Posts

WHAT IS THE DIFFERENCE BETWEEN STRAIGHT THROUGH AND CROSSOVER CABLE?

What is the difference between Straight Through and Crossover Cable? When talking about cable pinouts we often get questions as to the difference in Straight-through, and Crossover cables and the intended use for each type of cable. These terms are referring to the way the cables are wired (which pin on one end is connected to which pin on the other end). T568A and T568B Wiring Standard Basis A RJ45 connector is a modular 8 position, 8 pin connector used for terminating Cat5e or Cat6 twisted pair cable. A pinout is a specific arrangement of wires that dictate how the connector is terminated. There are two standards recognized by ANSI, TIA and EIA for wiring Ethernet cables. The first is the T568A wiring standard and the second is T568B. T568B has surpassed 568A and is seen as the default wiring scheme for twisted pair structured cabling. If you are unsure of which to use, choose 568B. What Is Straight Through Cable? A straight through cable is a type of twisted pair cabl...

WHAT IS A NETWORK IP ADDRESS?

Image
WHAT IS A NETWORK IP ADDRESS? W hat? You don't know what an IP address is used for? Don't worry. Most of the billions of computer users don't know either, and to tell you the truth, that's perfectly alright. Because even though it's your passport to the Internet, you never have to think about it. Here's a "pocket definition" that you can use if someone asked. "It's a network address for your computer so the Internet knows where to send you emails, data and pictures of cats." That puts you way ahead of the curve. In fact, 98% of people on computers right now don't know what an IP address even looks like. Let me explain. Show and tell It always helps to see an IP address example. Let's see yours.  Here it is: 120.29.123.34 Don't get too attached. It's not permanent—you'll find out why in a bit... But for now, somehow you found your way to this website and page about the "IP address." And ...

WHAT ARE THE TYPES OF CABLE?

Image
WHAT ARE THE TYPES OF CABLE?+ Cables are classified into 5 types depending upon their purpose as follows: Ribbon Electric Cables It consists of multiple insulated wires running parallel with one another and are used for transmission of multiple data simultaneously. For example, this is used to connect the CPU with the motherboard and are generally used for interconnection of networking devices. Shielded Cables It consists of 1 or 2 insulated wires which are covered by a woven braided shield or aluminium Mylar foil for better signal transmission and removing irregularities in the frequency of power and external interference in radio. These cables transmit high voltage electric current and are protected by a shield. Twisted Pair Cables It has two or more insulated copper wires which are twisted with each other and are colour-coded. These types of wires are usually used in telephone cables and the resistance to external interference...

WHAT ARE THE DIFFERENT NETWORKING DEVICES?

Image
What are the different networking devices? 1.Firewall -  A firewall is a network security  device that monitors incoming and outgoing network traffic and permits or blocks data packets  based on a set of security rules. Its purpose is to establish a barrier between your internal network and incoming traffic from external sources (such as the internet) in order to block malicious traffic like viruses and hackers. 2. Hub  –  A hub is basically a multiport repeater. A hub connects multiple wires coming from different branches, for example, the connector in star topology which connects different stations. Hubs cannot filter data, so data packets are sent to all connected devices.  In other words, collision domain of all hosts connected through Hub remains one.  Also, they do not have intelligence to find out best path for data packets which leads to inefficiencies and wastage. Types of Hub Active Hub:-  These are the hubs...

WHAT IS A NETWORK TOPOLOGY?

Image
What is a Network Topology?   A network topology is the arrangement of nodes  -- usually switches , routers , or software switch/router features -- and connections in a network, often represented as a graph.  The topology of the network, and the relative locations of the source and destination of traffic flows on the network, determine the optimum path for each flow and the extent to which redundant options for routing exist in the event of a failure. There are two ways of defining network geometry: the physical topology and the logical (or signal) topology. Types of Network Topology:  The mapping of a LAN design is called Topology. There are four categories: Star topology, Bus topology, Ring topology and Mesh topology. Hybrid combinations of these topologies also exist. BUS Topology Bus topology is a network type in which every computer and network device is connected to single cable. When it has exactly two endpoints, then it is called...

HOW TO BE A RESPONSIBLE NETIZEN?

Image
What is a netizen?    A netizen is someone who uses the internet. most of these people who we call netizens are millenials or generation y,but,by simply searching something using the internet you have simply become a netizen .There are also responsibilities you have as a netizen because the internet is a powerful weapon or tool that can be used against another netizen. Tips to be a good netizen: Never give personal information such as your name, address, phone number, password, or financial information to someone you meet over the Internet Never reply to email or text messages that are inappropriate and threatening, or make you feel uncomfortable Report to your parents, teachers, or authorities any email with inappropriate contents that make you feel uncomfortable Never agree to meet with someone you know from the Internet Be careful when someone offers you something for free over the Internet Use websites of established and trusted institutions or com...

WHAT IS A COMPUTER NETWORK?

Image
-is a collection of two or more computers, as well as other related devices, connected together so that information can be exchanged between or among them. Advantages and Disadvantages of Networking           A.      ADVANTAGES                                                                           Reduced costs -everyone in your home or office can share a single printer and a single high speed internet connection at the same time.                             Increased efficiency                                                     ...