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Wipro Technical Interview Questions and Answers PDF with solution/ Most Asked Wipro Interview Questions and Answers:

Here are Wipro Technical Interview Questions and Answers PDF with solution, you can practise them(Wipro Technical Interview Questions and Answers PDF with solution) for your interview for Wipro(Most Asked Wipro Interview Questions and Answers).

Q)List the functionalities of an operating system. (Wipro Technical Interview Questions and Answers PDF with solution)

Solution:

The main functionalities of an operating system are:

1. Process Management: manages creation, execution, and termination of processes.
2. Memory Management: manages allocation and deallocation of memory for running programs.
3. File System Management: provides a file system to store and retrieve data.
4. Input/Output (I/O) Management: manages input/output operations between devices and programs.
5. Security: provides mechanisms for controlling access to computer resources.
6. Interrupt Handling: handles interrupts generated by hardware devices.
7. Resource Allocation: manages allocation and deallocation of system resources.
8. Networking: manages communication between the computer and other devices on a network.

Q)State why is macro faster than functions in the C? (Wipro Technical Interview Questions and Answers PDF with solution)

Solution:

Macros are faster than functions in C because:

• Macros are expanded at compile-time, whereas functions are called at runtime.
• Macros don’t incur the overhead of a function call, such as pushing parameters onto the stack and jumping to the function location.
• Macros are essentially text substitutions, so they don’t have the same overhead as a function call.

Q)What do you mean by the precondition and postcondition to the member function in context of C++? (Wipro Technical Interview Questions and Answers PDF with solution)

Solution:

In C++, a precondition is a condition that must be true before a member function is called, whereas a postcondition is a condition that must be true after the member function has executed.

Precondition: A precondition is a requirement that the caller of the function must ensure is true before calling the function. It’s a contract that the caller must adhere to. If the precondition is not met, the function’s behavior is undefined.

Postcondition: A postcondition is a guarantee that the function makes about its effects on the object’s state after it has executed. It’s a promise that the function makes to the caller about the state of the object after the function has completed.

Q)Explain Java virtual machines. (Wipro Technical Interview Questions and Answers PDF with solution)

Solution:

The Java Virtual Machine (JVM) is a software program that runs Java bytecode, providing a platform-independent environment for Java programs. It loads, links, initializes, executes, and manages memory for Java classes, while also ensuring security and access control.

Q)State some features of JavaScript. (Wipro Technical Interview Questions and Answers PDF with solution)

Solution:

Here are some features of JavaScript:

• Dynamic typing
• First-class functions
• Closures
• Prototypal inheritance
• Object-oriented programming
• Functional programming
• Event-driven programming
• Asynchronous programming
• DOM manipulation
• Ajax support

Q)What is Stack Unwinding in C++? (Wipro Technical Interview Questions and Answers PDF with solution)

Solution:

Stack unwinding in C++ refers to the process of releasing resources and destroying objects when an exception is thrown. It involves calling destructors of local objects in the reverse order of their construction, to ensure proper cleanup and prevent memory leaks.

Q)List some advantages of time slicing in the CPU Scheduling in OS. (Wipro Technical Interview Questions and Answers PDF with solution)

Solution:

The advantages of time slicing in CPU Scheduling in OS are:

• Improved responsiveness: Time slicing allows the operating system to switch between processes quickly, giving the illusion of simultaneous execution and improving responsiveness.
• Increased throughput: By allocating a fixed time slice to each process, the operating system can process more tasks in a given time frame, increasing overall system throughput.
• Better multitasking: Time slicing enables multiple processes to share the CPU, allowing for better multitasking and improved system utilization.
• Reduced starvation: Time slicing ensures that each process gets a fair share of the CPU, reducing the likelihood of starvation (a situation where a process is unable to access the CPU for an extended period).
• Simplified process management: Time slicing simplifies process management by eliminating the need for complex scheduling algorithms and reducing the overhead of context switching.

Q)Why do we use window objects? (Wipro Technical Interview Questions and Answers PDF with solution)

Solution:

In JavaScript, the window object is used to represent the browser’s window. It’s a global object that provides access to various properties and methods related to the browser window.

Here are some reasons why we use the window object:

• Global scope: The window object is the global scope of the JavaScript environment in a browser. It’s the top-most object in the scope chain, and all global variables and functions are properties of the window object.
• Access to browser properties: The window object provides access to various properties related to the browser, such as:
  • window.location: the current URL of the page
  • window.history: the browser’s history
  • window.navigator: information about the browser and its capabilities
  • window.screen: information about the screen and its dimensions
• Access to browser methods: The window object provides access to various methods related to the browser, such as:
  • window.alert(): displays an alert box
  • window.confirm(): displays a confirmation dialog box
  • window.prompt(): displays a prompt dialog box
  • window.open(): opens a new browser window or tab
• Event handling: The window object is often used as an event target for global events, such as:
  • window.onload: fires when the page has finished loading
  • window.onresize: fires when the browser window is resized
  • window.onscroll: fires when the user scrolls the page
• Compatibility: In some cases, using the window object can help with compatibility issues between different browsers or versions.

Q)What are the advantages of indexing in DBMS? (Wipro Technical Interview Questions and Answers PDF with solution)

Solution:

The advantages of indexing in DBMS are:

• Faster query execution: Indexing allows the database to quickly locate specific data, reducing the time it takes to execute queries.
• Improved data retrieval: Indexing enables the database to retrieve data more efficiently, resulting in faster data retrieval and improved overall system performance.
• Reduced disk I/O: By providing a quick way to locate data, indexing reduces the number of disk I/O operations, resulting in improved system performance and reduced wear on disk drives.
• Enhanced data integrity: Indexing can help maintain data integrity by ensuring that data is consistent and accurate.
• Support for complex queries: Indexing enables the database to support complex queries, such as those involving multiple tables or subqueries.
• Improved data security: Indexing can help improve data security by allowing the database to quickly identify and retrieve sensitive data.

