Broswer Fingerprint Is A Tecnique To Detect Weither The Running Machine Is VM or Not On Web Client. Online Web Based Proctoring Tool Use MAC ADDRESS FILTER and BROWSER FINGERPRINT to detect a VM Machine.
Both can be easily spoofed. If You Spoofed WebGL Profile Then Check Below Your Unmasked Rendered and Unmasked Vendor . Run this site in your physical machine and check the value , create same profile in guest machine and run this site and see the changes.
Open Another Tab Beside This Tab And Notice The Change In The Title Of This Tab.
Click Outside The Window And Notice Change In The Title Of This Page.
Now Use MultiApp Mode In Windows 10 and Open Chrome In Your Host Machine. Keep this page open in guest machine and navigate your mouse to your host machine Chrome. See The Title of This Page
Some proctor test uses resolution to check the vm so in that case don't worry just goto 1920 x 1080 resolution. And if you are using Virtual Box Use Rt_CTRL+M to minimize to VM.
Recommended System 8 GB Ram , i5 Processor and Win 7 Ultimate Should Be Used As A VM OS. It's advised to use Windows only. And don't install too many things on VM Machine.
If you are not able to spoof your webGL profile it's advised to use some other alternatives.