Answer: True
Explanation:
System development is the process in which a system is developed,planned, designed,tested, modified etc. Analysis of design,internal structure and external factors is done for implementation to creation of system.
- An IT professional is responsible for performing various tasks in system development.He/she has to analyze and detect that the developed system is convenient for user.
- Involvement of user also plays an important part in system development through various ways such as improvement in system, smooth implementation,innovation,enhancing quality etc.
- So, user can be involved in official or unofficial manner for betterment of system development.
- Thus, the given statement is true.
Answer:
Explanation:
Given
Power at point A = 100W
Power at point B = 90W
Required
Determine the attenuation in decibels
Attenuation is calculated using the following formula
Where 
t and 
t
Substitute these values in the given formula
<em>(Approximated)</em>
The best line to be added to the teacher’s lesson plan, which is supposed to emphasize the benefits of global communication, would be (D) learning in a global community enables you to expand your horizons and learn new languages.
The other options are not suitable because they highlight the negative side of global communications, which is not something that the teacher’s lesson intends to do.
