attacks are becoming less common in modern operating systems. a. Denial of service
b. SYN flood
c. Buffer overflow
d. None of the above

c. Buffer overflow

Explanation:

In Computer programming, buffer can be defined as an area of memory set aside specially and specifically for holding data or informations.

A type of exploit that relies on overwriting contents of memory to cause unpredictable results in an application is known as buffer overflow. This ultimately implies that, buffer overflow is the process of exceeding the storage capacity of a memory buffer with data, beyond the amount it is designed to hold and therefore overwrites any adjacent memory locations.

Buffer overflow attacks are becoming less common in modern operating systems because the modern operating system usually leaves a space between buffers and randomize the layout of memory through call mapping, as well as through the use of runtime protection.