The Pathauto module automatically generates URL/path aliases for various kinds of content (nodes, taxonomy terms, users) without requiring the user to manually specify the path alias. This allows you to have URL aliases like /category/my-node-title instead of /node/123. The aliases are based upon a "pattern" system that uses tokens which the site architect can change.

The default OSU Drupal 7 general settings for Pathauto are as follows:

Patterns Tab

Settings Tab