Question 1

How many types of modularization are there in c++?

Accepted Answer

There are two types of modular programming.They are interface and implementation.

Question 2

Which design patterns benefit from the multiple inheritance?

Accepted Answer

Adapter and observer pattern

Question 3

Which of the following type casts will convert an Integer variable named amount to a Double type ?

Accepted Answer

(double) amount

Question 4

Give an example for the use of volatile keyword in c++ ?

Accepted Answer

Most of the times compilers will do optimization to the code to speed up the program For example in the below code, int k = 15; while( k == 15) { // Do something } compiler may think that value of 'k' is not getting changed in the program and replace it with 'while(true)', which will result in an infinite loop In actual scenario, the value of 'k' may be getting updated from outside of the program Volatile keyword is used to tell compiler that the variable declared using 'volatile' may be used from outside the current scope, so that compiler won't apply any optimization This matters only in case of multi-threaded applications In the above example if variable 'k' was declared using volatile, compiler will not optimize it In shot, value of the volatile variables will be read from the memory location directly

Question 5

Which of the following is not a correct variable type?

Accepted Answer

A variable provides us with named storage that our programs can manipulate. Each variable in C++ has a specific type, which determines the size and layout of the variable's memory the range of values that can be stored within that memory and the set of operations that can be applied to the variable. The name of a variable can be composed of letters, digits, and the underscore character. It must begin with either a letter or an underscore. Upper and lowercase letters are distinct because C++ is case-sensitive − Basic types of variables: 1. bool Stores either value true or false. 2. char Typically a single octet (one byte). This is an integer type. 3. int The most natural size of an integer for the machine. 4. float A single-precision floating point value. 5. double A double-precision floating point value. 6. void Represents the absence of type. 7. wchar_t A wide character type.

Question 6

What are the tasks of a Business Analyst in Software Development Life Cycle?

Accepted Answer

Generally a business analyst covers several stages in Software Development Life Cycle Like: Client Consulting, Client Requirement Study, Planning for business needs, Business Requirement Documenting, Work on functional requirement, Prepare test data with inputs from end users, Document use case scenarios, Help Testing team with test plan and testing, Help end users with user acceptance testing UAT, Go live and post production support tasks

Question 7

Define what is a Fact, Dimension and Measure ?

Accepted Answer

Fact is key performance indicator to analyze the businessFrom the additive values, which are used to analyse the business by using report generation Dimension is used to analyze the fact, are the non-additive ( text format) values, Which are used to drill down reportsWithout dimension there is no meaning for fact Measure is the quantity of data we create to process

Question 8

What is the difference between ADODC and ADODB?

Accepted Answer

- When u build connection with database through coding, then its ADODBWhen u build connection with database through ADO component, then its ADODC - ADODB is a ActiveXdll and ADODC is a ActiveXcontrol - No Need to bind with controls in ADODB whereas in ADODC we should bind with controls

Question 9

What is the diff between RDO and ADO?

Accepted Answer

RDO is Hierarchy model where as ADO is Object model ADO can access data from both flat files as well as the data bases Ie, It is encapsulation of DAO, RDO , OLE that is why we call it as OLE-DB Technology

Question 10

What is PHP’s configuration file called ?

Accepted Answer

PHP’s configuration file is called phpini

Question 11

I want to print "Hello" even before main() is executed. How will you acheive that?

Accepted Answer

Print the statement inside a static block of code Static blocks get executed when the class gets loaded into the memory and even before the creation of an object Hence it will be executed before the main() method And it will be executed only once

Question 12

What are the restriction imposed on a static method or a static block of code?

Accepted Answer

A static method should not refer to instance variables without creating an instance and cannot use "this" operator to refer the instance

Question 13

What is the difference between Serial and Throughput Garbage collector ?

Accepted Answer

The throughput garbage collector uses a parallel version of the young generation collector and is meant to be used with applications that have medium to large data sets On the other hand, the serial collector is usually adequate for most small applications (those requiring heaps of up to approximately 100MB on modern processors)

Question 14

When do you override hashcode and equals() ?

Accepted Answer

HashCode method return int value So the Hash value is the int value returned by the hash function If you want to do equality check or want to use your object as key in HashMap, we must override hashcode and equals() method

Question 15

Which of the following are capabilities of functions in JavaScript?

Accepted Answer

Accept parameters are capabilities of functions in JavaScript.

Question 16

Explain different layers which define cloud architecture

Accepted Answer

Cloud computing architecture consists of many layers which help it to be more organized and can be managed from one place The layers are as follows: 1 Cloud controller or CLC is the top most level in the hirerachy which is used to manage the virtualized resources like servers, network and storage with the user APIs 2 Walrus is used for the storage and act as a storage controller to manage the demands of the users It maintains a scalable approach to control the virtual machine images and user data 3 Cluster Controller or CC is used to control all the virtual machines for executions the virtual machines are stored on the nodes and manages the virtual networking between Virtual machines and external users 4 Storage Controller or SC provides a storage area in block form that are dynamically attached by Virtual machines 5 Node Controller or NC is at the lowest level and provides the functionality of a hypervisor that controls the VMs activities, which includes execution, management and termination of many instances

Question 17

Which is the subset of SQL commands used to manipulate Oracle Database structures, including tables ?

Accepted Answer

The Data Definition Language (DDL) is used to manage table and index structure. CREATE, ALTER, RENAME, DROP and TRUNCATE statements are the names of few data definition elements.

Question 18

What is webdynpro for ABAP ?

Accepted Answer

Webdynpro for ABAP is SAP web interface model which is used to develop web applications in SAP

Question 19

Which class provides an interface for invoking JavaScript methods and examining JavaScript properties.

Accepted Answer

JSObject

Question 20

What are string functions in VBScript?

Accepted Answer

Asc() - Returns ANSI Character Code Chr() - Returns Character from ANSI Code InStr() - Find a string within another InStrRev() - Find a string within another (Reverse) LCase() - Convert a string to lowercase Left() - Crops a string from left Len() - Determine the length of a string LTrim() - Remove leading spaces from a string Mid() - Crops a string Replace() - Replace a substring within a string Right() - Crops a string from right RTrim() - Remove trailing spaces from a string Space() - Creates a string with the specified number of spaces StrComp() - Compare two strings String() - Creates a repeated character string StrReverse() - Reverse the characters of a string Trim() - Remove both leading and trailing spaces from a string UCase() - Convert a string to uppercase

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