Use this log file(http://s3.amazonaws.com/istreet-assets/ZqAdaSO9PVo2RgjDKCplRw/log.txt) to answer the following questions. These headers might help you parse the log file: frame.number;frame.time;ip.src;tcp.srcport;ip.dst;tcp.dstport;ip.proto;ip.len;Proto;Info

1.How many times does the most common source IP address appear in the log? Give the count, NOT the IP address!

2.Which IP address (source or destination) appears most commonly in the log? Hint: It appears over 42,000 times.

3.What is the most common (sent the most number of packets) FTP client IP address?

pls. list a step-by-step answer to a none python format(Im not good at python yet). But only use simple command like grep, awk and so on thank you.