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| Section | Objectives |
|---|---|
| Topic 1: Prepare and Present the Solution | |
| Topic 2: Analyze Requirements | |
| Topic 3: Architect the Solution | |
| Topic 4: Determine Customer's Requirements |
In this Desktop-based HP HPE7-A12 practice exam software, you will enjoy the opportunity to self-exam your preparation. The chance to customize the HP HPE7-A12 practice exams according to the time and types of HPE Network Data Center Professional Architect Exam (HPE7-A12) practice test questions will contribute to your ease. This format operates only on Windows-based devices. But what is helpful is that it functions without an active internet connection. It copies the exact pattern and style of the real HPE Network Data Center Professional Architect Exam (HPE7-A12) exam to make your preparation productive and relevant.
NEW QUESTION # 67
Waratah Hospital, located in Australia, plans to relocate many data-center services to a new facility. (The remaining legacy data center is not included in this project.) Waratah Hospital has engaged an external consultant to help design the new data-center network.
Based on the data-center network-infrastructure requirements, the external consultant has produced a high- level design. The design document is summarized below.
Requirements and information:
Six racks in the data-center room (a single row).
Redundant top-of-rack leaf switches with back-to-front cooling in every rack, providing 10/25 Gbps connectivity to servers, storage, and other devices.
Four 100 GbE uplinks per leaf switch.
The customer requested that all switch ports face the rear of the rack racks (hot aisle).
OOB management for servers, storage, and network devices must be provided through an external switch with back-to-front cooling. This switch must 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 must connect to the hospital building through links providing 400 Gbps.
Internet access is provided through an existing firewall cluster containing two firewalls, with one firewall in each data room. The second firewall operates in standby mode, and VRRP is used on the firewalls for failover. The data-center network must connect to these firewalls through links totaling 100 Gbps.
The external link is a direct dark-fiber link based on single-mode fiber (OS2). The distance to the main hospital is 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 must be minimized.
Software upgrades are allowed only once per year, with close to zero downtime.
All life-critical resources are accessed locally, and all resources reside within the hospital campus.
Waratah Hospital requires a highly secure data-center environment. Encrypted wire-speed connectivity between the data room and the hospital is mandatory 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 experienced a security breach that resulted in data loss, network downtime, and identity theft.
Refer to the scenario. A junior colleague recommends deploying CX 8325-32C BF 6F 2AC Bundle switches as border leaf switches. What concern should you raise about this plan?
Answer: A
Explanation:
Evaluating physical switch hardware against mandatory customer requirements is a core function of the lead certification architect. In the Waratah Hospital scenario, the border leaf tier must fulfill two explicit technical constraints for the interconnect to the main hospital: delivering 400 Gbps of aggregate bandwidth and providing hardware-based wire-speed encryption because the dark fiber spans a public roadway.
The CX 8325-32C BF switch provides 32 ports of 40/100 GbE (QSFP+/QSFP28) with back-to-front (port-to- power) airflow. While its port count and airflow are compatible with general rack requirements, the CX 8325 platform does not feature native 400 GbE interfaces, nor does it integrate hardware MACsec (IEEE 802.1AE) encryption engines on its high-speed ports.
Consequently, the CX 8325-32C cannot satisfy the mandatory 400 Gbps encrypted link requirements to the hospital core switches. The architect must reject the junior colleague's proposal and instead specify the Aruba CX 9300-32D / CX 9300S platform, which natively delivers 400 GbE QSFP-DD interfaces with integrated line-rate MACsec capability.
Reference Topics: HPE Aruba CX Switching Architecture - CX 8325 vs. CX 9300 Capabilities; Line-Rate MACsec and 400 Gbps Transport Requirements.
NEW QUESTION # 68
You have designed a spine and leaf topology, which includes 16 leaf switches and four spine switches. The customer has no existing overlay solution. You are helping the implementer work with the customer to obtain IP address blocks for the design. You plan to ask for these /24 subnets. One for an individual loopback interface for each switch. One for point-to-point connections between leaf and spine switches. What is one of the corrections you must make?
Answer: C
Explanation:
In an EVPN-VXLAN spine-leaf design with VSX leaf pairs, you need individual loopbacks for switch identity/control-plane functions and an additional shared loopback per VSX pair for the common VTEP/anycast function.
NEW QUESTION # 69
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?
Answer: D
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 # 70
Waratah Hospital, located in Australia, plans to move many data-center services to a new facility. (The remaining legacy data center is outside the scope of this project.) Waratah Hospital has engaged an external consultant to help design the new data-center network.
Based on the data-center network-infrastructure requirements, the external consultant has produced a high- level design. The design document is summarized below.
Requirements and information:
Six racks in the data-center room (a single row).
Redundant top-of-rack leaf switches with back-to-front cooling in each rack, delivering 10/25 Gbps connectivity to servers, storage, and other devices.
Four 100 GbE uplinks per leaf switch.
The customer requested that all switch ports face the rear of the racks (the hot aisle).
OOB management for servers, storage, and the network must be provided through an external switch with back-to-front cooling. This switch must 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 must connect to the hospital building with links providing 400 Gbps.
Internet access is supplied through an existing firewall cluster with two firewalls, with one firewall in each data room. The second firewall operates in standby mode, and VRRP is used for firewall failover. The data- center network must connect to these firewalls with links totaling 100 Gbps.
The external link is a dark-fiber direct link based on single-mode fiber (OS2). The distance to the main hospital is 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 must be minimized.
Software upgrades are permitted only 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 data-center environment. Encrypted wire-speed connectivity between the data room and the hospital is mandatory 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 experienced a security breach that caused data loss, network downtime, and identity theft.
Given the scenario, what environmental information should be gathered to supplement the design? Choose two.
Answer: B,D
Explanation:
Physical facility engineering is an essential prerequisite in data center network architecture to prevent hardware failure, thermal throttling, and unbudgeted infrastructure redesigns. When validating site facilities against proposed networking equipment, power draw and thermal dissipation must be quantified.
Power requirements-measured in maximum volt-amperes (VA) and watts under peak traffic loads-are essential to size the facility's uninterruptible power supply (UPS) systems, verify circuit breaker capacities, and ensure dual power distribution unit (PDU) feeds can deliver N+1 or 2N electrical redundancy to the switch power supplies. Concurrently, calculating heat dissipation-expressed in British Thermal Units per hour (BTU/hr)-is mandatory for HVAC facilities teams to engineer sufficient computer room air conditioning (CRAC) or air handling (CRAH) capacity.
Failure to accurately size thermal loads risks exceeding thermal thresholds, triggering automated internal fan ramp-ups, thermal degradation alarms, or defensive hardware shutdowns in life-critical medical topologies.
Note that connectivity and switch rack placement are already designated in the high-level design specification.
Reference Topics: HPE Data Center Facilities Preparation - Site Power Sizing, Thermal Management, Heat Dissipation (BTU/hr), and Environmental Constraints.
NEW QUESTION # 71
A customer wants each of their three data centers to be able to fail over workloads to either of the other two sites. Which network design approach best supports this "any-to-any" DR model?
Answer: C
Explanation:
Extending an EVPN VXLAN fabric across all three sites via a DCI allows any site to serve as an active or standby location for any workload, providing symmetric any-to-any failover. Hub-and- spoke and isolated designs don't support symmetric multi-site failover, and static routing doesn't scale for this use case.
NEW QUESTION # 72
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