Explanation:
The correct answer is A. Vertical scaling, also known as scaling up, involves adding more power or memory, such as additional CPU or RAM, to an existing machine. In this case, adding an additional CPU to an existing Azure virtual machine represents vertical scaling. In contrast, horizontal scaling (B, C, and D) refers to adding more instances or machines to distribute the load.
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In the context of cloud computing, which action exemplifies vertical scaling by enhancing the capacity of an existing resource?
A
adding an additional CPU to an existing Azure virtual machine
B
adding an additional Azure virtual machine
C
adding an additional Azure Virtual Desktop session host
D
adding an additional Azure App Service instance automatically
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