PAI MCQ's SET-5
81.
The size of the pages in paging scheme is
a) variable
b) fixed
c) both variable and fixed
d) none
Answer: b
82. To convert linear addresses into physical addresses, the mechanism that the
paging unit uses is
a) linear conversion mechanism
b) one level table mechanism
c) physical conversion mechanism
d) two level table mechanism
Answer: d
83. The control register that stores the 32-bit linear address, at which the
previous page fault is detected is
a) CR0
b) CR1
c) CR2
d) CR3
Answer: c
84. Which of the following is not a component of paging unit?
a) page directory
b) page descriptor base register
c) page table
d) page
Answer: b
85. The control register that is used as page directory physical base address
register is
a) CR0
b) CR1
c) CR2
d) CR3
Answer: d
86. The bits of CR3, that are always zero are
a) higher 4 bits
b) lower 8 bits
c) higher 10 bits
d) lower 12 bits
Answer: d
87. Each directory entry in page directory is maximum of
a) 2 bytes
b) 4 bytes
c) 8 bytes
d) 16 bytes
Answer: b
88. The size of each page table is of
a) 2 Kbytes
b) 2 bytes
c) 4 Kbytes
d) 4 bytes
Answer: c
89. The dirty bit(D) is set, before which operation is carried out
a) write
b) read
c) initialization
d) none of the mentioned
Answer: a
90. The bit that is undefined for page directory entries is
a) P-bit
b) A-bit
c) D-bit
d) all of the mentioned
Answer: c
91. The bit that is used for providing protection is
a) User/Supervisor bit
b) Read bit
c) Write bit
d) all of the mentioned
Answer: d
92. The storage of 32 recently accessed page table entries to optimize the
time, is known as
a) page table
b) page descriptor base register
c) page table cache
d) none of the mentioned
Answer: c
93. The page table cache is also known as
a) page table storage
b) storage buffer
c) translation look aside buffer
d) all of the mentioned
Answer: c
94. The speed of Pentium-Pro when compared to that of Pentium is
a) equal
b) twice
c) thrice
d) two-third
Answer: b
95. Which of the following is not a transcendental instruction?
a) FSIN
b) FCOS
c) FMUL
d) FPTAN
Answer: c
96. The transcendental instruction that supports computation of sine and cosine is
a) FCOSSIN
b) FSNE
c) FSINFCOS
d) FSINCOS
Answer: d
97. The instruction that computes tan(x) is
a) FTAN
b) FTNGNT
c) FPTAN
d) FXTAN
Answer: c
98. The instruction that computes arctan(x) is
a) FTAN
b) FACTN
c) FARCTAN
d) FPATAN
Answer: d
99. The instruction, F2XMI, is used to compute
a) 2X
b) 2X-1
c) 2X+1
d) 2X+2
Answer: b
100. The instruction, FYL2XP, supports to compute the expression
a) Y*logX
b) Y*log2X
c) Y*log(2X+1)
d) Y*log2(X+1)
Answer: d
