________ allow multiple kernel controls paths to hold a read lock, but permit only one kernel control path to hold a write lock with no concurrent readers.
a) Reader spin locks
b) Writer spin locks
c) Kernel semaphores
d) None of the above
d) None of the above
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A server administrator recently upgraded a three-year-old server by replacing the old CPU and memory with a new CPU and memory. After the upgrade, the server regularly generates CPU and memory errors; however, the server is working. The administrator has confirmed the new CPU and memory are not faulty. Which of the following is the MOST likely cause of this problem?
A. Bad motherboard B. Outdated BIOS and firmware C. Outdated RAID controller D. Bad memory and CPU chipset
Answer the following statements true (T) or false (F)
1. A programmer indicates a job’s class by coding a CLASS parameter on an OS/JCL JOB statement. 2. A keyword parameter derives its meaning from its relative position. 3. Keyword parameters must be coded in a prescribed order. 4. On some batch systems, a job’s priority is determined, in part, by the amount of space it requires. 5. The OS/JCL MSGLEVEL (message level) parameter allows the programmer to select which JCL and device allocation messages are to be printed.