10+ PSK Engineering Construction & Co. Interview Questions and Answers

I would try to understand the reasons for the client's decision and work towards addressing their concerns to salvage the deal.

• Initiate a follow-up conversation with the client to understand their reasons for backing out

• Address any concerns or objections raised by the client during the negotiation stage

• Offer alternative solutions or concessions to meet the client's needs and salvage the deal

• Maintain a positive and professional attitude to preserve the relationship with the cl...read more

Aligning organizational culture with strategic goals improves employee performance and business success.

• Clearly communicate strategic goals to all employees

• Lead by example - senior management should embody the desired culture

• Provide training and development opportunities to align employee skills with goals

• Recognize and reward behaviors that support the desired culture

• Encourage open communication and feedback channels

• Regularly assess and adjust culture to ensure alignment with...read more

MVVM focuses on separating the UI from the business logic, while Clean architecture emphasizes separation of concerns and layers.

• MVVM stands for Model-View-ViewModel, where the ViewModel acts as a mediator between the View and the Model.

• Clean architecture divides the app into layers (domain, data, presentation) with clear boundaries and dependencies.

• MVVM is more suitable for small to medium-sized projects, while Clean architecture is better for larger, complex projects.

• MVVM i...read more

Closures are functions that have access to variables in their outer scope.

• Closures are created when a function is defined inside another function.

• The inner function has access to the outer function's variables, even after the outer function has returned.

• Closures can be used to create private variables and functions.

• Example: function outer() { let x = 10; function inner() { console.log(x); } return inner; } const closure = outer(); closure(); // Output: 10

I would focus on implementing a more streamlined sales process to increase efficiency and productivity.

• Implementing a CRM system to track leads and customer interactions

• Providing ongoing training and development for sales team members

• Analyzing sales data to identify trends and opportunities for growth

Activity lifecycle is affected when screen rotates, causing onPause, onStop, onDestroy, onCreate, onStart, and onResume to be called in sequence.

• When screen rotates, onPause is called to pause the activity

• onStop is called next to stop the activity

• onDestroy is called to destroy the activity

• onCreate is called to recreate the activity

• onStart is called to start the activity

• onResume is called to resume the activity

CallStack is a data structure that stores function calls in a stack. Memory Heap is a region of memory where objects are stored.

• CallStack is a LIFO data structure that keeps track of function calls.

• Memory Heap is a large region of memory where objects are allocated.

• Variables and function calls are stored in CallStack while objects are stored in Memory Heap.

• When a function is called, it is added to the top of the CallStack. When it returns, it is removed from the stack.

• Memory ...read more

Redux is a predictable state container for JavaScript apps.

• Redux is a state management library for JavaScript applications.

• It provides a centralized store to manage the state of an application.

• Redux follows a unidirectional data flow pattern.

• It allows for easy debugging and testing of an application's state.

• Redux can be used with React, Angular, Vue, and other JavaScript frameworks.

Viewmodel is used to store and manage UI-related data in a lifecycle-conscious way.

• Viewmodel survives configuration changes like screen rotations

• Prevents memory leaks by separating UI data from UI controller

• Improves app performance by reducing the need to reload data

Immutable class is a class whose instances cannot be modified after creation.

• Immutable classes have all their fields marked as final, so they cannot be changed once initialized.

• Immutable classes typically have no setter methods, only getter methods.

• Examples of immutable classes in Java include String, Integer, and LocalDate.

SharedViewModel is a class that is used to share data between fragments in an Android app.

• SharedViewModel is a part of the Android Architecture Components.

• It allows fragments to communicate with each other without directly referencing each other.

• SharedViewModel is typically used to share data between fragments in a single activity.

React JS is a JavaScript library for building user interfaces.

• Virtual DOM for efficient updates

• Component-based architecture for reusability

• JSX syntax for easy rendering

• Unidirectional data flow for predictable state management

• Server-side rendering for SEO optimization

Designing an efficient image loading library for Android applications.

• Support for loading images from various sources like network, disk, and resources.

• Caching mechanism to store and retrieve images for faster loading.

• Ability to handle image resizing and scaling for different screen sizes.

• Support for asynchronous loading to prevent UI thread blocking.

• Integration with popular image loading libraries like Picasso or Glide for additional features.

• Option to cancel image loading r...read more

ViewModel is a class that stores and manages UI-related data in a lifecycle-conscious way.

• ViewModel survives configuration changes such as screen rotations.

• ViewModel is not destroyed when the activity is destroyed, allowing data to be retained.

• ViewModel is typically used to hold and manage data for the UI.

Abstract classes can have both abstract and non-abstract methods, while interfaces can only have abstract methods.

• Abstract classes can have constructors, interfaces cannot

• A class can only extend one abstract class, but can implement multiple interfaces

• Abstract classes can have instance variables, interfaces cannot

• Interfaces are used to achieve abstraction and provide a contract for implementing classes

• Example of abstract class: public abstract class Animal { public abstract v...read more

Mobile application testing faces challenges due to device fragmentation, network connectivity, and security concerns.

• Device fragmentation: Testing on multiple devices with different screen sizes, resolutions, and operating systems.

• Network connectivity: Testing in different network conditions like 2G, 3G, 4G, and Wi-Fi.

• Security concerns: Testing for vulnerabilities like data leakage, unauthorized access, and malware.

• Usability testing: Ensuring the app is user-friendly and easy...read more

Redux is a state management library for JavaScript applications.

• Redux stores the entire state of the application in a single store.

• Actions are dispatched to update the state in the store.

• Reducers are pure functions that take the current state and an action, and return a new state.

• Components can subscribe to the store to receive updates when the state changes.

API testing is a type of software testing that involves testing APIs to ensure they meet functional, performance, and security requirements.

• API testing involves testing the functionality of APIs, including their ability to handle different types of requests and responses

• API testing also involves testing the performance of APIs, including their response time and ability to handle high volumes of traffic

• API testing also involves testing the security of APIs, including their abi...read more