IgA

IgD

IgE

IgB

Correct Answer: IgB

IgB is not a class of immunoglobulins. Immunoglobulins (Ig) are highly specific and naturally evolved molecules that recognize and eliminate foreign antigens. There are five classes of immunoglobulins, viz. IgM, IgG, IgE, IgA, and IgD. In biotechnology, IgG is the most important class of antibodies.

Which two classes use the Shape class correctly?

A. public class Circle implements Shape { private int radius; }B. public abstract class Circle extends Shape { private int radius; }C. public class Circle extends Shape { private int radius; public void draw(); }D. public abstract class Circle implements Shape { private int radius; public void draw(); }E. public class Circle extends Shape { private int radius; public void draw() { /* code here */ } }F. public abstract class Circle implements Shape { private int radius; public void draw() { /* code here */ } }

B,E

A,C

C,E

T,H

Imagine, you are solving a classification problems with highly imbalanced class. The majority class is observed 99% of times in the training data. Your model has 99% accuracy after taking the predictions on test data. Which of the following is true in such a case?
1. Accuracy metric is not a good idea for imbalanced class problems.
2.Accuracy metric is a good idea for imbalanced class problems.
3.Precision and recall metrics are good for imbalanced class problems.
4.Precision and recall metrics aren't good for imbalanced class problems.

1 and 3

1 and 4

2 and 3

2 and 4

Which of the following command options are displayed when you use the `Router# show frame-relay ?` command?
1. `dlci`
2. `neighbors`
3. `lmi`
4. `pvc`
5. `map`

1 only

2 and 4

3, 4 and 5

All of the above

Which of the following is true?
1. A class can extend more than one class.
2. A class can extend only one class but many interfaces.
3. An interface can extend many interfaces.
4. An interface can implement many interfaces.
5. A class can extend one class and implement many interfaces.

1 and 2

2 and 4

3 and 5

3 and 4

2 and 5

Which of the following is/are true for an abstract class?
1. A class is declared abstract by prefacing the definition with the word abstract.
2. A class is declare abstract by using the keyword implements.
3. It is a class that really isn’t supposed to ever be instantiated but instead serves as a base class.
4. Attempting to instantiate an abstract class results in an error.

Only 2

All of the mentioned

2 and 4

2, 3 and 4

If single inheritance is used with class A and B. A is base class. Then class C, D and E where C is base class and D is derived from C, then E is derived from D. Class C is made to inherit from class B. Which is the resultant type?

Single level

Multilevel

Hybrid

Multiple

interface Base{ boolean m1 (); byte m2(short s);}

which two code fragments will compile?

1. interface Base2 implements Base {}2. abstract class Class2 extends Base { public boolean m1(){ return true; }}3. abstract class Class2 implements Base {}4. abstract class Class2 implements Base { public boolean m1(){ return (7 > 4); }}5. abstract class Class2 implements Base { protected boolean m1(){ return (5 > 7) }}

1 and 2

2 and 3

3 and 4

1 and 3

4 and 5

The class from which the child class inherits is called.
1. Child class
2. Parent class
3. Super class
4. Base class

Only 1

2, 3 and 4

Only 3

2 and 4

Abstract class A has 4 virtual functions. Abstract class B defines only 2 of those member functions as it extends class A. Class C extends class B and implements the other two member functions of class A. Choose the correct option below.

Program won’t run as all the methods are not defined by B

Program won’t run as C is not inheriting A directly

Program won’t run as multiple inheritance is used

Program runs correctly

I. Class A has a higher enrollment than Class B. II. Class C has a lower enrollment than Class B. III.Class A has a lower enrollment than Class C. If the first two statements are true, the third statement is

true

false

uncertain

none