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HP HPE7-A12 Exam Syllabus Topics:

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

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HPE Network Data Center Professional Architect Exam Sample Questions (Q13-Q18):

NEW QUESTION # 13
You are modernizing a customer's legacy three-tier architecture with an L3 spine and leaf topology. The CX switches in the topology will provide the overlay. The customer data center uses six VRFs. The customer has asked for service leaf switches to connect to two clustered firewalls, which route and filter traffic between the VRFs. How can you maximize the efficiency of the traffic flow between subnets in the same VRF?

A. Use the centralized gateway model for these subnets, selecting a different centralized gateway for each VRF
B. Use the distributed gateway (L3 anycast) model for these subnets
C. Use the firewall duster as centralized gateways for these subnets
D. Within each VRF, use the distributed gateway (L3 anycast) model for most subnets but the centralized gateway design for the subnets with the highest security needs

Answer: B

Explanation:
For traffic between subnets in the same VRF, distributed L3 anycast gateways allow routing directly at the leaf switches, avoiding inefficient hairpinning through centralized firewalls. The firewalls should be used for routed/filtering traffic between VRFs.

NEW QUESTION # 14
A customer has deployed CX 10000 switches. Fabric Composer, and Pensando Policy and Services Manager (PSM). The switches are discovered in PSM but no VRFs or networks are added. Now the customer wants to get started by applying micro-segmentation to one network.
The customer tells you that they plan to add a policy with rules for permitting desired traffic from endpoints in this network. They will apply it as an egress policy to the network. At this point they will not add any other networks to PSM or apply policies to them. What warning should you give the customer about this plan?

A. The customer should apply the egress policy at both the VRF and network level to ensure that it works properly.
B. When you apply a policy to one network, it is recommended to add all the networks in its VRF to PSM.
C. An ingress policy not egress policy, is the correct direction for controlling traffic from endpoints.
D. The customer must enable strict firewall mode before applying policies to ensure they take effect.

Answer: B

Explanation:
For CX 10000/PSM policy enforcement, networks in the same VRF should be consistently represented in PSM. Adding only one network can lead to incomplete policy context and unexpected segmentation behavior.

NEW QUESTION # 15
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 rack requirements in the scenario. Which additional information can help you choose between CX 8325-48Y8C and CX 8360-48Y6C models?

A. Whether the customer requires the flexibility to extend VM networks across a routed underlay.
B. Whether the customer has a preference for AOC versus DAC cables.
C. Precisely how many ports use 10 GbE versus 25 GbE and whether that mix might change.
D. How the rack and switches installed in it are oriented toward hot and cold aisles.

Answer: C

Explanation:
The scenario gives 10/25GbE requirements, but the exact current and future port-speed mix helps validate the best ToR model.

NEW QUESTION # 16
A customer's network team is hesitant to adopt Fabric Composer because they are comfortable with CLI-based management. What is an effective way to address this concern in the design proposal?

A. Tell the customer CLI access will be permanently disabled
B. Ignore their concern and mandate the change unilaterally
C. Remove Fabric Composer from the proposal entirely without discussion
D. Propose a phased adoption plan, including training, and highlight that Fabric Composer still allows CLI access for troubleshooting while providing intent-based automation for day-to-day operations

Answer: D

Explanation:
Addressing organizational change resistance requires a phased plan with training, and reassurance that CLI access remains available for troubleshooting even as Fabric Composer provides intent-based automation for routine operations - balancing new capability with familiar workflows.

NEW QUESTION # 17
You are designing a network upgrade for a data center that is virtualized with VMware. The customer already uses NSX. You are handling the CX switch design, while the customer is handling the NSX design. What is one question to discuss for the logical design?

A. How to correlate isolated VLAN IDs with primary VLAN IDs and whether to permit any traffic between isolated VLAN endpoints.
B. Into how many VRFs would the customer needs to segment the overlay networks.
C. What routing is required between subnets inside and outside the overlay.
D. Whether the customer has a particular scheme they prefer for mapping VLANs to VNIs.

Answer: C

Explanation:
With NSX, the customer owns the overlay design, but the CX network design must account for how overlay networks connect to external/physical networks, including routing boundaries and route exchange.

NEW QUESTION # 18
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