Self Review Exercises 6

Question 1

SRE 6

Programmers normally use ______

a) programmer-defined methods
b) pre-existing methods
c) both programmer-defined and pre-existing methods
d) neither programmer-defined nor pre-existing methods

Answer 1

c) both programmer-defined and pre-existing methods

Question 2

SRE 6

The ______ statement in a Function sends a value back to the calling method.

a) Return
b) Back
c) End
d) None of the above

Answer 2

a) Return

Question 3

SRE 6

Arguments passed to a method can be _______

a) constants
b) expressions
c) variables
d) all of the above

Answer 3

d) all of the above

Question 4

SRE 6

The ______ is a comma separated list of declarations in a method header.

a) argument list
b) parameter list
c) value list
d) variable list

Answer 4

b) parameter list

Question 5

SRE 6

During debugging, the ______ command executes the remaining statements in the current method and returns program control to the place where the method was called

a) Step Into
b) Step Out
c) Step Over
d) Steps

Answer 5

b) Step Out

Question 6

SRE 6

The debugger command ______ behaves like the Step Over command when the next statement to execute does not contain a method call.

a) Step Into
b) Step out
c) Step over
d) Steps

Answer 6

a) Step Into

Question 7

SRE 6

Instant variables have _____ scope

a) block
b) method
c) class
d) None of the above

Answer 7

c) class

Question 8

SRE 6

Variables with either method scope or block scope are called ______.

a) instance variables
b) local variables
c) class variables
d) hidden variables

Answer 8

b) local variables

Question 9

SRE 6

When Option Strict is set to On, you must explicitly perform _______.

a) narrowing conversions
b) widening conversions
c) all type conversions
d) no conversions

Answer 9

a) narrowing conversions

Question 10

SRE 6

The methods in class _____ are used to perform explicit conversions.

a) Strict
b) Change
c) Convert
d) Conversion

Answer 10

c) Convert

Question 11

SRE 6

The Statement _____ returns a number in the range from 8 to 300.

a) randomObject.Next(8, 300)
b) randomObject.Next(8, 301)
c) 1 + randomObject.Next(8, 300)
d) None of the above

Answer 11

b) randomObject.Next(8, 301)

Question 12

SRE 6

The statement _____ returns a number in the range 15 to 35

a) randomObject.Next(15,36)
b) randomObject.Next(15, 35)
c) 10 + randomObject.Next(5, 26)
d) Both 1 and 3

Answer 12

d) Both 1 and 3

Question 13

SRE 6

Use keyword _____ to define groups of related constants.

a) ReadOnly
b) Enum
c) Constants
d) Enumeration

Answer 13

b) Enum

Question 14

SRE 6

The constants defined in an Enum _____

a) may use repeated values
b) can be accessed using the Enum’s name followed by the member access operator
c) are not required to declare a value
d) All of the above

Answer 14

d) All of the above

Question 15

SRE 6

To clear the image in a PictureBox, set its Image property to _______

a) “”
b) Nothing
c) None
d) Empty

Answer 15

b) Nothing

Question 16

SRE 6

True or False: Conversion of a data item from type Single to type Double is an example of a widening conversion

Answer 16

True

Question 17

SRE 6

True or False: Variables of type Char cannot be converted to type Integer

Answer 17

False. Type Char variables can be converted to type Integer with a narrowing conversion

Question 18

SRE 6

True or False: Option Explicit causes the compiler to check all conversions and requires you to perform an explicit conversion for all narrowing conversions that could cause data loss or program termination

Answer 18

False. Option Strict causes the compiler to check all conversions and requires you to perform an explicit conversion for all narrowing conversions that could cause data loss or program termination. Option Explicit forces you to explicitly declare all variables before they’re used in a program.

Question 19

SRE 6

True or False: When an argument is passed by value, the program makes a copy of the argument’s value and passes the copy to the called method.

Answer 19

True