a surprise test given without warning
হঠাৎ নেওয়া পরীক্ষা
"Our teacher gave us a pop quiz today."
"আজ আমাদের শিক্ষক হঠাৎ একটি পরীক্ষা নিলেন।"
the matter is settled or finished
a physical separation between secure and insecure systems
a course of action that seems to lead to undesirable or dang...
directly from the original or reliable source
to introduce something that significantly alters an industry...
to organize or resolve a confusing situation