Answer:d) Mono-alphabetic substitution rules
Explanation: Poly-alphabetic cipher is the cryptography that is done by using the many alphabets in substitutional way. They are supposed to have a good security because they use cipher text alphabets for the encryption and then decrypts it.
Substitution of the alphabets is done by the rule of the mono-alphabetic substitution rules.Other given options are incorrect because they are not used in the cryptography of the alphabetic cipher. Thus option (d) is the correct answer.
The system software consists of the programs that control or maintain the operations of the computer and its devices.
Windows, icons, menus, and pointers does a graphical user interface (GUI) interact with a desktop or laptop computer.
- Windows, icons, menus, and pointers
<u>Explanation:</u>
Graphics user interface (gui) made a big resolution on desktop or laptop or tablet or workstation industries. In olden days till 1994 still, people were using the black and white computer where a desktop consists of keyboard and printer and monitors where display color white and black.
If we open a picture it will display only in black and white so games are in black and white mode. After windows 3.1 we have seen color picture and mouse interface is used. Since technology developed and interface in GUI is also developed improved in windows icon menu and mouse pointer.
As technology developed we going back to a dark mode such as black and white mode.