CompTIA Security+ Exam Prep

Answer - B - When a program receives more data than the amount it is actually designed to, a buffer overflow results.

Key Takeaway: Buffer overflows occur when an application receives more data than it’s programmed to accept. Buffer overflows can be triggered by inputs that are designed to execute code or alter the way the program operates. A buffer overflow occurs when data written to a buffer corrupts data values in memory addresses adjacent to the allocated buffer due to insufficient bounds checking. This commonly occurs when copying strings of characters from one buffer to another.