Anko Interview Questions and Answers

IoT uses various protocols such as MQTT, CoAP, HTTP, and AMQP for communication and data transfer.

• MQTT (Message Queuing Telemetry Transport) is a lightweight protocol used for IoT devices with low bandwidth and power constraints.

• CoAP (Constrained Application Protocol) is designed for resource-constrained devices and networks.

• HTTP (Hypertext Transfer Protocol) is used for web-based communication and data transfer.

• AMQP (Advanced Message Queuing Protocol) is a messaging protocol...read more

Angular is a full-fledged framework with batteries included, while React is a library focused on UI components.

• Angular is a full-fledged framework with built-in features like routing, forms, and HTTP client.

• React is a library focused on building UI components and managing state.

• Angular uses two-way data binding, while React uses one-way data flow.

• Angular uses TypeScript by default, while React uses JavaScript (or TypeScript if preferred).

• Angular has a steeper learning curve d...read more

Frontend technologies include HTML, CSS, and JavaScript. Backend technologies include Node.js, Python, and Java.

• Frontend technologies: HTML, CSS, JavaScript

• Backend technologies: Node.js, Python, Java

Access modifiers in Swift are keywords that control the visibility and accessibility of classes, methods, properties, and other entities.

• Access modifiers include public, internal, fileprivate, and private.

• Public allows entities to be accessed from any source file in the module or from another module that imports the defining module.

• Internal restricts access to the current module.

• Fileprivate restricts access to the defining source file.

• Private restricts access to the enclosing...read more

Modbus RTU is binary and Modbus ASCII is text-based. RTU is more efficient and commonly used.

• RTU uses binary encoding while ASCII uses text-based encoding

• RTU is more efficient and commonly used in industrial automation

• ASCII is easier to troubleshoot and can be used for long-distance communication

• RTU has a smaller message size and faster transmission speed

• ASCII has a larger message size and slower transmission speed

Interface is a contract that defines the methods a class must implement, while abstract class can have both implemented and abstract methods.

• Interface methods are public and abstract by default, while abstract class can have abstract and non-abstract methods.

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

• Interfaces are used for full abstraction, while abstract classes are used for partial abstraction.

• Example: Interface - Comparable, Abs...read more

OOPS features include encapsulation, inheritance, polymorphism, and abstraction.

• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Ability to create new classes based on existing classes, inheriting their attributes and methods.

• Polymorphism: Ability to use a single interface for different data types or classes.

• Abstraction: Hiding the implementation details and showing only the necessary features of an object.

MQTT is a lightweight messaging protocol for IoT devices.

• MQTT stands for Message Queuing Telemetry Transport

• It uses a publish-subscribe model for communication

• It is designed for low-bandwidth, high-latency networks

• It is widely used in IoT applications

• It supports Quality of Service (QoS) levels for message delivery