Question
Problem: The government now requires that DNSs should now maintain a secret blacklist of IPAs that must not be returned, even if the domain name
Problem: The government now requires that DNSs should now maintain a secret blacklist of IPAs that must not be returned, even if the domain name exists. Without changing your DNS class from problem 1,
define a new class that extends your old class, adding:
a method for adding an IPA to the secret blacklist; and
a private attribute for the blacklist.
Hint: it may be called a blacklist, but is a Python list the most efficient data structure to use here? 2 You must also override the lookup method so that it returns None for blacklisted IPA, even if they do exist. Write a test program that allows the user to test the new class.
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started