Cognizant Junior Software Engineer Interview Questions, Process, and Tips

It's kind a simple can pass the exam with basic knowledge in aptitude.

Q1. Write a program to find addition of two numbers
Ans. 
A program to find the addition of two numbers
• Declare two variables to store the numbers

• Take input from user or use predefined values

• Add the two numbers together

• Print the result
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Q2. What is the main concepts on Java
Ans. 
Main concepts in Java include object-oriented programming, inheritance, polymorphism, encapsulation, and abstraction.
• Object-oriented programming: Java is an object-oriented language where everything is treated as an object.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability of an object to take on many forms.

• Encapsulation: Bundling of data and methods that operate on ...read more
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Q3. Explain package
Ans. 
A package is a way to organize related classes and interfaces in Java.
• Packages help in organizing code and avoiding naming conflicts

• Packages can be nested within each other

• Packages are declared using the 'package' keyword at the beginning of a Java file
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Q1. Are you willing to relocate
Ans. 
Yes, I am willing to relocate for the right opportunity.
• I am open to relocating for a promising career opportunity

• I have relocated for previous job positions and am comfortable with the process

• I understand the benefits of relocating for career growth and development
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First Round is Coding Round

Q1. Will you relocate to PAN India?
Ans. 
Yes, I am open to relocating to any location within India for the right opportunity.
• I am open to relocating to any location within India for the right opportunity.

• I am flexible and willing to explore new cities for career growth.

• I believe in adapting to new environments and challenges.

• I am excited about the prospect of working in different parts of India.
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Q2. Are you ok with Day or Night shifts?
Ans. 
I am open to both Day and Night shifts depending on the job requirements.
• I am flexible with my work schedule and can adapt to different shifts.

• I understand the importance of round-the-clock support in software development.

• I have previous experience working night shifts during project deadlines.
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Basic aptitude round

Q1. What are data types?
Ans. 
Data types are classifications of data items that determine the possible values and operations that can be performed on them.
• Data types define the type of data that a variable can hold, such as integers, strings, or booleans.

• Examples of data types include int (integer), float (floating point number), char (character), and bool (boolean).

• Data types also determine the size of the variable in memory and the range of value
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Q2. How to reverse an array of numbers?
Ans. 
To reverse an array of numbers, iterate through the array and swap elements from start to end.
• Iterate through the array using two pointers, one starting from the beginning and the other from the end.

• Swap elements at the two pointers and move the pointers towards the center until they meet.

• Example: Input array [1, 2, 3, 4, 5], after reversing becomes [5, 4, 3, 2, 1].
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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
Ans. 
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
Ans. 
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 .
Ans. 
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
Ans. 
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
Ans. 
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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