Allied Globetech Interview Questions and Answers

Data Structures and Algorithms optimize data management and processing, enhancing performance and efficiency in programming tasks.

• Efficient data storage: Arrays, linked lists, and trees help organize data for quick access.

• Optimized searching: Algorithms like binary search reduce time complexity when finding elements in sorted data.

• Improved performance: Using appropriate data structures can significantly speed up operat...read more

Encryption and decryption methods can be applied at various layers of the OSI model to secure data transmission.

• Application Layer: Use of SSL/TLS for encrypting HTTP traffic (HTTPS).

• Transport Layer: Implementation of secure protocols like DTLS for UDP traffic.

• Network Layer: IPsec can encrypt data packets for secure communication over IP.

• Data Link Layer: WPA2 encrypts data in wireless networks to protect against eavesdr...read more

Cryptography encompasses encryption and other techniques for secure communication, while encryption specifically refers to data transformation.

• Cryptography is a broader field that includes techniques like hashing, digital signatures, and key exchange.

• Encryption is a specific method within cryptography that transforms data to prevent unauthorized access.

• Example of encryption: AES (Advanced Encryption Standard) is widely...read more

The TCP/IP suite is a practical framework for networking, while the OSI model is a theoretical framework for understanding network protocols.

• Layer Count: TCP/IP has 4 layers (Application, Transport, Internet, Network Interface) while OSI has 7 layers (Application, Presentation, Session, Transport, Network, Data Link, Physical).

• Model Type: TCP/IP is a protocol suite used in real-world applications, whereas OSI is a conc...read more

UDP is a connectionless protocol that enables fast, low-latency communication, ideal for real-time applications like streaming.

• Connectionless Protocol: UDP does not establish a connection before sending data, reducing latency, which is crucial for real-time applications.

• Low Overhead: UDP has minimal protocol overhead compared to TCP, allowing for faster data transmission, beneficial for streaming audio and video.

• No Gua...read more

JAR files package Java classes and resources, enhancing distribution, versioning, and execution efficiency.

• 1. Packaging: JAR files bundle multiple Java classes and resources (like images and properties files) into a single archive, simplifying distribution.

• 2. Versioning: JAR files can include version information in their manifest, helping manage dependencies and ensuring compatibility.

• 3. Compression: JAR files use ZIP ...read more

Apigee is a platform for developing and managing APIs, enabling secure and scalable connections between applications and services.

• API Management: Apigee provides tools to create, manage, and secure APIs.

• Analytics: It offers insights into API usage and performance, helping businesses optimize their services.

• Security: Apigee includes features like OAuth, API keys, and traffic management to protect APIs.

• Developer Portal: ...read more

Apigee policies are pre-defined rules that manage API behavior, security, and traffic control in API management.

• Traffic Management: Policies like Rate Limiting control the number of requests a user can make in a given timeframe.

• Security: OAuth and API Key validation policies ensure that only authorized users can access the API.

• Transformation: Policies such as JSON to XML conversion allow for data format changes between...read more

APIs, or Application Programming Interfaces, enable different software applications to communicate and share data seamlessly.

• APIs allow for integration between different systems, such as a mobile app accessing a web service.

• RESTful APIs use standard HTTP methods like GET, POST, PUT, and DELETE for operations.

• SOAP APIs rely on XML for message format and are often used in enterprise environments.

• Examples include the Goog...read more

Key Java concepts assessed in interviews include OOP principles, exception handling, collections, and multithreading.

• Object-Oriented Programming (OOP): Concepts like inheritance, encapsulation, polymorphism, and abstraction are fundamental.

• Example: Inheritance allows a subclass to inherit properties and methods from a superclass.

• Exception Handling: Understanding try-catch blocks, custom exceptions, and the importance o...read more

Faced a major issue with project delays due to resource allocation and communication gaps, impacting client satisfaction and team morale.

• Identified the root cause: miscommunication between teams led to overlapping responsibilities.

• Implemented a new project management tool to streamline communication and task assignments.

• Conducted weekly check-ins to ensure alignment and address any emerging issues promptly.

• Resulted in ...read more

Apigee flow manages API requests and responses through a series of configurable steps for security, transformation, and routing.

• Flow consists of a series of steps: request, response, and error handling.

• Policies can be applied at various stages, such as security (OAuth, API key validation).

• Traffic management features include rate limiting and quota enforcement.

• Transformations can be applied using policies like JSON/XML ...read more