DNS in Detail – Write Up – Fr – TryHackMe

DNS In Detail est une nouvelle box de TryHackMe qui permet d’apprehéender le fonctionnement de DNS ( Domain Name System). Elle est très intéressentate pour  celles et ceux qui veulent savoir comment fonctionne le DNS

Task 1 What is DNS?

  • What does DNS Stand for?

domain name system

Task 2 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

Task 3 Record Types

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

mx

  • What type of record handles IPv6 addresses?

AAAA

Task 4 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

Task 5 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

10.10.10.10