WGU Network and Security- Foundations-C172 Questions and Answers Rated A+

Application Layer(7th layer) Interacts with application programs that incorporate a communication component such as your internet browser and email (provides user interface) Bus Topology The computers share the media (coaxial cable) for data transmission CAT6 (category 6) Twisted-pair cables capable of carrying up to 1000Mbps (1 gigabit) of data up to a length of 100 meters Crossover Transmit and receive signal pairs are crossed to properly align the transmit signal on one device with the receive signal on the other device CSMA/CD Carrier sense multiple access with collision detection is the Ethernet LAN media- access method (used to prevent collisions in wired Ethernet networks) Used in wireless networks for to reduce collisions. Data Link Layer (2nd layer) Layer of the OSI reference model that handles error control (synchronization), and sequencing controls which terminals are sending and receiving. Media access is controlled (MAC) by the Data Link Layer Deterministic Access to the network is provided at fixed time intervals Ethernet, Physical, Hardware, or Adapter Address Other names for MAC address Firewall Protection Used to prevent unauthorized access to your network