Mainframe JCL Interview Questions

9/07/2009 No Comment

JCL MCQ, Mainframe JCL Multiple Questions Test Preparation.

1) What is the function of DD DISP parameter? 
(1) Tells the system what to do with the dataset following normal termination of the step
(2) Describes the status of the dataset
(3) Tells the system what to do with the dataset following abnormal termination of the step
(4) All of the above

2) How is the record format of an output dataset specified?
(1) RECORG parameter
(2) STORCLAS parameter
(3) RECFM parameter
(4) None of the above

3) What is the purpose of DD * statement in JCL?

(1) Begins an input data prompt at the system console
(2) Begins an in-stream dataset
(3) Marks the end of a command stream
(4) Includes all datasets within a naming pattern

4) A DD statement has 2 types of parameters. Name them ?(1) Positional, Keyword
(2) Keyword, Control
(3) Dynamic, Static
(4) Named, Dynamic

5) What is the function of JOB statement in JCL ?

(1) Marks the end of a job
(2) Marks the beginning of an instream procedure
(3) Marks the beginning of a job & assigns a name to the job
(4) Assigns an execution priority to a job

6) How can a job send a status message to a TSO user at the completion of a job ?(

(4) USER

7) What is the function of a DD statement ? 

(1) Identifies & describes a dataset
(2) Delimits a DO loop
(3) Marks the start of a declarative section
(4) Delimits the start of an inline include section

8) When output dataset space is required, what quantity categories are used ?

(1) Primary, Secondary, Directory
(2) Address, Units, CONTIG or ALS
(3) Displacement and length
(4) Megabytes, Kilobytes and Bytes

9) What statement marks the beginning of a job step; assigns a name to the step; identifies the program or catalogued or in-stream procedure to be executed in the step ?

(2) RUN
(3) EXEC
4. GO

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

(2) RLSE

11) Can an individual step be restricted from using all the job’s allowed CPU time ?

(1) Yes
(2) No
(3) Only in Catalogued Procedure
(4) Through the STEPTIME parameter

12) Where can program checkpoints be stored for use in a restart ?(1) CHCKPOINT DD statement
(2) SYSCHK DD statement
(3) CHKOUT DD statement
(4) CHECK or DD statement

13) How can the disposition of sysout datasets be set for an entire jobstream ?

(1) SYSOUT parameter
(2) OUTPUT parameter
(3) DEFAULT parameter
(4) DEST keyword

14) What statement marks the end of an in-stream or Catalogued procedure ?

(2) SET
(3) PROC
(4) PEND

15) What is the function of DD name parameter with a 2 part structure; Audit.Report ?

(1) Override the Audit DD statement in the report
(2) Override the Report DD statement in the Audit procedure
(3) Concatenate a dataset onto a DD statement in a called module
(4) Delete the Audit DD statement in the Report

16) Which DD parameters are required ?

(1) All parameters & Keywords are optional
(2) Dsname, SPACE, RECFM
(3) Dsname, SPACE, UNIT
(4) Dsname, DISP, SPACE

17) How can an in-stream dataset be terminated?

(1) //
(2) //*
(3) /*
(4) None of the above

18) What is the function of the DD DCB keyword?

(1) Begins the subparameters of the DCB
(2) Begins the DASD control block
(3) Marks the close of the DCB
(4) Modifies the record type parameters

19) What is the maximum length of a single line of JCL ?

(1) 71 bytes
(2) 60 bytes
(3) 55 bytes
(4 ) 80 bytes

20) What is the purpose of DD DUMMY statement ?

(1) Marks a deleted DD statement
(2) Begins an interpreted command stream
(3) Specifies no space allocation & no disposition processing
(4) Suppress command processing

21) Many JCL statements contain specific values designed to direct & control the execution of the statement. What are these fields called ?

(1) Linkage Variables
(2) Parameters
(3) Control Libraries
(4) Includes

22) When space is allocated for an output dataset, what units can be used?

(1) Disks
(2) Megabytes
(3) Cylinders, Tracks, Blocks
(4) Bytes

23) What is the format of comment statement ?

(1) //
(2) //*
(3) /*
(4 ) None of the above

24) A DD statement consists of 4 fields. Name them :-

(1) Name, DD, Space, Device
(2) Format, Name, DD, Space
(3) DD, parameter, device, format
(4) Name, DD, parameter, comments

25) What DD statement is used to supply the name of a dataset ?

(1) Name
(2) Dsname
(3) Label
(4) File

26. What is the purpose of the ‘DD KEYLEN’ parameter?

(1) Specify the length of a data set key in bytes
(2) Override the key length of an SMS defined VSAM dataset
(3) Override the key length specified in the dataset label
All of the above

27. What is the function of the STEPLIB DD statement?

(1) Identify a library to be searched for programs named in the EXEC statement
(2) Identify a library containing executable job steps
(3) Override the system step library within a job stream
(4) All of the above

28. How can return codes be tested before execution of a job step?

(1) Through the RC keyword
(2) Through the CODE keyword
(3) Through the COND keyword
(4) Through the RETURNCD keyword

29. What is concatenating? 

(1) Overriding or adding procedures
(2) Logically connecting input datasets
(3) Overriding a called PROC dsname
(4) All of the above
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