Most Asked Cloud Computing Interview Questions | TCS | WIPRO | HCL | Many More

Summary

In this video, the host from Prime Coding Channel discusses the importance of cloud computing for TCS NQT interviews. The explanation covers key topics like the definition of cloud computing, its cost efficiency, how it works through infrastructure and virtualization, and the benefits it offers such as scalability and security. It also touches on challenges like security concerns and downtime. Additionally, the video covers the different types of cloud services—IAAS, PAAS, SAAS, and FAAS—and their real-world applications in business, including companies like Netflix. The session concludes with tips for preparing for cloud computing interviews and joining a supportive community.

Takeaways

• 😀 Cloud computing involves the delivery of computing services over the internet, including storage, processing power, databases, networking, and software.
• 😀 Cloud computing reduces the need for companies to own and maintain expensive infrastructure by renting resources from cloud providers, making it cost-effective.
• 😀 Examples like electricity illustrate cloud computing: you only pay for what you use, eliminating the need to own the infrastructure.
• 😀 Cloud computing relies on virtualization, which divides physical servers into multiple virtual servers for better management and scalability.
• 😀 Data centers, where cloud services are hosted, are highly secure and managed by cloud providers to ensure reliable service.
• 😀 Internet access is crucial for utilizing cloud services, which are hosted virtually in data centers across the world.
• 😀 The main benefits of cloud computing include cost efficiency, scalability, high performance, security, and flexibility for businesses.
• 😀 Challenges of cloud computing include security risks, downtime, reliability issues, high costs without monitoring, and limited management by smaller providers.
• 😀 Cloud services are categorized into four main types: IaaS (Infrastructure as a Service), PaaS (Platform as a Service), SaaS (Software as a Service), and FaaS (Function as a Service), each with its own use cases.
• 😀 Real-world applications of cloud computing include scaling for businesses like Netflix, cloud storage for data access and backup, and facilitating software development and testing.
• 😀 In interviews, structuring your answers with clear definitions, benefits, examples, and types of cloud services will help you demonstrate your knowledge effectively.

Q & A

What is cloud computing?

Cloud computing is the delivery of computing services over the internet, including storage, processing power, databases, networking, software, and analytics. It allows users to access these services without owning the physical infrastructure.

Why do companies need cloud computing?

Companies need cloud computing to avoid the high costs of maintaining their own infrastructure. Instead of owning physical servers, they can rent access to various computing resources, such as applications and storage, from a cloud service provider, reducing costs and improving scalability.

How does cloud computing work?

Cloud computing involves using large numbers of servers located in data centers around the world. The physical infrastructure is virtualized, meaning that multiple virtual servers are created from one physical server. This setup allows businesses to scale their infrastructure based on demand without the need for on-premise hardware.

What are the benefits of cloud computing?

The benefits of cloud computing include cost savings, efficiency, scalability, improved performance, and enhanced security. Companies can scale their resources up or down based on their needs, pay only for what they use, and store vast amounts of data securely in data centers.

What are some challenges of cloud computing?

Challenges of cloud computing include security and privacy concerns, downtime due to server overloads, reliability issues, cost management, and limited management for smaller cloud providers. Hackers can target cloud infrastructure, and if servers go down or are overloaded, it can affect performance.

What are the types of cloud computing services?

The main types of cloud computing services are: 1. Infrastructure as a Service (IaaS) – Provides virtualized computing resources over the internet (e.g., AWS EC2, Google Compute Engine). 2. Platform as a Service (PaaS) – Provides a platform for developing and managing applications (e.g., Google Apps, AWS Elastic Beanstalk). 3. Software as a Service (SaaS) – Offers software applications over the internet on a subscription basis (e.g., Microsoft Office 365). 4. Function as a Service (FaaS) – Allows users to execute code in response to events without managing complex infrastructure (e.g., AWS Lambda).

Can you explain the concept of virtualization in cloud computing?

Virtualization in cloud computing is the process of creating multiple virtual servers from a single physical server. This allows cloud providers to efficiently manage resources and scale infrastructure as needed without requiring more physical hardware.

What are the real-world applications of cloud computing?

Cloud computing has several real-world applications, such as: 1. Content delivery and scaling, as used by companies like Netflix to handle increasing customer demand. 2. Data storage and backup, allowing organizations to store vast amounts of data on the cloud for easy access and recovery. 3. Software development and testing, where developers can access virtual infrastructure to create and test applications from anywhere.

What are the security concerns with cloud computing?

Security concerns with cloud computing include the risk of data breaches, hacking, and unauthorized access to sensitive information stored on cloud servers. However, cloud providers often employ strong security measures such as encryption and hire ethical hackers to ensure the security of their data centers.

How do you manage costs when using cloud computing services?

Managing costs in cloud computing requires careful monitoring of usage. Cloud providers charge based on the amount of resources used (such as storage, processing power, etc.), so it’s important to track your usage and scale down resources when they’re not needed to avoid unexpected high bills.