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Wipro Mainframe Programmer Interview Questions, Process, and Tips
Top Wipro Mainframe Programmer Interview Questions and Answers
- Q1. What is mainframes and what is jcl
- Q2. What's main topic in mainframes
- Q3. What is cobol and what is comp
Wipro Mainframe Programmer Interview Experiences
2 interviews found
Anonymous
Selected
I applied via AmbitionBox and was interviewed in Nov 2022. There were 3 interview rounds.
(4 Questions)
- Q1. What is mainframes and what is jcl
- Ans.
Mainframes are large computers used for critical applications. JCL is a scripting language used to control mainframe operations.
Mainframes are known for their reliability, security, and scalability.
They are used in industries such as banking, healthcare, and government.
JCL stands for Job Control Language and is used to define and execute mainframe jobs.
JCL statements include job control statements, data definition stat...
- Q2. What is cobol and what is comp
- Ans.
COBOL is a programming language used for business applications. COMP is a COBOL data type for storing numbers.
COBOL stands for Common Business Oriented Language
It was developed in the late 1950s and early 1960s
COBOL is used for developing business applications such as banking, insurance, and finance
COMP is a COBOL data type used for storing numbers in binary format
COMP can be further classified into COMP-3, which is us
- Q3. What's main topic in mainframes
- Ans.
Main topic in mainframes is processing large amounts of data with high reliability and security.
Data processing and storage
Batch processing
Transaction processing
Security and reliability
COBOL programming language
JCL (Job Control Language)
VSAM (Virtual Storage Access Method)
CICS (Customer Information Control System)
DB2 (Database Management System)
IMS (Information Management System)
- Q4. How to start program
- Ans.
To start a program, you need to compile the source code and then execute the compiled code.
Write the program code in a text editor or an IDE
Save the code with the appropriate file extension
Compile the code using a compiler or an interpreter
Execute the compiled code
Debug the program if necessary
(5 Questions)
- Q1. What is vsam and non vasam
- Ans.
VSAM stands for Virtual Storage Access Method and is a file management system used in mainframe computers.
VSAM is used to organize and access data stored on disk in a mainframe environment.
It supports both sequential and random access to data.
Non-VSAM refers to file systems that do not use VSAM, such as flat files or relational databases.
VSAM provides features like record-level locking, high performance, and efficient ...
- Q2. What is db2 and cobol
- Ans.
DB2 is a relational database management system and COBOL is a programming language used for business applications.
DB2 is used to store and manage data in a structured manner
COBOL is used to write programs for business applications
DB2 and COBOL are often used together in mainframe environments
COBOL programs can access and manipulate data stored in DB2 databases
- Q3. Db2 full form in mainframes
- Ans.
Db2 stands for Database 2, a relational database management system used in mainframes.
Db2 is used for storing and retrieving data in mainframes.
It supports SQL (Structured Query Language) for querying and manipulating data.
Db2 is known for its scalability, reliability, and security features.
It is widely used in industries such as banking, finance, and healthcare.
Db2 has various editions such as Db2 for z/OS, Db2 for Li
- Q4. Ibm full from in cobol
- Ans.
IBM Full Form in COBOL
IBM stands for International Business Machines
COBOL stands for Common Business Oriented Language
IBM is a company that produces hardware and software, including mainframes
COBOL is a programming language commonly used for business applications
IBM mainframes are often used for running COBOL programs
- Q5. What tyep of programme
Interview Preparation Tips
Skills evaluated in this interview
Mainframe Guru
Interview questions from similar companies
I applied via Job Fair and was interviewed in Sep 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Diff between static and dynamic call
- Ans.
Static call is resolved at compile time, while dynamic call is resolved at runtime.
Static call is determined at compile time based on the code structure.
Dynamic call is determined at runtime based on the actual object being referenced.
Static call is faster as it does not require runtime resolution.
Dynamic call allows for flexibility and polymorphism in programming.
Example: In Java, static method calls are resolved at c...
- Q2. Diff between index and subscript
- Ans.
Index is the position of an element in an array, while subscript is the value used to access that element.
Index starts from 0 in most programming languages.
Subscript is the value enclosed in square brackets used to access an element in an array.
Example: In array arr = [10, 20, 30], arr[1] has index 1 and subscript value 20.
(2 Questions)
- Q1. Salary discussion
- Q2. Location discussion
I applied via Naukri.com and was interviewed in Jul 2024. There was 1 interview round.
(4 Questions)
- Q1. Job statement in JCL
- Ans.
Job Control Language (JCL) is used to define and execute jobs on mainframe systems.
JCL statements are used to specify the job to be executed, including input/output files, program to be run, and other job control parameters.
Example: //JOBNAME JOB (ACCOUNT), 'DESCRIPTION',CLASS=A,MSGCLASS=X
JCL statements are written in a specific format with keywords and parameters to define the job steps and execution flow.
Example: //S
- Q2. Utility used to create a GDG.
- Ans.
IDCAMS is the utility used to create a GDG.
IDCAMS is a utility program used in z/OS to define and manage VSAM datasets, including GDGs (Generation Data Groups).
To create a GDG using IDCAMS, you would typically write a JCL job that includes IDCAMS statements to define the GDG base and generations.
Example: //STEP1 EXEC PGM=IDCAMS //SYSIN DD * DEFINE GDG(NAME(TEST.GDG) LIMIT(10) SCRATCH)
- Q3. Difference b/w COMP & COMP 3 along with scenario-based questions on this topic
- Q4. CICS related question regarding CICS transactions and its life cycle.
Interview Preparation Tips
Skills evaluated in this interview
Protya Roy
(2 Questions)
- Q1. Types of utilities in mainframe
- Ans.
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
- Q2. Differentiate between Comp vs Comp3
- Ans.
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...
(2 Questions)
- Q1. What is your salary expectation
- Ans.
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
- Q2. What you want to leave your current organisation
- Ans.
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
Skills evaluated in this interview
Selected
(3 Questions)
- Q1. All topics covered including sort
- Q2. Db2 queries like select insert, DML,DDL
- Q3. Cobol inspect statement, Cursors, Dynamic and Static calls
(1 Question)
- Q1. SQL queries , Table declarations, DML,DDL statements
(1 Question)
- Q1. About yourself, package discussion
Selected
I applied via Company Website and was interviewed in Jun 2024. There was 1 interview round.
(2 Questions)
- Q1. Explain Precompilation process
- Q2. How do you do Load and Unload Process
Shraddha Singh
(2 Questions)
- Q1. Jobs / jcls/proc
- Q2. Jobs/jcls/proc/cobol/db2/cics/mainframe technical questions
I was interviewed in Apr 2024.
(1 Question)
- Q1. 1. Asked about my current project and asked to explain the Cobol program written for that 2. Difference between Call by reference and Call by Content 3. Difference between Primary Key, Unique key and forei...
(1 Question)
- Q1. What's the use of repro
- Ans.
REPRO is a utility program used in mainframe systems to copy or replicate datasets.
Used to copy datasets from one location to another
Can be used to replicate datasets for backup purposes
Helps in transferring datasets between different systems or environments
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