What is Router and Switch?

In networking process, we can assume with city and country. People in a country can move to another city freely, without any important notice document. Cities in a country also have the same rule/policy, so every peoples know about it. Then people movement in a country just need a switch, that always has been knew what inter city peoples identities and behaves.

And when a people want to go to another country, many conditions should be fulfilled like passport, visa, driving license, etc. They also will setup the clock on their watch. All those process need a router. 

...to be continued...

Byte vs Bit...We Can Get It Wrong...

Byte is a measurement unit size of digital data like text or image or file. Byte also measures how much data transfered through a network or wired connection. Byte equals 8 bit.

Bit is a measurement unit size of a character or single point inside an image. Eight bits equal to one Byte.

With this understanding, we will know that all data will be transfered in bit unit, then accumulated into byte unit.

Imagine a file with size of 15 bytes, if a character size is 1 bit, then the file contains 15 characters inside.

So don't confuse and wrong when read a information that include a byte or bit phrase.

Thank you...