Start learning 50% faster. Sign in now
First-In-First-Out (FIFO) page replacement algorithm replaces the oldest page in memory when a page fault occurs. While simple and easy to implement, FIFO is prone to Belady's Anomaly, where increasing the number of frames paradoxically results in more page faults. This counterintuitive behavior occurs because the algorithm does not consider page usage patterns and blindly removes the oldest page, even if it is frequently accessed. For example, in a specific reference string, adding more frames can displace frequently used pages, causing additional page faults. This makes FIFO less efficient for modern systems compared to algorithms like LRU or Optimal Replacement. Why Other Options Are Incorrect: 1. Optimal Page Replacement: Guarantees the minimum number of page faults by replacing the page that will not be used for the longest time, thus immune to Belady's Anomaly. 2. LRU: Replaces the least recently used page, considering actual usage patterns, avoiding the anomaly. 3. MRU: Replaces the most recently used page, generally not susceptible to Belady's Anomaly. 4. Clock Algorithm: A variation of FIFO that uses a reference bit to approximate LRU, mitigating the anomaly. FIFO’s susceptibility to Belady’s Anomaly underscores the importance of using more sophisticated algorithms like LRU in systems requiring efficient memory management.
1) far
2) close
3) shut
4) make
5) open
Little or no ___________ water is to be found, and only after a thundershower are the pools filled.
Select the most appropriate word to fill in the blank.
I had a stroke at an early age, but what I thought was a great ______ at that time chang...
Fill in the blank/s with suitable Word/s:
The event organizer needs to _________ the venue and _________ the catering arrangements.
The thing is good but there is ---------missing to make it an excellent work
Fill in the blanks with appropriate forms of modals from the alternatives given below each sentence.
_____ you rather have tea or coffee?
In the following question ,sentences are given with blanks to be filled in with an appropriate word.four alternative is suggested for each question.
Fill in the blanks.
You can’t ________ with other people.
Polarisation in not ____________________to our body politic alone; it is _______________into the vitals of our social fabric.
A/An ……….. species, the tiger is fighting for its ……………. in India.