VMware Interview Questions and Answers, VMware Interview Questions and Answers Freshers, VMware Interview Questions and Answers, VMware Interview Questions
Before getting on to the VMware interview questions, the student must know that the VMware 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 VMware. This post related to VMware Interview Questions and Answers, VMware Interview Questions and Answers Freshers, VMware Interview Questions and Answers, VMware Interview Questions will help you let out find all the solutions that are frequently asked in you upcoming VMware interview.
Over thousands of vacancies available for the VMware developers, experts must be acquaintance with all the component of VMware 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 VMware is the best approach to solve the problems linked with problem.
APTRON has spent hours and hours in researching about the VMware Interview Questions and Answers, VMware Interview Questions and Answers Freshers, VMware Interview Questions and Answers, VMware Interview Questions that you might encounter in your upcoming interview. All these questions will alone help you to crack the interview and make you the best among all your competitors.
First of all, let us tell you about how the VMware 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 VMware. 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, VMware 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 VMware 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 VMware professionals.
This ultimate list of best VMware interview questions will ride you through the quick knowledge of the subject and topics like vCenter Server appliance, Manage vCenter Server inventory objects and licenses. This VMware interview questions and answers can be your next gateway to your next job as a VMware expert.
These are very Basic VMware Interview Questions and Answers for freshers and experienced both.
Q1: What is VMKernel and why it is important?
A1: VMkernel is a virtualization interface between a Virtual Machine and the ESXi host which stores VMs. It is responsible to allocate all available resources of ESXi host to VMs such as memory, CPU, storage etc. It’s also control special services such as vMotion, Fault tolerance, NFS, traffic management and iSCSI. To access these services, VMkernel port can be configured on ESXi server using a standard or distributed vSwitch. Without VMkernel, hosted VMs cannot communicate with ESXi server.
Q2: What is hypervisor and its types?
A2: Hypervisor is a virtualization layer that enables multiple operating systems to share a single hardware host. Each operating system or VM is allocated physical resources such as memory, CPU, storage etc by the host. There are two types of hypervisors
- Hosted hypervisor (works as application i-e VMware Workstation)
- Bare-metal (is virtualization software i-e VMvisor, hyper-V which is installed directly onto the hardware and controls all physical resources).
Q3: What is VMware FT?
A3: FT stands for Fault Tolerance very prominent component of VMware vSphere. It provides continuous availability for VMs when an ESXi host fails. It supports up to 4 vCPUs and 64 GB memory. FT is very bandwidth intensive and 10GB NIC is recommended to configure it. It creates complete copy of an entire VM such as storage, compute, and memory.
Q4: How many vCPUs can be used for a VM in FT?
A4: In vSphere 6.0, there can be up to 4 vCPUs and 64 GB RAM can be used
Q5: What is virtual networking?
A5: A network of VMs running on a physical server that are connected logically with each other is called virtual networking.
Q6: What is vSS?
A6: vSS stands for Virtual Standard Switch is responsible for communication of VMs hosted on a single physical host. it works like a physical switch automatically detects a VM which want to communicate with other VM on a same physical server.
Q7: What are main components of vCenter Server architecture?
A7: There are three main components of vCenter Server architecture.
- vSphere Client and Web Client: a user interface.
- vCenter Server database: SQL server or embedded PostgreSQL to store inventory, security roles, resource pools etc.
- SSO: a security domain in virtual environment
Q8:What is PSC and its components?
A8:PSC stands for Platform Services Controller first introduced in version 6 of VMware vSphere which handles infrastructure security functions. It has three main components.
- Single Sign-On (SSO)
- VMware Certificate Authority (CA)
- Licensing service
Q9:Mention what are the different types of virtualization available?
A9:Different types of virtualization available are
- Application virtualization
- Presentation virtualization
- Network virtualization
- Storage virtualization
Q10:Explain what is vCloud Suite?
