Well here's the low down Rapture:

The exam tests seven domain areas:

Planning and Implementation (4%)
Installation (12%)
Configuration (15%)
Administration (18%)
System Maintenance (14%)
Troubleshooting (18%)
Identify, Install and Maintain System Hardware (19%)
See the Linux+ exam objectives for more specific information about the CompTIA Linux+ exam content.

Taking the Exam
The CompTIA Linux+ exam consists of 94 questions and is scored on a scale of 100 - 900. The minimum passing score is 655. Ninety minutes are allowed to complete the exam.