Transmission & Networking Media

Question 1

In reference to computers and the internet, what is an appropriate analogy for throughput?

Answer 1

Throughput is like a clogged artery

Question 2

What does Mbps stand for?

Answer 2

Mbps stands for megabits per second

Question 3

In reference to computers and the internet, what is throughput?

Answer 3

Throughput refers to the actual speed of your data

Question 4

In reference to computers and the internet, what is bandwidth?

Answer 4

Bandwidth is the theoretical speed of your data

Question 5

The link efficiency of a channel is 0.2 and bandwidth is 4000hz. What is the throughtput?

Answer 5

800hz

Question 6

What is the link efficiency of full duplex?

Answer 6

More than 50%

Question 7

The frequency range of a channel is 4000hz to 6500hz. What is the bandwidth?

Answer 7

2500 hz

Question 8

What kind of channel does broadband transmission use?

Answer 8

Bandpass channel

Question 9

Which is a standard connector for unshielded twisted pair cable that resembles RJ-11 telephone jacks?

Answer 9

RJ-45

Question 10

CAT 3 and CAT 5 belong to which of the following cable categories?

Answer 10

Shielded twisted pair cable

Question 11

Which of the following connectors are also used with multimode and single-mode fiber optic cables for accessing gigabit ethernet?

Answer 11

MT-RJ

Question 12

Crosstalk and attenuation are NOT a problem in which of the following media?

Answer 12

Fiber optic cable

Question 13

Which of the communication channel types would be the ideal choice for making a phone call?

Answer 13

Full-duplex

Question 14

Which one of the communication channels allows for data to be sent and received in both directions, but not at the same time?

Answer 14

Half-duplex

Question 15

Which service would a simplex channel be ideal for?

Answer 15

All answers are correct

Question 16

Why is it important to know the three types of communication in networking?

Answer 16

All answers are correct

Question 17

What does throughput mean?

Answer 17

Throughput is the actual amount of data you get in a certain amount of time

Question 18

What does latency mean?

Answer 18

Latency is the delay between when you request data and the time you actually receive it

Question 19

Which of these is NOT true?

Answer 19

High latency is better than low latency

Question 20

What does bandwidth mean?

Answer 20

Bandwidth is the theoretical maximum speed of your data

Question 21

In unshielded twisted pair cables, which category starts being able to push gigabit network speeds (1000+ Mbps)?

Answer 21

CAT5e

Question 22

Which of these is the most common cable type to connect a home network to a cable modem using an internet service provider?

Answer 22

Coaxial

Question 23

When internet service providers use fiber optic cables, which cable type are they most likely to use for home networks?

Answer 23

Plastic optical cable

Question 24

What is the main advantage of using a shielded twisted pair (STP) cable for a network connection?

Answer 24

To cut back on electrical interference

Question 25

What part of an optical fiber cable reflects light back into the core as the cable bends?

Answer 25

Cladding

Question 26

The type of fiber used typically for long distance runs is:

Answer 26

Single-mode

Question 27

The core strand of an optical fiber can be made of what type of material?

Answer 27

Glass or Plastic

Question 28

An advantage of optical fiber over traditional copper wiring is:

Answer 28

Less bulk

Question 29

Many family members using the network connection at the same time reduces:

Answer 29

Throughput

Question 30

What is simplex mode of communication?

Answer 30

Only one sender and receiver