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Answer:Network policy and access services
Explanation: IEEE 802.1X is standard which stands for Port-based Network access control (PNAC). The authentication process of IEEE 802.1X is accessing should be managed through server, presence security factor , policies of network are managed and supported by network policy server .
The device that want to be connected with LAN or wireless LAN get though this authentication process.Other options are incorrect because files services, web servers and active directory domain services are not the factor that considered for authentication in IEEE 802.1X.
There are 6 octects ( 8 bit numbers ) in a MAC address, so there's 256^6 possible addresses.
The correct answer is letter c. exhaust manifolds. Most V-type engines use two exhaust manifolds, one attached to each cylinder head. An exhaust manifold in automative engineering refers to the collection of the exhaust gases from different cylinders into another single pipe.
