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I was interviewed in Jan 2025.
Static calls are resolved at compile time, while dynamic calls are resolved at runtime.
Static calls are resolved at compile time based on the declared type of the object being called.
Dynamic calls are resolved at runtime based on the actual type of the object being called.
Static calls are faster but less flexible, while dynamic calls are slower but more flexible.
Example: In a static call, the method to be called is det...
Control over job execution can be achieved through job scheduling, monitoring, and automation.
Use job scheduling tools like Control-M or CA Workload Automation to manage job execution.
Monitor job progress and status using tools like IBM Tivoli Monitoring or Nagios.
Automate job execution and error handling with scripts or custom programs.
Implement job dependencies to ensure proper sequencing and execution.
Set up alerts
A cursor in databases is a pointer that allows for traversal and manipulation of query results.
A cursor is used to retrieve and process individual rows returned by a query.
It allows for sequential access to query results, enabling operations like fetching, updating, and deleting rows.
Cursors are commonly used in programming languages like SQL to work with result sets.
For example, in a banking application, a cursor can ...
Null variables in COBOL DB2 programs can be handled using NULL indicators and COALESCE function.
Use NULL indicators to check if a variable is null before processing it.
Use COALESCE function to replace null values with a default value.
Handle null variables carefully to avoid runtime errors.
The waterfall model is a linear sequential software development process where progress flows in one direction like a waterfall.
Involves distinct phases such as requirements, design, implementation, testing, and maintenance.
Each phase must be completed before moving on to the next phase.
Changes are difficult to implement once a phase is completed.
Example: Traditional software development approach where requirements are ...
Agile framework is a project management approach that emphasizes flexibility, collaboration, and incremental development.
Agile framework involves breaking down projects into smaller tasks called sprints
It promotes frequent communication and collaboration among team members
Allows for flexibility and adaptability to changes in requirements
Examples of Agile frameworks include Scrum, Kanban, and Extreme Programming
Mainframe utilities are software programs used for various tasks like data management, job scheduling, and system maintenance.
IEFBR14 - used for creating empty datasets
IEBCOPY - used for copying datasets
IEBGENER - used for generating datasets
IDCAMS - used for defining and managing VSAM datasets
DFSORT - used for sorting and merging datasets
Comp is a binary data type with fixed length, while Comp3 is a packed decimal data type with variable length.
Comp is binary and fixed length, while Comp3 is packed decimal and variable length
Comp stores data in binary format, while Comp3 stores data in packed decimal format
Comp uses 4 bytes for each field, while Comp3 uses variable length depending on the precision required
Example: Comp field with value 1234 will be st...
My salary expectation is based on my experience, skills, and the market rate for Mainframe Developers.
Consider my years of experience in Mainframe development
Research the average salary for Mainframe Developers in the current market
Factor in the location and size of the company
Seeking new challenges and opportunities for growth.
Looking for a more challenging role that allows me to further develop my skills
Interested in exploring new technologies and methodologies
Seeking a more supportive and collaborative work environment
Want to take on more responsibility and leadership opportunities
Abend SOC4 is a system completion code indicating a protection exception error in a mainframe program.
Check for invalid data or address in the program
Review the program logic for any potential issues
Ensure proper handling of data and memory allocation
Use debugging tools like IPCS to analyze the error
I applied via Naukri.com and was interviewed in Apr 2024. There was 1 interview round.
Index is the position of an element in an array, while subscript is the variable used to access elements in an array.
Index is a fixed value that represents the position of an element in an array.
Subscript is a variable that is used to access elements in an array.
Example: arr[2] - '2' is the index, while '2' is the subscript.
SPUFI stands for SQL Processing Using File Input. It is a tool used to execute SQL queries in DB2 databases.
SPUFI is a menu-driven tool provided by IBM for executing SQL queries in DB2 databases.
It allows users to interactively execute SQL queries and view the results.
SPUFI can be used to test SQL statements before embedding them in application programs.
It is commonly used by developers and database administrators for ...
Infosys interview questions for designations
I applied via Walk-in and was interviewed in Feb 2024. There was 1 interview round.
I am using Agile methodology for software development.
Agile methodology focuses on iterative development and collaboration between cross-functional teams.
It emphasizes adaptability to changes in requirements and continuous improvement.
Examples of Agile practices include Scrum, Kanban, and Extreme Programming (XP).
Get interview-ready with Top Infosys Interview Questions
Aptitude will be easy
I applied via Naukri.com and was interviewed in Dec 2021. There were 3 interview rounds.
comp and comp3 are data types used in mainframe programming.
comp is a binary data type that uses one byte for each digit.
comp3 is a packed decimal data type that uses half a byte for each digit.
comp3 is more space-efficient but requires additional processing for arithmetic operations.
comp3 can store both positive and negative numbers, while comp can only store positive numbers.
I applied via Naukri.com and was interviewed before Feb 2021. There were 2 interview rounds.
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