Firstly I'd like to apologise for posting to this forum, as I was unsure which one to post to.
I've just been told that I can hire another network administrator, my problem is that I've never done or taken a network administration/engineering interview before, so I'm at a loss as to what to ask for apart from simple questions like:
1. How does tcp connection work
2. How would you setup a bgp connection
3. What is the difference between sparse and dense mode multicast?
Personally I can't see what value the above will give apart from screening initial applicants out, after that process I'll need some info on how to interview potential applicants and test their network and problem solving abilities.
Can you please give me typical scenarios or questions as I assume people here have been through this process.
Many thanks for your patience and help.
Sean's suggestion is a very good one (+5) because it will give you an idea of just how much experience and understanding they had at their previous company. I have interviewed CCNPs before and they can vary greatly in ability so you do need to drill down into their experience eg.
one CCNP i interviewed told me he was responsible for the whole MPLS network. After some questions about MPLS it became clear that in actual fact all he did was phone up the ISP to ask for a new circuit every now and then. By using Sean's example you should get an understanding of how much they actually know.
Other than that, use your own knowledge to set the questions ie. don't go off scouring through books to find an obscure example because that won't really tell you anything about them.
So for example with BGP you could simply present a configuration of 2 EBGP peers peering on their loopback addresses but without the ebgp-multihop command and ask why they are not peering successfully.
VPN, you could show a config for 2 peers that isn't working and make the crypto map acls mismatch for either side
An alternative approach is to ask the candidate to draw on a whiteboard a network that they have supported or designed.
You can then ask a wide range of questions to test various areas of their knowledge. You can also to choose to focus on any weaknesses in their knowledge that their presentation may reveal.
- What security measures did you implement?
- What tools do you use to support the network?
- How does redundancy work in your network?
- What happens if device X or Y fails?
- Where are the bandwidth bottlenecks?
- How would you introduce a new routing protocol into the network?
- What is your QoS policy?
It also is also a good test of the candidates "soft" skills:
- Presentation skills
- Ability to sell the merits of a design to a technical audience.
- Tests their ability to think on their feet.
- Tests the candidate's ability to perform under pressure.
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Many many thanks for that insight. I'll try and think of some scenarios based around ospf, eigrp,bgp,nat,vpn.
If someone has some scenarios at hand that can share I'd appreciate it.
Do you have access to a lab or some equipment that they could use ?
Also, what level are you expecting this person to be at ie. CCNA/CCNP etc.