What is the advantage of single sign-on? (Choose two options)

Answer options:

A.Users can access authorized network resources using one login
B.Provides the ability to users to log to one system and have access to additional systems, enabled systematically
C.Provides more administrative costs
D.Users will waste time logging from one system to another

Correct Answer: A and B 
Single sign on gives users the ability to log into one system and have access to additional systems, facilitated systematically as an outcome. So, users will be able to access authorized network resources using one login. This will result in less administrative costs and will be time saving. 
Option C is incorrect because single sign on results in less administrative costs where system administrators get less requests to reset forgotten passwords. 
Option D is incorrect because single sign on have an advantage of time saving and increases productivity because of the time saving. So, users will not waste their time at all. 
Reference: 

https://help.salesforce.com/articleView?id=sso_about.htm&type=5