ICT Cloud Computing and Virtualization 4

Question 1

What does 'multi-tenancy' mean in cloud computing?

Accepted Answer

Multiple customers sharing the same physical infrastructure while remaining isolated

Answer

Multi-tenancy allows a cloud provider to serve multiple customers on shared hardware using logical isolation.

Question 2

Which technology underlies most Linux container solutions by isolating processes using kernel namespaces and cgroups?

Accepted Answer

LXC/LXD and Docker

Answer

LXC and Docker use Linux kernel namespaces for isolation and cgroups to limit resource usage per container.

Question 3

What is 'auto-scaling' in cloud environments?

Accepted Answer

Automatically adjusting the number of compute instances based on load metrics

Answer

Auto-scaling adds or removes instances automatically in response to metrics like CPU utilization or request count.

Question 4

In cloud storage, what distinguishes object storage from a traditional file system?

Accepted Answer

Objects are accessed via unique keys/URLs through an API, with no directory hierarchy

Answer

Object storage (like AWS S3) uses flat namespaces and HTTP APIs with unique identifiers rather than file paths.

Question 5

What is a 'hyperconverged infrastructure' (HCI)?

Accepted Answer

A system that combines compute, storage, and networking into a single software-defined platform

Answer

HCI integrates compute, storage, and networking in one appliance managed by a single software layer, simplifying deployment.

ICT - Information Communication Technology Practice Test