Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Number of requirements per class.
| Requirement type | Number of requirements |
|---|---|
| Functional requirement (FR) | 444 |
| Availability (A) | 31 |
| Security (SE) | 125 |
| Usability (US) | 85 |
| Look and Feel (LF) | 49 |
| Legal and licensing (L) | 15 |
| Maintainability (MN) | 24 |
| Operability (O) | 77 |
| Performance (PE) | 67 |
| Scalability (SC) | 22 |
| Fault Tolerance (FT) | 18 |
| Portability (PO) | 12 |
| Total | 969 |