Q)Describe the different types of Shells in Linux. (Wipro Technical Interview Questions and Answers PDF with solution)

Solution:

There are several types of shells in Linux. Here are some of the most common ones:

1. Bourne Shell (sh): The original Unix shell, still widely used today for its simplicity and compatibility.
2. Bourne-Again SHell (bash): An improved version of the Bourne shell, offering more features and functionality.
3. C Shell (csh): A shell that uses a C-like syntax, popular among developers and system administrators.
4. Korn Shell (ksh): A shell that combines features from the Bourne and C shells, known for its compatibility and flexibility.
5. Z Shell (zsh): A powerful and customizable shell, popular among power users and developers.
6. Fish Shell: A modern, user-friendly shell that offers features like auto-suggestions and syntax highlighting.
7. Tcsh Shell: An enhanced version of the C shell, offering additional features and functionality.

Q)What is C#? (Most Asked Wipro Interview Questions and Answers)

Solution:

C# (pronounced “C sharp”) is a modern, object-oriented programming language developed by Microsoft as a part of its .NET framework. It is designed to work with the .NET Framework, which provides a large library of pre-built functionality, including support for building Windows desktop and mobile applications, web applications, and games.

C# is a statically-typed language, which means that the data type of a variable is known at compile time, rather than at runtime. This helps catch type-related errors early in the development process, making it easier to write robust and maintainable code.

C# is widely used for building a variety of applications, including:

• Windows desktop applications: C# is commonly used for building Windows desktop applications, including Windows Forms and WPF applications.
• Web applications: C# is used for building web applications using the ASP.NET framework.
• Mobile applications: C# is used for building mobile applications for Windows Phone and other platforms.
• Games: C# is used for building games using the Unity game engine.

Q) List some features of C#. (Most Asked Wipro Interview Questions and Answers)

Solution:

Some key features of C# include:

• Object-oriented programming: C# supports the principles of object-oriented programming (OOP), including encapsulation, inheritance, and polymorphism.
• Type safety: C# is a statically-typed language, which helps prevent type-related errors at runtime.
• Garbage collection: C# uses a garbage collector to automatically manage memory, eliminating the need for manual memory management.
• Multithreading: C# provides built-in support for multithreading, making it easy to write concurrent programs.
• Large standard library: The .NET Framework provides a vast library of pre-built functionality, including support for file I/O, networking, and database access.

Q)State some of the functionalities of EUCALYPTUS in cloud computing. (Most Asked Wipro Interview Questions and Answers)

Solution:

Here are some of the key functionalities of EUCALYPTUS:

1. Infrastructure as a Service (IaaS): EUCALYPTUS provides a complete IaaS solution, allowing users to create and manage virtual machines, storage, and networking resources.
2. Virtualization: EUCALYPTUS supports multiple virtualization platforms, including KVM, Xen, and VMware, allowing users to run a variety of guest operating systems.
3. Scalability: EUCALYPTUS is designed to scale horizontally, allowing users to add or remove resources as needed to meet changing workload demands.
4. High Availability: EUCALYPTUS provides built-in high availability features, including automatic failover and load balancing, to ensure that cloud resources are always available.
5. Security: EUCALYPTUS provides a range of security features, including authentication, authorization, and encryption, to protect cloud resources and data.
6. Storage Management: EUCALYPTUS provides a storage management system that allows users to create and manage storage volumes, including block storage and object storage.
7. Networking: EUCALYPTUS provides a networking system that allows users to create and manage virtual networks, including VLANs and VPNs.
8. Image Management: EUCALYPTUS provides an image management system that allows users to create, manage, and deploy virtual machine images.
9. Auto-scaling: EUCALYPTUS provides auto-scaling features that allow users to automatically scale cloud resources up or down based on changing workload demands.
10. API and CLI: EUCALYPTUS provides a RESTful API and a command-line interface (CLI) that allow users to manage cloud resources programmatically.
11. Support for Multiple Hypervisors: EUCALYPTUS supports multiple hypervisors, including KVM, Xen, and VMware, allowing users to choose the best hypervisor for their needs.
12. Support for Multiple Storage Systems: EUCALYPTUS supports multiple storage systems, including Ceph, Gluster, and NFS, allowing users to choose the best storage solution for their needs.

Q)Define Local storage in HTML 5. (Most Asked Wipro Interview Questions and Answers)

Solution: Local storage in HTML5 is a client-side storage mechanism that allows web applications to store data locally on the user’s browser, similar to cookies, but with a larger storage capacity and more features.

Q)Differentiate between public, static and void. (Most Asked Wipro Interview Questions and Answers)

Solution:

In Java, the main differences between public, static, and void are:

• public:

  • An access modifier that means the method or variable can be accessed from anywhere.
  • It can be accessed from any class, whether it’s in the same package or not.
  • It’s the least restrictive access modifier.

• static:

  • A keyword that means the method or variable belongs to the class, not an instance of the class.
  • It can be accessed without creating an instance of the class.
  • It’s shared by all instances of the class.

• void:

  • A return type that means the method does not return any value.
  • It’s used when a method doesn’t need to return any value to the caller.
  • It’s not an access modifier, but a return type.

Here’s an example to illustrate the differences:

public class MyClass {
public static void myMethod() {
// This method can be accessed from anywhere, belongs to the class, and doesn’t return any value.
}
}

In this example, myMethod is public (can be accessed from anywhere), static (belongs to the class), and void (doesn’t return any value).

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