Add office photos
i
TCS
Compare
Filter interviews by
TCS Mainframe Developer Interview Questions, Process, and Tips
Top TCS Mainframe Developer Interview Questions and Answers
- Q1. How will you use NULL indicator in your program? How will you use VSAM file in program?SOC7 abend reason and resolution.
- Q2. How will you use cursor in COBOL program? What is the difference between cursor and SQL? When will you use JOINKEYS ?
- Q3. What are the different levels used in cobol
TCS Mainframe Developer Interview Experiences
11 interviews found
Anonymous
I applied via Naukri.com and was interviewed in May 2024. There was 1 interview round.
(3 Questions)
- Q1. What are the different levels used in cobol
- Ans.
COBOL has different levels such as level 01, level 77, etc. for defining data structures and variables.
Level 01 is used for defining record structures.
Level 77 is used for defining elementary data items.
Level 88 is used for defining condition names.
Level 66 is used for renaming data items.
Level 88 is used for defining condition names.
- Q2. What is the difference between rename and redefine
- Ans.
Rename is used to change the name of a data item while redefine is used to change the structure of a data item.
Rename is used to change the name of a data item without changing its structure
Redefine is used to change the structure of a data item without changing its name
Example: In COBOL, renaming a data item involves using the RENAMES clause, while redefining a data item involves using the REDEFINES clause
- Q3. Which utility is used for creating GDG
- Ans.
IDCAMS utility is used for creating GDG (Generation Data Group)
IDCAMS utility is used to define, alter, and delete GDGs
Syntax for defining GDG: DEFINE GDG(NAME(dataset.name) LIMIT(n) SCRATCH)
Example: DEFINE GDG(NAME(TEST.GDG) LIMIT(5) SCRATCH)
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
(3 Questions)
- Q1. DB2 compilation process
- Q2. Static and Non-static
- Q3. GDG version and its attributes
- Ans.
GDG (Generation Data Group) version and its attributes are used in mainframe development to manage versions of datasets.
GDG is used to manage versions of datasets in mainframe environment.
Attributes of GDG include generation number, creation date, expiration date, and limit.
Example: MYDATASET.GDG(+1) refers to the latest version of MYDATASET.
What people are saying about TCS
Selected
I applied via Naukri.com and was interviewed in Mar 2024. There were 2 interview rounds.
(1 Question)
- Q1. Questios on JCL abend codes
(1 Question)
- Q1. Project description and daily activities
TCS interview questions for designations
Selected
I applied via LinkedIn and was interviewed in Feb 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Difference 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 declared type of the object.
Dynamic call is determined at runtime based on the actual type of the object.
Static call is faster but less flexible, while dynamic call is slower but more flexible.
- Q2. Sort command to search a string
- Ans.
The SORT command in Mainframe can be used to search for a string.
Use the SORT command with the FIND keyword followed by the string you want to search for.
Specify the input file and output file for the search operation.
Example: SORT FILE(INPUT) USING(CTL1) COPY FIND FIRST 'SEARCHSTRING' OUTPUT FILE(OUTPUT)
(2 Questions)
- Q1. It was good and formal
- Q2. It was formal and good
Skills evaluated in this interview
Get interview-ready with Top TCS Interview Questions
I applied via Company Website and was interviewed in Dec 2023. There was 1 interview round.
(2 Questions)
- Q1. Questions on sort utility
- Q2. Job card and parameters
Interview Preparation Tips
srinath sri
Selected
I applied via LinkedIn and was interviewed before Jun 2023. There were 2 interview rounds.
(3 Questions)
- Q1. Mainframe Modernization Process
- Ans.
Mainframe modernization process involves updating legacy systems to newer technologies while preserving critical business logic.
Assess current mainframe environment and identify areas for modernization
Develop a modernization strategy, including choosing the right technology stack
Migrate data and applications to the new platform while ensuring minimal disruption to business operations
Test the modernized system thoroughl...
- Q2. Temporary files in JCL
- Ans.
Temporary files in JCL are used to store intermediate data during job execution.
Temporary files are defined using DD statements in JCL.
They are typically used to store data that needs to be processed or manipulated before being written to permanent files.
Temporary files are often allocated with DISP=(MOD,DELETE) to ensure they are deleted after job completion.
- Q3. Sort JCL utilities and scenarios
- Ans.
Sort JCL utilities are used to sort data in Mainframe environment based on specific criteria.
Use SORT utility in JCL to sort data in ascending or descending order
Specify the key fields to sort on in the SORT statement
Use INCLUDE and OMIT statements to filter data before sorting
Use JOINKEYS utility to merge two or more sorted datasets based on key fields
(2 Questions)
- Q1. What is your expectation
- Q2. Notice period, Why change, Expected CTC
Skills evaluated in this interview
I applied via LinkedIn and was interviewed in Oct 2022. There were 3 interview rounds.
