Cognizant GenC Technical Assessment- Cloud Fundamental MCQs – Set 4
1. What is a primary advantage of using a hybrid cloud over a public cloud?
Correct Answer: b) Flexibility to balance sensitive and non-sensitive workloads
Explanation: A hybrid cloud combines private and public clouds, allowing organizations to keep sensitive workloads on a secure private cloud while leveraging the scalability of a public cloud for non-sensitive tasks. Public clouds may have lower costs (option a) but lack the same level of control, while options c and d are not accurate as resources are not unlimited and management can be more complex in hybrid setups.
2. Which of the following is a key feature of SaaS applications?
Correct Answer: b) Automatic updates and maintenance by the provider
Explanation: SaaS (Software as a Service) applications are managed by the provider, including automatic updates and maintenance, allowing users to focus on using the software. Options a and d apply to IaaS or PaaS, while option c contradicts the cloud-based nature of SaaS, which does not require local installation.
3. What does the term “multi-tenancy” mean in cloud computing?
Correct Answer: a) Multiple users accessing the same physical server
Explanation: Multi-tenancy in cloud computing refers to multiple users or tenants sharing the same physical server and resources, with isolation to ensure data security. Option b describes a different concept, while options c and d are unrelated to multi-tenancy (they describe data center distribution and multi-cloud strategies, respectively).
4. Which cloud provider offers the “Azure Blob Storage” service?
Correct Answer: b) Microsoft Azure
Explanation: Azure Blob Storage is a service offered by Microsoft Azure for storing unstructured data like text or binary files. AWS offers S3, Google Cloud has Cloud Storage, and IBM Cloud has its own object storage service, but Azure Blob Storage is specific to Microsoft Azure.
5. What is a major benefit of using containers in cloud computing?
Correct Answer: b) Portability across different environments
Explanation: Containers package applications with their dependencies, ensuring they can run consistently across different environments (e.g., development, testing, production). Options a, c, and d are incorrect as containers reduce hardware dependency, improve scalability, and typically lower costs compared to traditional virtual machines.
6. What does the acronym “PaaS” stand for in cloud computing?
Correct Answer: a) Platform as a Service
Explanation: PaaS stands for Platform as a Service, a cloud model that provides a platform for developing, running, and managing applications without managing the underlying infrastructure. Options b, c, and d are incorrect as they do not represent the standard definition of PaaS.
7. Which of the following is a potential risk of using a public cloud?
Correct Answer: b) Shared resources leading to security concerns
Explanation: Public clouds involve shared resources among multiple users, which can lead to security concerns if not properly managed (e.g., data breaches or unauthorized access). Options a, c, and d are benefits of public clouds, not risks, as they offer scalability, cost savings, and easier maintenance.
8. What is the purpose of auto-scaling in cloud computing?
Correct Answer: b) To automatically adjust resources based on demand
Explanation: Auto-scaling in cloud computing automatically adjusts the number of resources (like servers) based on current demand, ensuring performance during peak times and cost savings during low usage. Options a, c, and d are incorrect as auto-scaling does not permanently reduce servers, limit access, or increase costs unnecessarily.
9. Which of the following is an example of a serverless computing service?
Correct Answer: b) AWS Lambda
Explanation: AWS Lambda is a serverless computing service that allows users to run code without provisioning or managing servers. Options a, c, and d (AWS EC2, Azure Virtual Machines, and Google Compute Engine) are IaaS offerings that involve managing virtual machines, not serverless computing.
10. What is the main purpose of a cloud service level agreement (SLA)?
Correct Answer: b) To define the expected performance and availability
Explanation: A cloud SLA (Service Level Agreement) defines the expected performance, availability, and responsibilities between the provider and the customer, ensuring accountability. Options a, c, and d are incorrect as SLAs do not aim to increase costs, limit resources, or reduce scalability; they focus on service quality and reliability.