Type of Computer Network Cable .

Md.Al-amin Hossen

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. T wisted-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.