9 – 12h Teaching
Teacher:
12 – 13.30h Lunch (Pic-Nic @Espace Dickens)
13.30 – 17h
DNS
What are the nameservers for the .com and .net? Do you see any similarities?
What is the MX record of example.com?
You want to send an e-mail to slashdot.org, which server do you have to connect to?
What are the TXT records of world4you.com?
What do you learn when you google for the 4 characters afer the „v=“ in one of the records?
Where the does canonical name mail.yahoo.com point to?
Ask your local DNS, 8.8.8.8 and 8.8.4.4 for the Address record of www.google.com - what‘s
special?
HTTP/HTTPS
Until when is the certificate of https://www.google.ch valid?
When you browse from https://www.google.ch to https://www.verisign.com/ how does the
address bar of your browser change?
What is the Status Code when you browse to https://www.galaxus.com/ ?
How many Set-Cookie headers are sent by https://www.galaxus.ch/ ?
What webserver and programming-language is serving https://www.galaxus.ch/ ?
What is the content-type of https://api.qrserver.com/v1/create-qr-code/?data=asdf&size=220x220&margin=0 ?