ExpertMedium1 markMultiple Choice
AZ-305 · Question 55 · Domain 4.4: Design Network Solutions
Your company has two major on-premises datacenters: one in New York and one in London.
Both datacenters are connected to Azure via their own dedicated ExpressRoute circuits. You want to enable servers in the New York datacenter to communicate directly with servers in the London datacenter using the Microsoft global backbone network, bypassing the public internet.
Which feature should you enable?
Your company has two major on-premises datacenters: one in New York and one in London.
Both datacenters are connected to Azure via their own dedicated ExpressRoute circuits. You want to enable servers in the New York datacenter to communicate directly with servers in the London datacenter using the Microsoft global backbone network, bypassing the public internet.
Which feature should you enable?
Answer options:
A.
VNet Peering
B.
ExpressRoute Global Reach
C.
Azure Traffic Manager
D.
Site-to-Site VPN
How to approach this question
Keywords: 'on-premises to on-premises', 'via ExpressRoute', 'Microsoft backbone'. This is the exact definition of Global Reach.
Full Answer
B.ExpressRoute Global Reach✓ Correct
ExpressRoute Global Reach
ExpressRoute Global Reach is designed specifically to link your on-premises networks together through the Microsoft global network. If you have an ExpressRoute circuit in New York and another in London, enabling Global Reach allows traffic to flow directly between the two datacenters using Microsoft's highly reliable backbone, rather than traversing the public internet.
Common mistakes
Thinking ExpressRoute automatically routes between on-premises sites. By default, ExpressRoute only routes between on-premises and Azure. Global Reach must be explicitly enabled for site-to-site routing.
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