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's the biggest disadvantage of using a VSAM dataset?

Anjana, CTS, DSRC, IBM,

8 20399

what's the device independent method to indicate where a Record is Stored?

1 5760

How many times secondary space allocated?

5 10869

what is the RRN for the first record in RRDS?

2 12132

what is a Base Cluster?

HSBC, TCS,

3 10946

If FSPC(100 10 is specified does it mean that both the control interval and control area will be left empty because 100 % of both CI and ca are specified to be empty?

DSRC,

1 8377

What is a Generation Data Group (GDG)?

2 10436

How is a GDG base created?

5 26802

What is model dataset label(Model DSCB)?

1 23849

How are GDGs concatenated?

1 14812

How is a new GDG coded?

2 10185

When should DISP=MOD is used?

TCS,

6 47141

How is a dataset passed from one step to another?

DELL,

2 16349

How are datasets concatenated?

CitiGroup,

3 14220

What is the difference between the JOBLIB and the STEPLIB statements?

3 38235

Un-Answered Questions { IBM MainFrame }

What are s0c1, s0c4, s0c5, s0c7 and socb?

1170

how do we prepare test data using file-aid tool?

2544

What is a bind in db2?

1039

In COBOL, what is the different between index and subscript?

1243

What is mainframe testing?

1101

What is db2 stogroup?

1156

What guidelines should be followed to write a structured cobol prgm?

1146

How does jcl act on a cobol code?

1180

What is cloudant database?

1094

how do you round the addition or subtraction of two numbers in assembler? what does the following code do? change process tool(code changes from dev to prd) the changes made to your code should be effected in live. How the process takes place. That is how can you move the code changes from development to production?

1118

Explain the primary significance of intra-partition and extra-partition tdqs ?

1070

What is the pic clause for the any bll cell type of data fields?

1063

how to access data held on the jes spool?

1058

What is the difference between pct and fct?

1214

What is data trace system 2.0 used for?

5639

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