Question 26 (1 point)

Data on a disk is organized and accessed in units of _____________ .

Question 26 options:

The r/w head of a disk is currently at track 143. Requests to access the following tracks have arrived: 86, 1470, 913, 1771, 948, 1509, 1022, 1750, 130. In which order will the tracks be visited using SSTF algorithm?

Question 28 (2 points)

Explain whether starvation (or, indefinite blocking) can (or, cannot) happen in the following resource-allocation policy:

Requests for and releases of resources are allowed at any time. If a request for resources cannot be satisfied because the resources are not available, then we check any processes that are blocked waiting for resources. If a blocked process has the desired resources, then these resources are taken away from it and are given to the requesting process. The need for resources by the blocked process is updated accordingly to include the resources that were taken away.

Question 29 (1 point)

A process that is executing continuously in a loop to wait for access to a critical section does not consume CPU time.

Question 29 options:

	True
	False

Question 30 (1 point)

Question 30 options:

The _______ is an example of a type of attack that occurs when a user opens a malicious executable supplied under the guise of a legitimate program.