20+ Vladar Technologies Interview Questions and Answers

I used Entity Framework to connect the application with the database.

• Utilized Entity Framework for ORM mapping

• Configured connection string in the application's configuration file

• Used LINQ queries to interact with the database

Inheritance is a mechanism in OOP where a class inherits properties and behaviors from another class.

• Inheritance allows a class to reuse code from another class.

• Types of inheritance include single inheritance, multiple inheritance, multilevel inheritance, hierarchical inheritance, and hybrid inheritance.

• Example: Class B inheriting from Class A - B is a subclass of A.

Count the number of words 'My Name is Nikhil'

• Split the sentence into individual words

• Count the number of words in the sentence

ASP.NET Page Life Cycle is the series of events that occur from the time a page is requested to the time the page is fully rendered and sent to the client.

• Page Request: When a page is requested by a user, ASP.NET creates an instance of the page class.

• Page Initialization: The page's properties are set and controls on the page are initialized.

• Page Load: The page's controls are loaded with data and events are handled.

• Postback Event Handling: If the page is posted back, the event...read more

Abstract class is a class that cannot be instantiated and may contain abstract methods. Interface is a contract that defines methods that a class must implement.

• Abstract class can have abstract methods as well as concrete methods.

• Interface can only have method signatures, no method bodies.

• A class can implement multiple interfaces but can inherit from only one abstract class.

• Example: Abstract class - Animal with abstract method 'eat'. Interface - IShape with method signatures ...read more

A view is created from a model by using a view engine to render the model data into HTML markup.

• Use a view engine like Razor in ASP.NET to create views from models

• Pass the model data from the controller to the view using ViewBag or strongly-typed models

• Use HTML helpers to display model data in the view

ViewBag, ViewData, and TempData are used to pass data from controller to view in ASP.NET MVC.

• ViewBag is a dynamic property that allows you to pass data from controller to view.

• ViewData is a dictionary object that allows you to pass data from controller to view.

• TempData is a dictionary object that allows you to pass data from one controller action to another.

ActionResult and ViewResult are classes in ASP.NET MVC used to return responses to client requests.

• ActionResult is a base class for action results in ASP.NET MVC.

• ViewResult is a type of ActionResult that returns a view to the client.

• ViewResult inherits from ViewResultBase class.

• ActionResult can be used to return different types of responses like JSON, File, Redirect, etc.

• Example: return View();

Static keyword is used to declare a member that belongs to the class itself, rather than to instances of the class.

• Static keyword can be applied to variables, methods, properties, and constructors.

• Static members are accessed using the class name, not an instance of the class.

• Static variables retain their values for the entire duration of the program.

• Static methods can be called without creating an instance of the class.

• Example: public static int count = 0; // static variable

Sealed classes are classes that cannot be inherited or used as a base class.

• Sealed classes are used to restrict inheritance for security or optimization reasons.

• They are marked with the 'sealed' keyword.

• Example: 'sealed class MyClass {}'

ViewModel is a class that is responsible for preparing data to be displayed in a view.

• ViewModel separates the logic of data preparation from the view itself.

• It helps in keeping the views lightweight and focused on display.

• ViewModels are commonly used in MVVM (Model-View-ViewModel) architecture.

• Example: In an e-commerce website, a ProductViewModel may contain product details for display.

VPN is a secure way to connect to a private network over the internet. Private IP ranges are used to assign IP addresses within a network.

• VPN stands for Virtual Private Network

• It allows users to securely access a private network over the internet

• VPN encrypts the data transmitted over the network to ensure security

• Private IP ranges are used to assign IP addresses within a network

• There are three classes of private IP ranges: Class A (10.0.0.0 – 10.255.255.255), Class B (172.16....read more

Answering questions related to crimping, UTP fiber, VLANs, and the difference between hub and switch for a Network Engineer position.

• Crimping RJ45 connectors onto UTP cables is a common task for network engineers. Advantages include ease of installation and cost-effectiveness. Disadvantages include susceptibility to interference and limited distance.

