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Cognizant Mainframe Developer Interview Questions and Answers
Cognizant Mainframe Developer Interview Experiences
5 interviews found
Anonymous
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
Selected
I applied via Campus Placement and was interviewed in Oct 2023. There was 1 interview round.
(1 Question)
- Q1. Interview: Self Introduction, overflow of project, role, catlg proc instream proc difference, Gdg and syntax to create Gdg, parameters of Gdg, Restart parameter, condition parameters, Ibm utilities, to re...
I applied via Naukri.com and was interviewed in Nov 2021. There was 1 interview round.
(1 Question)
- Q1. Redefine clause of COBOL
- Ans.
Redefine clause in COBOL allows a data item to be referenced by different names and formats.
Redefine clause is used to save memory space by sharing the same memory location for different data items.
It is used to define a new data item that shares the same storage area as an existing data item.
The new data item can have a different data type, length, or picture clause than the original data item.
Example: 01 EMPLOYEE-DET...
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Skills evaluated in this interview
What people are saying about Cognizant
I applied via Naukri.com and was interviewed in Jul 2021. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Utilities and related to DB2 questions
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Cognizant interview questions for designations
I applied via Naukri.com and was interviewed in Mar 2021. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Basic questions
Interview Preparation Tips
It covered all the general COBOL, jcl, db2, vsam, cics questions. The interview is basic and easy to clear for someone who knows their basics.
Interview questions from similar companies
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
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Cognizant Mainframe Developer Reviews and Ratings
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Hyderabad / Secunderabad,
Chennai
+15-10 Yrs
Not Disclosed
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