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DNS in detail

Learn how DNS works and how it helps you access internet services.

THM Room : https://tryhackme.com/room/dnsindetail

TASK 1 What is DNS?

What does DNS stand for?

Answer : Domain Name System

TASK 2 Domain Hierarchy

What is the maximum length of a subdomain?

Answer : 63

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

Answer : _

What is the maximum length of a domain name?

Answer : 253

What type of TLD is .co.uk?

Answer : ccTLD

TASK 3 Record Types

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

Answer : MX

What type of record handles IPv6 addresses?

Answer : AAAA

TASK 4 Making A Request

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

Answer : TTL

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

Answer : recursive

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

Answer :authoritative

TASK 5 Practical

What is the CNAME of shop.website.thm?

Answer : shops.myshopify.com

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

Answer : THM{7012BBA60997F35A9516C2E16D2944FF}

What is the numerical priority value for the MX record?

Answer : 30

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

Answer : 10.10.10.10

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