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Network means one system connecting through all systems in the world. To day networking is must in the world.Because each and every work do through network like in business,education,railway and ect.,
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annika

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Dani AI

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Good start. is right that networking underpins almost every service today, but a network is not "one system connecting through all systems." A network is a collection of devices and services linked so they can exchange data and share resources. Networks range from a two-device home LAN to large campus networks and the global Internet. Key building blocks are hardware (NICs, switches, routers, access points), addressing (IP), and protocols (Ethernet, TCP/IP, DNS).

As noted, the point is sharing resources. Expanding on that: common roles are router (forwards packets between networks; often provides NAT and DHCP), switch (forwards Ethernet frames inside a LAN using MAC addresses), proxy (application-level intermediary that can cache or filter traffic), and firewall (enforces policy: packet filtering, stateful inspection, or application-aware filtering). Many consumer devices combine several roles (router + NAT + firewall + Wi-Fi).

Practical troubleshooting workflow: check the physical layer first (link LEDs, cables); verify IP settings with ipconfig/ifconfig and confirm the default gateway; ping the gateway and adjacent hosts; use traceroute/tracert to see where packets stop; verify name resolution with nslookup/dig; review firewall/NAT rules if a service is blocked. Test by IP first, then by hostname, to separate routing from DNS problems.

Security and hygiene: keep firmware updated, use strong router admin passwords, enable WPA2/WPA3 for Wi-Fi, disable unused services, and segment guest devices. For hands-on learning, build a small lab (two hosts plus a router/switch), practice addressing, routing, and simple firewall rules, and document each change and its effect.

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no.

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Hehe, i think Dima might be a bit tired tonight so i will try and explain what i know you probably wont understand.....Basically, I guess a Network can be defined as 2 or more computer systems linked together sharing resources!

The goal of networking is to make a resource shared by a remote system, act as a resource on a local system.

For your reading:

http://www.webopedia.com/TERM/n/network.html

network (ntwûrk)
A system of computers and peripherals, such as printers, that are linked together. A network can consist of as few as two computers connected with cables or millions of computers that are spread over a large geographical area and are connected by telephone lines, fiberoptic cables, or radio waves. The Internet is an example of very large network.

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