Which type of attack is directed against the network directly?
A.
Denial of Service
B.
phishing
C.
trojan horse
Explanation:
Denial of service refers to willful attempts to disrupt legitimate users from getting access to
the resources they intend to. Although no complete solution exists, administrators can do
specific things to protect the network from a DoS attack and to lessen its effects and prevent
a would-be attacker from using a system as a source of an attack directed at other systems.
These mitigation techniques include filtering based on bogus source IP addresses trying to
come into the networks and vice versa. Unicast reverse path verification is one way to assist
with this, as are access lists. Unicast reverse path verification looks at the source IP address
as it comes into an interface, and then looks at the routing table. If the source address seen
would not be reachable out of the same interface it is coming in on, the packet is considered
bad, potentially spoofed, and is dropped.