2V0-620 · Question #82
A vApp named Sales has a Memory Limit of 32 GB and a CPU Limit of 12,000 MHz. There are three virtual machines within the vApp: Sales-DB -- Has a memory reservation of 20 GB. Sales-DC -- Has a…
The correct answer is C. Only two of the three virtual machines can power on. The combined memory reservations of all three VMs total 36 GB (20+8+8), which exceeds the vApp's 32 GB memory limit. Since reservations must be fully satisfied at power-on, the vApp enforces the cap and prevents the third VM from starting.
Question
A vApp named Sales has a Memory Limit of 32 GB and a CPU Limit of 12,000 MHz. There are three virtual machines within the vApp:
Sales-DB -- Has a memory reservation of 20 GB. Sales-DC -- Has a memory reservation of 8 GB. Sales-Web -- Has a memory reservation of 8 GB. Which statement is correct?
Options
- AAll three virtual machines can power on, but will have memory contention.
- BAll three virtual machines can power on without memory contention.
- COnly two of the three virtual machines can power on.
- DOnly one of the virtual machines can power on.
How the community answered
(24 responses)- A4% (1)
- B13% (3)
- C58% (14)
- D25% (6)
Why each option
The combined memory reservations of all three VMs total 36 GB (20+8+8), which exceeds the vApp's 32 GB memory limit. Since reservations must be fully satisfied at power-on, the vApp enforces the cap and prevents the third VM from starting.
Memory contention is a run-time resource competition issue, but the problem here is a hard vApp limit that blocks power-on entirely - not a contention scenario among running VMs.
The total reservations of 36 GB mathematically exceed the 32 GB vApp limit, making it impossible for all three VMs to power on regardless of contention.
A vApp memory limit acts as a hard ceiling on total memory the vApp can allocate; with 36 GB in combined reservations but only 32 GB available, at most two VMs whose reservations fit within 32 GB can power on simultaneously, leaving one unable to start.
Two VMs can successfully power on together - for example, Sales-DB (20 GB) plus Sales-DC (8 GB) equals 28 GB, which is within the 32 GB vApp limit.
Concept tested: vApp memory limit enforcement with VM reservations
Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.resmgmt.doc/GUID-5B3CB875-FD4A-4E7F-BB7D-3F37EB7B2E14.html
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