Knowledge-based systems and behavior-based systems are two types of artificial intelligence systems that can be used for security purposes. Knowledge-based systems use a predefined database of rules, facts, and patterns that distinguish ''bad'' or malicious activities from normal ones. They compare the incoming data with the stored knowledge and flag any anomalies or matches. Behavior-based systems, on the other hand, learn from the observed data and establish a baseline of normal behavior. They then monitor the data for any deviations or changes from the baseline and alert on any suspicious or abnormal activities. Reference:

* Types of Knowledge-Based Systems - Springer

* Difference between Knowledge-based IDS and behavior-based IDS

* Behaviour-based Knowledge Systems: An Epigenetic Path from Behaviour to ...

Type 1 (native or bare metal). Runs directly on the host computer's hardware

Type 2 (hosted). Runs within an operating system environment

'The WildFire cloud-based malware analysis environment is a cyber threat prevention service that identifies unknown malware, zero-day exploits, and advanced persistent threats (APTs) through static and dynamic analysis in a scalable, virtual environment. WildFire automatically disseminates updated protections in near-real time to immediately prevent threats from spreading; this occurs without manual intervention'

Phishing is a type of attack that involves sending fraudulent emails that appear to be from legitimate sources, such as banks, companies, or individuals, in order to trick recipients into clicking on malicious links, opening malicious attachments, or providing sensitive information12.The link to a malware website in the email is an example of a malicious link, which may lead to the installation of malware, ransomware, spyware, or other malicious software on the user's device, or the redirection to a fake website that mimics a legitimate one, where the user may be asked to enter their credentials, personal information, or financial details34.Phishing emails often use social engineering techniques, such as creating a sense of urgency, curiosity, or fear, to persuade the user to click on the link or attachment, or to reply to the email5.Phishing emails may also spoof the sender's address, domain, or logo, to make them look more authentic and trustworthy6.

Whaling, pharming, and spam are not the correct answers for this question.Whaling is a specific type of phishing that targets high-profile individuals, such as executives, celebrities, or politicians, with the aim of stealing their confidential information or influencing their decisions7. Pharming is a type of attack that involves redirecting the user's web browser to a fake website, even if they enter the correct URL, by modifying the DNS server or the user's hosts file. Spam is the unsolicited or unwanted electronic messages, such as emails, texts, or instant messages, that are sent in bulk to a large number of recipients, usually for advertising, marketing, or scamming purposes.Reference:

What is phishing? | Malwarebytes

Phishing - Wikipedia

Don't Panic! Here's What To Do If You Clicked On A Phishing Link

How can Malware spread through Email and How to Protect

What is phishing? How this cyber attack works and how to prevent it ...

Identifying Illegitimate Email Links | Division of Information Technology

What is whaling? | NortonLifeLock

[What is pharming? | NortonLifeLock]

[What is spam? | NortonLifeLock]

Virtualization improves the availability of IT systems and resources by enabling features such as12:

Resource optimization: Virtualization allows multiple virtual instances to share the same physical infrastructure, reducing hardware costs and increasing resource utilization.

Scalability: Virtualization enables rapid provisioning and deprovisioning of virtual instances, allowing organizations to scale up or down their IT capacity according to demand.

Disaster recovery: Virtualization facilitates backup and replication of virtual instances, allowing organizations to restore their IT systems and data in the event of a disaster or outage.

Fault tolerance: Virtualization supports high availability and load balancing of virtual instances, ensuring that IT systems and services remain operational even if one or more virtual instances fail.Reference:Virtualization Benefits: How Virtualization Improves Efficiency and Security | VMware,Virtualization Security - A Complete Guide - CyberExperts.com