Openstack Interview Questions and Answers, Openstack Interview Questions and Answers Freshers, Openstack Interview Questions and Answers, Openstack Interview Questions
Before getting on to the Openstack interview questions, the student must know that the OpenStack is a continuously varying field which needs the students as well as professionals to upgrade their skills with the new features and knowledge, to get fit for the jobs associated with OpenStack. This post related to Openstack Interview Questions and Answers, OpenStack Interview Questions and Answers Freshers, OpenStack Interview Questions and Answers, Openstack Interview Questions will help you let out find all the solutions that are frequently asked in you upcoming OpenStack interview.
Over thousands of vacancies available for the Openstack developers, experts must be acquaintance with all the component of Openstack technologies. This is necessary for the students in order to have in-depth knowledge of the subject so that they can have best employment opportunities in the future. Knowing every little detail about Openstack is the best approach to solve the problems linked with problem.
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First of all, let us tell you about how the Openstack technology is evolving in today’s world and how demanding it is in the upcoming years. In fact, according to one study, most of the companies and businesses have moved to the Openstack. Now, you cannot predict how huge the future is going to be for the people experienced in the related technologies.
Hence, if you are looking for boosting up your profile and securing your future, Openstack will help you in reaching the zenith of your career. Apart from this, you would also have a lot of opportunities as a fresher.
These questions alone are omnipotent. Read and re-read the questions and their solutions to get accustomed to what you will be asked in the interview. These Openstack interview questions and answers will also help you on your way to mastering the skills and will take you to the giant world where worldwide and local businesses, huge or medium, are picking up the best and quality Openstack professionals.
This ultimate list of best Openstack interview questions will ride you through the quick knowledge of the subject and topics like networking, Cloud Security, Identity & Access Management. This Openstack interview questions and answers can be your next gateway to your next job as a Openstack expert.
These are very Basic Openstack Interview Questions and Answers for freshers and experienced both.
Q1: Explain what is OpenStack?
A1: OpenStack is a set of software tools for managing and building cloud computing platforms for private and public clouds. It’s a free and open source software cloud computing platform.
Q2: Mention what are the three components that make modular architecture of OpenStack?
A2: The three components that make modular architecture for OpenStack are
- OpenStack Compute: For managing large networks of the virtual machine
- OpenStack Object Storage: A storage system that provides support for both block storage and object storage
- Image Service: The delivery service provides discovery and registration for virtual disk images
Q3: Give an overview of OpenStack Services?
A3: OpenStack offers services like
- Keystone: Provides authorization and authentication for users
- Glance: Manages images in different formats
- Cinder: Provides persistent block storage
- Neutron: Enables users to create and attach interfaces to networks
- Nova: Provides instances on user’s demand
- Swift: Storage platform integrated directly into applications
- Ceilometer: Openstack for billing
- Heat: Allows automated infrastructure deployment
Q4: What does “role” and “tenant” indicates in OpenStack?
A4: In OpenStack, a tenant is referred for the group of users while role indicates the authorization level of the user.
Q5: Explain what hypervisor is and what type of hypervisor does OpenStack supports?
A5: Hypervisor is a piece of computer software or hardware that creates and run virtual machines. A system on which one or more virtual machines is defined is referred as host machine.
The types of hypervisor that supports OpenStack are
- Xen and HyperV
Q6: What are the two types of storage does OpenStack Compute provides?
A6: OpenStack provides two classes of block storage,
- Ephemeral Storage: It is associated with a single unique instance. Based on the instance, the size is defined. When the instance associated with it is terminated, data on ephemeral storage ceases to exist
- Volume Storage: This storage is not dependent on any particular instance and is persistent. Volumes are user created and within Quota
Q7: What are the basic functions of Identity Service in OpenStack?
A7: The basic functions of Identity Service is
- User Management: It tracks the users and their permissions
- Service Catalog:It provides a catalog of available services with their API endpoints
Q8: What are the main components of identity user management?
- Users: It is a digital representation of a person, service or system who uses OpenStack cloud services
- Tenants:A container used to group or isolate resource or identity objects. Depending on service operator a tenant may map to a customer, account, organization or project
- Roles: A role includes a set of rights and privileges. A role determines what operations a user is permitted to perform in a given tenant
Q8: What You Mean By Tenant And Role Regarding Openstack ?
A8: In OpenStack, the authorization level of the user is called role and the group of users is called tenant.
Q9: What Types Of Storage Openstack Compute Provides?
A9: OpenStack provides two classes of block storage:
- Volume Storage: It is persistent and not dependent on any particular instance. Volumes are created by users and within Quota
- Ephemeral Storage: It is associated with a single instance.They effectively disappear when a virtual machine is terminated.
Q10: Define Openstack?
A10: OpenStack is a set of software tools for building and managing cloud computing platforms for public and private clouds.
Q11: Give An Overview Of Openstack Services?
A11: OpenStack offers services like :
Glance: Manages images in different formats
Ceilometer: Openstack for billing
Cinder: Provides persistent block storage
Neutron: Enables users to create and attach interfaces to networks
Nova: Provides instances on user’s demand
Swift: Storage platform integrated directly into applications
Heat: Allows automated infrastructure deployment
Keystone: Provides authorization and authentication for users
Q12: What Are The Basic Functions Of Identity Service In Openstack?
A12: The basic functions of Identity Service is:
Service Catalog: It provides a catalog of available services with their API endpoints
User Management: It tracks the users and their permissions
Q13: Explain Modular Architecture Of Openstack?
