S1000-007 Practice Exam Questions with Answers IBM AIX v7 Administrator Specialty Certification

The "lslpp" command can be used to display information about filesets installed on an AIX system. To determine which files are included in the "useful_fileset" fileset, the administrator can run the following command:

lslpp -f useful_fileset

This command will display detailed information about the "useful_fileset" fileset, including a list of the files that are included in the fileset. This information can be useful for verifying the installation of the fileset and for troubleshooting problems that may be related to the fileset.

This command displays system configuration information, including the number of processors, amount of memory, and list of devices on the AIX partition. This command is part of the AIX Operating System, and is documented in the IBM AIX v7 Administrator Specialty Study Guide. More information on this command can be found at https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/com.ibm.aix.cmds3/prtconf.htm.

The vmstat command is used to display the types, counts, and percentages of LPAR memory. The -v flag is used to display the virtual memory statistics, including the types and counts of memory. Reference: IBM AIX v7 Administrator Specialty Study Guide (page 6-17).

Thevmstat -vcommand in AIX provides a detailed report on memory usage, including the types, counts, and percentages of different memory components in the system. This includes information on virtual memory, paging space, and various other memory statistics, making it the appropriate command for assessing LPAR memory utilization.References: IBM AIX Documentation - vmstat

After connecting to the Hardware Management Console (HMC) via SSH, thevtmenucommand allows the administrator to open a console session to an AIX virtual machine. This command provides a menu-driven interface for accessing virtual terminal sessions of managed logical partitions.References:= IBM AIX Documentation

The RES_TIMEOUT and RES_RETRY parameters in the/etc/environmentfile are related to DNS resolution.RES_TIMEOUTsets the initial timeout period for DNS queries, andRES_RETRYspecifies the number of times to retry a query before giving up. By settingRES_TIMEOUT=1andRES_RETRY=1, the system will quickly failover to the secondary name server if the primary name server does not respond within one second, thus reducing the failover time.References: IBM AIX Documentation - /etc/environment

Thecrusuer sugroups=system rootcommand limits root user access to only members of the group calledsystem. This command sets the secondary groups (sugroups) for the root user to include only thesystemgroup, thereby restricting root access to users within that group.References:= IBM AIX Security Documentation

The root account is the special user in the /etc/passwd file with the user ID (UID) of 0 and is commonly given the user name, root. It is not the user name that makes the root account so special, but the UID value of 0. This means that any user that has a UID of 0 also has the same privileges as the root user. Also, the root account is always authenticated by means of the local security files.

https://www.ibm.com/docs/en/aix/7.2?topic=passwords-root-account

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

If an administrator does not receive a console login prompt after booting a system, two potential reasons could be:

Inittab entries before the console login have not completed running. The/etc/inittabfile controls the initialization process, and if prior entries are hanging or taking a long time to complete, it can prevent the console login from appearing.

There is no console entry in the/etc/inittab. The absence of a console entry means the system does not know to start a console login process, which would prevent the login prompt from appearing. Other reasons like full file systems, rezoned disks, or overwritten rootvg could cause system issues but would not specifically prevent the console login prompt from appearing if the system is running.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

The default Maximum Transmission Unit (MTU) size of a network adapter in AIX is 1500 bytes. The MTU size determines the largest packet size that can be transmitted over the network. Setting an appropriate MTU size is essential for optimizing network performance and minimizing fragmentation.References:= IBM AIX Network Adapter Documentation

In AIX, theinstallpcommand is used for installing software packages, including RPM packages. If therpmcommand is not installed,installpcan be used to install the RPM Package Manager, allowing the user to manage RPM packages thereafter. The other options, such asinstfix,yum, andrpm, either serve different purposes or cannot be used ifrpmitself is missing.References:= IBM AIX Documentation

The commandvmstat -vis used to review the cumulative count of blocked I/Os. This command provides various virtual memory statistics, including information about blocked I/Os, which helps indiagnosing performance issues related to input/output operations.References:= IBM AIX vmstat Command 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

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

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

If a session hangs after entering the password, it is most likely due to problems with the authentication mechanism. This could be due to issues with the configuration of authentication services, network delays in authentication if using network-based authentication (such as LDAP), or misconfigurations in the PAM (Pluggable Authentication Module) settings. The other options, such as thepasswddaemon, full file systems, or network failures, are less likely to cause a login hang at this stage.References:= IBM AIX Documentation

The/etc/security/userfile contains user attributes and can be configured to disable direct root login. Specifically, therloginattribute can be set tofalsefor the root user, which would disable direct remote login for the root account.References:= IBM AIX Documentation

Configuring both ethernet adapters as IEEE 802.3ad link aggregated withsrc_dst_portmode provides network resilience and better performance. This configuration uses link aggregation to combine the two adapters into a single logical interface, which balances the traffic load and provides redundancy in case one adapter fails.References:= IBM AIX Link Aggregation 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

The System Resource Controller (SRC) is the main process that starts other background processes when the system boots. It is started through the /etc/rc.srcmstr script which is run by the init process. This script reads the /etc/inittab file and starts the necessary processes. Reference: IBM AIX v7 Administrator Specialty Study Guide.

The System Resource Controller (SRC) in AIX is started by the script/etc/rc.srcmstr. This script initializes and starts the SRC daemon (srcmstr), which manages subsystems, subsystem groups, and subsystem processes. It is a critical part of the AIX startup process, ensuring that necessary systemservices are properly managed.References: IBM AIX Documentation - System Resource Controller

When a user logs in, the system will process their .profile file which contains the PATH variable. This variable specifies the list of directories that the system will search through to locate executable files. If the PATH variable contains non-existent directories, then it will take longer for the system to process the .profile file, resulting in a slower login experience. Reference: IBM AIX v7 Administrator Specialty Study Guide (page 9-10).