Find the regular expression r3 such that l(r3) = l(r1) ∩ l(r2), where:
• r1 = (ca)*a(c + b)*(ab + ca)*
• r2 = ((b + c)*a(c + a)(c + a)*(c + a + b)*)*

Quincy would like to view the contents of a specific message in his inbox. a portion of his computer screen is shown. what should quincy do in order to complete this task? 1. click on the inbox in the navigation pane, and click on the specific message in the folder pane to display its contents. 2. click on the inbox in the outlook today window, and click on the specific message in the folder pane to display its contents. 3. double-click the message’s header in the outlook today window, and right-click on the specific message to display its contents. 4. double-click the mail option in the navigation pane, and right-click on the specific message to display its contents.

Consider a byte-addressable computer with 16mb of main memory, a cache capable of storing a total of 64kb of data and block size of 32 bytes. (a) how many bits in the memory address? (b) how many blocks are in the cache? (c) specify the format of the memory address, including names and sizes, when the cache is: 1. direct-mapped 2. 4-way set associative 3. fully associative

Jason needs to learn a new web tool. he went through his books to understand more about it. now he wants hands-on experience with using that tool. what would him? jason can use websites where workspace is provided to test the results of your code.