What is the difference between Stateful Packet Filters and Stateless (static) Packet Filters in firewalls?

The semi-major axis is also defined as the 

Which of the following  positions is preferred when performing transvaginal ultrasound?

_________  is the most common congenital anomaly of the uterus.

What was Spain’s main focus in the region it conquered? (Atlantic)

Isovolumetric contraction:

The abnormality on the image demonstrates:  

Which form of renal cystic disease often goes undiagnosed until about the fourth or fifth decade of life, at which time clinical symptoms occur and multiple renal cysts manifest on both kidneys? 

An 18-month-old child presented with the right flank palpable mass. The left kidney was normal.  Most probably the abnormality is:  

Which of the following would be the least likely as a result of acute pyelonephritis?