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Finally, again referring back to the exhibit in Question 1, what was the effective spread for your 500 share market sell order in Question 3?

By submitting and displaying a limit sell order, a trader is

A market maker that is attracting a lot of customer buy orders

Value traders trade on

A buyer who is quote-matching

Based on the exhibit in Question 1, what is the quoted spread for GOOG in dollars?

Suppose you were thinking of trading Google (GOOG).  You look up the market conditions for the stock you your favorite web-site, and find the following information: If you were to submit a 500 share market sell order, how much would you expect to get for each GOOG share?

In class, we used the following approach to demonstrate that you can use the TS instruction to implement general semaphores. sema_general_S22.JPG Suppose the initial value of value is 2. Please use one example to justify while(!s.hold); is necessary. 

The following solution was proposed to solve the critical section problem. Is it a good solution? Please briefly explain.   interrupt_S22.JPG

Is the following solution correct to solve the Dining Philosopher problem? If yes, what is its weakness? If no, please use ONE EXAMPLE to show why it is not correct.  dining_S22.JPG