Consider the following alternative pieces of code for simulating the departure o

Question

Consider the following alternative pieces of code for simulating the departure of a vehicle at the exit from a road. They both work.

Consider the following actions during the execution of this code:

1. entry to the intersection's arrival event service routine

2. exit from the interesection's arrival event service routine

3. entry to the road's departure event service routine

4. exit from the road's departure event service routine

Give the order of these actions as they occur with version a and with version b.

Explanation / Answer

version a:

1. entry to the intersection's arrival event service routine

2. exit from the interesection's arrival event service routine

3. entry to the road's departure event service routine

4. exit from the road's departure event service routine

version b:

1. entry to the intersection's arrival event service routine

3. entry to the road's departure event service routine

4. exit from the road's departure event service routine

2. exit from the interesection's arrival event service routine

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