Question and Answer Collection

What is DNS

What does DNS stand for?

domain name system


Domain Hierarchy

What is the maximum length of a subdomain?

63


Which of the following characters cannot be used in a subdomain ( 3 b _ - )?

_


What is the maximum length of a domain name?

253


What type of TLD is .co.uk?

cctld


Record Types

What type of record would be used to advise where to send email?

mx


What type of record handles IPv6 addresses?

aaaa


Making A Request

What field specifies how long a DNS record should be cached for?

ttl


What type of DNS Server is usually provided by your ISP?

recursive


What type of server holds all the records for a domain?

authoritative


Practical

What is the CNAME of shop.website.thm?

shops.myshopify.com


What is the value of the TXT record of website.thm?

THM{7012BBA60997F35A9516C2E16D2944FF}


What is the numerical priority value for the MX record?

30


What is the IP address for the A record of www.website.thm?

10.10.10.10