• UTP fiber cables offer higher bandwidth and longer distances than UTP cables. Advantages include immunity to electromagnetic int...read more

Calculate sum of digits in a given number

• Iterate through each digit in the number and add them together

• Use modulus operator to extract each digit

• Convert the number to a string to easily access individual digits

To convince people who have already used another, focus on the unique benefits and advantages of your product or service.

• Highlight the unique features and benefits of your product or service

• Provide evidence of the effectiveness of your product or service

• Offer a trial or demo to showcase the superiority of your product or service

• Address any concerns or objections the customer may have

• Provide excellent customer service to build trust and loyalty

A router is a networking device that forwards data packets between computer networks. A switch is a device that connects devices together on a computer network. WAN and LAN are types of networks. WAN monitoring is the process of monitoring the performance and availability of a wide area network. Troubleshooting is the process of identifying, diagnosing, and resolving problems in a system.

• A router connects multiple networks and forwards data packets between them

• A switch connec...read more

Manual testing fundamentals, regression testing, regression vs retesting, V model, general logic testing

• Manual testing fundamentals include understanding test cases, test plans, and test execution without the use of automation tools

• Regression testing is the process of re-running test cases to ensure that new code changes have not adversely affected existing functionality

• Regression testing differs from retesting in that retesting focuses on verifying that a specific bug has be...read more

Many e-commerce companies use software for various functions such as inventory management, order processing, and customer relationship management.

• Most e-commerce companies use software for inventory management to track stock levels and optimize supply chain processes.

• Order processing software is commonly used to automate the order fulfillment process and streamline operations.

• Customer relationship management (CRM) software is essential for managing customer interactions, trac...read more

VLANs provide segmentation, security, and flexibility in network design.

• VLANs allow for logical segmentation of a network, separating traffic into different broadcast domains.

• This improves network performance and reduces congestion.

• VLANs also provide enhanced security by isolating sensitive data and restricting access to certain areas of the network.

• They also allow for flexibility in network design, making it easier to add, move, or change devices without disrupting the entir...read more

To change font style, use CSS properties like font-family, font-size, font-weight, etc.

• Use the 'font-family' property to specify the font style

• Use the 'font-size' property to specify the size of the font

• Use the 'font-weight' property to specify the thickness of the font

• Use the 'font-style' property to specify the style of the font (italic, oblique, normal)

Java is a high-level programming language known for its portability, security, and object-oriented features.

• Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM)

• It is known for its security features like sandboxing to prevent malicious code execution

• Java is object-oriented, allowing for modular and reusable code

• It supports multithreading, allowing for concurrent execution of tasks

• Popular Java frameworks include Spring, Hibernate, and...read more

MPLS stands for Multiprotocol Label Switching.

• MPLS is a protocol used in computer networks to improve the speed and efficiency of data transmission.

• It operates at the network layer of the OSI model and is used to route packets based on labels instead of IP addresses.

• MPLS allows for the creation of virtual private networks (VPNs) and traffic engineering.

• It provides quality of service (QoS) capabilities by prioritizing certain types of traffic.

• Example: MPLS is commonly used by ...read more

Yes, I am proficient in MS Excel.

• I am able to create and edit spreadsheets

• I can use formulas and functions to analyze data

• I am familiar with creating charts and graphs

• I have experience with data validation and conditional formatting

Yes, I am familiar with mail writing.

• I have experience in writing professional emails for business purposes.

• I understand the importance of clear and concise language in emails.

• I am familiar with email etiquette and formatting.

• I can adapt my writing style to suit different audiences and purposes.

• For example, I have written emails to clients, colleagues, and senior management.

I actively listen to client feedback, address their concerns, and use it to improve our products/services.

• Actively listen to client feedback without interrupting

• Acknowledge their concerns and show empathy

• Take constructive criticism positively and use it to improve

• Implement changes based on feedback to enhance customer satisfaction