Glassdoor users rated their interview experience at HDL as 100% positive with a difficulty rating score of 3 out of 5 (where 5 is the highest level of difficulty). Candidates interviewing for Associate and rated their interviews as the hardest, whereas interviews for Associate and roles were rated as the easiest.
The hiring process at HDL takes an average of 28 days when considering 1 user submitted interviews across all job titles. Candidates applying for Associate had the quickest hiring process (on average 28 days), whereas Associate roles had the slowest hiring process (on average 28 days).
The interview focused on networking fundamentals, routing and switching concepts, VLANs, TCP/IP, subnetting, DNS, DHCP, troubleshooting methodology, and behavioral questions. The interviewer also asked about previous technical experience, problem-solving skills, teamwork, and handling network incidents. The process was professional and well organized.
Interview questions [1]
Question 1
Tell me about yourself.
* What is the OSI model?
* What is the difference between TCP and UDP?
* What is a VLAN?
* What is the purpose of STP?
* Explain the difference between a router and a switch.
* What is subnetting?
* What is DHCP?
* What is DNS?
* How would you troubleshoot a network outage?
* What is NAT?
* What is the difference between static and dynamic routing?
* What is OSPF?
* What is BGP?
* What is the default gateway?
* How do you check network connectivity?
* Explain packet loss.
* What is a firewall?
* What is port security?
* Describe a technical problem you solved.
I applied online. The process took 4 weeks. I interviewed at HDL (Toronto, ON) in Jan 2025
Interview
A few rounds of interviews, nice and simple. You need to have the qualification to apply. Be knowledgeable about the industry. Nothing very complicated. Steady work schedule and breaks. Good workplace.
I applied through an employee referral. I interviewed at HDL (Richmond, VA) in Dec 2013
Interview
i was hired early on, you just needed hands and eyes to work there. it was almost a mom and pop place at first, so the interview was done by a higher up and it was brief in brevity