Meridian Transit plans to deploy a new critical scheduling application in the West Europe … — Microsoft Azure Administrator (AZ-104)

Meridian Transit plans to deploy a new critical scheduling application in the West Europe region. The application requires two virtual machines named `VM-Sched1` and `VM-Sched2`. The deployment must meet the following requirements:
- Protect the application against the failure of an entire datacenter.
- Achieve a virtual machine uptime Service Level Agreement (SLA) of $99.99\%$ .

Which configuration should you implement?

A
Create an Availability Set named `AvSet-Sched` configured with $2$ fault domains and $5$ update domains. Deploy `VM-Sched1` and `VM-Sched2` into the Availability Set.
Deploy `VM-Sched1` in Availability Zone $1$ and `VM-Sched2` in Availability Zone $2$ , and associate them with a Standard Load Balancer.Answer
C
Create an Availability Set named `AvSet-Sched` and configure it to span across Availability Zone $1$ and Availability Zone $2$ . Deploy `VM-Sched1` and `VM-Sched2` into the Availability Set.
D
Deploy `VM-Sched1` and `VM-Sched2` as standalone virtual machines using Premium SSDs in a single Availability Zone, and associate them with a Basic Load Balancer.

Answer

Deploy the virtual machines in different Availability Zones (Availability Zone

1

and Availability Zone

2

) and associate them with a Standard Load Balancer.

Deploying virtual machines across different Availability Zones provides protection against datacenter-wide failures because each zone is a physically separate location with independent power, cooling, and networking. This configuration qualifies for the highest Microsoft Azure VM uptime Service Level Agreement (SLA) of

99.99\%

. A Standard Load Balancer is required when routing traffic to zone-redundant backend pools.

Step-by-Step Solution

Analyze the SLA and high availability requirements.

The requirement specifies a

99.99\%

SLA and protection against an entire datacenter outage.

Determining these limits helps rule out Availability Sets, which only offer a

99.95\%

SLA and do not protect against datacenter-wide failures.

Evaluate Availability Zones vs Availability Sets.

Availability Zones consist of unique physical locations within an Azure region, providing

99.99\%

SLA and datacenter-level fault tolerance. Availability Sets are restricted to a single datacenter/zone.

Selecting Availability Zones is necessary to meet the

99.99\%

SLA and datacenter redundancy requirements.

Determine the load balancer SKU requirements for zone-redundant backend pools.

A Standard Load Balancer is required to distribute traffic to virtual machines deployed across different Availability Zones.

A Basic Load Balancer does not support cross-zone backend configurations, which is necessary for this zonal deployment.

Key Concept

Deploying virtual machines across Availability Zones to achieve high availability and a

99.99\%

SLA.

Estimated Time:2m 0s

Question

Answer

Step-by-Step Solution

Key Concept

Common Mistakes

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