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web technology Online Quiz - 118

Description: web technology Online Quiz - 118
Number of Questions: 20
Created by: Aliensbrain Bot
Tags: web technology

Given: 3. class A { } 4. class B extends A { } 5. public class ComingThru { 6. static String s = "-"; 7. public static void main(String[] args) { 8. A[] aa = new A[2]; 9. B[] ba = new B[2]; 10. sifter(aa); 11. sifter(ba); 12. sifter(7); 13. System.out.println(s); 14. } 15. static void sifter(A[]... a2) { s += "1"; } 16. static void sifter(B[]... b1) { s += "2"; } 17. static void sifter(B[] b1) { s += "3"; } 18. static void sifter(Object o) { s += "4"; } 19. } What is the result?

technology web technology

-124
-134
-424
-434
-444
Compilation fails

Given: 3. public class Wind { 4. public static void main(String[] args) { 5. foreach: 6. for(int j=0; j<5; j++) { 7. for(int k=0; k< 3; k++) { 8. System.out.print(" " + j); 9. if(j==3 && k==1) break foreach; 10. if(j==0 || j==2) break; 11. } 12. } 13. } 14. } What is the result?

technology web technology

0 1 2 3
1 1 1 3 3
0 1 1 1 2 3 3
1 1 1 3 3 4 4 4
0 1 1 1 2 3 3 4 4 4
Compilation fails

Given: 3. public class TestDays { 4. public enum Days { MON, TUE, WED }; 5. public static void main(String[] args) { 6. for(Days d : Days.values() ) 7. ; 8. Days [] d2 = Days.values(); 9. System.out.println(d2[2]); 10. } 11. } What is the result? (Choose all that apply.)

technology web technology

TUE
Wed
The output is unpredictable
Compilation fails due to an error on line 4
Compilation fails due to an error on line 6
Compilation fails due to an error on line 8

Given the proper import statement(s), and 13. PriorityQueue pq = new PriorityQueue(); 14. pq.add("2"); 15. pq.add("4"); 16. System.out.print(pq.peek() + " "); 17. pq.offer("1"); 18. pq.add("3"); 19. pq.remove("1"); 20. System.out.print(pq.poll() + " "); 21. if(pq.remove("2")) System.out.print(pq.poll() + " "); 22. System.out.println(pq.poll() + " " + pq.peek()); What is the result?

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2 2 3 3
2 2 3 4
4 3 3 4
2 2 3 3 3
4 3 3 3 3
2 2 3 3 4

What is output to the web page on the second access to the same instance of the following JSP? (Choose one.) Chapter 6 Question 2

Chapter 6 Question 2

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0
1
2
3
4
Page does not translate.

In the UML notation a class can be represented by

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A rectangular box with the name of the class in the box
A rectangular box with the name of the object, a : and the class name that the object belongs to
A rectangular box with the class name prefixed by the word "class"
A thin vertical line with key method calls shown as outward arrows
A rectangular box with an inserted dashed box on the top right corner.

In the UML notation, an object can be represented by

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A comment or explanatory note associated with a class
A rectangular box with the object name and the constraint "{object}" immediatly following it
A rectangular box with the name of the object in the box.
A rectangular box with the name of the object, a : and the class name that the object belongs to.
A thin vertical line with key method calls shown as outward arrows .

Inheritance relationships are represented in the UML notation by:

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nesting of classes
lines with a solid diamond at one end
lines with a hollow diamond at one end
lines with a triangular arrow at one end
lines with a triangular arrow at both ends

Mandatory Method(s) to be defined in servlets

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getSessionBehaviour()
getApplicationId()
getSecurityLevel()
getServletName()

Which one of the following folder is mandatory to be defined to use the ps: custom tags

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TLDs
DDLs
Web-inf
Meta-Inf

Which one is correct?

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Write name here
Write name here
Write name here
Write name here

The file where the context root of the application is specified

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Web.xml
application.xml
ps.xml
Actionconfig.xml

An sequence diagram is

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a time-line illustrating a typical sequence of calls between object function members
a call tree illustrating all possible sequences of calls between class function members
a time-line illustrating the changes in inheritance and instantiation relationships between classes and objects over time
a tree illustrating inheritance and relationships between classes
a directed acyclic graph illustrating inheritance and instantiation relationships between classes and objects

In the UML notation, inside each class in a class diagram are printed

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its name, attributes, operations, and derived classes.
its name, attributes and operations.
its name, and attributes.
its name, and operations.
just its name.

Key elements of the use-case diagram are:

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people, computers
actors, use-cases
people, classes, and objects
uses, cases
scenarios in point form

Aggregation (encapsulation) relationships are represented in the UML notation by

technology web technology

nesting of classes
lines with a solid diamond at one end
lines with a hollow diamond at one end
lines with an arrow at one end
lines without an arrow at either end

In which file will the servlets and the security roles of the application will be defined

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Web.xml
application.xml
ps.xml
Actionconfig.xml

The file where the task flows and the page flows of the application is specified

technology web technology

Map.xml
Web.xml
ps.xml
DynamicContentAliases.xml

Where does the application been first taken in to, when an URL is hit in the browser

technology web technology

Servlet of the appilcation
Deployment descriptor of the appln
Context root of the application
ps.xml file of the application

In the UML notation, parameterized (generic) classes are represented by

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the normal class representation with a dotted arrow pointing at the template parameter classes
the normal class representation but shaded grey.
the normal class representation with a dotted outline and the names of its parameter classes listed on the top right-hand corner.
the normal class representation with a rectangular box in its top left-hand corner.
Its a trick question - parameterized classes can't be specified in the UML notation.

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