Objective 2.2
PCNEConfiguring VPC routing
Objective 2.2 sits in Implementing a VPC network, which carries 20% of the Cloud Network Engineer exam. The questions below are original, written from the official objective title above, and each explanation cites the Google Cloud page it rests on.
Objective title verbatim from the official objectives. Google Cloud exam page ↗
A worked example
Shown solved, with the whole explanation open: this is what every question here carries.
An engineer has a policy-based route, a subnet route and a static route that all match one packet's destination. Which one is consulted first?
Correct.
Concept
A routing decision runs through classes of route in a fixed order, and a class evaluated earlier settles the packet before the later classes are examined at all.
Why C
All subnet route types are evaluated after policy-based routes but before custom routes, which places policy-based routes ahead of everything else in the routing order.
Source
Routes, checked August 2026Subnet routes : All subnet route types are evaluated after policy based routes but before custom routes . Local subnet route Created automatically for each subnet IP address range VPC network Created, updated, and removed automatically by Google Cloud during subnet lifecycle events. Local subnet routes apply to the whole VPC network. Peering subnet route Represents a subnet IP address range in a different VPC network connected using VPC Network Peering Next hop in the peer VPC network VPC Network Peering provides options for exchanging subnet routes . Created, updated, and removed…
Now you: objective 2.2 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 3
An engineer watches a VLAN attachment carrying a BGP session go down. What becomes of the dynamic routes that used that attachment as their next hop?
Sample question 2 of 3
A team deletes the system-generated default route expecting the VPC network to lose every path to the internet. Which traffic still flows afterwards?
Sample question 3 of 3
An administrator replaces the system-generated default route with a static route whose next hop is a firewall appliance, and public Cloud NAT stops translating. What is needed?
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Read the sources
These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.