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IBM Virtualization Technical Support for AIX and Linux - v2 Sample Questions:

1. A customer wants to compare a number of models within the POWER7 family to determine which is the best fit for their requirements. What centralized source would allow them to compare availability of Capacity on Demand and supported Hot-plug functions?

A) POWER7 Press kit
B) Techline POWER7 compendium
C) Facts and Features Report
D) POWER Reference Guide

2. A production application is hosted across two Power 750 Express servers, managed by an HMC. Each machine has 16 cores and 32GB RAM. Four 8GB LPARs are defined across the two systems and only 3 LPARs are active at once. Live Partition Mobility is used to maintain availability when maintenance is required.
A test environment is being built across two Power 550 Express servers.
Each machine has 8 cores and 16GB RAM. Four 4GB LPARs will be defined across the two systems, again only 3 will be active at once. To isolate the test and production environment, the test environment is managed by two IVMs.
Two LPARs have been created on each test server. The administrator initiates a Live Partition Mobility operation to test moving LPARs between the servers.
The migrlpar command fails to migrate the 4th LPAR with the following error:
"The target managed system does not have enough available memory to create the partition."
Because the 4th LPAR was inactive, it was expected that an inactive migration would be successful.
Why would this inactive migration fail on the test environment, but succeed on the production environment?

A) The target managed system already has the maximum number of partitions.
B) IVM-managed systems reserve RAM allocations, even for inactive LPARs.
C) IVM-managed systems do not support inactive migrations.
D) Active Memory Sharing (AMS) or Active Memory Expansion (AME) is required for RAM over commitment.

3. An administrator has a Power 720 with 64GB of memory and Active Memory Expansion (AME).
An LPAR has only 10GB of memory available and an application has been sized at 15GB of memory. The administrator runs amepat to determine an efficient expansion factor. Based on the output, an expansion factor of 1.6 has been chosen.
How should this be configured in the LPAR?

A) Enter 10GB as 'desired', enter 1.6 in the Active memory expansion factor field.
B) Enter 16GB as 'desired', enter 1.6 in the Active memory expansion factor field.
C) Enter 16GB as 'desired' and modify/etc/ame.conf with AME_RATIO=1.6.
D) Enter 10GB as 'desired' and modify/etc/ame.conf with AME_RATIO=1.6.

4. When creating a new LPAR, what should be considered when setting the maximum value for memory?

A) The maximum memory value should be a multiple of the desired memory and the Logical Memory Block (LMB) to ensure minimal Hypervisor memory overhead.
B) On a given system, by default the Hypervisor reserves 2.5GB of the system memory, regardless of the maximum memory allocation for an LPAR.
C) The Hypervisor will reserve a fraction of the maximum memory value for page tables.
D) Where the maximum value exceeds 32GB, the Barrier Synchronization Register value needs to be set appropriately in the LPAR profile.

5. An LPAR was created on a POWER6 system with default processor/memory settings. It was migrated from the POWER6 system to a POWER7 system. Over time, that LPAR has been shutdown and restarted.
An administrator now needs to migrate the LPAR back to the POWER6 system, but it fails to validate.
There have been no changes in the LPAR profile, network, or in the SAN configuration.
Which action will enable the operation to complete successfully?

A) Set the processor mode to Shared on the source profile and restart the LPAR.
B) Set the processor mode to default on the source profile and restart the LPAR.
C) Set the processor mode to Dedicated on the source profile and restart the LPAR.
D) Set the processor mode to POWER6 on the source profile and restart the LPAR.

Solutions: