We defined the operation of concatenation for sets of strings on p. 10,

ab = { xy | x \in a and y \in b }

are the regular sets closed under concatenation? that is, if a and b are regular sets, is ab guaranteed to be a regular set? prove or show a counterexample.

Consider a direct-mapped cache with 216 words in main memory. the cache has 16 blocks of 8 words each. it is a word-addressable computer (rather than a byte-addressable computer which we normally discuss). (a) how many blocks of main memory are there? (b) what is the format of a memory address as seen by the cache, that is, what are the sizes of the tag, cache block, and block offset fields (if they apply)? (c) to which cache block will the memory reference db6316 map?

In my email i got a message it says a quick message and in message details on who its from its says nicole and under nicole is [email protected] -

These factors limit the ability to attach files to e-mail messages. location of sender recipient's ability to open file size of file type of operating system used