1. Most questions were around TCP/IP four layers. Be through with each and every layer. most questions are from layer4 i.e., TCP header fields. ( like the difference between MTU and MSS). 2. Be prepared to answer Linux commands and troubleshooting procedure you follow for network related issues. 3. Be through with Amazon leadership principals. Prepare 2 stores for every principal. Most importantly stories should be real-life stories.
Explain a situation where you work innovatively ? Explain a situation where you worked overriding a company procedure ? Explain a situation where you achieved a Goal and how you would have achieve it better if you have a chance now ? #TCP Questions How does the TCP work ? Explain Flow control and Windowing in detail ? What are the TCP flags ? Explain in detail when they are used ? If one packet is missed during the transfer(From 8,9,10 packet 10 is missed) how can you get that packet back ? What is Acknowledgment and Sequencing ? What is the difference ? #Routing Protocol Questions You will have to select one of the protocol..Either OSPF or BGP .I chose OSPF. What are the OSPF states ? What is happening at each state ? What are the pre-requisite to be OSPF neighbors ? If a Router is in Ex-Stat State what are the possible cause to stay in that state ? How does OSPF prevent loops ? what are the Stubby area ,totally stuby area and NSSA area what are the types of allowed and blocked at each of the area ? How does traceroute work ? Once a link down how does it notified to the rest of the network ? Why we use areas ? #Other Questions What are the steps your PC browsing the Amazon web site ? How does DNS works ? How does trace route works ? When PC 1 communicate to PC 2 how it knows the Window size of the Receiver ? What happens when there is a packet drop in the Network ? How does TCP over come with it ? How does MPLS ping and MPLS traceroute works ? What is a BGP Route reflector ?
A substantial amount of questions were based on management style - KPIs, SLAs - Dealing with problems within the team. - Setting objectives - Failures There were also a few technical questions as well, fundamental questions describing DNS, how web sites work, IMCP, tracert. All in all fairly straightforwrad if you have a strong technical and management background.
1. What is UPS? 2.Difference between single-mode fiber and multimode fiber 3. What is attenuation? 4. What is a VLAN? 5. and there was two questions from behavioral.
Give me an Operational Excellence example ?
bgp all attributes and tcp/ip
Which architecture would you use to build an online bookstore? i.e. drawing boxes and explain the AWS components required for a typical user journey
Mostly technical and geared to finding the right fit for the team.
Network Automation and meaningful projects were of high value to this role
Describe a time where you demonstrated teamwork?
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