This document discusses different types of computer network cables, including coaxial cable, twisted-pair cables, and fiber optic cables. It describes the key components and features of each cable type. Coaxial cable contains a conductor, insulator, braiding, and sheath. Twisted-pair cables consist of color-coded pairs of insulated copper wires that are twisted. Fiber optic cables transfer data in the form of light and contain an outer jacket, strength member, coating, cladding, and core.

1. Topic : Type of Computer
Network Cables
Course Code : Computer Network
Course Code : CSE-317

2. Submitted To :
Pranab Bandhu Nath
Senior Lecturer
CSE Department
City University, Dhaka
Submitted By:
Name: Md.Al-amin Hossen
ID: 1925102523
Batch: 51th
Program: B.Sc. in CSE

3. Types of Computer Network Cables
• Networking cables are networking hardware used to connect one
network device to other network devices or to connect two or more
computers to share printers scanners etc.
• Many installations use structured cabling practices to improve reliability
and maintainability.

4. Coaxial Cable
• This cable contains a conductor, insulator, braiding, and sheath. The
sheath covers the braiding, the braiding covers the insulation, and the
insulation covers the conductor.
• The following image shows these components.

5. Sheath:
This is the outer layer of the coaxial cable. It protects the cable from physical
damage.
Braided shield:
This shield protects signals from external interference and noise. This shield is
built from the same metal that is used to build the core.
Insulation:
Insulation protects the core. It also keeps the core separate from the braided
shield. Since both the core and the braided shield use the same metal,
without this layer, they will touch each other and create a short-circuit in the
wire.

6. Conductor:
The conductor carries electromagnetic signals. Based on conductor a coaxial
cable can be categorized into two types; single-core coaxial cable and multi-
core coaxial cable.
A single-core coaxial cable uses a single central metal conductor, while
a multi-core coaxial cable uses multiple thin strands of metal wires. The
following image shows both types of cable.

7. Twisted-pair Cables
• The twisted-pair cable was primarily developed for computer networks. This
cable is also known as Ethernet cable. Almost all modern LAN computer
networks use this cable.
• This cable consists of color-coded pairs of insulated copper wires. Every two
wires are twisted around each other to form pair. Usually, there are four
pairs. Each pair has one solid color and one stripped color wire. Solid colors
are blue, brown, green, and orange. In stripped color, the solid color is
mixed with the white color.

8. Types of Twisted-pair Cables
1. Unshielded twisted-pair (UTP):
The most common twisted-pair cable used in communications is referred to
as unshielded twisted-pair (UTP). This is the most commonly used medium
today, because of its usage in the telephone system. This cable can carry both
voice as wells data. However, this results in far greater levels of noise.
2. Shielded twisted-pair (STP):
Apart from the insulator the twisted wire pair itself is covered by metal shield
and finally by the plastic cover. The metal shield prevents penetration of
electromagnetic noise. It also helps eliminate crosstalk an effect wherein one
wire picks up some of the signals travelling on the other wire. This effect can
be felt sometimes during telephone conversations. when we hear other
conversations in the background during our call. The shield prevents such
unwanted sounds.

9. Fiber Optic Cables
A fiber-optic cable contains anywhere from a few to hundreds of optical
fibers within a plastic casing. Also known as optic cables or optical fiber
cables. They transfer data signals in the form of light and travel hundreds of
miles significantly faster than those used in traditional electrical cables.

10. Parts of Fiber optic cables
• Outer Jacket:
Which is the outer most part to protect all parts of the cable.
• Strength Member:
Strength then fibers function to keep the cable from a hard collision.
• Coating:
The costing work to keep the cable from bending.
• Cladding:
The cladding server as a barrier with the main core of fiber optic
cable.
• Core:
Main core server as a medium of data transmission.