Question 1

Explain about services in Angular.js ?

Accepted Answer

In angularjs services are the singleton objects or functions that are used for carrying out specific tasks It holds some business logic and these function can be called as controllers, directive, filters and so on

Question 2

What do you mean by undeclared and undefined variables ?

Accepted 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

Question 3

Webpages are written using

Accepted Answer

Webpages are written using HTML, (Hyper Text Marup Language). It is used for creating web applications that can be accessed over internet which contain text, graphics and hyperlinks.

Question 4

What is the need of Response.Output.Write() in Asp.net ?

Accepted Answer

ResponseWrite() and ResponseOutputWrite() both does the same work for printing output on the screen But their is a small difference between them As we can write formatted output using ResponseOutputWrite() but ResponseWrite() can't allows the formatted output

Question 5

Which among the following are not the c++ tokens

Accepted Answer

All the above listed options are c++ tokens .They include: - keywords - Identifiers - Constants - Strings - operators

Question 6

How many kinds of classes are there in c++?

Accepted Answer

There are two kinds of classes in c++. They are absolute class and concrete class.

Question 7

Values that are used to end loops are referred to as _____ values.

Accepted Answer

sentinel

Question 8

What is the difference between agglomerative and divisive Hierarchical Clustering?

Accepted Answer

- Agglomerative Hierarchical clustering method allows the clusters to be read from bottom to top and it follows this approach so that the program always reads from the sub-component first then moves to the parent Whereas, divisive uses top-bottom approach in which the parent is visited first then the child - Agglomerative hierarchical method consists of objects in which each object creates its own clusters and these clusters are grouped together to create a large cluster It defines a process of merging that carries on till all the single clusters are merged together into a complete big cluster that will consists of all the objects of child clusters Whereas, in divisive the parent cluster is divided into smaller cluster and it keeps on dividing till each cluster has a single object to represent

Question 9

What is Windows Server Backup?

Accepted Answer

Windows Server Backup is a feature released for the Windows 2008 that provides a number of solutions on backing up the data on your computer in case of a system failure or any other issue Windows Server Backup can backup a few files to a whole server The server backup is accessible through command lines and a management console

Question 10

Convert the expression ((A + B) * C – (D – E) ^ (F + G)) to equivalent Postfix notations.

Accepted Answer

AB + C * DE - FG + ^-

Question 11

What are Spring beans ?

Accepted Answer

The Spring Beans are Java Objects that form the backbone of a Spring application They are instantiated, assembled, and managed by the Spring IoC container These beans are created with the configuration metadata that is supplied to the container Beans defined in spring framework are singleton beans There is an attribute in bean tag named "singleton" if specified true then bean becomes singleton and if set to false then the bean becomes a prototype bean By default it is set to true So, all the beans in spring framework are by default singleton beans

Question 12

Which two method you need to implement for key Object in HashMap ?

Accepted Answer

In order to use any object as Key in HashMap, it must implements equals and hashcode method in Java

Question 13

Exception handling is targeted at

Accepted Answer

Run time error

Question 14

How can we achieve singleton pattern in iOS?

Accepted Answer

The Singleton design pattern ensures a class only has one instance, and provides a global point of access to it The class keeps track of its sole instance and ensures that no other instance can be created Singleton classes are appropriate for situations where it makes sense for a single object to provide access to a global resourceSeveral Cocoa framework classes are singletons They includeNSFileManager, NSWorkspace, NSApplication, and, in UIKit,UIApplication A process is limited to one instance of these classes When a client asks the class for an instance, it gets a shared instance, which is lazily created upon the first request

Question 15

How to declare select-option as a parameter?

Accepted Answer

SELECT-OPTIONS: specify or displayed on the selection screen for the user to enter values Parameters : dname like dept-dname Select-options: dname for dept-dname

Question 16

Explain the difference between Template and Table ?

Accepted Answer

The difference between the table and template is that, table is a dynamic and template is a static

Question 17

How do you put a message in the browser's status bar ?

Accepted Answer

window.status = "put your message here"

Question 18

What happens if the list-style-type property is used on a non-list element like a paragraph?

Accepted Answer

Here the property will be ignored without having any effect on the paragraph

Question 19

What are Child Selectors ?

Accepted Answer

A child selector is used when you want to match an element that is the child of another specific element The parent and child selectors are separated by spaces The following selector locates an unordered list element within a paragraph element and makes a text within that element bold p > ul {font-weight: bold;}

Question 20

Explain what is injector ?

Accepted 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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