(1 Question)
- Q1. 1. Tell me about yourself? 2. Rank yourself from 1 to 5 on JCl, COBOL, DB2, CICS( what you have mentioned as knowledge you known) Actual technical questions: 1.how to find the error without executing the ...
(1 Question)
- Q1. Having discussion on 1.About preferred work location 2.Salary expectation
Interview Preparation Tips
Selected
I applied via Naukri.com and was interviewed before Oct 2023. There were 2 interview rounds.
(1 Question)
- Q1. Tell me about Cobol basics.
- Ans.
COBOL is a high-level programming language used for business applications on mainframe computers.
COBOL stands for Common Business-Oriented Language.
It was designed in 1959 by CODASYL and is primarily used in finance, insurance, and government sectors.
COBOL programs are divided into four divisions: Identification, Environment, Data, and Procedure.
It uses English-like syntax and is known for its readability and self-docu
(1 Question)
- Q1. Why do you want to join TCS?
Skills evaluated in this interview
I applied via LinkedIn and was interviewed before May 2023. There were 2 interview rounds.
(1 Question)
- Q1. Basic syntax of JCL, common job abends. Basic DB2 queries
(1 Question)
- Q1. Notice period, All relevant documents available?
I applied via Naukri.com and was interviewed in Sep 2021. There was 1 interview round.
Interview Questionnaire
3 Questions
- Q1. How will you use NULL indicator in your program? How will you use VSAM file in program?SOC7 abend reason and resolution.
- Ans.
Explaining the use of NULL indicator and VSAM file in Mainframe development and resolving SOC7 abend.
NULL indicator is used to indicate the absence of data in a field
VSAM file is used to store and retrieve data in a program
SOC7 abend occurs due to invalid numeric data and can be resolved by identifying and correcting the error
NULL indicator can be checked using IF statement or COBOL verb SET
VSAM file can be accessed us
- Q2. How will you use cursor in COBOL program? What is the difference between cursor and SQL? When will you use JOINKEYS ?
- Ans.
Using cursor in COBOL program, difference between cursor and SQL, and when to use JOINKEYS.
Cursor is used to fetch data from a database table in COBOL program.
SQL is a language used to interact with databases, while cursor is a mechanism to fetch data from a database table.
JOINKEYS is used to join two or more files based on a common key.
JOINKEYS is used when the files are too large to fit in memory.
JOINKEYS is used whe...
- Q3. SORT operations in JCL
- Ans.
SORT operations in JCL
SORT is used to arrange data in a specific order
SORT can be used to remove duplicates from data
SORT can be used to merge multiple files into one
SORT can be used to select specific records based on a condition
Interview Preparation Tips
Skills evaluated in this interview
TCS Interview FAQs
Some of the top questions asked at the TCS Mainframe Developer interview -
Tell us how to improve this page.
TCS Interviews By Designations
- TCS System Engineer Interview Questions
- TCS Software Developer Interview Questions
- TCS Software Engineer Interview Questions
- TCS Assistant System Engineer Interview Questions
- TCS Assistant System Engineer Trainee Interview Questions
- TCS IT Analyst Interview Questions
- TCS Ninja Interview Questions
- TCS Java Developer Interview Questions
- Show more
Interview Questions for Popular Designations
- Senior Mainframe Developer Interview Questions
- Mainframe Operator Interview Questions
- Cobol Developer Interview Questions
- DOT NET Developer Interview Questions
- Senior Research Analyst Interview Questions
- Embedded Software Engineer Interview Questions
- Signal Processing Interview Questions
- Market Research Analyst Interview Questions
- Show more
TCS Mainframe Developer Interview Process
based on 10 interviews
2 Interview rounds
- Technical Round
- HR Round
Mainframe Developer Interview Questions from Similar Companies
Fast track your campus placements
TCS Mainframe Developer Reviews and Ratings
based on 73 reviews
Rating in categories
|
System Engineer
1.1L
salaries
|  ₹1 L/yr - ₹9 L/yr |
|
IT Analyst
67.5k
salaries
| ₹5.1 L/yr - ₹16 L/yr |
|
AST Consultant
51.3k
salaries
| ₹8 L/yr - ₹25 L/yr |
|
Assistant System Engineer
29.9k
salaries
| ₹2.2 L/yr - ₹5.6 L/yr |
|
Associate Consultant
29k
salaries
| ₹9 L/yr - ₹32 L/yr |
Amazon
Wipro
Infosys
Accenture
- Home >
- Interviews >
- TCS Interview Questions >
- TCS Mainframe Developer Interview Questions
