ccna 200-301 network simulator ns2 transmission fluid

ccna 200-301 network simulator ns2 transmission fluid.Question Q: A small company in San Jose (US city) has two buildings that need to be interconnected via Ethernet and requires a bandwidth of at least 100 Mbps. the two buildings have different voltages and the cabling should take this into account. ask which of the following transmission media would be used? If you look at the transmission distance, unshielded twisted pair (UTP), shielded twisted pair (STP), coaxial cable (coaxial), and fiberoptic (fiberoptic) can all meet the transmission requirements. But consideringConsidering the outdoor wiring, and the transmission speed should be at least 100Mbps, and the voltage at both ends is different, so the copper cable can not meet the requirements. Fiber optic transmission rate is high, up to several gigabps; strong anti-interference, will not be electromagnetic interference; and will not damage the equipment at both ends due to lightning strikes. Therefore, the correct answer is D, using optical fiber.3.Solution.C QUESTION Q: Referring to the diagram, Switchl has just completed its reboot and self-test procedure. What is the first thing that the switch will do regarding the formation of the switch table (that is, the switch's MAC address table)? Section 2.3.2 of this chapter describes how bridges and switches work. The switch's MAC address table is constructed by learning from the source MAC address. When a data frame from computer A to computer C arrives at switch 1, the first thing the switch does is to learn the source MAC address in the data frame and add computer A's MAC address to the MAC address table, which is the switch table here. The switch table is a MAC address table and does not add IP addresses at all, so A and B are incorrect. The MAC address of computer C is the destination MAC address of the data frame, and switch 1 has to do theforwarding because the MAC address of Computer C is not currently learned in Switch 1's MAC address table, and Switch 1 will flood (that is, broadcast forwarding, forwarding) that data frame to all ports except the receiving port. The question does not include this question, but candidates should still know it.4. solution.Question B Q: Referring to the figure, Switch 1 needs to send data to a computer with MAC address 00b0.d056.efa4. Ask what the switch will do with this data frame. This question is still about how the switch works, and the "showmac-address-table command is used to view the switch's MAC address table, which, as you can see from the figure, does not have MAC address 00b0.d056.efa4 in the switch's MAC address table.Section 2.3.2 of this chapter describes the switchThe switch is divided into three forwarding cases, i.e., the switch uses flooding for unknown unicast frames, multicast frames, and broadcast frames, which are sent to all ports except the port that received this data. Therefore, choose B.62 A5. solution: C The question asks: why does the switch never learn the broadcast address? First, you need to know that the switch learns based on the source MAC address. it binds the source MAC address of the received data frame to this port received, forming an entry into the MAC address table. The so-called source MAC of the data frame