# MOST COMMON VMware CODING INTERVIEW QUESTIONS

###### The 15 most commonly asked vmware interview questions

# What is VMware?

VMware provides virtualization and cloud-computing software services to businesses. So, how does VMware work? Its virtualization technology uses a bare-metal hypervisor. VMware's hypervisors are the VMware ESX/VMware ESXi in x86 architecture. It installs the hypervisor on the physical server so that many Virtual Machines (VMs) can run on it. The Virtual Machines (VMs) can then do the following:

Optimize hardware resources

Improve scalability

Increase flexibility in deploying

Manage software applications

Some of its popular products are as follows:

VMware vSphere

VMware cloud foundation

VMware horizon

VMware

vCenter

Read this blog to get better prepared for VMware interview questions. As part of this preparation, you should also know how their different products work. Let's see how the following concepts emerge during the VMware interview process.

###### ARRAYS

You can use arrays in VMware automation to manage data. This data relates to VMs and their configuration. Arrays streamline repetitive tasks and workflows. You can use each element of the array to represent a VM, so these elements can store properties like the following:

Name

Status

Resource allocation

Networking details

Try solving these problems related to arrays:

Determine if the sum of three integers is equal to the given value

__Problem statement__

Given an array of integers and a value, determine if there are any three integers in the array whose sum equals the given value.

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Find the missing number in the array

__Problem statement__

We are given an array containing ‘n’ distinct numbers taken from the range 0 to ‘n’. Since the array has only ‘n’ numbers out of the total ‘n+1’ numbers, find the missing number.

###### LINKED LISTS

A knowledge of VMkernel development is important when applying to certain positions. This is because VMware develops virtualization software. You can apply linked lists to manage various kernel __data structures__.

Questions related to kernel design and implementation may involve linked lists. See if you can solve these linked lists problems:

Add two integers

__Problem statement__

Given the head pointers of two linked lists where each linked list represents an integer number (each node is a digit), add them and return the resulting linked list.

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Copy linked list with arbitrary pointer

__Problem statement__

Make a deep copy of the given linked list where each node has two pointers: 'next' and 'arbitrary_pointer'.

###### TREES

Trees can be relevant for virtualization interview questions. In virtualized environments, you can use trees for the following operations:

Resource management

Scheduling

Memorization

Tree-based data structures are often employed in resource allocation __algorithms__. Test your knowledge of trees with these questions:

Connect all siblings

__Problem statement__

Given the root to a binary tree where each node has an additional pointer called sibling (or next), connect the sibling pointer to the next node in the same level.

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Determine if the binary tree is a binary search tree

__Problem statement__

Given a Binary Tree, figure out whether it's a Binary Search Tree. In a binary search tree, each node's key value is smaller than the key value of all nodes in the right subtree, and are greater than the key values of all nodes in the left subtree i.e. L < N < R.

###### STRINGS

Strings protocol is vital to parse and manipulate protocol headers, messages, or payloads. This is because VMware products involve networking and protocol analysis capabilities. You should study the following topics:

Network packet inspection

String matching in network traffic

Protocol-specific parsing and validation

Challenge yourself with these string segmentation and palindrome problems:

String segmentation

__Problem statement__

Given a dictionary of words and an input string tell whether the input string can be completely segmented into dictionary words.

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Find all palindrome substrings

__Problem statement__

Given a string, find all substrings that are palindromes.

###### DYNAMIC PROGRAMMING

Dynamic programming is an essential topic for VMware interviews. It optimizes resource allocation and workload scheduling.

Questions could be about virtual machine placement, load balancing, or optimal resource provisioning. You can apply dynamic programming techniques to devise efficient and scalable solutions. Practice your dynamic programming concepts with the questions below.

Find the maximum sum of a subarray

__Problem statement__

Given an array of positive numbers and a positive number ‘k’, find the maximum sum of any contiguous subarray of size ‘k’.

###### MATH AND STATS

Mathematical modeling and statistical analysis help in understanding system behavior. They can also be useful for these operations:

Predicting performance bottlenecks

Designing efficient algorithms and policies

VMware products and services involve the management of Virtual Machines (VMs). So, you should be familiar with capacity planning and forecasting. Now try to solve this problem and check your answer:

Determine if the number is valid

__Problem Statement__

Given an input string, determine if it makes a valid number or not. For simplicity, assume that white spaces are not present in the input.

###### BACKTRACKING

You should have a strong understanding of common sorting algorithms. Search algorithms like binary search and hash-based searching are also important. So, where can you use sorting algorithms? One example is when using scheduling algorithms to assign VMs to hosts. Apply your knowledge of backtracking to the following question:

Boggle

__Problem Statement__

Given an NxN grid of characters and a dictionary, find all words which can be made from the characters in the grid and are present in the given dictionary. A word can start and end at any character in the grid. The next character must be adjacent to the previous character in any of the directions i.e. up, down, left, right and diagonal. The character at each position in the grid can be used only once while making a word.

###### GRAPHS

Graphs are useful for the VMware interview process in the following ways:

Representing and analyzing VMware networking topologies

Modeling and managing component dependencies

Managing clusters

Analyzing system performance analysis

Ready to test your knowledge of graphs? Try solving this problem and see if you need more practice:

Find the minimum spanning tree

__Problem Statement__

Find the minimum spanning tree of a connected, undirected graph with weighted edges.

###### DESIGN

VMware develops complex software systems and solutions. This is why you should have a strong foundation of design principles. Here are some aspects of design that might come up during the interview:

Ability to design scalable and efficient systems

Component interactions, API design, and proposing design patterns

Database design for different management solutions

Intuitive UI/UX of VMware products

VMware security design to enhance privacy

Implement a LRU cache

__Problem Statement__

Least Recently Used (LRU) is a common caching strategy. It defines the policy to evict elements from the cache to make room for new elements when the cache is full, meaning it discards the least recently used items first.

###### SORTING AND SEARCHING

You should have a strong understanding of common sorting algorithms. Search algorithms like binary search and hash-based searching are also important. So, where can you use sorting algorithms? One example is their use in scheduling algorithms that assign VMs to hosts. How well do you remember sorting and searching? Test yourself now:

Merge overlapping intervals

__Problem statement__

Given a list of intervals, merge all the overlapping intervals to produce a list that has only mutually exclusive intervals.

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Search in a 2D matrix

__Problem Statement__

Search, or find the position of, a given key in a 2D matrix. All rows and columns are sorted.

###### TAKE THE SMART WAY FOR INTERVIEW PREP

To succeed in VMware interviews, you should know the key concepts used in their products. Each of the topics covered in this blog has its relevance to the VMware ecosystem.

Do you need a more structured approach for your interview preparation process? Check out our __Definitive Interview Prep Roadmap__. You can learn much faster with the self-study plan in this useful resource.

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