Week 4 Lab

DNS in detail

After watching the video, I was able to answer the questions that followed:

Task 1:

1. What does DNS stand for? Answer: Domain Name System

Task 2:

1. What is the maximum length of a subdomain? Answer: 63
2. Which of the following characters cannot be used in a subdomain ( 3 b _ - )? Answer: _
3. What is the maximum length of a domain name? Answer: 253
4. What type of TLD is .co.uk? Answer: ccTLD

Task 3:

1. What type of record would be used to advise where to send email? Answer: MX
2. What type of record handles IPv6 addresses? Answer: AAAA

Task 4:

1. What field specifies how long a DNS record should be cached for? Answer: TTL
2. What type of DNS Server is usually provided by your ISP? Answer: recursive
3. What type of server holds all the records for a domain? Answer: authoritative

Task 5:

1. What is the CNAME of shop.website.thm? Answer: shops.myshopify.com
2. What is the value of the TXT record of website.thm? Answer: THM{7012BBA60997F35A9516C2E16D2944FF}
3. What is the numerical priority value for the MX record? Answer: 30
4. What is the IP address for the A record of www.website.thm? Answer: 10.10.10.10

Done!