IBM S1000-007 IBM AIX v7 Administrator Specialty Exam Practice Test

To make the paging spacepaging00active after the next reboot, thechpscommand is used. Thechps -a y paging00command will set the paging space to be automatically activated at boot time. This ensures that the paging space will be available and active after the system reboots.References:= IBM AIX Documentation

When a file system corruption error is reported in the system error log, the appropriate action is to check the error log for specific details, unmount the affected file system, and run thefsck(file system check) command. This command checks and repairs inconsistencies and errors in the file system, which can help resolve the corruption issue. It is essential to unmount the file system before runningfsckto avoid further data corruption.References:= IBM AIX Documentation

In AIX, error entries related to a system crash are preserved by writing them to Non-Volatile Random Access Memory (NVRAM). These entries are processed and logged to the system error log when the system comes back up. This ensures that critical error information is not lost during a system crash.References:= IBM AIX Documentation

To resolve the issue with the power supply, the administrator should rundiagwith the option to log the repair action. This command will allow the system to acknowledge the hardware replacement and update the hardware error log, thus preventing further false reports regarding the power supply problem.References:= IBM AIX Diagnostic Documentation

The account name "adm" is a standard account that comes pre-installed with AIX. It is used for system administration tasks and has specific roles and permissions associated with it. Attempting to create a new account with the same name would conflict with the existing standard account, hence it cannot be used for creating a new user account.References:= IBM AIX Documentation

Thealogcommand is used to view the AIX boot log. This command accesses the boot log file, which contains messages and information about the boot process. The boot log helps administrators troubleshoot and understand the sequence of events during system startup.References:= IBM AIX alog Command Documentation

In the/etc/filesystemsfile, theautoattribute can be set tonoto prevent the automatic mounting of NFS filesystems during system startup. This ensures that the system does not attempt to mount NFS filesystems, thereby avoiding potential hangs during network outages.References:= IBM AIX Documentation

To upgrade from one release of AIX to another (such as from AIX 7.1 to AIX 7.2), the recommended method is a Migration Install. This method allows the administrator to upgrade the operating system while preserving existing data and settings. It updates the existing AIX installation to the new version, ensuring compatibility and continuity of system configurations and installed applications. The other methods, such as Preservation Install, New and Complete Overwrite Install, and Update Install, are either not suitable for upgrading to a new release or would result in data loss or incomplete updates.References:= IBM AIX Documentation

Thevmstat -scommand in AIX displays various system statistics since the last reboot, including the cumulative count of paging space page outs and free frame waits. This command provides detailed system performance information, which helps in diagnosing memory and paging issues. Other commands listed, such asps guw,svmon -G, andioo -L, do not provide cumulative counts of these specific metrics.References:= IBM AIX Documentation

The creation of themksysbbackup image has failed due to insufficient free space in/tmp. Themksysbcommand requires sufficient space in the/tmpdirectory to create temporary files during the backup process. If there is not enough free space, the backup process will fail.References:= IBM AIX Backup and Recovery Documentation

After creating an additional filesystem using thecrfs -g rootvgcommand, themklvcopycommand should be run to mirror the corresponding logical volume. This command creates additional copies of the logical volume, ensuring that the mirroring is completed.References:= IBM AIX Mirroring Documentation

The error message indicating a refused connection operation suggests that thenimshsubsystem on the NIM client may not be active. The administrator should check the status of thenimshsubsystem and start it if necessary. This ensures that the NIM master can communicate with the client to perform software updates. The other options do not directly address the issue related to thenimshconnection.References:= IBM AIX Documentation

To unconfigure a device and remove its definition from the Customized Devices object class in AIX, the commandrmdev -dl rmtOis used. The-doption indicates the removal of the device definition, and the-loption specifies the logical name of the device. This command ensures that both the device configuration and its definition are deleted from the system.References:= IBM AIX Documentation

To prevent the telnet daemon from running and restarting after a reboot, the administrator should comment out the line related to telnet in the/etc/inetd.conffile by inserting a#at the beginning of the line. After making this change, running therefresh -s inetdcommand will apply the changes to theinetdservice without requiring a system reboot. This effectively disables the telnet service.References:= IBM AIX Documentation

The chvg command with the -t option is used to reduce the maximum number of physical volumes (PVs) allowed in a volume group (VG). This is necessary when the number of PVs in a VG exceeds the maximum allowed. Reference: IBM AIX v7 Administration Specialty Study Guide (section 10.3.3, pp. 641-642).

