch provides connectivity for two racks.
- Core equipment for the OOBM network is being reused.
- Middle-of-row spine switches.
-The data center should connect to the hospital building with links that provide 400 Gbps.
- Internet access is provided through an existing firewall cluster with two firewalls, each firewall in one data room. The second firewall is operating in standby mode, VRRP is utilized on the firewalls for failover. The data center network should connect to these firewalls with links that total
100 Gbps.
- The external link is a dark fiber direct link based on single-mode fiber (OS2). The distance to the main hospital 1.5 KM. The links will terminate on two core switches in the hospital.
The customer also requires:
- 99.999% uptime for this life-critical environment.
- Planned and unplanned downtime has to be minimized.
- Software upgrades are only allowed once per year with close to zero downtime.
- All life-critical resources are accessed locally, and all resources exist within the hospital campus.
- Waratah Hospital requires a highly secure environment for the data center. Encrypted wire speed connectivity between the data room and the hospital is a must-have because the link between the buildings crosses a public road.
- Waratah Hospital has a mix of virtualized (vSphere) servers. Nutanix storage, bare metal servers, backup servers and other devices.
In the past, the hospital has had a security breach that resulted in data loss, network downtime, and identity theft.
Refer to the scenario. You have learned that the customer needs to extend two VRFs between the new data center facility and the hospital. To meet with the requirements of the scenario and general best practices, what should you recommend for connecting border leaf switches to the hospital core?

A. 8x 50Gbps links that establish two full meshes between two border leaf switches and two hospital core switches. The 4 links that connect to the hospital core 1 in one VSX LAG, and the other 4 links are in another VSX LAG.
B. 4x 100 Gbps links, establishing a full mesh between two border leaf switches and two hospital core switches. Each link should have two subinterfaces acting as routed only ports.
C. 8x 50Gbps links that are all routed only ports (ROPs). These ports establish two full meshes between two border leaf switches and two hospital core switches.
D. 4x 100 Gbps links that are routed only ports. Border leaf switch 1 has two ports that connect to hospital core switch 1. Border leaf switch 2 has two ports that connect to hospital core switch 2.

Answer: B

Explanation:
This provides 400Gbps total, full-mesh resiliency, and separate routed connectivity for the two VRFs.

NEW QUESTION # 56
Which statement is true about VSX design?

A. VSX Inter-Switch Link can implemented over indirect links.
B. VSX Inter-Switch Link must be implemented using direct links between peers.
C. VSX peer keepalive can be implemented over a VSX LAG.
D. VSX peer keepalive links only supports 40G and 100G ports.

Answer: B

Explanation:
The VSX ISL is the dedicated synchronization/data link between the two VSX peers and must be directly connected. The keepalive should use a separate path, often OOBM or routed connectivity.

NEW QUESTION # 57
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