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How does the PFR-based frame allocation algorithm respond to the page fault rate that is too low? O It does nothing. Having a low PFR is acceptable. It allocated one or more frames to the process that has the low PFR. It returns one or more frames from the owning process to the operating system. It terminates the process that has the low PFR.

How does the PFR-based frame allocation algorithm respond to the page fault rate that is too low? O It does nothing. Having a low PFR is acceptable. It allocated one or more frames to the process that has the low PFR. It returns one or more frames from the owning process to the operating system. It terminates the process that has the low PFR.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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How does the PFR-based frame allocation algorithm respond to the page fault rate that is too low? O It does nothing. Having a low PFR is acceptable. It allocated one or more frames to the process that has the low PFR. It returns one or more frames from the owning process to the operating system. It terminates the process that has the low PFR. QUESTION 4 What is the essence of Belady's anomaly? O Increasing the number of RAM frames results in an increase in the number of page faults for a given memory access pattern. Choosing the page for replacement that was most frequently used results in an increase in the number of page faults. Increasing the number of RAM frames results in a decrease in the number of page faults for a given memory access pattern. Choosing the page for replacement that was least recently used results in a decrease in the number of page faults. QUESTION 5 What is the meaning of the first argument of the POSIX function mmap0? (You may need to read the man page.) It is the handle of the open file to be mapped. It is always a NULL pointer. It is the name of the file to be mapped. It is the address of the new mapping in the virtual address space.
Transcribed Image Text:How does the PFR-based frame allocation algorithm respond to the page fault rate that is too low? O It does nothing. Having a low PFR is acceptable. It allocated one or more frames to the process that has the low PFR. It returns one or more frames from the owning process to the operating system. It terminates the process that has the low PFR. QUESTION 4 What is the essence of Belady's anomaly? O Increasing the number of RAM frames results in an increase in the number of page faults for a given memory access pattern. Choosing the page for replacement that was most frequently used results in an increase in the number of page faults. Increasing the number of RAM frames results in a decrease in the number of page faults for a given memory access pattern. Choosing the page for replacement that was least recently used results in a decrease in the number of page faults. QUESTION 5 What is the meaning of the first argument of the POSIX function mmap0? (You may need to read the man page.) It is the handle of the open file to be mapped. It is always a NULL pointer. It is the name of the file to be mapped. It is the address of the new mapping in the virtual address space.
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