=== Exercise Settings ===
New feature added to the subsystem exercises is locking and unlocking them through the use of a password.

[{{ :en:teacher:exercises:teacher_exercise_settings_1.jpg?600 |Password unlocking}}]

The above feature was added on the one hand to limit access to certain users only and on the other to increase the safety level for non-authorized users. This way, the teacher can, depending on the case, allow access to an exercise or not.

[{{ :en:teacher:exercises:teacher_exercise_settings_2.jpg?600 |Password unlocking}}]

By the password given to you by the teacher you can gain access to an exercise which is password protected. Insert your password in the relevant field and complete the exercise. 

=== “Unlocking for certain IP(s) or IP CIDR(s)” ===

By integrating this feature in the platform the teacher of the course has the capability to restrict access to certain IP addresses or specific subnetworks of a local network. This is very useful in conducting exams in a specific room (i.e. the laboratory) under the supervision of the teacher.
There are 3 types of addresses which can be used : 

1) full addresses which correspond to a specific computer or server. These usually have the form of 192.168.10.1

[{{ :en:teacher:exercises:teacher_exercise_settings_3.jpg?600 |Full addresses}}]

2) Full addresses IPv6 of the form 2a….. addresses which correspond to a specific computer or server.

[{{ :en:teacher:exercises:teacher_exercise_settings_4.jpg?600 |Full addresses IPv6}}]

3) CIDR subnetworks of the form 195.134.156.10/24 which allows you to clearly specify the subnetworks you are referring to.  

[{{ :en:teacher:exercises:teacher_exercise_settings_5.jpg?600 |CIDR form}}]