You are the Exchange administrator for your company. The Exchange organization contains 10 servers that run Exchange Server 2003, All users send and receive e-mail messages by using Microsoft Outlook.
Your company has many different departments and a total of 10,000 users. For each department, management asks you to create one address list that contains all users in that department.
Management also asks you to create a confidential address list. The membership of the confidential address list will consist of several users from every department.
For each department, you create an address list that uses the department attribute.
Now you need to create the confidential address list. You must ensure that members of the Managers group are the only user; who can identify the members of the list by using outlook.
You must not affect any existing e-mail functionality.
What should you do?

A.
Modify the permissions of the user accounts of individuals in the confidential address list so that only the Managers group has permission to send e-mail messages to these accounts.
Create a confidential address list that includes the required user accounts.

B.
Modify the permissions of the user accounts of individuals in the confidential address list so that only the Managers group has permission to view these accounts.
Create a confidential address list that includes the required user accounts.

C.
Configure the department attribute as confidential for the user accounts of individuals in the confidential address list.
Create an address list that uses the department attribute. Modify the permissions on the address list so that only the Managers group has permission to view its membership.

D.
Configure a custom attribute as Confidential for the user accounts of individuals in the confidential address list. Create an address list that uses the custom attribute.
Modify the permissions on the address list so that only the Managers group has permission to view its membership.

Explanation:
In order to prevent affecting the current e-mail functionality, the use of a custom attribute
is required. There are 15 custom attributes available in Exchange 2003 for defining things
such as special memberships. Enabling and grouping based on these attributes will not
affect any other distribution lists.
Incorrect answers:
A. Modifying permissions on individual accounts will change the memberships of the
existing groups. Other users will not be able to send mail to these modified users, and this
would disrupt the existing e-mail functionality.
B. Modifying permissions so only managers will be able to see the accounts will also
disrupt the existing functionality, as anytime a user wants to send to anyone in this group
(whether they want to send to the whole group or not does not matter) they will not be
able to see them. Remember that the purpose of the confidential group is not to hide the
members from getting normal mail, but to hide the fact that these people are in a
confidential group.
C. Configuring the Departmental attribute in this way will prevent the users in the group
from receiving normal departmental mail. This will disrupt the normal e-mail
functionality. In addition, the users will not be seen by their own departments.
Reference
Exchange 2003 Admin HELP