AZ-800 ExpressRoute Circuit Configuration 3

Question 1

You need to configure ExpressRoute for a circuit that requires 10 Gbps bandwidth. Which ExpressRoute circuit SKU family supports this bandwidth?

Accepted Answer

ExpressRoute Direct only

Answer

ExpressRoute Direct is required for bandwidths of 10 Gbps and 100 Gbps, as standard provider circuits only go up to 10 Gbps but require Direct for native 10G port access.

Question 2

Which routing attribute determines the preferred path when multiple ExpressRoute circuits are available for outbound traffic from Azure to on-premises?

Accepted Answer

BGP MED (Multi-Exit Discriminator)

Answer

Azure uses the BGP MED attribute to prefer paths when routing outbound traffic across multiple ExpressRoute circuits to on-premises networks.

Question 3

An administrator needs to allow a virtual network in a different subscription to use an ExpressRoute circuit. What must be configured on the circuit first?

Accepted Answer

A circuit authorization

Answer

A circuit authorization generates a key that can be redeemed in another subscription to create a connection to the ExpressRoute circuit.

Question 4

What is the purpose of configuring a route filter on an ExpressRoute Microsoft peering connection?

Accepted Answer

To select which Microsoft cloud services' BGP communities are advertised to your network

Answer

Route filters on Microsoft peering allow you to select which BGP community-tagged service prefixes (like Office 365 or Azure PaaS) are advertised to your on-premises network.

Question 5

You configure ExpressRoute private peering with a /29 subnet for the primary link. Azure uses the first usable IP and your router uses the second. What subnet size does Microsoft actually recommend for these links?

Accepted Answer

/30 subnets

Answer

Microsoft recommends /30 subnets for ExpressRoute primary and secondary link configurations, providing exactly two usable host addresses.

AZ-800 - Microsoft Azure Networking Solutions Practice Test

AZ-800 - Microsoft Azure Networking Solutions Practice Test

AZ-800 ExpressRoute Circuit Configuration 3