DNS translates names to addresses in Intro to Computing - Flowchart & Logic Diagram

Process Overview

DNS (Domain Name System) helps computers find websites by turning easy names like example.com into numbers called IP addresses that computers understand.

Flowchart

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This flowchart shows how a computer translates a website name into an IP address using DNS, checking local cache first, then querying a DNS server if needed.

Step-by-Step Trace - 8 Steps

Step 1: User types 'example.com' in the browser

Step 2: Computer checks local DNS cache for 'example.com'

Step 3: Since not found locally, computer sends DNS query to DNS server

Step 4: DNS server looks up IP address for 'example.com'

Step 5: DNS server finds IP address 93.184.216.34 and returns it

Step 6: Computer stores IP address in local cache

Step 7: Computer connects to website using IP address

Step 8: Process ends with website loaded

Diagram

User Computer
+----------------+
|  Browser       |
|  DNS Cache     |
+-------+--------+
        |
        v
+----------------+       +----------------+
| Local DNS Cache |<----->| DNS Server     |
+----------------+       +----------------+
        |                        |
        v                        v
  IP Address                 IP Address
  (if cached)                (lookup result)

This diagram shows the user computer checking its local DNS cache first, then querying the DNS server if needed, and receiving the IP address to connect to the website.

Flowchart Quiz - 3 Questions

What does the computer check first when translating a website name?

A DNS server

B Local DNS cache

C The website itself

D Internet connection

Key Result

DNS translates website names into IP addresses by first checking local cache, then querying a DNS server if needed, enabling computers to connect to websites easily.