Refer to the exhibit. A developer is implementing a GitLab CI/CD pipeline for the first time. A project has been created in GitLab and the developer has ensured runners are available. Which instructio

The correct answer is A. Four jobs, Job A and Job B run in parallel, and Job B will complete at least 20 seconds later than Job A.. The GitLab CI/CD YAML specifies four jobs: job_A, job_B, test-jobA, and test-jobB. By default, jobs in the same stage run in parallel.

CI/CD Pipelines

Question

Refer to the exhibit. A developer is implementing a GitLab CI/CD pipeline for the first time. A project has been created in GitLab and the developer has ensured runners are available. Which instructions for the GitLab CI/CD pipeline has the developer specified in the YAML file?

Options

AFour jobs, Job A and Job B run in parallel, and Job B will complete at least 20 seconds later than Job A.
BThree jobs, after test-jobB runs a simulated test runs for 20 minutes longer than test-jobA
CThree jobs, after test-jobB runs a simulated test runs for 20 seconds longer than test-jobA
DFour jobs, Job B will run sequentially after Job A, and Job B will run at least 20 seconds longer

How the community answered

(48 responses)

A
77% (37)
B
6% (3)
C
4% (2)
D
13% (6)

Why each option

The GitLab CI/CD YAML specifies four jobs: `job_A`, `job_B`, `test-jobA`, and `test-jobB`. By default, jobs in the same stage run in parallel.

AFour jobs, Job A and Job B run in parallel, and Job B will complete at least 20 seconds later than Job A.Correct

The YAML defines four distinct jobs. In GitLab CI/CD, jobs defined without an explicit `stage` are assigned to the default `test` stage, and jobs within the same stage run in parallel unless specific dependencies are configured. Both `job_A` (20s sleep) and `job_B` (40s sleep) are in the default stage and will run concurrently, meaning `job_B` will complete at least 20 seconds after `job_A`.

BThree jobs, after test-jobB runs a simulated test runs for 20 minutes longer than test-jobA

The pipeline explicitly defines four jobs, not three. Additionally, the time difference between `job_A` and `job_B` completion is 20 seconds, not 20 minutes.

CThree jobs, after test-jobB runs a simulated test runs for 20 seconds longer than test-jobA

There are four jobs, not three. Also, `test-jobA` and `test-jobB` will run in parallel if they are in the same stage and no `needs` or `dependencies` are specified, so `test-jobB` does not necessarily run 'after' `test-jobA`.

DFour jobs, Job B will run sequentially after Job A, and Job B will run at least 20 seconds longer

Jobs `job_A` and `job_B` will run in parallel by default because they are in the same stage and no explicit sequential execution (e.g., via `needs` keyword) is defined between them.

Concept tested: GitLab CI/CD job execution flow

Source: https://docs.gitlab.com/ee/ci/yaml/#stages

Topics

#GitLab CI/CD#Pipeline Jobs#Parallel Execution#YAML Configuration

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