Computer Science - IT MCQs
Topic Notes: Computer Science - IT
<p>MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.</p>
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
61
What does 'resource pooling' mean in the context of cloud computing?
Answer:
The provider's computing resources are pooled to serve multiple consumers using a multi-tenant model.
Resource pooling means that the computing resources (e.g., storage, processing, memory, network bandwidth) are pooled to serve multiple consumers using a multi-tenant model, with different physical and virtual resources dynamically assigned and reassigned according to demand.
62
Which of the following is a characteristic that distinguishes Utility Computing from traditional hosting?
Answer:
Pay-per-use model and on-demand provisioning.
Utility computing, a foundational concept for cloud computing, is characterized by a pay-as-you-go model where users are billed based on their consumption of computing resources, just like public utilities.
63
What is the primary role of a 'load balancer' in cloud architecture?
Answer:
To distribute incoming network traffic across multiple servers.
A load balancer improves the efficiency and reliability of web applications by distributing network traffic evenly across a group of backend servers, preventing any single server from becoming a bottleneck.
64
What is the primary benefit of 'object storage' in cloud computing?
Answer:
Scalable, cost-effective storage for unstructured data and backups.
Object storage organizes data into flexible objects and offers massive scalability, durability, and cost-effectiveness for unstructured data (like images, videos, backups, archives, big data analytics), making it ideal for large-scale storage needs rather than high-performance, frequently changing data.
65
A developer needs an environment to build, deploy, and manage web applications without worrying about the underlying infrastructure. Which service model fits best?
Answer:
PaaS.
PaaS provides a complete platform for developing, running, and managing applications. It includes operating systems, execution environments, databases, and web servers, abstracting the infrastructure details from the developer.
66
What is the primary concern addressed by 'measured service' in cloud computing?
Answer:
Billing transparency and resource utilization tracking.
Measured service refers to the ability to monitor, control, and report on resource usage, providing transparency for both the provider and consumer and enabling pay-per-use billing models.
67
Which term refers to the practice of designing applications to run on distributed systems, leveraging horizontal scaling and resilience features of cloud platforms?
Answer:
Cloud-native development.
Cloud-native development is an approach to building and running applications that fully leverage the advantages of the cloud computing delivery model. It focuses on using microservices, containers, serverless functions, and CI/CD for rapid iteration and scalability.
68
What is the main purpose of a Service Level Agreement (SLA) in cloud computing?
Answer:
To guarantee a certain level of service and availability from the cloud provider.
An SLA is a contract between a cloud provider and a customer that specifies the level of service expected from the provider, outlining metrics like uptime, data transfer speeds, and response times, and often includes penalties for non-compliance.