Every computer on a network must have a unique layer 3 address called an ip address. A router works at the network layer of the osi model layer 3 and generally connects a lan to a wan.
Connected computers can share resources like access to the internet printers file servers and others.
Everything you need to know about computer networking. Computers on a network are called nodes. In addition to all the items listed above there s more computer hardware called auxiliary hardware of which a computer might have none or several of some kinds. The connection between computers can be done via cabling most commonly the ethernet cable or wirelessly through radio waves.
Ip addresses are 4 numbers separated by 3 periods like 1 1 1 1. These include computer engineering computer science telecommunication and it. Understand the role of dns and dhcp and wins and know their alternatives like the host and lmhost files and static addressing.
There are a number of disciplines that a computer networking professional must know. You don t need to be a guru just get a general idea about how routers can exchange information about the network. So you need a router to connect to your company s wan or to the internet obviously the most.
Switches routers and wireless access points are the essential networking basics. Through them devices connected to your network can communicate with one another and with other networks like the internet. Switches routers and wireless access points perform very different functions in a network.
Network hardware isn t as clearly defined as some other types of computer hardware. Start with rip because it s easy. The tools of the trade include switches routers and knowledge of access points.
For example many home routers will often act as a combination router switch and firewall. The critical devices within a network infrastructure such as servers routers security appliances and switches require static ip addresses. Easily apply to jobs with an indeed resume.
It is imperative to have a foundation of ip addressing. Information in this article focuses on wireless networking and computer networks which are related to but different than social networking. You need to know what i call the big 3 which are ip address subnet mask and default gateway.
The default gateway is the ip address of the default router that will service ip requests that reside outside of the broadcast domain. Computer networking is the practice of interfacing two or more computing devices with each other for the purpose of sharing data. Find yourself some good networking reference material.
Computer networks are built with a combination of hardware and software. Most computers receive their ip address subnet mask default gateway and dns servers from a dhcp server. A computer network is a set of connected computers.