Question 1

Explain static and dynamic memory allocation with an example each.

Accepted Answer

When amount of memory to be allocated is known beforehand ie at the the time of compilation, it is known as Static Memory Allocation Once the memory is allocated statically, it cannot be deallocated during program run So it leads to wastage of storage space Example: int A[100]; When amount of memory to be allocated is not known beforehand, rather it is determined at the time of program run, it is called Dynamic Memory Allocation It leads to efficient utilization of storage space Example: cout << " Enter number of elements: "; cin >> N; int *A = new int[N]; // dynamic memory allocation

Question 2

Why static methods cannot access non static variables or methods?

Accepted Answer

A static method cannot access non static variables or methods because static methods doesnt need the object to be accessed So if a static method has non static variables or non static methods which has instantiated variables they will no be intialized since the object is not created and this could result in an error

Question 3

What is String Args in Java?

Accepted Answer

String Args (String []) is an array of parameters of type String In Java, 'args' contains the supplied command-line arguments as an array of String objects In other words, if you run your program as 'java MyProgram Hello World' then 'args' will contain ["Hello", "World"] When a java class is executed from the console, the main method is what is called

Question 4

The syntax of capture events method for document object is..

Accepted Answer

captureEvents(eventType)

Question 5

What is the role of the JIT compiler in .NET Framework?

Accepted Answer

The JIT compiler is an important element of CLR, which loads MSIL on target machines for execution The MSIL is stored in NET assemblies after the developer has compiled the code written in any NET-compliant programming language, such as Visual Basic and C# JIT compiler translates the MSIL code of an assembly and uses the CPU architecture of the target machine to execute a NET application It also stores the resulting native code so that it is accessible for subsequent calls If a code executing on a target machine calls a non-native method, the JIT compiler converts the MSIL of that method into native code JIT compiler also enforces type-safety in runtime environment of NET Framework It checks for the values that are passed to parameters of any method For example, the JIT compiler detects any event, if a user tries to assign a 32-bit value to a parameter that can only accept 8-bit value

Question 6

Which of the following gives the memory address of the first element in array?

Accepted Answer

array;

Question 7

What JSON framework is supported by iOS (iPhone OS) ?

Accepted Answer

SBJson framework is supported by iOS It is a JSON parser and generator for Objective-C (Objective-C is the primary programming language you use when writing software for OS X and iOS It is a superset of the C-programming language and provides object-oriented capabilities and a dynamic runtime) SBJson provides flexible API's and additional control that makes JSON handling easy

Question 8

What are the features added in iOS 9 ?

Accepted Answer

Intelligent Search and Siri- Intelligent Search is an excellent mechanism to learn user habits and act on that information- open apps before we need them, make recommendations on places we might like and guide us through our daily lives to make sure we’re where we need to be at the right time Siri is a personal assistant to the users, able to create contextual reminders and search through photos and videos in new ways Swiping right from the home screen also brings up a new screen that houses “Siri Suggestions,” putting favorite contacts and apps right on your fingertips, along with nearby restaurant and location information and important news Deeper search capabilities can show results like sports scores, videos, and content from third-party apps, and you can even do simple conversions and calculations using the search tools on your iPhone or iPad Many of the built-in apps have been updated ✓ Notes includes new checklists and sketching features ✓ Maps now offers transit directions ✓ Mail allows for file attachments ✓ Apple Pay is being improved with the addition of store credit cards and loyalty cards ✓ Leading “Passbook” to be renamed to “Wallet” in iOS 9 San Francisco font, wireless CarPlay support An optional iCloud Drive app, built-in two-factor authentication and optional longer passwords for better security Performance improvements

Question 9

What is the purpose of UIWindow object?

Accepted Answer

The presentation of one or more views on a screen is coordinated by UIWindow object

Question 10

Write an SQL Query to check whether date passed to Query is date of given format or not.

Accepted Answer

SQL has IsDate() function which is used to check passed value is date or not of specified format ,it returns 1(true) or 0(false) accordingly SELECT ISDATE('1/08/13') AS "MM/DD/YY"; It will return 0 because passed date is not in correct format

Question 11

Explain electronic payment procedure.

Accepted Answer

- The merchant submits a credit card transaction to the Payment Gateway on behalf of a customer via secure connection from a Web site, at retail, from a MOTO center or a wireless device - Payment Gateway receives the secure transaction information and passes it via a secure connection to the Merchant Bank’s Processor - The Merchant Bank’s Processor submits the transaction to the Credit Card Interchange (a network of financial entities that communicate to manage the processing, clearing, and settlement of credit card transactions) - The Credit Card Interchange routes the transaction to the customer’s Credit Card Issuer - The Credit Card Issuer approves or declines the transaction based on the customer’s available funds and passes the transaction results, and if approved, the appropriate funds, back through the Credit Card Interchange - The Credit Card Interchange relays the transaction results to the Merchant Bank’s Processor - The Merchant Bank’s Processor relays the transaction results to Payment Gateway - Payment Gateway stores the transaction results and sends them to the customer and/or the merchant This communication process averages three seconds or less - The Credit Card Interchange passes the appropriate funds for the transaction to the Merchant’s Bank, which then deposits funds into the merchant’s bank account The funds are typically deposited into your primary bank account within two to four business days

Question 12

A piece of icon or image on a web page associated with another webpage is called

Accepted Answer

hyperlink

Question 13

What is conversion operator ?

Accepted Answer

Class can have a public method for specific data type conversions for example: class B { double value; public B(int i ) operator double() { return value; } }; B BObject; double i = BObject; // assigning object to variable i of type double now conversion operator gets called to assign the value

Question 14

What are the support tickets given in SAP fico module? please give some examples.

Accepted Answer

Support tickets are basically the problems that arise in day to day usage of SAP So any sap fico consultant who is resolving the day to day production issues is actually supporting the tickets

Question 15

How can we display the output directly to the browser?

Accepted Answer

To be able to display the output directly to the browser, we have to use the special tags

Question 16

Difference between %TYPE and %ROWTYPE.

Accepted Answer

%type is used to declare a field of a table while %rowtype is used to declare a record with the same type as specified in that table, view or cursor Example of %type: DECLARE v_EmployeeName empename%TYPE Example of %rowtype DECLARE v_empployee emp%ROWTYPE;

Question 17

What is Interpreter in Java?

Accepted Answer

An Interpreter is a program that reads in as input a source program, along with data for the program, and translates the source program step by step The Java interpreter decodes each lines bytecode and runs a series of machine instructions for that bytecode The JVM takes the byte code and generates machine code The byte code is compiled to machine code, and the machine code is executed

Question 18

Which object is create by UIApplicationMain function at app launch time?

Accepted Answer

The app delegate object is created by UIApplicationMain function at app launch time The app delegate object's main job is to handle state transitions within the app

Question 19

What is meaning of following declaration? int(*p[5])();

Accepted Answer

p is array of pointer to function.

Question 20

When should we use container classes instead of arrays?

Accepted Answer

It is advisable to use container classes of the STL so that you don’t have to go through the pain of writing the entire code for handling collisions, making sure its working well, testing it repeatedly with an overhead of time consumption Suppose you have some data that has values associated with strings and its fields consist of grades> in this situation you can directly use hash table instead of having it created by yourself

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