MS-DOS is a command-line operating system.
Therefore, the best answer is Command-line.
Answer: Unified communication
Explanation: Unified communication is the communication technique in which merges various communication routines into a individual business.It works as the phone system which helps in increment of productivity in an organizational business.
The unifying of voice,data/information,video etc is done for optimizing and improving the business that also results in faster communication rates, secure communication etc.
<h2>6</h2>
The elements used in Qbasic:
- Character set.
- Variables.
- Constants.
- Operator and Operands.
- Expression.
- Statements.
The subject line should be a brief message explaining some of the contents of the email.
