ExpertHard1 markMultiple Choice
AZ-305 · Question 51 · Domain 4.4: Design network solutions
CASE STUDY (Questions 51-55)
Contoso Financial is a global investment bank.
Current Infrastructure:
- On-premises datacenters in New York, London, and Tokyo.
- Azure regions used: US East, Europe West, Japan East.
- Each on-premises datacenter is connected to its local Azure region via a 10 Gbps ExpressRoute circuit.
- Azure architecture uses a Hub-and-Spoke topology in each region.
Business Requirements:
- The network architecture must support global failover. If the US East region fails, the New York datacenter must be able to route traffic to the Europe West Azure region.
- All outbound internet traffic from Azure VMs must be inspected by a centralized firewall.
- Azure PaaS services (SQL, Storage) must not be accessible from the public internet.
- Network management overhead must be minimized as the company plans to add 50 more spoke VNets per region next year.
Question 1 of 5:
To meet the global failover requirement, the New York datacenter must be able to communicate with the Europe West Azure region if US East fails.
Which ExpressRoute feature or architecture should you implement?
CASE STUDY (Questions 51-55)
Contoso Financial is a global investment bank.
Current Infrastructure:
- On-premises datacenters in New York, London, and Tokyo.
- Azure regions used: US East, Europe West, Japan East.
- Each on-premises datacenter is connected to its local Azure region via a 10 Gbps ExpressRoute circuit.
- Azure architecture uses a Hub-and-Spoke topology in each region.
Business Requirements:
- The network architecture must support global failover. If the US East region fails, the New York datacenter must be able to route traffic to the Europe West Azure region.
- All outbound internet traffic from Azure VMs must be inspected by a centralized firewall.
- Azure PaaS services (SQL, Storage) must not be accessible from the public internet.
- Network management overhead must be minimized as the company plans to add 50 more spoke VNets per region next year.
Question 1 of 5:
To meet the global failover requirement, the New York datacenter must be able to communicate with the Europe West Azure region if US East fails.
Which ExpressRoute feature or architecture should you implement?
Answer options:
A.
ExpressRoute Global Reach
B.
Connect the New York ExpressRoute circuit to the Europe West ExpressRoute gateway.
C.
Global VNet Peering between US East and Europe West
D.
ExpressRoute FastPath
How to approach this question
Understand that ExpressRoute circuits are not tied to a single region. You can link one circuit to multiple regional gateways.
Full Answer
B.Connect the New York ExpressRoute circuit to the Europe West ExpressRoute gateway.✓ Correct
Connect the New York ExpressRoute circuit to the Europe West ExpressRoute gateway.
ExpressRoute circuits are not bound to a single Azure region. A standard ExpressRoute circuit can be linked to up to 10 Virtual Network Gateways across different regions within the same geopolitical boundary (or globally with the Premium add-on). By linking the New York circuit directly to the Europe West gateway, New York retains connectivity to Azure even if the US East region goes offline.
Common mistakes
Choosing Global Reach. Global Reach is specifically for routing traffic from On-Premises Site A to On-Premises Site B using Azure's backbone.
Practice the full Azure Solutions Architect Expert AZ-305 Practice Exam 3
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