Network Access Control (NAC) is an approach to computer security that attempts to unify endpoint security technology (such as antivirus, host intrusion prevention, and vulnerability assessment), user or system authentication and network security enforcement.
Load Balancing for High-Availability of Connectivity. Link load balancing provides advanced failover and bandwidth management for multiple WAN connections to assure continuous operation of enterprise applications.
CCTV (closed-circuit television) is a TV system in which signals are not publicly distributed but are monitored, primarily for surveillance and security purposes.
A router is used to connect two different networks, weather it is private or public (Internet), so users can access resources across networks.
A Network Switch is a Hardware appliance with a fixed number of Network Ports (Copper/Fibre) that can connect multiple Network devices.
WAN optimization, is a technologies and techniques used to maximize the efficiency of data flow across a wide area network (WAN). The goal of optimization is to increase the speed of access to critical applications and information.