Learn the correct z/OS console command to display a list of all console message buffers currently in use on IBM mainframe systems. Includes detailed explanation.
Table of Contents
Question
How do you display all console with message buffers in use?
A. D C,M
B. D C,A
C. D B,A
D. D C,B
Answer
To display all console message buffers currently in use on a z/OS mainframe system, the correct command is:
D. D C,B
Explanation
The D C,B command requests the status of console message buffers. C indicates that you want to display information about consoles. The B parameter specifies to show the status of buffers.
When you issue D C,B, the system will output a list of all consoles that have a message buffer in use, along with relevant details about each buffer such as its ID, size, and number of messages.
The other command options listed are incorrect:
- D C,M would display information about console mode (not buffers)
- D C,A would display console attributes and settings (not buffers)
- D B,A is an invalid command
So in summary, to get a comprehensive status of all message buffers across consoles on a mainframe system, use the D C,B command in the z/OS console. This will provide the key details needed to understand buffer usage.
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