A10: vCloud Suite combines with multiple VMware components to give a complete set of cloud infrastructure capabilities in a single package, including virtualization, software-defined datacenter services, disaster recovery, application management, etc.
Q11: Mention what is the difference between template and clone in VMware?
Q12:Explain the new features available in vSphere 5?
A12: In the latest version of vSphere 5.5 it includes
- ESXi Hypervisor enhancement
- Virtual Machine Enhancement
- VMware vCenter Server Enhancement
- vSphere storage Enhancement
- vSphere Networking Enhancements
Q13: Mention what are the different types of server software does VMware provides?
A13: VMware provides three different types of server software
- VMware ESX Server
- VMware ESXi Server
- VMware Server
Q14: What is the difference between the vSphere ESX and ESXi architectures?
A14: VMware ESX and ESXi are both bare metal hypervisor architectures that install directly on the server hardware.
Although neither hypervisor architectures relies on an OS for resource management, the vSphere ESX architecture relied on a Linux operating system, called the Console OS (COS) or service console, to perform two management functions: executing scripts and installing third-party agents for hardware monitoring, backup or systems management.
In the vSphere ESXi architecture, the service console has been removed. The smaller code base of vSphere ESXi represents a smaller “attack surface” and less code to patch, improving reliability and security.
Q15: What is a snapshot?
A15: A snapshot is a “point in time image” of a virtual guest operating system (VM). That snapshot contains an image of the VMs disk, RAM, and devices at the time the snapshot was taken. With the snapshot, you can return the VM to that point in time, whenever you choose. You can take snapshots of your VMs, no matter what guest OS you have and the snapshot functionality can be used for features like performing image level backups of the VMs without ever shutting them down.
Q16: What is VMware HA?
- VMware HA i.e. High Availability which works on the host level and is configured on the Cluster.
- A Cluster configured with HA will migrate and restart all the vms running under any of the host in case of any host-level failure automatically to another host under the same cluster.
- VMware HA continuously monitors all ESX Server hosts in a cluster and detects failures.
- VMware HA agent placed on each host maintains a heartbeat with the other hosts in the cluster using the service console network. Each server sends heartbeats to the others servers in the cluster at five-second intervals. If any servers lose heartbeat over three consecutive heartbeat intervals, 5.VMware HA initiates the failover action of restarting all affected virtual machines on other hosts.
You can set virtual machine restart priority in case of any host failure depending upon the critical nature of the vm.
NOTE:Using HA in case of any host failure with RESTART the vms on different host so the vms state will be interrupted and it is not a live migration
Q17: In a cluster with more than 3 hosts, can you tell Fault Tolerance where to put the Fault Tolerance virtual machine or does it chose on its own?
A17: You can place the original (or Primary virtual machine). You have full control with DRS or vMotion to assign it to any node. The placement of the Secondary, when created, is automatic based on the available hosts. But when the Secondary is created and placed, you can vMotion it to the preferred host.
Q18: How does vSphere HA works?
A18: When we configure multiple hosts for HA cluster, a single host is automatically elected as the master host. The master host communicates with vCenter Server and monitors the state of all protected virtual machines and of the slave hosts. When you add a host to a vSphere HA cluster, an agent is uploaded to the host and configured to communicate with other agents in the cluster.
Q19: How is a Master host elected in vSphere HA environment?
A19: When vSphere HA is enabled for a cluster, all active hosts (those not in standby or maintenance mode, or not disconnected) participate in an election to choose the cluster’s master host. The host that mounts the greatest number of datastores has an advantage in the election. Only one master host typically exists per cluster and all other hosts are slave hosts.
If the master host fails, is shut down or put in standby mode, or is removed from the cluster a new election is held.
Q20: What is vCenter Agent?
A20: VC agent is an agent installed on ESX server which enables communication between VC and ESX server. This Agent will be installed on ESX/ESXi will be done when you try to add the ESx host in Vcenter.
Q21: What is the command used to restart SSH, NTP & Vmware Web access?
