A Network Intrusion Detection System as the name suggests it "detects" the attackers / vulnerabilities existed in the network system / infrastructure.
A Network Intrusion Prevention Detection System as the name suggests it "prevents" the attackers from hacking the system. While a detection just detects the abnormalities where as a prevention system can prevent them.
The detection system detects the vulnerabilities, security threats and the attackers in the system through the web traffic analyzers and security analyzers.
The prevention system prevents the network from being compromised. It tries to regain the access if already compromised.
Both the NIDS and NIPS have to be coordinated for the full protection of the network.
I <u>believe</u> the answer is the 1820, as the introduction of steam powered printing presses and steam powered paper mills significantly lowered the cost of books to decrease and significantly increased their circulation/availability.
Fault Tolerance basically refers to the feature or capability of a system to keeps on working and performing its operations without interruption in case of a failure.
This failure can be the failure of one or more of its components.
This is beneficial as the system does not stop working or fail completely.
It provides copies of the same system or backup components which can be used when the existing system fails and prevents the loss of information and services.
Accessibility refers to provide equal services for everyone who uses a system. So its not a correct option.
Moore’s law states that the computing speed and power will double every two years so its not a correct option as well.
Anti virus is a software to identify, prevent and remove viruses and malware so it is not a correct option as well.
