Microsoft Visual Basic 2010 for Windows Web Office and Database Applications Comprehensive 1st Edition by Gary B. Shelly – Test Bank

Chapter 11: Multiple Classes and Inheritance

MODIFIED TRUE/FALSE

1. Concatenation is a major contributor to reliable and robust programs. _________________________

ANS: F, Encapsulation

PTS: 1 REF: 787

2. In a three-tier architecture, only the presentation tier will actually read and write data. _________________________

ANS: F, persistence

PTS: 1 REF: 788

3. Data access tier is another name for the presentation tier. _________________________

ANS: F, persistence

PTS: 1 REF: 788

4. The code in a constructor procedure executes after any other code in the object. _________________________

ANS: F, before

PTS: 1 REF: 793

5. A subclass is always in a “has-a” relationship with the base class. _________________________

ANS: F, is-a

PTS: 1 REF: 797

MULTIPLE RESPONSE

Modified Multiple Choice

1. The ____ tier is a tier within the three-tier structure into which programs are divided.
a. Presentation c. Business
b. Records d. Persistence

ANS: A, C, D PTS: 1 REF: 787

2. In a three-tier architecture, only the persistence classes will actually ____ data.
a. record c. index
b. read d. write

ANS: B, D PTS: 1 REF: 788

3. In a three-tier architecture, the business tier contains the ____ that must occur to fulfill the requirements of the program.
a. logic c. syntax
b. objects d. calculations

ANS: A, D PTS: 1 REF: 788

4. Inheritance allows one class to gain ____ from another class.
a. attributes c. procedures
b. records d. bases

ANS: A, C PTS: 1 REF: 797

5. The WriteLine procedure will ____.
a. write a record to a file c. update an existing record in a file
b. place a line return in the file d. close a StreamWriter

ANS: A, B PTS: 1 REF: 809