TYPES OF CABLE

CABLE-It is medium that connects computer in a network
TYPES OF CABLE

1. TWISTED PAIR CABLE

  

                                 ➤   common type of cable.

                                 ➤   have eight individual copper wire bundled together and covered with an                                                insulting material.

                                ➤   the copper wire is always color-code with a plastic insulation's and they are                                            twisted in pairs of a total of four pairs.

TYPES OD TWISTED PAIR CABLES

a. STP ( SHIELDED TWISTED PAIRS)

    ↣ often in used "noisy" environments where a shield of metallic foil is wrapped around each of the wire pairs, with an additional overall shielding to protect against excessive electromagnetic interference.

b. UTP (UNSDEHIELD TWISTED PAIRS)    

 ↣is the most common form of twisted pair wiring                                                                                   ↣it is less expensice and easier to work with than STP.    

 

2. COAXIAL CABLE

➤   the standard media used by cable TV operators.

                                ➤  It consists of a plastic insulator that separates the solid copper inner                                                        conductor and the woven, copper braid outer conductor

3. FIBER - OPTIC CABLE

➤   has a reflective coating that allows the light beams to travel without outer                                             interference

THE DIFFERENCE BETWEEN STRAIGHT - THROUGH CABLE ANDCROSS - OVER CABLE

STRAIGHT - THROUGH CABLE

*used to connect different type of devices 

(computer - switch), (switch - router), (router - computer).

                              

CROSS - OVER CABLE

*used to connect same type of devices

   (computer - computer), (switch - switch), (router- router)

What are the types of network topology?

LINEAR BUS TOPOLOGY

A bus topology is a network setup in which each computer and network device are connected to a single cable or backbone. The device is connected one after the other in a sequential.

MESH TOPOLOGY

Mesh topology is a type of networking where all nodes cooperate to distribute data among each other.  This topology was originally developed 30+ years ago for military applications.

RING TOPOLOGY

A ring topology is a network configuration in which device connections create a circular data path. Each networked device is connected to two others, like points on a circle. Together, devices in a ring topology are referred to as a ring network.

STAR TOPOLOGY

Star topology is one of the most common network setups. In this configuration, every node connects to a central network device, like a hub, switch, or computer. The central network device acts as a server and the peripheral devices act as clients.

HYBRID TOPOLOGY

Hybrid topology is an integration of two or more different topologies to form a resultant topology which has many advantages (as well as disadvantages) of all the constituent basic topologies rather than having characteristics of one specific topology.

What are the types of computer network?

Personal Area Network (PAN)

A personal area network (PAN) is the interconnection of information technology devices within the range of an individual person, typically within a range of 10 meters. They typically involve a computer, phone, printer, tablet and/or some other personal device like a PDA.

Local Area Network (LAN)

A local area network (LAN) is a group of computers and associated devices that share a common communications line or wireless link to a server. Most often, a LAN is confined to a single room, building or group of buildings, however, one LAN can be connected to other LANs over any distance via telephone lines and radio waves.

Metropolitan Area Network (MAN)

A metropolitan area network (MAN) is a network that interconnects users with computer resources in a geographic area or region larger than that covered by even a large local area network (LAN) but smaller than the area covered by a wide area network (WAN).

Wide Area Network (WAN)

A wide area network (WAN) is a network that exists over a large-scale geographical area. WANs are used to connect LANs and other types of networks together so that users and computers in one location can communicate with users and computers in other locations. Many WANs are built for one particular organization and are private. 

How to be a good netizen?

Being a good netizen is think about you posting, don't abuse the internet, don't fight to the social media.

The web provides users a certain degree of anonymity which makes people say things-mean things that they wouldn’t usually say while having a conversation with someone. Also, abuses are as unwelcome online as they are in the real world. The rule is, if you wouldn’t say something in real life don’t say it online.be calm and be a good netizen.


Would you speak to everyone you met in a loud, harsh tone in real life? Definitely not, it’s simply not civil. Using capitals to say what you have to say online is the same as yelling in real life, it’s rude, annoying and will drive away people.


Do not post sympathetic messages on the wall of a friend who’s just lost her job. Do not have spats with your ex wife online. Do not have conversations that you wouldn’t feel comfortable having in the middle of the day at a crowded cafeteria. Be respectful of people’s privacy.