99 practice sets · Page 4 of 5
Consider the following statements:
Statement I: Increasing the number of page frames allocated to a process sometimes increases the page fault rate
Statement II: Some programs do not exhibit locality of reference
Which of the statements given above is/are correct?
Both P and Q are true, and Q is the reason for P
Both P and Q are true, but Q is not the reason for P
P is false but Q is true
Both P and Q are false
A scheduling algorithm can use either..........priority or..........priority.
static, still
static, dynamic
live, dead
None of the above
A process is thrashing if
it is spending more time paging management than executing
it is spending less time paging than executing
page fault occurs very infrequently
swapping could not take place
A Page Table contains information on the page including
Base address of each page in physical memory
Page read/write permissions
Page was written into or not
All of the above
A data processing instruction where PC(R15)is written into takes the following cycles for execution:
1S
1S+I
2S+1N
2S+1N+1I
A CPU wrote "register content" into the memory in a Big-endian mode. When the same content is read back from the memory into a register, the CPU reads it in Little-endian mode.
The new content in the register will be different from what was written.
The content will be the same.
The content may be same or different.
Endianness need not be the same while reading and writing the contents into/from the memory.
A bus cycle request that transfers to or from an address which is unrelated to the address used in the preceding cycle is called a
Sequential Cycle
Internal Cycle
Non-Sequential Cycle
Coprocessor Register Transfer Cycle
A band limited signal can be reconstructed exactly if it is sampled at a rate at least
Maximum frequency
Twice the maximum frequency
Thrice the maximum frequency
All of the above
"Write Back" cache write policy is more efficient in a system where
Number of writes are more than reads
Number of reads are more than writes
Does not depend on the number of reads and writes
None of the above
..........is the concept in which a process memory is copied into the main memory from the secondary memory according to the requirement.
Paging
Demand paging
Segmentation
Swapping
Which of the following register in ARM7 is used to point to the location of currently executing instruction in a program?
R1
R5
R15
R8
Fixed instruction length is a feature of one of the following architecture.
CISC
RISC
X86
None of the above
Write Through technique is used in one of the following to write the data back.
Virtual memory
Main memory
Auxiliary memory
Cache memory
Which of the following statements are true I. In Little endian mode it is easier to determine a sign of the number II. Little endian mode is easier for addition and multiplication of multi-precision numbers III. Big endian mode is easier to divide two numbers IV. Big endian mode is easier to compare two numbers
I & II are true
III & IV are true
I & III are true and II and IV are false
I & II are false and III and IV are true
Which of the following statements are true with respect to pipelining. I. Pipelining is an implementation technique whereby multiple instructions are overlapped in execution. It is not visible to the programmer II. Each step is called a pipe stage or pipe segment III. Pipeline machine cycle is the time required to move an instruction one step down the pipeline
All are true
I and III are true
II and III are true
None of them are true
Which of the following processors belong to Reduced Instruction Set Computers (RISC family)?
ARM
AVR
MIPS
All of the above
Which of the following may not be on the APB bus
USART
RAM
Keypad
Timer module
Which of the following is the reason that the Least Recently Used (LRU) algorithm is usually not used as a page replacement algorithm?
Other practical schemes such as MIN do a better job
LRU requires knowledge of the future to work correctly
LRU is too inefficient to implement in practice
The Clock algorithm always outperforms LRU
Which of the following is not one of the source files of a linker to form an executable?
.obj
.lef
.so
.lib
Which of the following instruction ignores Operand1
MOV
MUL
ADD
SUB
