First, capture packets involved in dns queries, and determine the queries generated by your computer and the responses from the server. next, capture only dns packets, and use nslookup to query and answer the following questions: • what packet-capture filter did you use?
for each lookup, answer these questions:

• did your computer generate more than one dns query for each lookup? if so, why?

• what was the response from the dns server for each query?

• was more than one ip address returned? if so, why?

Python write an expression that executes the loop body as long as the user enters a non-negative number. note: if the submitted code has an infinite loop, the system will stop running the code after a few seconds and report "program end never reached." the system doesn't print the test case that caused the reported message. sample outputs with inputs: 9 5 2 -1

Write a method named addall that could be placed inside the hashintset class. this method accepts another hashintset as a parameter and adds all elements from that set into the current set, if they are not already present. for example, if a set s1 contains [1, 2, 3] and another set s2 contains [1, 7, 3, 9], the call of s1.addall(s2); would change s1 to store [1, 2, 3, 7, 9] in some order. you are allowed to call methods on your set and/or the other set. do not modify the set passed in. this method should run in o(n) time where n is the number of elements in the parameter set passed in.

What provides an array of buttons for quick access to commonly used commands and tools