Operating Systems

Sometimes, the process in our system has pending I/O. When this thing happens, swapping _____ be done.

• can

• must never

• both

• neither

Which can the main memory take in it?

• operating system

• user processes

• both

• neither

Which is faster than first-fit?

• Best fit

• Worst fit

• both

• neither

The program counter contains the location of the instruction being executed. The address is loaded into the memory address register of the memory. How do we refer that address?

• Physical address

• Logical address

• both

• neither

The run-time mapping from virtual to physical addresses is done by a hardware device properly called:

• Virtual to physical mapper

• CPU mapping unit

• both

• neither

The base register is also known as the:

• basic register

• relocation register

• both

• neither

In allocating address space to each process, what specifies the size of the range where that process can be allocated?

• Base register

• Limit register

• both

• neither

The _____ consists of all processes whose memory images are in the backing store or in memory and are ready to run.

• CPU

• Secondary Storage

• both

• neither

The program in our operating system always deals with what address?

• logical address

• virtual address

• both

• neither

External fragmentation will not occur when:

• First fit, best fit, or worst fit are used

• no matter which algorithm is used, it will always occur

• both

• neither