Question 1

Fiber-optic lines are always the best communications channels for high speed informationrelays.

Accepted Answer

Fiber-optic lines offer high speeds and low latency, but they are not always the best option due to factors like cost, geographical challenges, and the specific needs of the user or application. Other technologies like wireless or satellite communications might be more suitable in certain situations.

Question 2

An infrared laser can be used to relay information through the air.

Accepted Answer

Infrared lasers can be used in communication systems to transmit information through the air by modulating the light beam with the data to be sent, similar to how fiber optic communications work but without the physical cable.

Question 3

In the wireless industry, SAR is an abbreviation for ______.&#10;A) Standard Area Relay&#10;B) Specific Absorption Rate&#10;C) Specific Area Relay&#10;D) none of these answers

Accepted Answer

SAR stands for Specific Absorption Rate, which is a measure of the rate at which energy is absorbed by the human body when exposed to a radio frequency electromagnetic field.

Question 4

A direct link ______ been established between cell phone use and health effects.&#10;A) has&#10;B) has not

Accepted Answer

The sentence structure suggests a negation, implying that a direct link between cell phone use and health effects has not been established.

Question 5

3G systems promise to revolutionize wireless communication.

Accepted Answer

3G systems, introduced in the early 2000s, significantly improved wireless communication by offering higher data speeds, enabling internet access, video calling, and mobile TV, thus revolutionizing how we use mobile devices.

Question 6

The term LEO is a term used in the ______ industry.&#10;A) fiber-optic&#10;B) over the air laser&#10;C) PCS&#10;D) satellite&#10;E) none of the answers

Accepted Answer

LEO stands for Low Earth Orbit, which is a term widely used in the satellite industry to describe satellites that orbit the Earth at altitudes between about 160 to 2,000 kilometers (100 to 1,200 miles).

Question 7

In general, a WLAN is superior to a fiber-optic line in regard to security issues (e.g., the security of an information relay).

Accepted Answer

Fiber-optic lines are generally considered more secure than WLANs because the data they carry is harder to intercept or tap into without detection.

Question 8

Bluetooth and Wi-Fi both refer to&#10;A) new satellite-based relays&#10;B) A WLAN's information carrying capacity&#10;C) A LAN's two major networking components&#10;D) none of these answers

Accepted Answer

Bluetooth and Wi-Fi are technologies for wireless communication, not satellite-based relays, a WLAN's capacity, or components of a LAN specifically.

Question 9

Cell phones and other technologies have made it possible for information to be routed to you 24 hours a day, wherever you may be. Is this a good development? Why or why not?

Accepted Answer

The answer of Cell phones and other technologies have made...

Deck 8: Wireless Technology and Mobile Communication