Quiz 3

What is meant by 'processor scheduling policy'?

• Selecting a memory location for a process

• Adding a processor to the system

• Deciding which process to run at given time

• None

Mark the incorrect statement.

• Scheduling policy should maximize the throughput.

• Latency is the time each process waits before executing

• Multiprogramming increases the efficiency of the system.

• A scheduling policy should minimize the throughput.

High level scheduling policy determines

• which jobs the system allows to compete actively for system resources.

• which processes shall be allowed to compete for processors.

• which active process the system will assign to a processor when one next becomes available.

• None

A scheduling policy is preemptive, if

• A scheduling policy is preemptive, if

• the system can remove the processor from the process it is running.

• once the system has assigned a processor to a process, the system can not remove that processor from that process.

• it minimizes the latency

The purpose of maintaining a memory hierarchy is

• Increase the efficiency and storage capacity

• Decrease the throughput

• Allocate more jobs to processor

• Increase the CPU utilization

Temporal Locality means

• Temporary locate the process

• Many processes that access data and instructions once are likely to access them again in the future

• Temporary locate the memory

• None

Three memory management strategies are

• First fit, Best fit and Worst fit

• Low level, Intermediate level and high level

• Fetch, Placement, Replacement

• Secondary, Primary and Cache

Internal fragmentation can be seen in

• Single user contiguous memory allocation

• Fixed partition multiprogramming

• Variable partition multiprogramming

• Low level scheduling

Disadvantage in Fixed partition multiprogramming is

• CPU is idle

• A job had its precise location in memory determined before it was launched and could run only in a specific partition.

• I/O device resources are wasted.

• Low throughput

Solutions for external fragmentation are

• Coalescing, memory compaction

• Booting

• Merging

• None