In your question whereas there is a class named window and it would be like this:
class window {
//code here
}
Next is there is a function called close and freeresource and it goes like this:
class window{
function close( ){
//code here
}
function freeresource( ){
// code here
}
public destruct (){
this.close();
this.freeresource();
}
}
The last code function destruct invokes the function close and freeresource. Hope this would help
Answer:
Discretionary Access Control model
Explanation:
Discretionary Access Control (DAC) gives owners of a resource full control of objects/items they have created or been given access to, this also includes sharing the objects/items with other subjects. These owners have control over their data and maintain access through ACLs. The access-control list (ACL), is a list of permissions attached to an object in a computer file system.
The Owners can decide to grant other users access to their files, change their attributes, alter them, or delete them. DACs are discretionary because the owner can transfer information access to other users.
Common examples are ATMs, POS terminals, and airport ticket vending machines. Cashierless checkout technologies like “Scan and Go,” inventory scanning, corporate-owned work profile devices, self-ordering kiosks, mobile devices, and POS/m POS are some of the most common examples of dedicated devices in use today.
