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CICS Interview Questions & Answers - Learning Mode

CICS Interview Questions & Answers - Learning Mode

Customer Information Control System (CICS?) is a family of mixed language application servers that provide online transaction management and connectivity for applications on IBM Mainframe systems under z/OS and z/VSE. CICS is middleware designed to support rapid, high-volume online transaction processing. CICS (Customer Information Control System) is an online transaction processing (OLTP) program from IBM that, together with the COBOL programming language, has formed over the past several decades the most common set of tools for building customer transaction applications in the world of large enterprise mainframe.

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CICS Interview Questions & Answers - Learning Mode
Try CICS Interview Questions & Answers - Exam Mode
Question: What are the Cursor Positioning techniques in CICS?

Answer: Static Cursor Positioning : When defining the map field DFHMDF macro in the attribute parameter IC is coded, the cursor will be positioned in that field. This method of cursor positioning is called static cursor positioning Relative Positioning : Code the CURSOR option with a value relative to zero Symbolic Positioning : Move high values or ?1 to the field length in the symbolic map and code CURSOR on the SEND command. Source:
Question: What is the difference between the XCTL and LINK commands?

Answer: The LINK command anticipates return of control to the calling program, the XCTL command does not. Return to the calling program will be the result of the CICS RETURN command, specifying TRANSID(name of the calling program). Source:
Question: What happens when a CICS command contains the NOHANDLE option?

Answer: No action is going to be taken for any exceptional conditional occurring during the execution of this command. The abnormal condition that occurred will be ignored even if an EXEC CICS HANDLE condition exist. It has the same effect as the EXEC CICS IGNORE condition except that it will not cancel the previous HANDLE CONDITION for any other command. Source:
Question: The error code AEIV?

Answer: This is the error code for length, if length of the source data is more than the receiving field, this error will occur. Source:
Question: What does the CEDF,CEMT,CEBR,CECI transactions do?

Answer: CEDF :
CICS-supplied Execution Diagnostic Facility transaction. It provides interactive program execution and debugging functions of a CICS programs.
CEMT : CICS-supplied Extended Master Terminal transaction. It displays or manipulates CICS control environment interactively.
CEBR : CICS-supplied Temporary Storage Browse transaction. It displays the content of Temporary Storage Queue ( TSQ ).
CECI : CICS-supplied Command Interpreter transaction. It verifies the syntax of a CICS comm Source:
Question: How can the fact that EIBCALEN is equal to zeros be of use to an application programmer?

Answer: When working in a pseudo-conversational mode, EIBCALEN can be checked if it is equal to zero. A programmer can use this condition as a way of determining first time usage(of the program). Source:
Question: What is EXEC CICS RETRIEVE ?

Answer: Used by STARTed tasks to get the parameters passed to them. Source:
Question: What is CEBR?

Answer: CEBR lets you browse the contents of a specific temporary storage queue. Source:
Question: What is the maximum number of exceptions that can be specified with a single HANDLE CONDITION command in CICS ?

Answer: SIXTEEN (16) Source:
Question: What is the difference between a RETURN with TRANSID and XCTL ?

Answer: For example prog. A is issuing REUTRN with TRANSID to prog B. Prog A. is issuing XCTL to prog B. In RETURN with TRANSID the control goes to the CICS region and the user have to transfer the control to prog. B by pressing any of the AID KEYS. In XCTL the control is directly transfer to prog B. Source:
Question: The DFHCOMMAREA is used to pass information from one application to another. What are some other ways that this function can be accomplished?

Answer: You can also pass information in the following ways. - By using a temporary storage queue - By using an intrapartition TDQ - By using the Task Work Area - By using TCTUA - Through a file Source:
Question: The mode of achieving conversation with the user, by sending him the message and while waiting for his response, freeing the system resources is called?

Answer: Pseudo-conversation Source:
Question: What is the attribute byte?

Answer: Defines the display/transmission of field. most cases is an output field from the program. Source:
Question: What is MDT?What are FSET, FRSET ?

Answer: Modified Data Tag Bit in the attribute byte indicating modification of field on screen Happens on an input operation. FSET Sets MDT on to ensure field is transmitted Happens on an output operation FRSET Resets MDT Until this happens, field continues to be sent Source:
Question: How do you use extended attributes ?

Answer: Define EXTATT=YES and the correct terminal type. Source:
Question: How is dynamic memory allocated within a CICS application program?

Answer: Use a GETMAIN Source:
Question: Explain the term ?MRO? (Multi Region Operation)?

Answer: MRO is the mechanism by which different CICS address spaces with in the same CPU can communicate and share resources. Source:
Question: Name some of the common tables in CICS and their usage?

Answer: PCT Program Control Table - defines each transaction, containing a list of valid transaction identifiers (transid) where each transaction is paired with its matching program
PPT Program Processing Table - contains a list of valid program names and maps and whether a current version is in the CICS region or needs to be brought in as a new copy
FCT File Control Table - contains a list of files known to CICS, the dataset name and status (closed/open, enabled/disabled)
TCT Terminal Control Source:
Question: What is Pseudo-conversation?How it is achieved in CICS Programs?

Answer: The programming methodology in which the task will not wait for the terminal users response, but frees and resources after sending the message is call a PSEDUDO Conversational Technique. Terminating the task every time the application needs a response from the user and then starting the next transaction when the user presses a attention key is PSEUDO Conversational Processing. Source:
Question: which CICS defined field can you determine the position of the cursor on the map ?

Answer: ATTRIB FIELD Source:

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Latest 20 Questions
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