Anomaly detection in network-based Intrusion Detection Systems (IDS) involves establishing a baseline of normal behavior for the network or system and then monitoring for deviations from this baseline. The IDS analyzes traffic patterns, system performance, user behavior, and other metrics to detect anomalies that could indicate a potential security breach. This method is particularly effective for identifying new or unknown threats that do not match any known signatures or definitions. By focusing on irregular patterns rather than predefined signatures, anomaly detection can provide early warnings of malicious activities that might otherwise go unnoticed.

IP addressing version 6 (IPv6) is the latest version of IP addressing. IPv6 is designed to solve many of the
problems that were faced by IPv4, such as address depletion, security, auto-configuration, and extensibility.
With the fast increasing number of networks and the expansion of the World Wide Web, the allotted IP
addresses are depleting rapidly, and the need for more network addresses is arising. IPv6 solves this problem,
as it uses a 128-bit address that can produce a lot more IP addresses. These addresses are hexadecimal
numbers, made up of eight octet pairs. An example of an IPv6 address is 45CF: 6D53: 12CD: AFC7: E654:
BB32: 543C: FACE.
Answer option C is incorrect. The subnet masks used in IPv6 addresses are of the same length as those used
in IPv4 addresses.

Asymmetric
Explanation:
Asymmetric encryption is a type of encryption that uses two keys, i.e., a public key and a private key pair for data encryption. The public key is available to everyone, while the private or secret key is available only to the recipient of the message. For example, when a user sends a message or data to another user, the sender uses the public key to encrypt the data. The receiver uses his private key to decrypt the data.

home automation
Explanation:
A home automation gateway is a type of network gateway that provides the added capability to control devices across the Internet. Most gateways plug in to the home broadband router (and a wall outlet for power). When connected to a router that has Internet connectivity, the automation gateway helps in enabling computers and Web-enabled phones to remotely access automation devices at home.