IBM MainFrame Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

COBOL (1072)
JCL (1031)
CICS (755)
DB2 (1122)

IMS (143)
IDMS (107)
Natural (81)
ADABAS (26)

REXX (60)
Assembler (68)
CLIST (6)
QMF (32)

MVS (25)
OS390 (10)
OS 2 (7)
VSAM (319)

IBM MainFrame Interview Questions

Questions Answers Views Company eMail

What is the difference between COMP & COMP-3 ?

2 30763

What was removed from COBOL in the COBOL II implementation?

2087

What will happen if you code GO BACK instead of STOP RUN in a stand-alone COBOL program i.e. a program which is not calling any other program ?

3 15495

How many sections are there in data division?.

Amdocs, TCS,

10 27952

What is the difference between NEXT SENTENCE and CONTINUE?

Mphasis,

2 14103

Can you REWRITE a record in an ESDS file? Can you DELETE a record from it?

ABC, IBM, Mphasis, Wipro,

6 26675

What is the maximum length of a field you can define using COMP-3?

Complex System, Infosys,

4 37233

How do you define a variable of COMP-1? COMP-2?

3 17979

What is the difference between comp and comp-3 usage? Explain other COBOL usage?s.

IBM, Xansa,

3 37125

Explain the difference between an internal and an external sort, the pros and cons, internal sort syntax etc.

3 13344

What do you feel makes a good program?

2 6189

What are the different data types available in COBOL?

4 11201

Can JUSTIFIED be used for all the data types?

3 10664

What is the linkage section?

4 9740

What is Static and Dynamic linking ?

3 11177

Un-Answered Questions { IBM MainFrame }

What is program reentrance?

1099

How do you define a variable of comp-1 and comp-2?

1138

What is a cursor in programming?

1016

State the uses of syspring, sysin, sort fields, sum fields and dummy.

1027

What are the different types of base tables?

1029

How do I connect my db2 database to ibm?

988

in my project..TEST is db2 8.1 version In PROD it is 7.1 if i do REORG in TEST.. can I use the same REORG jcl with out modification in PROD region (this is DB2 8.1 )? if not, what modification i need to do in my REORG control card?

2024

What is the function of the dd avgrec keyword in sms datasets?

1288

What is the difference between Global and External Variables?

1297

In job processing, what happens in conversion stage?

1147

what are the statements that are not valid to be included in an include statement?

1332

what happens if parmparameter passes zero bytes to the program

2084

Can we change the password using ALTER? anyone tried and changed?

1951

What is psb?

982

Explain host variables?

946

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