What is Transfer Object pattern?
- A behavioral pattern that describes how to distribute the communication between objects.
- A creational pattern that provides a way to create objects without specifying the exact class of object that will be created.
- A structural pattern that defines the ways of organizing and structuring the objects that are being sent from one place to another.
- An architectural pattern that defines a middleware component that is used to transfer data between different systems or software components.
The Transfer Object pattern is a design pattern that is used in the context of remote method invocation (RMI) systems, where an object is transferred from one JVM to another JVM through serialization. The transfer object is an object that carries data between processes.
What is the difference between the Flyweight and Singleton patterns?
- None of the above
- The Flyweight and Singleton patterns are the same
- The Flyweight pattern conserves memory by sharing common data among objects, while the Singleton pattern ensures that only one instance of a class exists in the system
- The Flyweight pattern ensures that only one instance of a class exists in the system, while the Flyweight pattern conserves memory by sharing common data among objects
The Flyweight pattern conserves memory by sharing common data among objects, while the Singleton pattern ensures that only one instance of a class exists in the system
What are the entities of Service Locator pattern?
- Cache, Client, Service, Service Locator, and InitialContext
- Client, Service Locator, Service, InitialContext, and Cache
- InitialContext, Cache, Client, Service Locator, and Service
- Service, InitialContext, Service Locator, Cache, and Client
The entities of the Service Locator pattern are: Service, InitialContext, Service Locator, Cache, and Client. The Service represents the service being located. The InitialContext is responsible for performing the actual lookup of the service. The Service Locator acts as a cache, keeping track of services that have already been looked up. The Cache stores references to services that have already been looked up. The Client is the entity that requires access to the service.
What is the purpose of the Interpreter pattern?
- To create complex objects step by step, using a builder object to abstract the process of creating the object
- To define a grammatical representation for a language and provide an interpreter to deal with this grammar
- To provide a common interface for a group of related classes
- To provide a way to pass requests along a dynamic chain of receivers until one of them handles the request
The Interpreter pattern defines a grammatical representation for a language and provides an interpreter to deal with this grammar
What is an Aggregate Root in the context of Repository Pattern?
- A boundary object around a group of objects, that ensures the consistency of the data
- A special type of object that implements data access logic
- An object that is the only object that should be accessed directly, while all other objects are accessed through it
- An object that is the parent of all other objects in the aggregate and controls the consistency of all objects in the aggregate
An Aggregate Root in the context of Repository Pattern is a boundary object around a group of objects, which ensures the consistency of the data. It is the parent of all other objects in the aggregate and controls the consistency of all objects in the aggregate.
An organization wants to deploy a large fleet of IoT devices and manage their configuration, updates, and monitor their health remotely. Which cloud platform feature would best suit this requirement?
- Device Management
- Edge Computing
- IoT Hub
- Remote Health Monitoring
To manage IoT devices and monitor their health remotely, IoT Hub services in cloud platforms are designed for this purpose. IoT Hubs offer device management, health monitoring, and facilitate communication between IoT devices and cloud services. Device management and health monitoring are essential for large IoT fleets.
While edge computing focuses on processing data at the edge, ________ computing focuses on local area networks and gateways.
- Cloud
- Distributed
- Edge
- Fog
While edge computing focuses on processing data at the edge, "Distributed" computing focuses on local area networks and gateways. Distributed computing refers to the use of multiple interconnected computers and devices to process and manage data across a network, often in a decentralized manner, making it suitable for local network processing.
Which of the following tools is commonly used for IoT development?
- Arduino
- Microsoft Word
- Photoshop
Arduino is a widely used platform for IoT development due to its open-source nature, ease of use, and extensive community support. Microsoft Word, Photoshop, and WhatsApp are not relevant tools for IoT development.
Which standard focuses on the security of connected devices and their networks?
- ISO 9001
- IEEE 802.11
- MQTT
- ISO 27001
ISO 27001 is a widely recognized standard that focuses on information security, including the security of connected devices and their networks. ISO 9001 is related to quality management, IEEE 802.11 is a standard for wireless LANs, and MQTT is a messaging protocol.
Regulatory compliance in IoT primarily ensures:
- Adherence to legal and industry standards
- Compatibility with legacy systems
- Data security
- Environmental sustainability
Regulatory compliance in IoT is crucial to ensure that IoT devices and systems adhere to legal and industry standards. This encompasses privacy regulations, safety standards, and other legal requirements that IoT devices must meet to operate within a given jurisdiction.