CompTIA Network+ Study Guide by Todd Lammle

Author:Todd Lammle
Language: eng
Format: epub
ISBN: 9781119432265
Publisher: Wiley
Published: 2018-04-10T14:00:00+00:00

Network Controllers

There are several meanings for the term network controller, but in most cases it refers to a network interface card, or NIC. Newer cards are available that can support both LAN and SAN traffic at the same time. Moreover, these devices usually offload the processing usually placed on the CPU. Special models also perform their own encryption, thus easing the workload further on the CPU.

In other cases you may see this term used to describe a device that controls admission or access to a network. A good example of this is a system that goes beyond simple authentication and ensures that systems are safe and secure before they are allowed to access the network (Network Admission Control). In the next section, you’ll be introduced to another such system, called 802.1X.

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