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

Define where and its usage?

1008

Explain paging concept in memory?

1017

What is downtime and what might be the reason?

1109

How long have you been working on mainframes?

971

Why are you looking for a change?

977

What is the worst thing that you’ve seen on a day?

957

Differentiate between hdam and the hidam databases?

1044

Define the necessity of run stats among the environment test?

986

Have you caused any huge mistakes for the bank?

941

What do you know about jcl?

1141

Why did you choose to work with ibm mainframe cobol programming?

1107

What are the divisions in a cobol program? Which one is the mandatory division among them?

1 1610

What are the divisions in a cobol program?

1 2074

What is the figurative constant in cobol?

1 1729

Are you comfortable in cobol or jcl?

1049

Un-Answered Questions { IBM MainFrame }

What is mainframe application testing?

1055

What is netezza database?

1028

what is use of dcb parameter in dd statement?

1306

What is the place for VSAM KSDS?

1104

Explain the maximum number of pcbs allowed in a psb?

3619

For rewrite, why is it mandatory that file needs to be opened?

1109

How to create backup table in db2?

1091

Explain how can the attributes of one sms dataset be copied to another dataset?

1215

write a jcl to execute a job by 7:00 am on jan 20,1986?

1114

Explain the purpose of the dd keylen parameter?

1169

Which Search verb is equivalent to PERFORM…VARYING?

1043

What is db2 bind process?

1240

When the job statement is used?

975

Is db2 a mainframe?

1043

What is db2 look?

1025

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