So during this interview I was asked the following, and I am certain I was floundering. 

  • DNS
  • Subnetting
  • Log collection

What could a principle engineer ask about networking, the questions started out as follows:

  1. How does a webpage get rendered or how do you get to a webpage from your local machine to the server that renders the content?
  2. If you have a network of x how would you subdivide the network? 
  3. You have to collection logs from x number of computers how would you go about it?

So on to what I suspect should be the solution or an appropriate answer

How does a webpage get rendered?

Technically -

  • Open a browser
  • Type in the address to the address bar
  • Request is sent to the server hosting the content
  • Files are streamed over and rendered in the browser.

A little deeper

How does the browser know where the server is?

- Domain Name System or DNS, think of this like the address book for the internet.  

One could certainly go on from here like types of entries in DNS, A Recordds, CNAMEs etc...

Subnetting

Subnetting is all about sub dividing a network.  So IP Address is broken up into 4 8 byte sections.  

 SubnetNotes.png

Comments


Comments are closed