Which security mechanisms are provided in each of the follow

Which security mechanism(s) are provided in each of the following cases? A school demands student identification and a password to let students log into the school server. A school server disconnects a student if she is logged into the system for more than two hours. A professor refuses to send students their grades by e-mail unless they provide student identification they were pre-assigned by the professor. A bank requires the customers signature for a withdrawal.

Solution

In the above mentioned cases , security mechanism which is provided is \"Authentication\".

As we can observe from the different cases, authentication identifies who is requesting the resource.

In example1,  A school demands student identification and a password to let students log into the school server and also the server disconnects a student if she is logged into the system for more than two hours.

When student provides with identification id and password , it is then authenticated with the Student\'s database of school. If entries are matched , respective student gets the access and can log in to the system for maximum 2 hours after which the session expires and the student has to provide with the credentials again.

If there are no records for Student\'s credentials in Student\'s database for School , then there is authentication failure and student is not allowed to login/access the system.

Similarly, in other example bank requires customer\'s signature for a withdrawal. Customer\'s signature is authenticated/matched with the signature in Bank\'s database. If matched only then the customer is allowed to withdraw money from bank.