Selma writes the following four answers in her Computer Science examination. State which computer terms she is describing.
“It is a signal. When the signal is received it tells the operating system that an event has occurred.”
Selma is describing

Interrupts.

Explanation:

A software can be defined as a set of executable instructions (codes) or collection of data that is used typically to instruct a computer on how to perform a specific task and solve a particular problem.

The four (4) input-output (I/O) software layers includes the following;

I. User level software: it provides user programs with a simple user interface to perform input and output functions.

II. Device drivers: it controls the input-output (I/O) devices that are connected to a computer system through a wired or wireless connection.

III. Device-independent OS software: it allows for uniform interfacing and buffering for device drivers.

IV. Interrupt drivers (handlers): it is responsible for handling interruptions that occur while using a software on a computer system.

An interrupt is a signal from a program or device connected to a computer and it's typically designed to instruct the operating system (OS) that an event has occurred and requires an attention such as stopping its current activities or processes.

In conclusion, the computer term that Selma is describing is interrupts.

Interrupts

Explanation:

Dr Martin Luther King and his followers go to Selma, Alabama to attempt to achieve, through non-violent protest, equal voting rights and abilities for black people. In 1964, Dr. Martin Luther King Jr. of the Southern Christian Leadership Conference (SCLC) accepts his Nobel Peace Prize.

b. xor is the correct answer