A21: It is very important to understand the command to start and stop services. So i have covered basic service restart command in the below VMware interview questions.
Service sshd restart
Service ntpd restrat
Service vmware–webaccess restart
Q22: What is the use of Virtual Machine Port Group?
A22: Virtual Machine port group is used by Virtual machine communication.
Q23: What are the different types of Partitions in ESX server?
A23: / -root
Q24: What are the types of VLAN tagging in Vsphere?
A24: There are 3 types of VLAN tagging available in Vsphere.
1.Virtual Switch Tagging (VST)
2.External Switch Tagging (EST)
3.Virtual Guest Tagging (VGT)
Q25: What Is A .vmdk File?
A25: This isn’t the file containing the raw data. Instead it is the disk descriptor file which describes the size and geometry of the virtual disk file. This file is in text format and contains the name of the –flat.vmdk file for which it is associated with and also the hard drive adapter type, drive sectors, heads and cylinders, etc. One of these files will exist for each virtual hard drive that is assigned to your virtual machine. You can tell which –flat.vmdk file it is associated with by opening the file and looking at the Extent Description field.
Q26: What Is Promiscuous Mode In Vmware?
- Promiscuous mode is a security policy which can be defined at the virtual switch or portgroup level
- A virtual machine, Service Console or VMkernel network interface in a portgroup which allows use of promiscuous mode can see all network traffic traversing the virtual switch.
- If this mode is set to reject, the packets are sent to intended port so that the intended virtual machine will only be able to see the communication.
- Example: In case you are using a virtual xp inside any Windows VM. If promiscuous mode is set to reject then the virtual xp won’t be able to connect the network unless promiscuous mode is enabled for the Windows VM.
Q27: What Is Vdi?
- VDI stands for Virtual Desktop Infrastructure where end user physical machine like desktop or laptop are virtualized due to which VMware described VDI as “delivering desktops from the data center”.
- Once VDI is used the end user connect to their desktop using a device called thin client.
- The end user can also connect to their desktop using VMware Horizon View installed on any desktop or mobile devices
Q28: How Many Virtual Cpus Can I Use On A Fault Tolerant Virtual Machine ?
A28: vCenter Server 4.x and vCenter Server 5.x support 1 virtual CPU per protected virtual machine.
Q29: In A Cluster With More Than 3 Hosts, Can You Tell Fault Tolerance Where To Put The Fault Tolerance Virtual Machine Or Does It Chose On Its Own?
A29: You can place the original (or Primary virtual machine). You have full control with DRS or vMotion to assign it to any node. The placement of the Secondary, when created, is automatic based on the available hosts. But when the Secondary is created and placed, you can vMotion it to the preferred host.
Q30: How Does Vsphere Ha Works?
A30: When we configure multiple hosts for HA cluster, a single host is automatically elected as the master host. The master host communicates with vCenter Server and monitors the state of all protected virtual machines and of the slave hosts. When you add a host to a vSphere HA cluster, an agent is uploaded to the host and configured to communicate with other agents in the cluster.
VMware Conclusion Interview FAQs
We know the list of VMware Interview Questions and Answers, VMware Interview Questions and Answers Freshers, VMware Interview Questions and Answers, VMware 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 VMware interview questions and answers post covers all the basic of the VMware technology and you have to check out the FAQs of different components of VMware 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 VMware 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 VMware 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 learnt 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 VMware Training in Noida. We are one of the best institute for VMware in noida which provide advance learning in the field of VMware Course. We’ve highly qualified professionals working with us and promise top quality education to the students.
We hope that you enjoyed reading VMware Interview Questions and Answers, VMware Interview Questions and Answers Freshers, VMware Interview Questions and Answers, VMware Interview Questions and all the FAQs associated with the interview. Do not forget to revise all the VMware interview questions and answers before going for the VMware interview. In addition to this, if you’ve any doubt or query associated with VMware, 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 VMware Technology.