3.6 Compare and contrast general application concepts and uses.
📘CompTIA ITF+ (FC0-U61)
Software licensing is the legal way to control how software is used. It defines who can use the software, how many copies can be installed, and under what conditions. Understanding licenses is essential for IT professionals because using software without a proper license can lead to legal problems, security risks, and non-compliance.
Here are the main types of software licenses you need to know:
1. Single-Use License
- Definition: A license that allows software to be installed and used on only one device.
- IT Example: A company buys Microsoft Office for a single employee’s laptop. Only that laptop can legally run the software.
- Key Point: Cannot be shared with another device or user.
2. Group Use / Site License
- Definition: A license that allows software to be installed on multiple devices within a company or location.
- IT Example: A university buys a site license for Adobe Photoshop. All computers in the computer lab can use Photoshop.
- Key Point: Good for organizations because it reduces cost per user and ensures everyone is legally compliant.
3. Concurrent License
- Definition: A license that allows a limited number of users to access software at the same time, even if more users are in the organization.
- IT Example: A company has 50 employees but buys 10 concurrent licenses for AutoCAD. Only 10 people can use AutoCAD at the same time; others must wait.
- Key Point: Efficient for software that isn’t used all the time by every employee.
4. Open Source vs. Proprietary Software
| Feature | Open Source | Proprietary |
|---|---|---|
| Code Access | You can see, modify, and distribute the code | Source code is private; cannot be modified |
| Cost | Often free | Usually paid |
| Control | High flexibility | Limited flexibility |
| Support | Community-based | Vendor support |
| IT Example | Linux operating system, Apache web server | Windows OS, Microsoft Office |
Key Point: Open source is flexible and cost-effective for IT teams, but proprietary software often comes with official support and guarantees.
5. Subscription vs. One-Time Purchase
| Feature | Subscription | One-Time Purchase |
|---|---|---|
| Payment | Paid regularly (monthly/yearly) | Paid once upfront |
| Updates | Usually included | Might require separate purchase |
| Access | Active as long as payment continues | Permanent access |
| IT Example | Microsoft 365 subscription for cloud access | Microsoft Office 2019 one-time purchase installed on a PC |
Key Point: Subscriptions are good for always updated software and cloud services, while one-time purchases are cheaper long-term for static software.
6. Product Keys and Serial Numbers
- Definition: Unique codes used to activate and verify legitimate software.
- Purpose: Prevents illegal copying and ensures the software is licensed properly.
- IT Example: When installing Windows OS, you must enter a 25-character product key. Without it, the OS may not activate or work fully.
- Key Point: Product keys tie software to a specific license type and are critical for compliance audits.
✅ Quick Exam Tips
- Know the difference between single-use, group/site, and concurrent licenses.
- Understand open source vs. proprietary – focus on code access, cost, and control.
- Remember the distinction between subscription vs. one-time purchase.
- Always associate product keys/serial numbers with software activation and licensing compliance.
