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Zorluk: OrtaHigh Availability, Scalability, and Elasticity

An enterprise logistics company is migrating its workloads to Azure. The company needs to design an architecture that automatically adjusts resources during unpredictable traffic spikes and remains operational if a single datacentre fails. Which of the following statements correctly describe the cloud concepts that meet these architectural goals? (Select TWO).

  1. Configuring a Virtual Machine Scale Set to automatically add instances during high-traffic periods and remove them when demand decreases represents elasticity.Cevap
  2. Deploying application instances across multiple Availability Zones to ensure the system remains accessible during a localized power outage represents high availability.Cevap
  3. C
    Manually upgrading a database virtual machine to a higher performance tier to handle a permanent increase in users is an example of elasticity.
  4. D
    Replicating virtual machines to a secondary geographical region to recover from a primary region outage is the primary method to achieve high availability.

Cevap

The correct statements are that configuring virtual machine scale sets to automatically scale based on demand represents elasticity, and deploying across multiple Availability Zones to protect against localized power outages represents high availability.
The correct options are those stating that automatic scaling of virtual machine scale sets represents elasticity, and utilizing multiple Availability Zones within a region to survive localized failures represents high availability. Elasticity is defined by automated scaling in response to fluctuating demand. High availability focuses on eliminating single points of failure within a region to maximize uptime.

Adım Adım Çözüm

1
Analyze the business requirements of the logistics company.
The company needs automatic resource adjustment (dynamic load handling) and resilience to single datacentre failures (local redundancy).
This establishes the cloud characteristics that are being evaluated.
2
Evaluate the statement regarding automatic scaling and virtual machine scale sets.
This matches the definition of elasticity, which is automatic and dynamic scaling based on real-time demand.
To distinguish elasticity from static or manual scaling.
3
Evaluate the statement regarding Availability Zones and localized power outages.
This matches the definition of high availability, which focuses on localized redundancy to ensure continuous uptime.
To distinguish high availability from disaster recovery.

Anahtar Kavram

Understanding the differences between high availability, scalability, and elasticity in Azure.
Tahmini Süre:1m 30s
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