Answer (B) is correct . Single sign-on can be the solution in well-managed systems environments. A single ID and password combination is required to allow a user access to all IT resources (s)he needs. A high level of maintenance and security consciousness is required to make single sign-on successful.
Answer (A) is incorrect because Single sign-on does not necessarily create a trap door.
Answer (C) is incorrect because Single sign-on does not necessarily create an administrative bottleneck.
Answer (D) is incorrect because Lock-out of valid users does not necessarily occur under single sign-on any more than it does under multiple sign-on.
| 
