In $2020,$ Google$$s Security Reliability Engineering team reported an attack on thousands of its IP addresses. These attacks, mounted from three Chinese ISPs, lasted for six months and peaked at a breath$-$taking $2\mathrm{.}5$Tbps$!$ The attacker used several networks to spoof $167$ Mpps $($millions of packets per second$)$ to $180,000$ exposed CLDAP, DNS$,$ and SMTP servers, which then sent large responses to Google. This is an example of:

Question $8$ options:

a$)$

Phishing

b$)$

Ransomware

c$)$

DDoS

d$)$

Eavesdropping