Top IBM AIX Interview Questions (2024)
What is the use of IBM AIX?
What is Matrix-Multiply Assist (MMA) in IBM AIX?
What is the use of OpenBLAS library in IBM AIX?
What are the different levels provided by OpenBLAS in IBM AIX?
How to check the performance of MMA in IBM AIX?
What is IBM LPAR in AIX?
How can you set up Db2 on IBM AIX and load data into it?
What is H2O Driverless AI on IBM AIX?
What is Mojo pipeline in IBM AIX?
How do we run the IBM AIX MOJO scoring pipelines?
What is IaC in IBM AIX?
What is Ansible in IBM AIX?
What could Ansible be used for IBM Power Systems and AIX environments?
What is the difference between LPAR and Wpar in IBM AIX?
How to mount a file system in IBM AIX?
How to see IBM AIX LPAR details and statistics?
What is LVM in IBM AIX?
What is volume Group in IBM AIX?
What is VIO in IBM AIX?
Q: What is the use of IBM AIX?
Ans:
IBM AIX has a wide set of security options, including dynamic secure tunnel authentication and Kerberos V5 network authentication, and is often used for enterprise servers. The system administrator of AIX can allocate different workloads different amounts of memory, CPU, and disk access.
Q: What is Matrix-Multiply Assist (MMA) in IBM AIX?
Ans:
The Matrix-Multiply Assist (MMA) in an IBM Power10 processor-based system offers the computing power and data bandwidth needed to manage the demanding workloads for machine learning (ML) and AI inferencing. It makes perfect sense to implement numerical linear algebra operations using this feature.
Q: What is the use of OpenBLAS library in IBM AIX?
Ans:
The OpenBLAS library is a collection of BLAS (Basic Linear Algebra Subroutines) routines that offer matrix and vector linear algebra functions. Dynamic linking is supported by and operates on IBM z14 or newer.
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Q: What are the different levels provided by OpenBLAS in IBM AIX?
Ans:
OpenBLAS routines are classified into three types:
- Vector-only operations, such as vector-vector addition, are performed by BLAS Level 1 routines.
- Matrix-vector operations, such as matrix-vector multiplication, are performed using BLAS Level 2 routines.
- BLAS Level 3 includes matrix-matrix operations like matrix multiplication.
Q: How to check the performance of MMA in IBM AIX?
Ans:
The performance of matrix multiplication was monitor and measured for various matrix sizes and various precision data types using the GEMM benchmark, which is available in the OpenBLAS repository.
Q: What is IBM LPAR in AIX?
Ans:
IBM offers AIX as a complete virtualization solution along with its Logical Partition (LPAR) virtual machine technology. A subset of the processor hardware designed to support an operating system is known as an LPAR. An LPAR functions as an independent system and has resources (processors, memory, and input/output devices).
Q: How can you set up Db2 on IBM AIX and load data into it?
Ans:
- The test employee data will be kept in the IBM Db2 database, and will be retrieved using a JDBC connection.
- On IBM Power system's AIX LPAR, download and install Db2.
- Connect to db2.
db2 connect to <database_name> - For project's data, first create Db2 tables, and then load the data.
# db2start
# db2 create database testdb
# db2 connect to testdb
# db2 drop table EMPLOYEE_DATA
# db2 "CREATE TABLE EMPLOYEE_DATA (EMPLOYEEID VARCHAR(25), NAME VARCHAR(30), ROLE VARCHAR(4))"
# db2 import from employee_data.csv of del replace into EMPLOYEE_DATA
# db2 "List Tables"
Q: What is H2O Driverless AI on IBM AIX?
Ans:
H2O Driverless AI is a platform for autonomous machine learning that uses artificial intelligence (AI). Among the most challenging data science and machine learning activities, including feature engineering, model validation, model tuning, model selection, and model deployment, are automated by driverless AI.
Running H2O Driverless AI on IBM Power Systems, which can handle the demanding data processing and memory needs of workloads, maximizes its performance. Driverless technology automates model validation and tweaking while removing the need for time-consuming, expensive feature engineering up front.
Q: What is Mojo pipeline in IBM AIX?
Ans:
The scoring pipeline is used to evaluate or forecast data when new test data is provided. There are two types of scoring pipelines.
- A Model Object Optimized (MOJO) Scoring Pipeline is the first scoring pipeline. It is a stand-alone, low-latency model object that is made to be easily embeddable in production systems. The MOJO Scoring Pipeline is a real-time scoring engine that can be installed in any Java environment.
- The second scoring pipeline is a Python Scoring Pipeline, which uses the most recent Driverless AI modules and has a large Python code footprint to support the execution of customized scoring recipes. Python and R wrappers are used in the H2O MOJO C++ scoring pipeline and C++ scoring runtime.
