Answer:
Symbolic names made up by the programmer that represents locations in the computer's RAM
Explanation:
Variables refer to memory location that has a name and holds a value of a particular type.
In most programming langauges a variables must be declared before it can be used in the program. Declaration means giving the variable a name according to some established rules and mentioning its data type. The popular types are integers (whole numbers), floats (floating point) and String(sequence of characters)
Some examples of variables' declarations and initializations are given below
int a = 5; //This declares a variable called a of type integer with a value of 5
float b = 1.2; //This declares a variable called b of type float with a value of 1.2
String name = "David" //This declares a variable called name of type String with a value of David
The operating system is what allows the user to interact with the computer's hardware. It has basic services such as accepting commands from the user, managing, loading, and executing programs, and managing hardware resources. Some examples of operating systems are Windows, Linux, Mac OSX, and IOS.
Application software are pieces of software that perform specific tasks such as word processors.
Answer: star topology.
Explanation:
The layout of the way how the computers in a netword are interconnected is called network tipology.
Some types of network topologies are:
1) Point-to-point tipology: all the computers are connected to each other directly (computer-to-computer, in pairs, this is a direct link between each two computers).
2) Bus topology: all the nodes (computers or server) are connectect to a maing cable.
3) Star topology: all the computers are connected to a central computer or server which is called central hub. This is the layout described in the question.
4) Ring topology: the computers are connectec in a circular path; each computer is connected to the next computer.
5) Mesh: every computer is connected to every other computer.
Full documentation in the man pages.