TELECOMMUNICATIONS SYSTEMS
COMMUNICATION WIRELESS COMPUTING DEVICES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
‘serves up’ an IP address when you give it a URL
|
|
|
is used to save files across the whole network
|
|
|
directs data packets depending on the destination IP
|
|
|
is needed as the central ‘node’ in a LAN
|
Detailed explanation-1: -DNS servers convert URLs and domain names into IP addresses that computers can understand and use. They translate what a user types into a browser into something the machine can use to find a webpage. This process of translation and lookup is called DNS resolution.
Detailed explanation-2: -The DNS server contains a database of public IP addresses and their corresponding domain names. Every device connected to the internet has a unique IP address that helps to identify it, according to the IPv4 or IPV6 protocols. The same goes for web servers that host websites.
Detailed explanation-3: -DNS, or the Domain Name System, translates human readable domain names (for example, www.amazon.com) to machine readable IP addresses (for example, 192.0.2.44).
Detailed explanation-4: -How DNS works? When you type a URL in the browser, the following steps take place: The browser checks for a DNS record to find the corresponding IP address of the website. Once the browser receives the correct IP address, it will build a connection with the server that matches the IP address to transfer information.
Detailed explanation-5: -If the name gets resolved by the DNS query then the browser will now have the IP address and use it to initiate a connection with the web server at that IP address.