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IBM C4040-121 : Virtualization Technical Support for IBM i -v1

C4040-121

Exam Code: C4040-121

Exam Name: Virtualization Technical Support for IBM i -v1

Updated: Sep 02, 2026

Q & A: 102 Questions and Answers

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IBM C4040-121 Exam Syllabus Topics:

SectionObjectives
IBM Power Systems Virtualization Fundamentals- PowerVM architecture overview
  • 1. Logical partitions (LPARs)
    • 2. Hypervisor concepts
      - Resource virtualization concepts
      • 1. Shared processor pools
        • 2. CPU and memory allocation
          Monitoring, Performance, and Troubleshooting- Troubleshooting virtualization issues
          • 1. VIOS connectivity problems
            • 2. LPAR startup and configuration issues
              - Performance analysis
              • 1. Workload balancing in partitions
                • 2. CPU and memory bottleneck identification
                  Networking in Virtualized IBM Power Environments- Virtual networking concepts
                  • 1. Virtual Ethernet adapters
                    • 2. Network segmentation in LPARs
                      IBM i Virtualization and System Administration- IBM i environment management
                      • 1. Work management concepts
                        • 2. System configuration on Power systems
                          - Partition administration
                          • 1. Resource tuning for IBM i partitions
                            • 2. Creating and managing LPARs
                              Virtual I/O Server (VIOS) and Storage Virtualization- Storage management
                              • 1. Disk provisioning and mapping
                                • 2. SAN integration in virtualized environments
                                  - VIOS concepts and architecture
                                  • 1. Virtual Fibre Channel adapters
                                    • 2. Virtual SCSI configuration

                                      IBM Virtualization Technical Support for IBM i -v1 Sample Questions:

                                      Question 1

                                      A customer has multiple POWERS 570 servers. The servers are controlled by multiple HMCs. The customer is installing an additional Power 770 server in this environment but will retain their existing HMCs. No updates to FSP or HMC levels have been made since installation of the POWERS servers.
                                      After reviewing the cover letters for ESP and HMC firmware levels, what updates are required to support the addition of the new server into the network?

                                      A. Update the POWERS ESPs to the most recent version available for the installed firmware release. Update the HMCs to the most recent release available.
                                      B. Update the FSP5 and HMC5 of the existing systems to the minimum level required.
                                      C. Update only the FSPs to the latest release available.
                                      D. Update only the HMCs to the latest version.


                                      Question 2

                                      An IBM i client partition has all disk resources virtualized. When the hosting IBM i partition is powered off or being restarted, users are unable to access the client partition. What changes can be made to ensure that the client system remains available without interruption?

                                      A. Copy the Network Server Storage to a second host partition and configure failover.
                                      B. Create an iSCSI initiator in the hosting partition and an iSCSI target in the client partition.
                                      C. Mirror the disks to a second host partition.
                                      D. Create the Network Server Storage in an independent ASP.


                                      Question 3

                                      An administrator is building a client IBM i partition to be used as a development environment. The client partition requires 210GB of disk space, which will be provided by the hosting IBM i LPAR.
                                      On the hosting IBM i LPARI which disk configuration will provide the best performance to the client LPAR?

                                      A. One virtual 210GB disk in a separate ASP.
                                      B. Six virtual 35GB disks across all physical disks in *SYSBAS.
                                      C. One virtual 210GB disk across all physical disks in *SYSBAS.
                                      D. Two virtual 52.5GB disks *SYSBASI and two 52.5GB disks in an iASP.


                                      Question 4

                                      A client IBM i partition, with multipath SAN disk provided by dual VIO Servers, has used most of its available storage. Extra disk storage is required.
                                      Several spare LUN5 (hdisks) are already mapped to the VIO Servers.
                                      The administrator runs identical commands on the VIO Servers to create the bridging devices to define the two new LUNs to the client partition.
                                      SST on the IBM i partition shows 4 new1 unconfigured disks.
                                      Which statement explains why4 disks appeared, instead of 2?

                                      A. Four disks will show until mirroring is started in IBM i.
                                      B. Four disks will show until configured as multipath.
                                      C. The disks were not identified as multipath on the VIO Servers.
                                      D. The LUNs were incorrectly mapped on theVIOservers.


                                      Question 5

                                      An administrator has an IBM i partition hosted by VIO Server (VIOS), and managed by an HMC.
                                      The administrator has hdisk2 through hdiskl7 assigned to a vSCSI adapter, and wants to map 2 more virtual disk units, but receives an error when trying to map the disks to the vSCSI controller.
                                      What is the cause of the error?

                                      A. The PowerVM license must be upgraded to Enterprise from Standard.
                                      B. The vSCSI adapter limit has been reached.
                                      C. The disk units are incorrectly formatted for AIX/VIOS.
                                      D. The client partition must be powered off to map virtual disks to a vSCSl controller.


                                      Solutions:

                                      Question 1
                                      Answer: B
                                      Question 2
                                      Answer: C
                                      Question 3
                                      Answer: B
                                      Question 4
                                      Answer: D
                                      Question 5
                                      Answer: B

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