Lesson Review

1.	What is a directory service?
2.	What is the primary benefit of a directory service?
3.	What are the key user record attributes?
4.	What is the difference between how crypt and shadow hash passwords are stored?
5.	What is the default password type for Mac OS X v10.4?
6.	What is the purpose of the GroupMembers attribute in a groups record?
7.	What is the format of the Password value in an Open Directory user record?
8.	What is the purpose of the PrimaryGroupID value in a group record?

Answers

1.	A directory service is the process(es), protocol(s), and data store(s) that provide a method for requesting data and receiving that data in a scalable, centralized, and distributable manner.
2.	A directory service provides a centralized location for commonly requested system information.
3.	RecordName, RealName, UniqueID, GeneratedUID, Password, NFSHomeDirectory, and UserShell
4.	A crypt password is stored as a hash in the user account. A shadow password is stored as several hashes in a file elsewhere.
5.	hash
6.	GroupMembers is a list of the generated UIDs for users and other groups that are members of the group.
7.	If a password is stored in the user record, it is stored in crypt format.
8.	It serves as a unique identifier for the group.