C9010-250 Latest Exam Braindumps
Question 7: An existing IBM customer explains they cannot consider POWER8 because they have a smallapplication that requires AIX 5.2.
Which of the following capabilities will allow that application to run on a POWER8 server?
A. Little Endian support will allow AIX 5.2 to run on any POWER8 server.
B. Versioned Workload Partitions (WPARs) for AIX 7.1 EE can allow workloads dependent on AIX 5.2
to run on POWER8.
C. Logical Partitions (LPARs) enable different versions of AIX to run simultaneously on one POWER8
system.
D. AIX binary compatibility allows applications created on earlier releases of AIX to run unchanged
and without recompilation on POWER8.
Correct Answer: A
Explanation:
Support for little endian mode in the POWER8 processor enables a new generation of applications.
While I plan to devote future blog entries to this topic, let me take a moment to address some basic
facts about the technology. First, the traditional POWER operating systems (AIX, and IBM i) are big
endian and will continue to run as such on POWER8 and future systems. Second, Linux operating
systems over time will be migrating from being big endian to little endian in an organized way that by
no means compromises the support cycles for their existing releases. Third, as little endian operating
systems come to market, a new little endian application ecosystem will grow. Given that most
applications today support one or more little endian operating systems (Windows or x86 Linux) and
at least one big endian operating system (Linux on Power, AIX, or z/OS), this ecosystem should grow
quickly. Finally, little endian mode on POWER8 is not a magic bullet: compiled x86 Linux applications
will still require a recompile at a minimum because the x86 and Power instruction set architectures
are still different. With this new support, Power will simplify on step in the porting process for new
applications, but to develop the whole ecosystem will take time.
Reference: https://www.ibm.com/developerworks/community/blogs/fe313521-2e95-46f2817d-
44a4f27eba32/entry/power8_propels_power_systems_into_the_future?lang=en
