Question

All Azure virtual machines have at least ________ disk(s).
a.1
b.2
c.3

Answer 1

All Azure virtual machines have at least b.2 disk(s).

Step-by-step explanation:

Azure virtual machines (VMs) typically come with an operating system disk (referred to as the C: drive) and a temporary disk (D: drive) by default. The operating system disk is used for the VM's OS installation and general storage, while the temporary disk is intended for short-term storage needs. Therefore, the correct answer is **b.2**, as Azure VMs have at least these two disks.

The operating system disk, often labeled as Disk 0, is persistent and retains data even after VM restarts. It is essential for the functioning of the VM. On the other hand, the temporary disk, labeled as Disk 1, is temporary and volatile. It is used for tasks like page or swap files and caching. It's important to note that any data stored on the temporary disk may be lost if the VM is stopped or restarted.

In summary, the minimum configuration for disks on an Azure VM includes the operating system disk (Disk 0) and the temporary disk (Disk 1). While additional data disks can be added based on specific requirements, the two mentioned disks are integral components of every Azure virtual machine, making option b.2 the correct answer.

Answer 2

To find the number of smaller disks in system B such that the moment of inertia equals that of system A, the calculations lead to 4 smaller disks required to match the inertia. So, the best option is d, none of them.

Step-by-step explanation:

The question asks about the comparison of moments of inertia between two different systems of disks in a physics problem related to rotational motion. To solve this problem, we use the formula for the moment of inertia of a disk, which is I = 0.5MR2, where M is the mass of the disk and R is the radius.

For system A, which consists of two larger disks (each with radius 2R), the moment of inertia is:

IA = 2 * 0.5M(2R)2 = 4MR2.

For system B, which consists of one larger disk and n smaller disks (each with radius R), the moment of inertia is:

IB = 0.5M(2R)2 + n * 0.5MR2 = 2MR2 + 0.5nMR2.

Solving for n when IA = IB, we get:

4MR2 = 2MR2 + 0.5nMR2

4 = 2 + 0.5n

n = 4

Therefore, there are 4 of the smaller disks in system B to make the moments of inertia equal between system A and system B.

So, the best option is d, none of them.

Q: All Azure virtual machines have at least ________ disk(s).

a.1

b.2

c.3

d. none of them