Overloading or congesting a system’s resources so that it is unable to provide required services is referred to as:

A.
Swamping

B.
Denial of Service

C.
Bandwidth displacement

D.
A passive attack

E.
ICMP redirect

Explanation:
A denial-of-service attack is aimed at depriving an organization of its resources. They are typically intentional attacks targeted against a specific system or network.