Network security: Cisco 200 Series switches provide security and network management features you need tomaintain a high level of security for your business, keep unauthorized users off the network, and protect your businessdata. The switches provide integrated network security to reduce the risk of a security breach, with IEEE 802.1X portsecurity to control access to your network. Denial-of-service (DOS) attack prevention increases network uptime in thepresence of an attack.