advantaegs of datasource over DriverManager

Folks Can anyone please explain teh advantages of using datasource over DriverManager. All my interviewers are asking me the same questions iam really bugged here.
[177 byte] By [BenjaminJavaa] at [2007-11-26 15:21:25]
# 1
You can do a JNDI lookup of a DataSource; can't do such a thing with DriverManager.%
duffymoa at 2007-7-8 21:36:14 > top of Java-index,Database Connectivity,Java Database Connectivity (JDBC)...
# 2
All my interviewers are asking me the same questions iam really bugged here.Maybe this is an indication that you're not qualified for the position? No, that couldn't be it...
dcmintera at 2007-7-8 21:36:14 > top of Java-index,Database Connectivity,Java Database Connectivity (JDBC)...