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ccna test sign up.2. switchA receives this frame and performs the learning process, adding MAC address 0000.1111.AAAA and port 1 to the CAM table. Since this is a broadcast, the switch floods it out of ports 2 and 3. 3. the router connected to port 3 receives this frame and processes it at layer 2 because the destination MAC address is a broadcast address. Then, at Layer 3, the switch will drop this frame because it is not a DHCP server.4. the DHCP server connected to port 2 receives this frame, processes it at layer 2 because it is a broadcast, and passes it up to layer 3.5. AssumeThe DHCP server has unused addresses in its address pool, so the DHCP server responds with a DHCP OFFER message containing IP addressing information: IP address 10.0.1.1/24, DNS server address 10.0.2.3, and default gateway address0J.2o This message is encapsulated in an Ethernet frame whose source MAC address is the server's MAC address 0000.1111.CCCC,and the destination MAC address is the PC-A's MAC address 0000.1111. AAAAo6. switch A receives the 0FFER message and performs the learning process, adding MAC address 0000.111l.CCCC and port 2 to the CAM table; then, switch A performs the forwarding function, comparing the destination MAC address 0000.1111.AAAA with the CAM table and finds that this address is associated with port 1, so it forwards the frame out of port 1.After PC-A receives this frame, its NIC compares its MAC address with the destination MAC address and finds that they are identical, so it passes the IP packet up to Layer 3. At Layer 3, PC-A accepts OFFER - sends a DHCP REQUEST message directly to the DHCP server, and Switch A exchanges this frame directly between the source and destination MAC addresses. the PC-A also adds IP addressing information to its NIC configuration.In response, the DHCP server sends a DHCPACK message directly to PC.A, and Switch A again exchanges the frames directly to portOnce loPC-A has obtained the IP addressing information, it can use TCP/IP to communicate with other IP devices.