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Network Support Engineer Interview Questions

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525 network support engineer interview questions shared by candidates

Phone interview - basic networking qns involving routing and switching concepts as well as wireless concepts: What is stp? What's the difference between rtsp and stp? What makes rstp converge faster? Two computers are connected via a L2 switch - explain the ping concept. Also, explain how the mac table on a switch gets populated Wireless: What's the difference between 2.4 and 5.0 GHz? What's difference between 802.11n and 802.11 ac? face to face interview - had 2 interviews They ask basic trouble shooting qns but some qns are quite tricky. They will draw a diagram on the baord with very little information. Your supposed to ask them questions and flesh out the answer. You should know your subnetting, stp, vlans,pings,arp, dhcp, dns
avatar

Network Support Engineer

Interviewed at Meraki

3.8★
Oct 10, 2015

Phone interview - basic networking qns involving routing and switching concepts as well as wireless concepts: What is stp? What's the difference between rtsp and stp? What makes rstp converge faster? Two computers are connected via a L2 switch - explain the ping concept. Also, explain how the mac table on a switch gets populated Wireless: What's the difference between 2.4 and 5.0 GHz? What's difference between 802.11n and 802.11 ac? face to face interview - had 2 interviews They ask basic trouble shooting qns but some qns are quite tricky. They will draw a diagram on the baord with very little information. Your supposed to ask them questions and flesh out the answer. You should know your subnetting, stp, vlans,pings,arp, dhcp, dns

I written above in the Describe Interview Process part. But run out of space. The second question of the third stage of the interview, being based on VPN. This one was tricky. You are shown a topology of two sites connected through the internet. And a VPN is created from a router of one site, connected to a VPN Gateway of another site (but this is connected to the switch, not on router). You are told to troubleshoot this. This is where I got confused. I just made sure the IKE1 was set up correctly, the ISAKMP SA's were all matching, and then the pre-shared key matched. Then the IPSec SA's were the same. Then attached it to the VPN tunnel. Also, ensured the tunnel interface was configured correctly, where the destination of the tunnel was the public facing address of the other end, and the tunnel source was a loopback address, and ensured both ends of the tunnel interface were on the same subnet. Then made sure there was a static route (on each site) stating to get to that other site, the next hop would be the tunnel interface IP address. And so on. I got a little confused here. I think this is why I failed. Overall the interview was rigorous and it being 5 steps is over the top in my opinion. I failed on the third. Those that are applying, re-read your CCNA's thoroughly and make sure you understand most the concepts, except for OSPF, as I'm surprised they didn't ask me any of that, or even ACL.
avatar

Network Support Engineer

Interviewed at Meraki

3.8★
Aug 9, 2021

I written above in the Describe Interview Process part. But run out of space. The second question of the third stage of the interview, being based on VPN. This one was tricky. You are shown a topology of two sites connected through the internet. And a VPN is created from a router of one site, connected to a VPN Gateway of another site (but this is connected to the switch, not on router). You are told to troubleshoot this. This is where I got confused. I just made sure the IKE1 was set up correctly, the ISAKMP SA's were all matching, and then the pre-shared key matched. Then the IPSec SA's were the same. Then attached it to the VPN tunnel. Also, ensured the tunnel interface was configured correctly, where the destination of the tunnel was the public facing address of the other end, and the tunnel source was a loopback address, and ensured both ends of the tunnel interface were on the same subnet. Then made sure there was a static route (on each site) stating to get to that other site, the next hop would be the tunnel interface IP address. And so on. I got a little confused here. I think this is why I failed. Overall the interview was rigorous and it being 5 steps is over the top in my opinion. I failed on the third. Those that are applying, re-read your CCNA's thoroughly and make sure you understand most the concepts, except for OSPF, as I'm surprised they didn't ask me any of that, or even ACL.

Phone Screening: - they tell you a bit about Cisco Meraki - ask basic screening questions - What is DHCP, IP static routing, DNS, ICMP, Traceroute? -usually tell you right there if your moving to the next interview Technical Interview: - STUDY STUDY STUDY (go over some troubleshooting scenarios before this interview) - if a client calls and their computer is not turning on, what would the troubleshooting process look like for that? - If you are searching up something in a browser and it shows you an error message (no specific type of error message), what could that be? - If you have printed something to a printer and the printer has no received the information, what should you do? - Shown a topology with 2 PCs connected to a Switch's ports through f/a cables.... When PC-A pings PC-B, what will happen and how will the PCs be able to communicate. Final Interview: - This is not a technical interview so take a deep breath and relax lol (6-7 questions) - It is important to stay very relaxed and open in this interview because you are going to be talking about your character - Tell me about a time where you had to ask a question to a higher up or co-worker and what did you learn from it? (Be very detailed, you'll think they do not want to hear every little detail but they do!) - When given a task you are unsure of, what steps do you take to complete that task? (they want to know if you are willing to collab with co-workers and ask questions) - Tell me about a time when your workplace or professional environment went through a change you did not agree with or was unexpected. (Be smart about this answer! I answered when I had to switch from being remote to on-site after COVID) - Tell me about a time where there was a client or person who was struggling with something, and how did you handle the situation? - Tell me about a protocol or rule at work that was hard to understand, and how did you adapt to it?
avatar

Network Support Engineer Intern

Interviewed at Meraki

3.8★
Apr 6, 2022

Phone Screening: - they tell you a bit about Cisco Meraki - ask basic screening questions - What is DHCP, IP static routing, DNS, ICMP, Traceroute? -usually tell you right there if your moving to the next interview Technical Interview: - STUDY STUDY STUDY (go over some troubleshooting scenarios before this interview) - if a client calls and their computer is not turning on, what would the troubleshooting process look like for that? - If you are searching up something in a browser and it shows you an error message (no specific type of error message), what could that be? - If you have printed something to a printer and the printer has no received the information, what should you do? - Shown a topology with 2 PCs connected to a Switch's ports through f/a cables.... When PC-A pings PC-B, what will happen and how will the PCs be able to communicate. Final Interview: - This is not a technical interview so take a deep breath and relax lol (6-7 questions) - It is important to stay very relaxed and open in this interview because you are going to be talking about your character - Tell me about a time where you had to ask a question to a higher up or co-worker and what did you learn from it? (Be very detailed, you'll think they do not want to hear every little detail but they do!) - When given a task you are unsure of, what steps do you take to complete that task? (they want to know if you are willing to collab with co-workers and ask questions) - Tell me about a time when your workplace or professional environment went through a change you did not agree with or was unexpected. (Be smart about this answer! I answered when I had to switch from being remote to on-site after COVID) - Tell me about a time where there was a client or person who was struggling with something, and how did you handle the situation? - Tell me about a protocol or rule at work that was hard to understand, and how did you adapt to it?

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