81. What is cache coherence?
a) the property of a multi-processor system where all processors have the same view of memory
b) the property of a multi-processor system where processors can access any part of memory at any time
c) the property of a multi-processor system where each processor has its own copy of memory
d) the property of a multi-processor system where processors can share memory without conflicts
82. What is a cache hit?
a) when the processor requests data that is already in the cache
b) when the processor requests data that is not in the cache
c) when the cache is full and needs to be cleared
d) when the cache is disabled
83. What is cache thrashing?
a) when the cache becomes full and new data cannot be cached
b) when the cache is continually being flushed and reloaded with new data, resulting in poor performance
c) when multiple processors try to access the same cache line simultaneously
d) when the cache is disabled
84. What is the difference between volatile and non-volatile memory?
a) volatile memory retains data even when the power is turned off, while non-volatile memory does not
b) volatile memory does not retain data when the power is turned off, while non-volatile memory does
c) volatile memory is faster than non-volatile memory
d) non-volatile memory is more expensive than volatile memory
85. What is EEPROM?
a) a type of volatile memory
b) a type of non-volatile memory
c) a type of cache memory
d) a type of virtual memory
86. What is the difference between RAM and ROM?
a) RAM is volatile memory while ROM is non-volatile memory
b) RAM is non-volatile memory while ROM is volatile memory
c) RAM is faster than ROM
d) ROM is faster than RAM
87. What is flash memory?
a) a type of non-volatile memory that can be electrically erased and reprogrammed
b) a type of volatile memory that is used for high-speed data storage
c) a type of cache memory that is used to speed up disk access
d) a type of virtual memory that is used to increase the amount of available memory
88. What is the difference between RAM and ROM?
a) RAM is volatile and ROM is non-volatile
b) RAM is non-volatile and ROM is volatile
c) RAM and ROM are both non-volatile
d) RAM and ROM are both volatile
89. What is a memory controller?
a) a hardware device that manages access to memory
b) a software program that manages access to memory
c) a device that controls the power supply to memory
d) a type of memory used for long-term storage
Answer: a) a hardware device that manages access to memory[/expander_maker]
90. What is a memory bus?
a) a physical connection between the memory controller and the memory modules
b) a software program that manages access to memory
c) a device that controls the power supply to memory
d) a type of memory used for long-term storage
