DNS, covered in chapter 4, is perhaps the shortest topic of the course. If
there is any delay in completing this topic, it will probably be just in
getting comfortable with Python.
The Power-point slides (ch4_DNS.ppt)
and video lecture
cover the basics of how the DNS systems works and discusses some sample
code for doing a query of the DNS system.
Although the programming required for the DNS programming assignment is
fairly simple, this chapter (4) of The Text Book does show some lines of
code that may be new to you. Most notable, are list comprehensions.
(See Lists, Tuples and List Comprehension)