S1000-007 IBM AIX v7 Administrator Specialty Questions and Answers

CPU Entitlement is a setting in the LPAR profile that defines the amount of guaranteed CPU time allocated to an LPAR. This setting is important for workloads that require a steady level of performance, as it guarantees that the LPAR will always have access to a certain percentage of the processing power on the managed system. Reference: IBM AIX v7 Administrator Specialty Study Guide.

The "chadmin" command can be used to modify the attributes of a user account, including the groups that the user belongs to. The syntax for limiting root user access to members of the group called "system" would be:

sql

chadmin group=system root

This command will add the root user to the "system" group and remove it from any other groups. Members of the "system" group will be the only ones able to access the root account.

A mksysb image is a snapshot of the AIX operating system and its configuration, so it can be used to boot the server and perform the required maintenance tasks. However, in order to use the mksysb image, the administrator may need to create a machine resource in the NIM environment first. According to the IBM AIX v7 Administrator Specialty Study Guide (page 13-6), the mksysb image should be used in combination with a previously created machine resource, which defines the parameters for the installation.