The first thing that the browser checks is the cache for the DNS record to find the corresponding IP address.
After the technician sets up the internal DNS server for his local network, the first thing that is checked when he types a website into the url of a browser is the cache to look for corresponding IP addresses.
DNS which means Domain Name System is a database that maintains the website name (URL)and the IP address that it is linked to. There is a unique IP address for every URL (universal resource locator).
Internal DNS servers store names and IP addresses for internal or private servers
The characteristics of input/output of PC/workstation can be described as:
Input/Ouput devices works as the interface between the user and the device. It provides us to give commands to our system and get the outputs as per the commands or instructions provided.
Input devices are those which allow us to give instructions or commands to our system like that of a keyboard in a PC, it allows us to write into our system and give commands to it to perform a particular task. these instructions are then converted into signals to be readable by the system(machine language). Another input device is mouse.
Output devices are those which provides us with the desired results converted in the form readable by us. Like monitor of our PC displays the desired results and same goes for printer it prints the results.
There are different input/output files for different operating systems as in 'C' there is a whole library for input/out commands.