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

IBM MainFrame (5234)
IBM AS400 (1355)
IBM PL/1 (31)

MainFrame Interview Questions

Questions Answers Views Company eMail

What is the COMMAREA(communications area)?

2 11565

Mention the 5 fields available in the symbolic map for every ?NAMED? field in the DFHMDI macro? Give a brief description of these fields (Not exceeding a line).

IBM,

2 13750

What is the function of the LOAD command?

IBM,

1 5337

What are the differences between an EXEC CICS XCTL and an EXEC CICS LINK command.

1 9586

What is the difference between START and XCTL ?

IBM,

3 8183

What is the meaning of BMS length of field = 0?

IBM,

1 9097

How and where is the TWA size set? .

IBM,

1 12178

What is the difference between LINK and XCTL ?

IBM,

1 7756

What is the EIB parameter and the CICS command used to implement Pseudo-Conversational technique using single PCT ? Single PPT entry?

IBM,

1 7547

Name some common CICS service programs and explain their usage?

IBM,

1 6208

What is the difference between EXEC CICS HANDLE CONDTION and an EXEC CICS IGNORE command?

IBM, TCS,

2 9110

Explain floating maps with illustration.

IBM,

1 4754

What is the difference between a RETURN with TRANSID and XCTL ?For example prog. A is issuing REUTRN with TRANSID to prog B. Prog A. is issuing XCTL to prog B?

3 29343

What is an AEY9 abend ?

IBM, Xansa,

4 25346

How do you fire a batch job from a CICS transaction ?

TCS,

2 10761

Un-Answered Questions { MainFrame }

What are the rules of the move verb?

1325

Explain the difference between null compression and default compression?

999

Comment whether the cursor is closed during commit or not.

1171

) what is the difference between AID and HANDLE AID?

2203

can any one exaplin about Decision Tables in test region with good example

2856

What is the cobol picture clause of the db2 data types date, time, timestamp?

1131

How to receive data passed through jcl parm parameter in a natural program? How data definition is defined in the program?

1174

How can unused space allocation be returned to the system when a dataset is closed?

1571

Differentiate between PCT and FCT.

1239

What is null value in db2?

1080

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?

1171

can a join logical file be updated?

1089

Explain the processing modes available in ims db?

3678

What is length is cobol?

1164

what is cab?

1228

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