Q: How do we run the IBM AIX MOJO scoring pipelines?
Ans:
- The MOJO ZIP files should be extracted into their own directories.
- Locate the
db2jcc4.jarfile in (jdbc/jdbc sqlj/db2jcc4.jar:/jdbc). - Compile and modify the test below.
# javac -cp mojo-pipeline/mojo2-runtime.jar test.java- Modify the MOJO script, then execute it.
- Examine the results to identify the MOJO pipelines with the overall accuracy, processing time, etc. for your data.
// Load H2O Mojo Pipeline Model
MojoPipeline mojoModel = MojoPipeline.loadFrom(args[0]);
//Load the JDBC driver
Class.forName("com.ibm.db2.jcc.DB2Driver");
//Provide Database url
dburl = "jdbc:db2://<ipaddress>:<port>/<database>";
user = "dbusername";
password = "dbpwd";
connection = DriverManager.getConnection (dburl, user, password);
// Create a query
query = "select * from EMPLOYEE_DATA";
//Exceute query
result = statement.executeQuery( query );
// iterate the result set to get the table data
for ()
{
MojoFrameBuilder mojoFrameBuilder = mojoModel.getInputFrameBuilder();
MojoRowBuilder empRow = mojoFrameBuilder.getMojoRowBuilder();
empRow.setValue("EMPLOYEEID", result.getString(1));
empRow.setValue("NAME",result.getString(2));
empRow.setValue("ROLE", result.getString(3));
mojoFrameBuilder.addRow(empRow);
// Create a frame
final MojoFrame empMojoframe = mojoFrameBuilder.toMojoFrame();
// Transform employee data frame using MOJO pipeline
final MojoFrame outputframe = mojoModel.transform(empMojoframe);
// write outputframe in CSV using CSVWriter
}
Q: What is IaC in IBM AIX?
Ans:
In contrast to actual hardware configuration or interactive configuration tools, infrastructure as code (IaC) is a way of managing and deploying computer data centres through configuration files. IaC can be used with a variety of hardware and operating systems.
Without the support of system administrators, application teams using IaC can provision LPARs, deploy applications, and manage LPARs on their own. Unlike the conventional LPAR deployment process, IaC allows applications to be deployed in a matter of minutes as compared to days.
Q: What is Ansible in IBM AIX?
Ans:
Ansible is an IaC tool that helps IBM Power Systems clients install applications more quickly. Ansible is an open source community project created to assist businesses with automating application deployment, configuration management, and provisioning. To indicate the required state for our infrastructure, users can write playbooks in Ansible (specified in the YAML configuration language), and the software will subsequently take care of provisioning.
Q: What could Ansible be used for IBM Power Systems and AIX environments?
Ans:
AIX and IBM Power Systems both support Ansible. This supports in the uniform integration of IaC with diverse infrastructure. Ansible can be used in the following scenarios on IBM Power Systems and AIX:
- Create LPARs
- Tuning after AIX installation
- Apply application deployment and maintain AIX systems health.
- Utilize Ansible to patch AIX.
- Perform any ad hoc tasks on a set of LPARs using Ansible.
Q: What is the difference between LPAR and Wpar in IBM AIX?
Ans:
Same levels of isolation are offered by workload partitions (WPARs), but without the additional overhead of the complete system image. An LPAR needs a specific amount of physical resources and its own operating system image. Many of these resources can be virtualized, but some physical resources still need to be allocated to the system.
Q: How to mount a file system in IBM AIX?
Ans:
The command below will mount the file system /dev/fls32 on the /test
directory:
mount /dev/fls32 /test
mount command to see the currently mounted file system.
Q: How to see IBM AIX LPAR details and statistics?
Ans:
The lparstat command generates a report with LPAR information and utilization data.
This provide the current LPAR-related parameters and Hypervisor information, and also LPAR used
statistics. An interval mechanism retrieves a set number of reports at regular intervals.
Q: What is LVM in IBM AIX?
Ans:
The logical volume manager (LVM) software gives users comprehensive control over all of the disks and file systems. LVM can also migrate data at a single logical volume, a physical volume (DDM), or the whole contents of a volume group.
Q: What is volume Group in IBM AIX?
Ans:
A volume group is a grouping of 1 to 32 physical volumes of various sizes and sorts. A large volume group can have between 1 and 128 physical volumes. There can be up to 1024 physical volumes in a scalable volume group. Per system, a physical volume can belong to just one volume group; there can be up to 255 active volume groups.
Q: What is VIO in IBM AIX?
Ans:
IBM's Virtual I/O (VIO) server is a virtualization technology. A Virtual I/O server is a logical partition (LPAR) that runs a reduced-feature version of the AIX operating system. Virtual I/O servers enable Advanced Power Virtualization (APV), which allows virtual I/O clients to share physical I/O resources.