Interview Questions

Q:

What are instance variables?

Answer Instance variables are those which are defined at the class level. Instance variables need not be initialized before using them as they are automatically initialized to their default values.
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Subject: Java

0 2230
Q:

Which among the following is an asset for a bank?

A) The loans disbursed by Bank to its customers B) Cash Deposits of Customers
C) Investments made by Bank’s customers in its financial Products D) All of the above
 
Answer & Explanation Answer: A) The loans disbursed by Bank to its customers

Explanation:

Asset means anything that can be converted into cash. Here in banks, the loans disbursed by Bank to its customers is considered as assets because when they are cleared by them, then they are directly converted to cash.

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Filed Under: Accounts Receivable
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

6 2229
Q:

Write a method to fill all the spaces in a string with '%20'

Answer

public class Test {


    public void replaseSpaces(char[] str, int length) {


        int spaceCount = 0, newLength = 0, i = 0;


        for(i = 0; i < length; i++) {


            if (str[i] == ' ') 


                spaceCount++;


        }


 


        newLength = length + (spaceCount * 2);


        str[newLength] = '\0';


        for(i = length - 1; i >= 0; i--) {


            if (str[i] == ' ') {


                str[newLength - 1] = '0';


                str[newLength - 2] = '2';


                str[newLength - 3] = '%';


                newLength = newLength - 3;


            }


            else {


                str[newLength - 1] = str[i];


                newLength = newLength - 1;


            }


        }


        System.out.println(str);


    }


 


    public static void main(String[] args) {


        Test tst = new Test();


        char[] ch = {'t', 'h', 'e', ' ', 'd', 'o', 'g', ' ', ' ', ' ', ' ', ' ', ' '};


        int length = 6;


        tst.replaseSpaces(ch, length);  


    }


}

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0 2229
Q:

Define authentication and authorization.

Answer

Authorization: The process of granting access privileges to resources or tasks within an


application.


Authentication: The process of validating the identity of a user.

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Subject: .NET
Job Role: Software Architect

0 2225
Q:

What is the importance of Doctype in HTML?

Answer

Doctype tag is not a HTML tag, it is just an instruction that is passed to the web browser to check for the information that is being provided by the markup language in which the page is written. Doctype is sometimes referred as Document type definition (DTD) that describes some rules that has to be followed while writing the markup language so to make the web browser understand the language and the content correctly. Doctype is very important to be placed in the beginning of the HTML and before the <HTML> tag to allow easy rendering of the pages that are used.

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Subject: Web Technology

1 2223
Q:

What is Aggregate Functions?

Answer

Aggregate functions perform a calculation on a set of values and return a single value. Aggregate functions ignore NULL values except COUNT function. HAVING clause is used, along with GROUP BY, for filtering query using aggregate values.


Following functions are aggregate functions. 


AVG, MIN CHECKSUM_AGG, SUM, COUNT, STDEV, COUNT_BIG, STDEVP, GROUPING, VAR, MAX. VARP

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Subject: SQL

0 2223
Q:

Could you explain the areas where tuning of database is required?

Answer

The following are the areas of concern for tuning:


- Memory Usage


- Data Storage


- Data Manipulation


- Physical Storage


- Logic Storage


- Network Traffic


Tuning Memory Usage: In Oracle 10g, we can use the Automatic Workload Repository (AWR) toolset to gather and manage statistical data but in case of Oracle 11g, we can use new initialization parameters such as MEMORY_TARGET to further control the overall memory used by Oracle. It helps us to tune the database automatically when we don’t have time to read the AWR report.


Tuning Data Manipulation: There are two ways to tune Data manipulation in Oracle one way is through Conventional Path mode and second is Direct Path mode.


Tuning Physical Storage: We need to tune the physical storage because it limits the disk in database. This can be done by: Distributing I/O, Striping and Mirroring.

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Subject: Oracle

0 2222
Q:

What is the difference between verification and validation?

Answer

Verification: Verification is a process to ensure that the software that is made, matches the original design. In other words, it checks whether the software is made according to the criteria and specification described in the requirement document. It is to check whether you built the product right as per design. It is a low level checking. (It is done in walk-through meetings generally). It checked whether it is made accordingly to the design..


Validation: Validation is a process to check whether the product design fits the client’s need. It checks whether you built the right thing. It checks whether it is designed properly.

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Subject: QA Testing

0 2220