PHYSICAL LAYER AND TRANSMISSION MEDIA
INTRODUCTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Smoke signals are an example of communication through ____
|
|
a guided medium
|
|
|
an unguided medium
|
|
|
a refractive medium
|
|
|
a small or large medium
|
Explanation:
Detailed explanation-1: -Word forms: smoke signals plural. countable noun [usu pl] If someone such as a politician or businessperson sends out smoke signals, they give an indication of their views and intentions. This indication is often not clear and needs to be worked out.
Detailed explanation-2: -Smoke signals were used by the Chinese in ancient times to give warnings about an approaching enemy. Guards stationed on the towers along the Great Wall sounded the alarm through a smoke signal, and nearby towers transmitted the message along using the same method.
There is 1 question to complete.