Module 6: Network Media Types

Question 1

What does network media provide in a network?

Answer 1

Connectivity and the path for communications to travel over

Network media can be either wireless or copper connectivity.

Question 2

What is the most common type of connectivity in an Ethernet network?

Answer 2

Unshielded twisted-pair (UTP) cabling

UTP cabling consists of a series of wires arranged in pairs, color-coded for consistency.

Question 3

What type of connector is commonly used for Ethernet cables?

Answer 3

RJ 45 connector

RJ 45 connectors are used for almost all Ethernet cables in today’s networks.

Question 4

What type of cabling is typically used for cable TV?

Answer 4

Coaxial cable

Coaxial cable uses BNC type connectors or screw-on F type connectors.

Question 5

How does coaxial cable differ from twisted-pair cable?

Answer 5

Coaxial cable has a single solid copper core

The copper core is surrounded by insulation and shielding to protect against electromagnetic interference.

Question 6

What is a significant advantage of fiber optic cable over copper cabling?

Answer 6

Not affected by electromagnetic interference

Fiber optic cables carry only light waves, allowing for longer distances without signal degradation.

Question 7

What materials can fiber optic cables be made of?

Answer 7

• Glass
• Plastic

Fiber optic cables have a solid core surrounded by a second layer to provide a reflective surface.

Question 8

What is a key benefit of using fiber optics for long distances?

Answer 8

Can carry light signals for much longer distances than copper cabling

Fiber optics offer more flexibility and variation in the types of signals they can support.

Question 9

What are the three types of media used in modem networks?

Answer 9

• Metal wires within cables
• Glass or plastic fibers within cables (fiber-optic)
• Wireless transmission

These media types provide the channel for data transmission across a network.

Question 10

Data transmitted over metal wires is encoded into _______.

Answer 10

electrical impulses

This method is commonly used in traditional copper cabling.

Question 11

Data transmitted over fiber-optic cables is encoded into _______.

Answer 11

pulses of light

Fiber-optic cables use glass or plastic fibers to transmit data.

Question 12

Data transmitted via wireless transmission is encoded through _______.

Answer 12

modulation of specific frequencies of electromagnetic waves

This method allows for data transmission without physical connections.

Question 13

What are the four main criteria for choosing network media?

Answer 13

• Maximum distance for signal
• Environment for installation
• Amount of data and transmission speed
• Cost of media and installation

These criteria help determine the most suitable media for a given network setup.

Question 14

What are the three most common network cables?

Answer 14

• Twisted-pair
• Coaxial cable
• Fiber-optic cable

These cables are essential for establishing network connections.

Question 15

Which type of cable does Ethernet technology generally use?

Answer 15

Twisted-pair cable

Twisted-pair is the most commonly encountered type of network cabling.

Question 16

In twisted-pair cable, how are the wires organized?

Answer 16

Wires are grouped in pairs and twisted together

This design helps reduce interference.

Question 17

What is the typical color scheme for wires in a twisted-pair cable?

Answer 17

One wire is a solid color and its partner is the same color striped onto a white background

This color coding helps identify the same wire at each end.

Question 18

What is Coaxial Cable primarily used for?

Answer 18

• Connecting cable TV
• Connecting satellite communication systems

Coaxial cable is one of the earliest types of network cabling developed.

Question 19

Describe the structure of Coaxial Cable.

Answer 19

• Single rigid copper core
• Layer of insulation
• Braided metal shielding
• Protective jacket

This structure allows coaxial cable to function as a high-frequency transmission line.

Question 20

True or false: Coaxial Cable is used for low-frequency signal transmission.

Answer 20

FALSE

Coaxial cable is used as a high-frequency transmission line to carry high-frequency or broadband signals.

Question 21

What type of core does Coaxial Cable have?

Answer 21

Single rigid copper core

This core is essential for conducting the signal.

Question 22

Fill in the blank: Coaxial Cable is used as a high-frequency transmission line to carry _______.

Answer 22

high-frequency or broadband signals

This capability makes it suitable for various communication applications.

Question 23

What is the diameter of fiber-optic cable compared to?

Answer 23

About the same as a human hair

Fiber-optic cables can be made of glass or plastic.

Question 24

What type of information can fiber-optic cables carry?

Answer 24

Digital information

They can transmit data at very high speeds over long distances.

Question 25

True or false: Fiber-optic cables are affected by **electrical interference**.

Answer 25

FALSE ## Footnote Light is used instead of electricity, making the signal immune to electrical interference.

Question 26

List some **uses** of fiber-optic cables.

Answer 26

* Communications * Medical imaging * Medical treatment * Mechanical engineering inspection ## Footnote Fiber-optic cables have a wide range of applications due to their properties.

Question 27

What is a key advantage of fiber-optic cables in terms of **bandwidth**?

Answer 27

Very high bandwidth ## Footnote This allows them to carry very large amounts of data.

Question 28

In what types of environments is fiber-optic cable **commonly used**?

Answer 28

* Backbone networks * Large enterprise environments * Large data centers * Telephone companies ## Footnote Fiber-optic cables are essential for modern communication infrastructure.