How can a WAF validate traffic before it reaches a web application?

Which firewall technology can be implemented in all (application, session, transport, network, and presentation) layers of the OSl model?

Who is responsible for conveying company details after an incident?

Management wants to bring their organization into compliance with the ISO standard for information security risk management. Which ISO standard will management decide to implement?

Which phase of vulnerability management deals with the actions taken for correcting the discovered vulnerability?