Answer:
DNS settings are incorrect.
Explanation:
DNS servers match domain names to their associated IP addresses.
When working properly, if one types a domain name into a browser, computer contacts current DNS server and asks what IP address is associated with the domain name. The computer then connects to the IP address and retrieves the right web page.
You try to ping a well-known website using the host name, which fails. You then try to ping a known public IP address, which succeeds; this means that DNS settings are not correct.