1. Draw a sequence diagram for the scenario for a session with an online stock broker:[5 marks]

Create the diagram using the tool and place it in the document here:

John Doe logs in

System establishes secure communications

System displays portfolio information

John Doe enters a buy order for 100 shares of GE at the market price

System verifies sufficient funds for purchase

System displays confirmation screen with estimated cost

John Doe confirms purchase

System places order on securities exchange

System displays transaction tracking number

John Doe logs out

System establishes insecure communications

System displays good-bye screen

System exchange reports results of trade

2. Given the following scenario: create a sequence diagram using the tool and place it in the document here:[4 marks]

• You plan a day off
• Check the weather
• If the weather is sunny, we may go to beach. There we may float and splash
• If the weather is rainy, we will go to library
• Optionally, at library, person may check out a book and read the pages