Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: It #39;s best to keep firewalls from competing Q: I understand that Microsoft #39;s Service Pack 2 for Windows XP, a new update, includes improved firewall protection. I currently use Norton Personal Firewall; will any incompatibility result when both firewalls are installed?

Sci/Tech