Learn the correct syntax for taking device 0E12 offline in z/OS using the VARY command. The V 0E12,OFFLINE command is the proper way to vary the device offline.
Table of Contents
Question
How will you take a device 0E12 offline
A. V OFF,0E12
B. V 0E12,OFFLINE
C. V 0E12,line
D. none
Answer
B. V 0E12,OFFLINE
Explanation
To take a device offline in z/OS, you use the VARY (or V) command followed by the device number and the OFFLINE keyword. So to take device 0E12 specifically offline, the full command is:
V 0E12,OFFLINE
The other options are incorrect:
A. V OFF,0E12 – OFF is not a valid keyword, OFFLINE must be used
C. V 0E12,line – “line” is not a valid keyword
D. none – One of the commands is correct (B), it’s not “none of the above”
Using OFFLINE after the device number 0E12 is the proper syntax to vary that device offline and make it unavailable for use on the z/OS system. The VARY OFFLINE command takes the device offline immediately. To bring it back online, you would use V 0E12,ONLINE.
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