What is a channel? Give three examples.
What will be an ideal response?
In communications, the channel is the path or medium for communication between source and destination. When we are speaking to someone, the path is the air or environment around us through which our voice travels. In computer to computer communications, the path is more complex, consisting of the cabling and devices that interconnect our two communicating devices. Finally, in sending a text message to your friend, the communication channel consists of the air between you and a cell tower, any number of other cell towers, the cell provider’s network, the destination cell tower, and the air between the final cell tower and your friend.
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Figure 8-3
The accompanying figure shows the components needed to produce a wiring diagram.
Answer the following statement true (T) or false (F)
Any device that produces mechanical motion from the forces of the magnetic flux created by an electro-magnet is called a(n) _______________.
Fill in the blank(s) with the appropriate word(s).
After communication is "encoded," it is sent through a(n):
a. aperture b. channel c. tube d. tunnel
In isometric projection, the angle between a horizontal line and the line showing the lower right edge of the part is:
A. 20 degrees B. 30 degrees C. 45 degrees D. 60 degrees