In Section 6.4.2 in the book, we classified design goals into five categories: performance, dependability, cost, maintenance, and end user. Assign one or more categories to each of the following goals:

What will be an ideal response?


• Users must be given a feedback within 1 second after they issue any command. [Performance]
• The TicketDistributor must be able to issue train tickets, even in the event of a network failure.
[Dependability]
• The housing of the TicketDistributor must allow for new buttons to be installed in the event the
number of different fares increases. [Maintenance]
• The AutomatedTellerMachine must withstand dictionary attacks (i.e., users attempting to discover a
identification number by systematic trial). [Dependability]
• The user interface of the system should prevent users from issuing commands in the wrong order. [End
user]

Computer Science & Information Technology

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Objects with _______ scope can be referenced only within the object in which they are defined.

Fill in the blank(s) with the appropriate word(s).

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Which of the following error codes appears if you leave out a required argument?

A) #REF! B) #NUM! C) #VALUE! D) #N/A

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In Java, polymorphism is implemented using late binding.

Answer the following statement true (T) or false (F)

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Which of the following is correct?

A .25 = (2 x 102) + (5 x 101) B. 289 = (2 x 103) + (8 x 101) + (9 x 100) C. 7523 = (7 x 103) + (5 x 102) + (2 x 101) + (3 x 100) D. 0.628 = (6 x 10-3) + (2 x 10-2) + (8 x 10-1)

Computer Science & Information Technology