Which of the following statements is true about using crontab and at to execute tasks?

What is the purpose of the certify operation against a local disk drive?

A system with multiple applications is experiencing bursts of activity. This drives the free pages list
very low, resulting in increased wait times for applications.
Given the vmstat output below, what can be done to increase the number of free pages to compensate for these bursts of activity?

With regard to planned maintenance, which statement about interim fix management is correct?

An existing LPAR is configured with a vSCSI disk for a root volume group. An administrator is
configuring NPIV to provide secondary storage to the partition. DLPAR operations are used to add
the required client and server adapters to the client and VIO Server partitions.
Once the NPIV adapters have been configured, what action should be taken against the client
LPAR to ensure access to SAN storage is not compromised?

Consider the following screen capture.

The administrator needs to add 512 MB of space to the /db2/db2sp1 filesystem.
What must be done before the administrator will be able to add this disk space to the filesystem?

What must be done to change the default AIX login screen, which is displayed before the login

prompt, when a system is accessed using telnet?

In addition to enabling remote command execution, which task highlighted in the graphic below
must be visited to enable an administrator with hmcoperator permissions to run HMC commands
from another server using ssh?

What are the three basic elements of RBAC in AIX?

What is the minimum number of processing units which can be specified in the LPAR profile of an
AIX LPAR hosted on a POWER7 server?