Reading Review Quiz (Week 12)

Question 1

Which color is most commonly used to indicate a regular singlemode optical fiber? *

Answer 1

Yellow

Question 2

In fiber optic networks loss is the amount of light that is lost in a mated pair of connectors, a splice, or a long length of installed and terminated fiber optic cable. The loss of power in light is measured in what? *

Answer 2

Decibels (dB)

Question 3

A fiber optic network transmits information as pulses of light over thin strands of extremely pure glass that makes it ______ than copper cables or wireless. *

Answer 3

• Transmit data at higher rates
• Send signals over longer distances
• More secure in noisy electrical environments

Question 4

Fiber optic networks can send signals in analog or digital format? *

Answer 4

True

Question 5

Many fiber optic networks use ______ multiplexing to send multiple signals over the same fiber at the same time. *

Answer 5

Wavelength division

Question 6

The difference between the specified output of a transmitter and the minimum power input of a receiver in a fiber optic link is called the ______. *

Answer 6

Power budget

Question 7

Practically the only networks that still use multimode fiber are ______. *

Answer 7

Premises LANs

Question 8

Fiber-to-the-home passive optical networks use ______ to connect many users from one central source to save fibers and costs. *

Answer 8

Optical splitters

Question 9

Outside plant fiber optic networks use ______ fiber for its greater length and bandwidth capability. *

Answer 9

Single-mode

Question 10

With _____, phone calls are treated as just another kind of data. *

Answer 10

Voice over IP

Question 11

Which of the following communication technologies provides the highest degree of security? *

Answer 11

Fiber Optic cable

Question 12

What does the term “attenuation” mean in data communication? *

Answer 12

loss of signal strength as distance increases

Question 13

What are two common causes of signal degradation when using UTP cabling? (Choose two.) *

Answer 13

• improper termination

* low-quality cable or connectors

Question 14

Refer to the image below. What is wrong with the displayed termination? (Choose two) *

https://lh5.googleusercontent.com/uHciSH5mY7cDdLPpdJWlTYbIlPqdyCpgSYmIInjAJXVuNJQyzMl2yXYbJpGmSwE-0eyFhftu6rKZ1pfhY5JQjhEMz1lMQYyYwpmwZD0Fnwdn4BK0mn76C8cA472sB7EbAA=w300

Answer 14

• The untwisted length of each conductor is too long.

* There is insufficient strain relief