Why use a Network Tester vs a Laptop?

For a cable tech out in the field, a hand-held network tester is worth its weight in gold, both for its functionality and its convenience of usage in a non-office setting. But what if you’re an IT person, and the cables you have to check are all enclosed in a building, a large wiring closet, or someplace very accessible, where you might want to just use your laptop instead? Are there really circumstances where a laptop might be just as good as using a full-blown network tester? If you aren’t sure about this, consider some of the following points:

Source: Blog.T3innovation.com