365691 CCNA Example Exam Questions Example

365691 CCNA Example Exam Questions Example 365691 CCNA Example Exam Questions â€" Assignment Example > Medium Access Control (MAC) is a protocol used to give the link layer of the data in the Ethernet Local Area Network while the WiFi MAC layer is a protocol that allows the sender to avoid collisions of data and transmit small request to send packets by using CSMA. The WiFI MAC layer also allows the sender to send the data frames and other transmissions to different stations. Before transmissions begin the idle time gives a chance for the receiver electronics in each of the nodes to relax after finishing with the previous frames. A node begins its transmission by sending 1’s and 2’s followed by the start of Frame Delimiter. Why MAC address is uniqueIt is unique in the sense that it must be known by the ISP if one is using the Ethernet. The TCP/IP is encapsulated within the protocol that contains the MAC address. When the ISPs hardware has finished using the Ethernet protocol, it will strip it out. The MAC address identify a network device incase a modem is used or ISP. It is al so unique since if one had two Network Interface Cards in the same network with that of the MAC address, one will have problems of the server. MAC is unique not in one field but globally since its three first octets identify the manufacturer in whom each has their own code while the last three is the number given by manufacturer. Switching is a process which is in charge of moving data using internetworking channels. It defines the data storage, the type of information, and the destination in which the data is to be and the time it takes the data to and from the routers while Routing is a process that tries to choose an output and the packets that follows basing on its destination address using different protocols. The routing process consults its routing table which is build using the following sources of information: The network segments in which the router is connected. The static routes that is available in the router configuration. The routing rules and regulations that are f ollowed. The available default routes. Hub is a joining point for all devices used in networking. It is used to join parts of a Local Area Network. Switch is a machine that changes data and distributes the shared information between the parts of the LAN. It functions at the data link layer and the network layer of the OSI Reference Model thus support any packet protocol. Hub is a central meeting point for all the machines used in the network. In a hub, the frame is moved along to every one of its ports and this moving ensures that it reach to the destination that was meant to. A switch is a machine that changes data and distributes the shared information between the parts of the LAN. It also keeps the records of the MAC addresses of all the machines connected to it in which using this information, it can determine which system is using the port. Therefore when it comes in contact with the frame, it knows exactly which port to address it to without taking more network response time s.