I applied online. I interviewed at Zscaler (Bengaluru) in Feb 2022
Interview
I had applied through Linkedin and the interview process took almost 2 weeks.
1st Round: Technical
2nd Round: Managerial
The HR should have been diligent to inform on what to expect from the Managerial round.
Interview questions [1]
Question 1
Technical Round:
-Difference between PUT and POST
-Sequence Numbers, dup ACks, TCP retransmission
-IPSEC Stages
-What is a transparent Proxy?
-What happens if TCP SYN is dropped
-SAML - How does SP verify that that this is IdP and client
-SNI in SSL
-What is MSS and Window size
-How is Trust established in certificates
-High level question on usage of HAR/Fiddler/Wireshark
-Steps to troubleshoot performance issue
Round2:Managerial
-What do you know about Zscaler
-What are the responsibilities of TAM
-Technical: The interviewer shared a packet capture and asked me to troubleshoot performance issue from the pcap
-Roleplay:Angry customer whose job is on line because the product rolled out by ZS has a bug, all the applications are down and they are loosing money.
-Strength, weakness
-Achievements, Failures
I applied through an employee referral. The process took 6 weeks. I interviewed at Zscaler (Sydney) in Jun 2024
Interview
- [ ] Basic Networking, proxy, SSL Decryption, Need of SSL, VPN, SSL handshake, what is the process when you search a website on browser , HTTP v/s HTTP. HTTP or SSL which is more secure etc.
* MSS vs MTU What would you see in Wireshark as it connects to network troubleshoot packet loss and latency
* SNI in SSL . MSS MTU, Http and https scenario based questions.
* TCP /IP
* OSI model
* packet drop troubleshooting
* slowness issue
* basic cloud fundamentals
* dns
* arp
I applied through an employee referral. The process took 2 days. I interviewed at Zscaler (New Delhi) in Jun 2023
Interview
My application was rejected at the first instance after uploading on the portal. They did not even called me. Later I got referred by a friend and first round was conducted. I was rejected even after answering almost all questions.
Interview questions [1]
Question 1
Basic Networking, proxy, SSL Decryption, Need of SSL, VPN, SSL handshake, what is the process when you search a website on browser , HTTP v/s HTTP. HTTP or SSL which is more secure etc.
I applied online. I interviewed at Zscaler in Mar 2023
Interview
Smooth interview process with good coordination of HR. First Hiring Manager Interview with 2 people. Second Technical Role Play with technical and non-technical stakeholders. Third interview with TAM Director Fourth interview with VPN
Interview questions [1]
Question 1
MSS vs MTU What would you see in Wireshark as it connects to network troubleshoot packet loss and latency