Q1: Which of the following refers to the associative memory?

ANS:C - there is no need for an address i.e. the data is used as an address

Associative Memory is also known as Content Addressable Memory.

Imagine that you were writing a blog engine. Instead of storing blog entries in an array of some sort, addressed by memory address or index into the array, you just create nodes out in space. You don't address these nodes with memory addresses. Rather, you attach information to the node like:This is of type 'blog entry. The author is so-and-so. This is the date it was created. These are the categories it belonged to. Stuff like that.

When you want to retrieve an entry by date, you tell the Associative Memory that you want it to give you back Nodes that are of type 'blog entry, ' for which the date they were created on is X. The Associative Memory then looks through it's stores for any node that fits that shape, and then returns it to you.