Assume an attacker has compromised a number of broadband connected computer to use as zombie systems for a DDOS attack.

Assume an attacker has compromised a number of broadband connected computer to use as zombie systems for a DDOS attack. if the ISP provides a maximun uplink data rate of 512 kbps in ADSL, what is the maximun number of 128-byte ICMP echo request (ping) packets a single zombie computer can send per second ?

How many such zombie systems would the attacker need to flood a target server connected in :

A) A Fast Ethernet

B) A Gigabit Ethernet