---
title: "Ten Top DFHCOMMAREA QUIZ Questions"
description: "How DFHCOMMAREA in CICS works explained in the form of simple questions and answers and a good refresher for all developers working in Mainframe projects."
url: https://srinimf.com/2015/10/27/ten-top-dfhcommarea-quiz-questions/
date: 2015-10-27
modified: 2026-10-10
author: "Srini"
image: https://i0.wp.com/srinimf.com/wp-content/uploads/2015/10/quiz-dfhcommarea.png?fit=507%2C338&ssl=1
categories: ["CICS", "Quiz"]
tags: ["The selected DFHCOMMAREA Questions"]
type: post
lang: en
---

# Ten Top DFHCOMMAREA QUIZ Questions

**1) How many ways you can pass data from one program to another program?**

-DFHCOMMAREA

-CHANNELS

-INPUTMESSAGE

**2)What are the 3 commnds that you use in CICS to pass data to another program?**

-LINK, XCTL and RETURN

**3)[How to](https://srinimf.com/2015/10/28/top-stunning-questions-on-cics-return-command/) create a CHANNEL and Container in CICS?**

EXEC CICS PUT CONTAINER(container-name) CHANNEL(channel-name) FROM(data_area) commands.

**4) What are the different commands where you can use CHANNELS?**

EXEC CICS LINK PROGRAM CHANNEL(channel-name)

EXEC CICS RETURN TRANSID CHANNEL(channel-name)

EXEC CICS START TRANSID CHANNEL(channel-name)

EXEC CICS XCTL PROGRAM CHANNEL(channel-name)

**5)How can you pass data using INPUTMSG?**

EXEC CICS RECEIVE

INTO(TERMINAL-INPUT).

EXEC CICS LINK

PROGRAM(PROGRAMB)

INPUTMSG(TERMINAL-INPUT).

**6)Will data is available to program A ?**

Scenario – A->(LINK)B -> (XCTL) C

Yes, If rogram A issues a LINK command to program B, which in turn issues an XCTL command to program C, and if B passes to C the same communication area that A passed to B, program C will be passed addressability to the communication area that belongs to A (not a copy of it), and any changes made by C will be available to A when control returns to it.

**7) Is it possible to issue RETURN command to access a Transaction id of Higher level from Lower level?**

No, It is not possible

**8) Along with LINK Command, if we do not give LENGTH, then what will happen?**

Link command will fail

**9)How many Containers you can add to a CHANNEL?**

NO Limit. As you wish, you can add ‘n’ number of containers

**10) Which one CHANNEL or DFHCOMMAREA might take more staorage?**

CHANNEL might take more storage. Since DFHCOMMAREA is accessed by Pointers. CHANNEL with containers COPY data from one program to another.

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