mm..really i shocked with the Desing
pattern even that i get in this section 83%..
coz the type of questions was give you problem &
you should answer about 2 suitable design patterns..which no in any mock exam like this kind..
once you find some feature clear to one you will get exhauseted to find the other

.
the thing also was the kind of questions tough the Expression language were so advanced.
Best Wishes to you for you in preparing