Answer the following statements true (T) or false (F)
1. External devices are attached to a traditional IBM mainframe through interface boards.
2. On a traditional IBM mainframe, the channel’s instructions are stored in the CCW.
3. On a traditional IBM mainframe, a channel program consists of one or more channel
address words.
4. In a traditional IBM mainframe channel program, each CCW contains a command code
that specifies the operation to be performed, a data address, a byte count, and several
flags.
5. On a traditional IBM mainframe, just before it starts a physical I/O operation, the
mainframe operating system places the address of the channel program’s first CCW in
the channel address word (CAW).
1. F
2. F
3. F
4. T
5. T
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What will be an ideal response?
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A) Small caps B) Superscript C) Subleader D) Subscript
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