Compute and Network

Question 1

What is the purpose of Virtual Machine Scale Sets?

Answer 1

To create and manage a group of identical, load-balanced VMs that automatically scale based on demand or schedule.

Question 2

How do Virtual Machine Availability Sets ensure high availability?

Answer 2

By grouping VMs into update domains and fault domains to stagger updates and vary power/network sources.

Question 3

What benefit do Virtual Machine Scale Sets provide regarding load balancing?

Answer 3

They automatically deploy a load balancer to ensure efficient resource usage.

Question 4

How do availability sets protect against physical power or networking failures?

Answer 4

A: By splitting VMs across up to three fault domains, each connected to different power and networking resources.

Question 5

What distinguishes policy-based from route-based VPN gateways?

Answer 5

Policy-based VPN gateways specify static IP addresses for encryption, while route-based VPN gateways use IP routing to decide tunnel interfaces.

Question 6

When should you use a route-based VPN gateway?

Answer 6

For connections between virtual networks, point-to-site connections, multisite connections, coexistence with Azure ExpressRoute, and high-availability scenarios.

Question 7

What is an ExpressRoute failover?

Answer 7

A: Configuring a VPN gateway as a secure failover for ExpressRoute connections, ensuring continuous connectivity even if ExpressRoute circuits face outages.

Question 8

What type of routing protocol supports active/active VPN gateways?

Answer 8

Border Gateway Protocol (BGP).