disabling all notifications from windows

I have online exams for a week. The department uses a system called Wheebox Wheebox .
Our exam department have sent us email to turn of all notifications from computers.

Any pop up notification on system during exam will be taken as a noise. Meaning improper attempt to cheat in exam. Also they have mentioned in email system is very sensitive to sound and they may take the sound of any kind as violation of fair practice.
So I want to disable any kind of notification and noise. How can I do so .

I am using Windows 10.

How to disable sound for notifications using Control Panel:
1. Open Control Panel.
2. Click on Hardware and sound.
3. Click the Change system sounds link.
4. Under "Windows," scroll and select Notifications.
5. On the "Sounds," drop-down menu, select (None).
6. Click Apply.
7. Click OK.

To change system notifications:
1. Select the Start button, and then select Settings .
2. Go to System > Notifications & actions.
3. Notifications & actions settings page in Windows 10
4. Do any of the following:
- Choose the quick actions you'll see in action center.
- Turn notifications, banners, and sounds on or off for some or all notification senders.
- Choose whether to see notifications on the lock screen.
- Choose whether to see notifications when you're duplicating your screen.
- Turn tips, tricks, and suggestions about Windows on or off.