CS DevOps & Deployment 2

Question 1

In a CI/CD pipeline, what is the primary purpose of the continuous integration stage?

Accepted Answer

Automatically merging and testing code changes frequently to detect integration issues early

Answer

Continuous integration merges developer changes into a shared branch frequently and runs automated builds and tests to catch conflicts early.

Question 2

A team wants zero-downtime deployments by running two identical production environments and switching traffic between them. Which strategy is this?

Accepted Answer

Blue-green deployment

Answer

Blue-green deployment maintains two identical environments and switches all traffic from one to the other after the new version is verified.

Question 3

Which file is used to define the steps for building a Docker container image?

Accepted Answer

Dockerfile

Answer

A Dockerfile contains the ordered instructions Docker uses to build a container image layer by layer.

Question 4

What does 'Infrastructure as Code' (IaC) primarily enable?

Accepted Answer

Defining and provisioning infrastructure through machine-readable configuration files

Answer

IaC manages servers, networks, and services through versioned configuration files, making infrastructure reproducible and auditable.

Question 5

A deployment gradually routes 5% of users to a new version before rolling it out to everyone. What is this called?

Accepted Answer

Canary deployment

Answer

A canary deployment exposes a small subset of users to the new release to detect problems before full rollout.

(CS) Computer Science Practice Test