Cognizant Junior Software Engineer Interview Questions, Process, and Tips

Q1. Introduction and job profile of the previous environment.
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Q2. Total experience and basics of as400 operations support questions.
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Q1. How to check source object in AS400 .
Ans. 
To check source object in AS400, use the DSPOBJD command.
• Use the DSPOBJD command followed by the library name and object name to display object details.

• The source object type should be specified as *PGM or *FILE.

• The output will include information like source file, member, and source type.
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Q2. How we run a job in as400
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Q3. What is jobq in as400
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JobQ is a job queue in AS400 that manages the execution of batch jobs.
• JobQ is used to prioritize and schedule batch jobs on AS400.

• It allows multiple jobs to be submitted and executed in a specific order.

• Jobs in the queue can be held, released, or deleted as needed.

• JobQ provides a way to manage and control the execution of batch jobs efficiently.

• Example: WRKJOBQ command is used to display the jobs in a specific job queu
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Q4. What are the types of job scheduler in as400
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There are two types of job schedulers in AS400: the native job scheduler and the advanced job scheduler.
• The native job scheduler is the default scheduler provided by AS400.

• It allows scheduling jobs based on time, date, and other criteria.

• The advanced job scheduler is a third-party tool that offers more advanced scheduling capabilities.

• It provides features like dependency management, event-based scheduling, and workload...read more
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Q1. How to download the files from as400 system .
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To download files from AS400 system, use FTP or a file transfer utility like IBM i Access Client Solutions.
• Use FTP (File Transfer Protocol) to transfer files from AS400 system to another system.

• Install and configure an FTP client on your local machine.

• Connect to the AS400 system using the FTP client.

• Navigate to the directory where the files are located on the AS400 system.

• Use the 'get' command to download the files to ...read more
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Q2. How to insert your data in as400
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To insert data in AS400, use SQL INSERT statement with appropriate table name and column values.
• Connect to AS400 database using JDBC or ODBC driver

• Construct an SQL INSERT statement with the table name and column names

• Provide the values to be inserted for each column in the VALUES clause

• Execute the INSERT statement using a prepared statement or statement object
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Q3. What are MQ's in AS400
Ans. 
MQ's in AS400 are message queues used for inter-process communication.
• MQ's in AS400 allow different programs or processes to communicate with each other by sending and receiving messages.

• They provide a reliable and asynchronous way of exchanging data between applications.

• MQ's can be used for various purposes such as sending notifications, transferring data between systems, or triggering actions based on events.

• They are...read more
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Q4. How to check the data area value in as400
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To check the data area value in AS400, you can use the DSPDTAARA command.
• Use the DSPDTAARA command followed by the library and data area name to display the value.

• You can also use the RTVDTAARA command to retrieve the value into a program variable.

• If the data area is in a different library, specify the library name before the data area name.

• Ensure that you have the necessary authority to access the data area.
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Q5. How to check the object locks and steps to make the job run.
Ans. 
To check object locks, use system tools like Process Explorer or Task Manager. To make the job run, ensure necessary dependencies are met.
• Use system tools like Process Explorer or Task Manager to check object locks

• Ensure necessary dependencies are met for the job to run smoothly
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Q6. How to make job run from one jobq to another.
Ans. 
To make a job run from one jobq to another, you can use the CHGJOBQ command in IBM i (AS/400) system.
• Use the CHGJOBQ command to change the job queue of a job

• Specify the new job queue name in the JOBQ parameter of the CHGJOBQ command

• The job will be moved to the specified job queue when it is next eligible to run
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Q7. How to submit a job in as400
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Aptitude test includes number series, profit and loss, percentage, train problems

Q1. About SQL queries and database
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Q2. About object oriented programming, pointers, arrays, linked list
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The aptitude test was quite easy.

Questions are moderated.

Q1. Introduce your self.
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Q2. The interviewer asked me about java, oops concepts and some questions from data structures and some numerical in last.
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Q1. Does platform independent in JAVA?
Ans. 
Yes, Java is platform independent due to its ability to compile code into bytecode that can run on any platform with a Java Virtual Machine (JVM).
• Java code is compiled into bytecode, which can run on any platform with a JVM.

• The JVM acts as an intermediary between the Java code and the underlying platform.

• This allows Java programs to be written once and run on any platform without modification.
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Q2. Do you Know about OOPS?
Ans. 
OOPS stands for Object-Oriented Programming System. It is a programming paradigm based on the concept of objects.
• OOPS focuses on creating objects that contain both data and methods to manipulate that data.

• Encapsulation, inheritance, and polymorphism are key principles of OOPS.

• Examples of OOPS languages include Java, C++, and Python.
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