The process was conducted very smoothly.

It focused on:

• Linux administration
• Computer networking
• Virtualization
• Storage
• Hardware

Interviewers asked conceptual questions along with practical execution of Linux commands.

They were very friendly and made us feel like a part of the company.

What is DNS? Show the commands to find the DNS name server. Where are DNS files cached?

What is the ping command? Explain it. (They wanted an ICMP explanation).

Trace packets when two routers are communicating! (traceroute command in Linux).

Various file systems. Commands for checking file status and mounting new drives on Linux, and various related commands.

What if two computers with the same IP try to communicate with each other (on the same or different networks)?

What if the CRC of a received packet is corrupted? How will you debug in that case?

Preventing packet looping in a network (TTL exceeded). How do switches (Layer 2 devices) prevent loops?

Difference between various unit conventions: MiB vs. MB KB vs. Kb/s

Questions related to hardware: Multi-core processors. Optical cables. SSD vs. HDD. NAS vs. SAN.

Explain the concept of virtualization. How do hypervisors work, and what are their types?

IP routing table in Linux. Adding or deleting rules and various types of sockets.

Explain procfs and its significance.

They asked a question which I wasn't able to grasp. They wanted me to explain about AFP (Apple Filing Protocol).

Asked me to explain the Nutanix Stack. How does it work? (They had explained it in the PPT).

Note: Prepare well for behavioral rounds. They will ask situation-based questions.