NTT Data Vmware Administrator Interview Questions and Answers

Q1. 1. What is Virtualization ? 2. Thin & Thick provison ? 3. Snapshot background process? 4. VM files ? 5. vCenter Migration steps?
Ans. 
Virtualization is the process of creating a virtual version of a device or resource, such as a server, storage device, network or operating system.
• Virtualization allows multiple virtual machines to run on a single physical machine, maximizing resources and increasing efficiency.

• Thin provisioning allocates storage space on an as-needed basis, while thick provisioning allocates all required space upfront.

• Snapshots captur...read more
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Q2. Explain ESXi OS upgrade and rollback procedures ?
Ans. 
ESXi OS upgrade and rollback procedures involve careful planning and execution to ensure system stability.
• Before upgrading, ensure compatibility with hardware and software requirements

• Take backups of important data and configurations

• Use VMware Update Manager or command line interface for upgrade process

• Monitor upgrade progress and resolve any issues that may arise

• For rollback, restore from backups taken before upgrade
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Q3. What is thick provisioned eager and lazy zero ?
Ans. 
Thick provisioned eager and lazy zero are types of disk provisioning in VMware.
• Thick provisioned eager zeroed: allocates all the space for a virtual disk at the time of creation and zeros out the disk blocks immediately.

• Thick provisioned lazy zeroed: allocates all the space for a virtual disk at the time of creation but does not zero out the disk blocks until data is written to them.
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Q4. Snapshot background process while initiating through vCenter or ESXi host ?
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Snapshot background process involves creating a point-in-time copy of a virtual machine's disk file.
• Snapshots are created to capture the current state of a virtual machine's disk file

• When a snapshot is initiated through vCenter or ESXi host, a background process is triggered to create the snapshot

• The background process involves freezing the virtual machine's disk file, creating a delta disk to store changes, and redire
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Q5. What is lockdown technology in VMware ?
Ans. 
Lockdown technology in VMware restricts access to the ESXi host directly, allowing only authorized users to perform specific actions.
• Lockdown mode can be enabled to prevent direct access to the ESXi host

• Only users with specific permissions can perform actions on the host

• Helps enhance security by limiting access to the host

• Can be configured through the vSphere Client or vSphere Web Client
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Q1. What is VMware What is sv motion What is v-mostion What is ha and dr
Ans. 
VMware is a virtualization and cloud computing software provider. SV motion and v-motion are features that enable live migration of virtual machines. HA stands for High Availability and DR stands for Disaster Recovery.
• VMware is a software company that provides virtualization and cloud computing solutions.

• SV motion is a feature in VMware that allows live migration of virtual machines between storage devices.

• V-motion is ...read more
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Q1. Database Management system SQL and PlSQL
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Q2. C Language and C++ Language And Data base Management system SQL and PlSQL and Java
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Q3. Database Management system
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Q4. Sql ad PlSQL Mango Data For Loop and While loop
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Q5. C language andC ++ Language and Java
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It's a 60 minute test, which has all the logical thinking question, quantitative , patterns and pseudo code even although its vary from easy to medium questions. The result will be declared immediately within minutes and the other round will start.

Q1. Self introduce yourself.
Ans. 
I am a dedicated and experienced System Administrator with a strong background in managing IT infrastructure.
• Over 5 years of experience in system administration

• Proficient in managing servers, networks, and security systems

• Skilled in troubleshooting and resolving technical issues

• Certified in relevant technologies such as Microsoft, Cisco, etc.
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Q2. About your company
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Reasoning arthemetic

Basic coding skills technical questions

Q1. Check my language skills?
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Q2. What is OSI layer with examples?
Ans. 
OSI (Open Systems Interconnection) model is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system.
• OSI model has 7 layers, each layer has a specific function and communicates with the layer above and below it.

• Examples of OSI layers are: Physical layer (transmitting bits over a medium), Data link layer (framing data into packets), Network layer (rout...read more
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Q3. What are CMD commands usually used?
Ans. 
CMD commands are used for various tasks like managing files, network settings, system configurations, and more.
• CMD commands are used to navigate and manage files and directories on a computer.

• They can be used to configure network settings and troubleshoot network issues.

• CMD commands can also be used to manage system configurations and services.

• Some commonly used CMD commands include dir, cd, ipconfig, ping, netstat, an
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