The exhibit displays the output of the vserver name-service ns-switch show command, which defines the lookup order for various name service databases. The question asks for the lookup source for a UNIX user, "prof1". In ONTAP, UNIX user information is resolved using the passwd database. According to the configuration shown for the passwd database, the sources are listed in the order they will be queried: files, then ldap. Therefore, ONTAP will first search the local files source for the user "prof1".

A. nis: The exhibit's output for the passwd database does not include nis as a configured source.

B. dns: The dns source is configured for the hosts database, which is used for hostname-to-IP address resolution, not for user account lookups.

C. ldap: ldap is the second source in the lookup order for the passwd database. It will only be queried if the user is not found in the files source first.

1. NetApp ONTAP Documentation

Name Services Management Guide: In the section "How name service switch configuration works

" it is stated: "The ns-switch configuration file specifies the order in which sources are searched for a given database... For example

you can configure ONTAP to search local files first

and then LDAP for user information (the passwd database)." This directly confirms that the passwd database is for user information and the order shown in the command output is the search order.

2. NetApp ONTAP 9 Commands Manual Page Reference

vserver name-service ns-switch show: The documentation for this command explains that it displays the current name service switch source lookup order for the specified databases (passwd

group

hosts

etc.). The order of sources displayed in the output is the order in which ONTAP performs the lookups.

3. NetApp Technical Report 4067 (TR-4067)

NFS in NetApp ONTAP: Section 3.1

"Name Services

" discusses the importance of the name service switch file (ns-switch) in determining the lookup order for different databases

including passwd for user information. It clarifies that the order listed dictates the search path for identity resolution.