Zscaler interview experience Real time questions & tips from candidates to crack your interview
Associate Software Engineer
Zscaler
3 rounds | 8 Coding problems
Interview preparation journey
Journey
In my second year, I did the course of competitive programming from Coding Ninjas which helped me to deep dive into DSA and then I start practicing problem on Codeforces, Codechef and leetcode
Application story
The company visited campus for recruitment for the posts of Associate Software Engineer(Dev Test (C, C++, Java, Python) and Associate Software Engineer ( Developer - C Programming) There were three rounds, Coding round, Technical Interview, and Managerial cum HR round.
Why selected/rejected for the role?
I rejected in technical interview round 2 because I do not know networking in deep. For this role you should know theory concept in deep
Preparation
Duration: 3 months
Topics: Dynamic programming, Graph, DSA, OS, Networking
Tip

Tip 1 : DSA
Tip 2 : CS fundamental (mainly Networking)

Application process
Where: Campus
Eligibility: 60% throughout.
Resume tip

Tip 1 : Good Projects
Tip 2 : Do not put false things on resume.

Interview rounds
01
Round
Hard
Online Coding Test
Duration90 minutes
Interview date20 Jan 2023
Problems3

It consist of 3 coding question in C language and 1 question is easy and other 2 are medium to hard level.

1. Minimum Number Of Vertices To Reach All Nodes

#### Given a directed acyclic graph having ‘N’ nodes. A matrix ‘edges’ of size M x 2 is given which represents the ‘M’ edges such that there is an edge directed from node edges[i][0] to node edges[i][1].

...
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Problem approach

Intution to this problem is you have to choose least adjacent such that you will light up all the nodes.

i.e.you have to choose minimum adjacent nodes.

so we have two choices either we take or notTake current node say inclusive and exclusive.

recursivelty we can find maximum non adjacent nodes that can be selected by considering all node have same price 1.

if will su...

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2. Minimum Cost Path

#### You have been given a matrix of ‘N’ rows and ‘M’ columns filled up with integers. Find the minimum sum that can be obtained from a path which from cell (x,y) and ends at the top left corner (1,1).

<...
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Problem approach

Dijkstra's algorithm.

3. Jump Game

#### You have been given an array 'ARR' of ‘N’ integers. You have to return the minimum number of jumps needed to reach the last index of the array i.e ‘N - 1’.

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02
Round
Medium
Video Call
Duration60 minutes
Interview date24 Jan 2023
Problems3

It is first Technical Interview round. It was focused on DSA and CS fundamentals.

1. Max Product Subset

#### Since the product can be large, return it m...

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Problem approach

Create 5 variables to maintain the largest, second-largest, third-largest, smallest, and second smallest. The combination of three would be the maximum product.

2. OS Questions

2. What is semaphore, mutex?
3. What is critical section?

3. Networking Question

Define TCP model and/or OSI model.
The flow of data when a link is clicked.

03
Round
Medium
Face to Face
Duration60 minutes
Interview date24 Feb 2023
Problems2
1. Data Stream As Disjoint Intervals

#### You are given a stream of 'n' non-negative integers as the input, and you have to group the stream of integers in the form of disjoint intervals.

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2. Networking Question

1. What is DHCP?
2. What is IP?
3. What is the difference between IPV4 and IPV6?
5. Explain DNS.

Join the Discussion
2 replies
2 months ago
``.....erred light gives me.... creeps. (an,no article), (the,a) ,(an,the)``
0 replies
6 months ago

What were the total number of Technical Interview Rounds? Considering those who were selected, how many Technical Interview rounds did they have to go through?

0 replies
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