Thechvg -tcommand in AIX is used to change the factor by which the maximum number of physical partitions (PPs) per physical volume (PV) is increased. When this command is used to increase the maximum PPs, it allows more physical partitions on a physical volume, but it reduces the maximum number of physical volumes that can be included in the volume group. This is necessary when the required PPs exceed the current limit due to large disk sizes or large numbers of partitions.References: IBM AIX Documentation - chvg

"The command to limit root user access to only members of the group called system is chadmin group=system root. This command will set the primary group of the root user to the system group, thereby limiting root user access to only members of that group. This command can be used to set any user's primary group, not just root." The source of this information is the IBM AIX v7 Administrator Specialty Study Guide.

 The /etc/hosts file is used by the system for local name resolution on the server, so if the IP address of the server has been changed, but the /etc/hosts entry has not been updated, the ping command will fail. This is explained in the IBM AIX v7 Administrator Specialty Study Guide, under the topic "Using the mktcpip Command".

The mkps command creates a paging space and activates it when the system is rebooted. This is explained in the IBM AIX v7 Administrator Specialty Study Guide, under the topic "Creating and Activating a Paging Space".

The command used to monitor SAN I/O performance/throughput is iostat -DIRT 60 10. The iostat command is used to monitor I/O performance and throughput on a SAN device. The DIRT (Disk I/O Response Time) flag can be used to display the response time for each I/O request. The last two arguments, 60 and 10, are the interval (in seconds) and the number of iterations respectively. This command will monitor I/O performance/throughput every 60 seconds for 10 iterations.

When an administrator encounters a "failure replaying log" error duringfsck, it indicates that the log device associated with the file system is corrupted. The next step is to format the log device using thelogformcommand. Runninglogform /dev/ulv11will reinitialize the log device, clearing any corruption and allowingfsckto proceed without errors. This process effectively resets the log, which is necessary for file system recovery.References: IBM AIX Documentation – logform

Devices that are connected to the system can be in one of four states.

Devices that are connected to the system can be in one of the following states:

Item

Description

Undefined

The device is unknown to the system.

Defined

Specific information about the device is recorded in the customized database, but it is unavailable to the system.

Available

A defined device is coupled to the operating system, or the defined device is configured.

Stopped

The device is unavailable but remains known by its device driver.

If a tty device and a printer alternately use the same tty connector, both a tty device and a printer are defined on the same parent and port in the device configuration database. Only one of these devices can be configured at a time. When the tty connector is configured, the printer specific setup information is retained until it isconfigured again. The device is not removed; it is in the defined state. Maintaining a device in defined state retains customized information for a device that is not currently in use, either before it is first made available or while it is temporarily removed from the system.

If a device driver exists for a device, the device can be made available through the device driver.

https://www.ibm.com/docs/en/aix/7.2?topic=nodes-device-states

According to the IBM AIX v7 Administrator Specialty Study Guide, the lsmcode command is used to list the microcode of the system. The -A flag is used to list the microcode level and the active microcode level of the system. This command can be used to confirm the system firmware level which is required to use the IBM Fix Level Recommendation Tool (FLRT).

The cfgmgr command updates the system configuration database with the current configuration of the devices attached to the system. When the SAN administrator increases the size of a LUN device (hdisk), it is not automatically reflected on the AIX LPAR. Running the cfgmgr command updates the system with the new size information and makes it visible to the system administrator.

This error indicates that the maximum number of logical partitions for the logical volume is set to 256 and needs to be increased in order to allow the file system to be extended. From the IBM AIX v7 Administrator Specialty Study Guide: "The 0516-787 error indicates that the maximum number of logical partitions for the logical volume is set to 256, and needs to be increased in order to allow the file system to be extended."

When using the connect=shell option, a successful NIM operation requires that the root user on the NIM client has an entry in its .rhosts file for the NIM master, and that the file permissions are set to 600. This is documented in the IBM AIX v7 Administrator Specialty Study Guide. More information on this can be found at https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/com.ibm.aix.security/nim_security.htm.

The two additional commands that an AIX V7.2 administrator should run after mirroring the rootvg with the mirrorvg command are 'bosboot' and 'bootlist'. The bosboot command is used to update the boot image on all disks in the volume group, and the bootlist command is used to set the boot order for the system. These commands are available on IBM AIX v7 systems and are documented in the IBM AIX v7 Administrator Specialty Study Guide. For more information, please see the IBM documentation at https://www.ibm.com/support/knowledgecenter/ssw_aix_72/com.ibm.aix.cmds3/bosboot.htm  and https://www.ibm.com/support/knowledgecenter/ssw_aix_72/com.ibm.aix.cmds3/bootlist.htm.

In AIX, console log messages are recorded using thealogcommand. Thealogutility manages log files, including the console log, which captures system messages and output sent to the console. This utility provides a means to view and manage these logs for diagnostic and auditing purposes.References: IBM AIX Documentation – alog