Web Technology Questions

Q:

What is a data binding in AngularJS?

Answer

Data binding is an automatic synchronization of data between model and view components. ng-model directive is used in Data binding.

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Subject: Web Technology
Job Role: Software Architect

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Q:

What does an HTML tag do?

A) It specifies formatting and layout instructions for your web page B) It hides programming instructions from view
C) It determines the organizational structure of your Web site D) It connects your web site to an operating environment
 
Answer & Explanation Answer: A) It specifies formatting and layout instructions for your web page

Explanation:
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Q:

Explain what is injector ?

Answer

1.  An injector is a service locator.
2.  It is used to retrieve object instances as defined by provider, instantiate types, invoke methods and load modules.
3. There is a single injector per Angular application, it helps to look up an object instance by its name.

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Q:

Write a c program for bubble sort.

Answer

#include<stdio.h>
int main(){

  int s,temp,i,j,a[20];

  printf("Enter total numbers of elements: ");
  scanf("%d",&s);

  printf("Enter %d elements: ",s);
  for(i=0;i<s;i++)
      scanf("%d",&a[i]);

  //Bubble sorting algorithm
  for(i=s-2;i>=0;i--){
      for(j=0;j<=i;j++){
           if(a[j]>a[j+1]){
               temp=a[j];
              a[j]=a[j+1];
              a[j+1]=temp;
           }
      }
  }

  printf("After sorting: ");
  for(i=0;i<s;i++)
      printf(" %d",a[i]);

  return 0;
}

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Q:

How would you automatically transfer your visitors to a new web page?

Answer

- You can do it with the help of meta tag mentioned below: 


<META HTTP-EQUIV="Refresh" CONTENT="2"; URL="https://www.yourname.com"> 


- Place this tag between <HEAD></HEAD> . 


- It will load yousite.com in 2 seconds.

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Q:

What are meta tags used for?

A) To store information usually relevant to browsers and search engines B) To only store information usually relevant to browsers
C) To only store information about search engines D) To store information about external links
 
Answer & Explanation Answer: A) To store information usually relevant to browsers and search engines

Explanation:
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Q:

What do you mean by undeclared and undefined variables ?

Answer

Difference between undeclared and undefined variables is defined as


Undeclared variables are those that do not exist in a program and are not declared. If the program tries to read the value of an undeclared variable, then a runtime error is encountered.


Undefined variables are those that are declared in the program but have not been given any value. If the program tries to read the value of an undefined variable, an undefined value is returned.

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Q:

Explain about struts dispatch action in DHTML

Answer

DispatchAction is an action that comes with Struts 1.1 or later, that let us combine Struts actions into single class, each with their own method. The org.apache.struts.action.DispatchAction class allows multiple operations to map to the different functions in the same Action class.


For e:g; html:hidden property="dispatch" value="error"/>


<SCRIPT>function set(target) {document. forms[0].dispatch. value=target;}</SCRIPT>

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