A13: The three components that make modular architecture for OpenStack are:
OpenStack Compute: For managing large networks of the virtual machine.
Image Service: The delivery service provides discovery and registration for virtual disk images.
OpenStack Object Storage: A storage system that provides support for both block storage and object storage.
Q14: What Is The Meaning Of Term “cinder” In Openstack Service?
A14: Cinder is used for handling persistent storage in OpenStack.The one that is utilized by default is LVM, called Cinder-Volumes.
Q15: What Is The Command Used For Unpause And Pause An Instance?
A15: To unpause an instance – $ nova unpause INSTANCE_NAME
To pause an instance – $ nova pause INSTANCE_NAME
Q16: Explain How You Can Transfer Volume From One Owner To Another In Openstack?
A16: You can transfer a volume from one owner to another by using the command cinder transfer*.
Q17: What are the commands used to generate key pairs in OpenStack?
A17: Commands used to generate key pairs in OpenStack:
- nova keypair-add -pub_key id_rsa.pub mykey
Q18: Which hardware is required for networking in OpenStack?
A18: In OpenStack,networking can be done with following hardware:
- Vendor Plugins
Q19: Which command is used to manage floating IP addresses in OpenStack?
A19: nova floating-ip-*
Q20: What is the use of Cinder Scheduler in OpenStack?
A20: Cinder Scheduler or routing volume is used to create requests to the appropriate volume service.
Q21: Which command is used to list IP address information?
A21: $ nova floating-ip-pool-list
Q22: By default, which cloud infrastructure layer is supported by openstack, when install ?
A22: By default, openstack lies into infrastructure layer called – IaaS (Infrastructure as a Service)
Q23: What is IaaS ?
A23: Iaas (Infrastructure as a Service) – in this service, cloud vendor only provides the underlying hardware support to it’s clients. Other than the hardware resources, client has to take care of everything like – OS, application, security.
Q24: How soon openstack releases happens ?
A24: Openstack releases happens twice a year and after each six months. Openstack releases happens in month of April and October.
Q25: Which configuration management tool is used by pack-stack utility ?
A25: Pack-stack utility uses the puppet as the configuration management tool for automating the openstack installation. In background, puppet pushes the configuration to the nodes based on the answer file configuration.
Q26: What is floating IP ?
A26: Floating IP is an IP address which is acts as a public ip address. In localhost, floating ip address are any ip address which you have defined for your infrastructure. But in the real scenario, floating IP address are the real publi ip address which are provided by the ISP (Internet Service Provider)
Q27: What is Cinder ?
A27: Cinder is a block based storage in which we create the LUNs and use it for the file system storage. First, we will create a LUN, then scan it on the OS. Then, we create the file system on it and mount it. This is how we can use cinder volume for storing the data. Cinder is equivalent to Amazon EBS.
Q28: What is Swift ?
A29: Swift is the object based storage which by passes the file system structure. We can directly upload and download the different objects on swift storage. It is uses where read are more and write are less to objects. Swift is equivalent to Amazon S3.
Q29: What is Nova Scheduler ?
A29: Nova scheduler dispatches the request for new virtual machines to the correct compute nodes based on configured weights and filters. Basically, it checks the different compute nodes based on some algorithms which helps it to create virtual machine on which compute node.
Q30: What is Neutron ?
A30: Neutron is the service which provides the functionality of the network layer. Here, you can create your own isolated network for your own infrastructure. You can create your own network, subnets, route tables and many more.
Openstack Conclusion Interview FAQs
We know the list of We know the list of OpenStack Interview Questions and Answers, PHP Interview Questions and Answers Freshers, OpenStack Interview Questions and Answers, OpenStack Interview Questions is overwhelming but the advantages of reading all the questions will maximize your potential and help you crack the interview. The surprising fact is that this OpenStack interview questions and answers post covers all the basic of the OpenStack technology and you have to check out the FAQs of different components of OpenStack too.
However, you will be asked with the questions in the interview related to the above-mentioned questions. Preparing and understanding all the concept of OpenStack technology will help you strengthen the other little information around the topic.
After preparing these interview questions, we recommend you to go for a mock interview before facing the real one. You can take the help of your friend or a OpenStack expert to find the loop holes in your skills and knowledge. Moreover, this will also allow you in practicing and improving the communication skill which plays a vital role in getting placed and grabbing high salaries.
Remember, in the interview, the company or the business or you can say the examiner often checks your basic knowledge of the subject. If your basics is covered and strengthened, you can have the job of your dream. The industry experts understand that if the foundation of the student is already made up, it is easy for the company to educate the employ towards advance skills. If there are no basics, there is no meaning of having learned the subject.
Therefore, it’s never too late to edge all the basics of any technology. If you think that you’ve not acquired the enough skills, you can join our upcoming batch of Openstack Training in Noida. We are one of the best institute for OpenStack in Noida which provide advance learning in the field of Openstack Course. We’ve highly qualified professionals working with us and promise top quality education to the students.
We hope that you enjoyed reading OpenStack Interview Questions and Answers, PHP Interview Questions and Answers Freshers, OpenStack Interview Questions and Answers, OpenStack Interview Questions and answers and all the FAQs associated with the interview. Do not forget to revise all the OpenStack interview questions and answers before going for the OpenStack interview. In addition to this, if you’ve any doubt or query associated with OpenStack, you can contact us anytime. We will be happy to help you out at our earliest convenience. At last, we wish you all the best for your upcoming interview on OpenStack Technology.