AZ-120 · Question #212
Your on-premises network is connected to an SAP HANA deployment in the East US Azure region. The deployment uses the Standard SKU of an ExpressRoute gateway. You need to implement ExpressRoute…
The correct answer is B. ErGw3Az. ErGw3Az is the only SKU that satisfies both requirements simultaneously: it supports ExpressRoute FastPath (bypassing the gateway for lower latency) and the "Az" suffix designates Availability Zone redundancy, meaning connectivity is maintained even if a single datacenter in…
Question
Your on-premises network is connected to an SAP HANA deployment in the East US Azure region. The deployment uses the Standard SKU of an ExpressRoute gateway. You need to implement ExpressRoute FastPath. The solution must meet the following requirements:
- Hybrid connectivity must be maintained if a single datacentre fails
in the East US region.
- Hybrid connectivity costs must be minimized.
Which ExpressRoute gateway SKU should you use?
Options
- AHigh Performance
- BErGw3Az
- CUltra Performance
- DErGw1AZ
How the community answered
(53 responses)- A8% (4)
- B58% (31)
- C11% (6)
- D23% (12)
Explanation
ErGw3Az is the only SKU that satisfies both requirements simultaneously: it supports ExpressRoute FastPath (bypassing the gateway for lower latency) and the "Az" suffix designates Availability Zone redundancy, meaning connectivity is maintained even if a single datacenter in East US fails. Ultra Performance (C) also supports FastPath but lacks zone redundancy, so it fails the resiliency requirement. ErGw1AZ (D) is zone redundant but does not support FastPath. High Performance (A) supports neither FastPath nor zone redundancy. Since ErGw3Az is the lowest-tier SKU that meets both FastPath and AZ-redundancy needs - ErGw2AZ doesn't support FastPath - it also satisfies the cost minimization requirement.
Memory tip: Think "3AZ = FastPath + Zone Redundancy" - you need at least the 3rd-generation AZ SKU to unlock FastPath while staying resilient. The pattern is: FastPath requires "Ultra" or "3AZ," and resilience requires any "AZ" suffix.
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