which of the following is true..??

Question

Consider the following statements:

S₁ : Increasing the number of page frames allocated to a process sometime increase the page fault rate in FIFO page replacement policy irrespective of page reference string.
S₂ : It is not necessary to have loader everytime in main memory.

Which of the following options is correct ?

A) Only S₁ is true

B) Only S₂ is true

C) Both S₁ and S₂ are true

D) Neither S₁ and S₂ are true

Comments

Both are FALSE!

---

@smriti012 why s1 is false isn't it the Balady's anomly....???

and for S2 see this https://gateoverflow.in/1662/gate1998-1-25-isro2008-41

---

both are false

loader is present always in memory and increasinf framess may or may not increase the page fault

---

^ why S1 is false?
do embedded systems also have loaders?

---

S1 is false because its given ...... irrespective of page reference string ....it should be like for  certain memory access patterns. 

---

@sudsho in microcontroller kit there is no loader. nd no os m i right?

---

^yes there is boot loading there

Answer 1

Statment S1 is false : FIFO suffers from belady anamoly . This means that even if we increaase the number of pages frames allocated to a process we still may ( not always )get a more number of page faults . This is only beacuse FIFO does not follow stack algorithm 

Statement S2 is false : Loader must be in Main memory .. Otherwise how will it bring your programes to main menory 

hence both statements are false 

Comments

why is S1 false??it is mentioned that sometimes,page fault may increase