Answer to Question 1
TRUE
Explanation: Microsoft Visio shows this as a line with a hollow triangle pointing toward the extended use case and labeled with the <> symbol, extends a use case by adding new behaviors or actions.
CL
Answer to Question 2
TRUE
Explanation: Although there are several variations of hashed files, in most cases the rows are located nonsequentially as dictated by the hashing algorithm. This makes sequential retrieval impractical.
CL