1. The longest delay in reading a file sector is:
a. Seek delay b. rotational delay
c. transfer delay d. none of the above
2. Contiguous file systems suffer from similar problems as (in mem mgmt)
a. static partitions b. dynamic partitions c. paging d. none of the above
3. Polling and interrupts are two ways for the device to communicate with the CPU
a. polling is always faster b. interrupts are always faster c. polling and interrupts take constant time d. none of the above
4. DMAs are useful in transfering large amounts of data to memory because
a. they do not use the bus b. they access memory when memory is busy c. they only use the bus d. none of the above
5. Disk scheduling is important since it tries to decrease
a. the seek time b. the polling time c. the rotational delay d. the interaction with the organ pipe distribution