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Core Components Flashcards

7 cards from real OpenStack practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Core Components flashcards as text

  1. In OpenStack, what is the role of the 'nova-scheduler' component?

    Answer: Selecting the compute host for a new instance

    nova-scheduler evaluates compute hosts against configured filters and weights to determine the best host for a new VM.

  2. What is the purpose of a Keystone 'endpoint' in OpenStack?

    Answer: A URL registered in the service catalog for a specific service and region

    Keystone endpoints are URLs stored in the service catalog that clients use to reach a specific OpenStack service in a given region.

  3. Which Neutron agent is responsible for applying security group rules on compute nodes?

    Answer: neutron-openvswitch-agent

    The neutron-openvswitch-agent (or linuxbridge-agent) runs on compute nodes and enforces security group rules via iptables or OVS flows.

  4. What does 'Cinder' provide in an OpenStack deployment?

    Answer: Block storage volumes attachable to instances

    Cinder is the OpenStack Block Storage service that provides persistent block volumes that can be attached to and detached from Nova instances.

  5. Which OpenStack service provides object storage with high durability through replication?

    Answer: Swift

    Swift is OpenStack's Object Storage service that stores unstructured data with configurable replication for high durability.

  6. In OpenStack Heat, what file format is used to define infrastructure templates?

    Answer: YAML (HOT format)

    Heat Orchestration Templates (HOT) are written in YAML and describe stacks of OpenStack resources to be provisioned together.

  7. What is the function of the nova-conductor service?

    Answer: Mediates database access for compute nodes and prevents direct DB access

    nova-conductor acts as a database proxy so compute nodes never access the database directly, improving security and scalability.

How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. openstack.org — Test delivery, score release, test dates, score validity, exam information · verified Oct 2026
  2. training.mirantis.com — Eligibility · verified Oct 2026
  3. object-storage-ca-ymq-1.vexxhost.net — Fees, renewal, retake fee, retake policy, time limit · verified Oct 2026