Answer:
Consequences of not having the open system call:
In case the UNIX doesn't contain the "Open" system call, then it would always be necessary to mention the file name which we need to be retrieved for every operation that is required to be read.
The issue which will occur is the problem of flushing the inode back-again to disk.
It may be possible that it might time out as well.
Hence, even though it might look clumsy but it may still work but the overhead involved will be high.
