Routes and routing in GCP - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a route in Google Cloud Platform networking?

A route is a rule that tells network traffic where to go. It connects a source to a destination by specifying the next step or gateway.

beginner

What does the 'next hop' mean in a route?

The 'next hop' is the next place where the traffic should be sent. It can be an IP address, a gateway, or a virtual machine instance.

intermediate

How does Google Cloud decide which route to use when multiple routes match a destination?

Google Cloud uses the most specific route, meaning the route with the longest matching prefix, to decide where to send traffic.

intermediate

What is the difference between a system route and a custom route in GCP?

System routes are automatically created by GCP to connect subnets and internet gateways. Custom routes are created by users to control traffic flow.

beginner

Why is routing important in cloud networks?

Routing directs traffic efficiently, ensuring data reaches the right destination securely and quickly, just like road signs guide drivers to their destinations.

In GCP, what does a route's 'next hop' specify?

A The next destination for network traffic

B The source IP address

C The firewall rule applied

D The storage bucket location

The 'next hop' tells where the traffic should be sent next in the network.

Which route does GCP choose when multiple routes match a destination?

A The route with the shortest prefix

B The route with the longest prefix

C The first route created

D A random route

GCP selects the route with the longest matching prefix, meaning the most specific route.

What type of route is automatically created by GCP for subnets?

A Custom route

B Static route

C Dynamic route

D System route

System routes are automatically created by GCP to connect subnets and gateways.

What is a common use of custom routes in GCP?

A To control traffic flow between networks

B To store data securely

C To create virtual machines

D To monitor network traffic

Custom routes let users control how traffic moves between networks.

Why is routing compared to road signs in real life?

A Because it creates virtual machines

B Because it stores data

C Because it directs traffic to the right destination

D Because it controls user access

Routing guides network traffic just like road signs guide drivers.

Explain what a route is in Google Cloud and why the 'next hop' is important.

Think about how traffic moves from one place to another.

Describe how Google Cloud chooses the best route when multiple routes match a destination.

Consider how to pick the most precise direction.