Hi. Can you help me ?! 1-what are the differences between IMAP4 and POP3 protocols 2-Explain the differences between a physical topology and a logical topology. 3-Describe how the Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) differ from each other, and provide examples of where each might be used. 4-How should a company deal with the documentation of passwords? 5-What is electromagnetic interference, and how do you avoid its effects? 6-What is the purpose of a main distribution frame or main distribution facility? 7-What is a subnet mask, and how is it used? 8-What are the two different variations of network address translation (NAT)? 9-What is the difference between a port and a socket? (Please note we are not talking about hardware here) 10-What are some of the basic functions of a network router? 11-ARP tables might contain two different types of entries. What are they, and how are they created? 12-How is the TTL (Time to Live) field utilized in IPv4? 13-What is the difference between bandwidth and throughput? 14-What is the biggest limiting factor on fiber-optic cable length? 15-Radiation patterns can be used to classify antennas into what two basic categories? 16-Most wireless devices use one of two technologies to avoid interference. What are these technologies? 17-What is the difference between war driving and war chalking? 18- POP3 allows downloading messages from one's inbox to their local computer while in IMAP one is able to to see all folders on the mail server?! 19- Noise can degrade or distort a signal on a network; what are some of its causes