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1

### GATE CSE 1995

In a virtual memory system the address space specified by the address lines of the $$CPU$$ must be __________ than the physical memory size and _______ than the secondary storage size.
A
smaller, smaller
B
smaller, larger
C
larger, smaller
D
larger, larger
2

### GATE CSE 1995

The address sequence generated by tracing a particular program executing in a pure demand paging system with $$100$$ records per page with $$1$$ free main memory frame is recorded as follows. What is the number of page faults?

$$0100, 0200, 0430, 0499, 0510, 0530, 0560, 0120, 0220, 0240, 0260, 0320, 0370$$

A
$$13$$
B
$$8$$
C
$$7$$
D
$$10$$
3

### GATE CSE 1994

Consider the following heap (Figure) in which blank regions are not in use and hatched region are in use.

The sequence of requests for blocks of size $$300, 25, 125, 50$$ can be satisfied if we use.

A
Either first fit or best fit policy (any one)
B
First fit but not best fit policy
C
Best fit but first fit policy
D
None of the above
4

### GATE CSE 1994

A memory page containing a heavily used variable that was initialized very early and is in constant use is removed when
A
LRU page replacement algorithm is used
B
FIFO page replacement algorithm is used
C
LFU page replacement algorithm is used
D
None of the above

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