200-301: Cisco Certified Network AssociateDemo

Controller-based networking abstracts individual devices and manages the network centrally through intent or policy, so it is network-focused, takes policy as the administrator input, and aligns with an allow-list model in which only explicitly permitted behavior is allowed. Traditional networking is managed by configuring individual devices, so it is device-focused, takes configuration as the user input, and typically aligns with a block-list model that denies specifically identified unwanted traffic while allowing the rest.