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Let’s say you’re a network support engineer at Cisco Meraki, managing a large campus network with multiple core and distribution switches. Three VLANs (VLAN 1, 2, and 3) are configured across the entire network, and Rapid Spanning Tree Protocol (RSTP) is confirmed to be working as expected. One day, a user on VLAN 2 reports they can’t access the internet, but users on VLANs 1 and 3 are unaffected.

How would you systematically diagnose and isolate the root cause of the internet connectivity issue for users on VLAN 2?

How would you investigate why users on VLAN 2 can't access the internet while other VLANs work?

VLAN 2 Connectivity Issue

Cloud Services & Infrastructure

You work as a DevOps engineer for a global SaaS company with services deployed across multiple cloud providers. The team wants to implement a cloud-agnostic CI/CD pipeline that supports safe, zero-downtime deployments for critical microservices. The deployment process should allow for rapid rollback, controlled traffic shifting, and minimal service disruption.

How would you design this CI/CD and deployment system?

Design a cloud-agnostic CI/CD pipeline supporting safe deployments and rollbacks across multiple providers.

Cloud-Agnostic Deployments

Software Quality & DevOps

Suppose there exists a new airline named Jetco that flies domestically across North America. Jetco recently had a study commissioned that tested the boarding time of every airline, and it came out that Jetco had the fastest average boarding times of any airline.

What factors could have biased this result, and what would you look into?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

Boarding Times Bias

A new airline came out as the fastest average boarding times compared to other airlines.  What factors could have biased this result and what would you look into?

Question	Topic	Difficulty	Ask Chance
VLAN 2 Connectivity Issue	Cloud Services & Infrastructure	Medium	Very High
Cloud-Agnostic Deployments	Software Quality & DevOps	Hard	Very High
Boarding Times Bias	Statistics	Medium	Low

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