Question 1

Communication satellites need five essential groups of components: transponders, antennas, power supplies, telemetering devices, and thrusters.

Accepted Answer

This statement is true. Communication satellites require transponders to receive and amplify signals, antennas to transmit and receive signals, power supplies to generate and distribute power, telemetering devices to track and monitor the satellite's performance, and thrusters to adjust the satellite's position in orbit.

Question 2

Each satellite needs two groups of frequencies, one for uplinking and the other for downlinking.

Accepted Answer

This is true, as satellites need to receive signals from the ground (uplinking) and send signals back to the ground (downlinking), and these require two separate sets of frequencies.

Question 3

Today, switching on the Internet superhighway is handled through use of patch cords.

Accepted Answer

Switching on the Internet superhighway is done through use of routers and switches, not patch cords.

Question 4

The Internet began in the late 1960s as a government-sponsored computing network called NSFnet.

Accepted Answer

The Internet began in the late 1960s as a government-sponsored computing network called ARPANET, not NSFnet. NSFnet was created in the 1980s to provide access to supercomputing sites.

Question 5

Most American homes use a modem-equipped computer hooked to a conventional voice telephone line to reach the Internet.

Accepted Answer

Most American homes now use broadband connections like DSL, cable, fiber-optic, or satellite for Internet access, rather than dial-up connections that require a modem-equipped computer hooked to a conventional voice telephone line.

Question 6

Discuss advantages and disadvantages of microwave relays.

Accepted Answer

The answer of Discuss advantages and disadvantages of microwave relays....

Question 7

Explain how major international events such as the Olympic Games are relayed from game site to home viewer via satellite.

Accepted Answer

The answer of Explain how major international events such as...

Question 8

What are the advantages of fiber-optics over other traditional wire relays?

Accepted Answer

The answer of What are the advantages of fiber-optics over...

Question 9

Discuss why modems are necessary to reach the Internet.

Accepted Answer

The answer of Discuss why modems are necessary to reach...

Question 10

Describe how cable systems bring signals into homes from video sources available to them.

Accepted Answer

The answer of Describe how cable systems bring signals into...

Question 11

What barriers exist to adoption of CableCARD (CC) technology?

Accepted Answer

The answer of What barriers exist to adoption of CableCARD...

Quiz 5: Distribution by Wired Relays, Wireless Relays, and Over the Internet