You administer a growing network of systems. The task is becoming more challenging as the network grows. Each system uses local files to authenticate users. People using a variety of systems have…

You administer a growing network of systems. The task is becoming more challenging as the network grows. Each system uses local files to authenticate users. People using a variety of systems have accumulated many login names and passwords. You find that it is difficult to service users' authentication problems. What are two solutions to these problems? (Choose two.)