Exam Professional Cloud Developer topic 1 question 111 discussion

"the backend services are scaled by managed instance groups in multiple regions", the Internal load balancer is a regional service, so It's A in my opinion. - "An internal HTTP(S) load balancer routes internal traffic to the service running on the VM. Traffic Director works with Cloud Load Balancing to provide a managed ingress experience. You set up an external or internal load balancer, and then configure that load balancer to send traffic to your microservices."

Traffic Director: Traffic Director is a Google Cloud service designed for advanced traffic management across multiple regions and zones. It allows you to route traffic based on various criteria, including HTTP headers. This makes it ideal for loosely coupled applications where you want to dynamically choose backend services based on request attributes. How Traffic Director Works: Routing Rules: You define routing rules in Traffic Director that specify how traffic should be directed based on HTTP headers, path patterns, or other criteria. Backend Services: You associate backend services with your routing rules. These backend services can be managed instance groups, network endpoint groups (NEGs), or other supported backends. Traffic Distribution: When a request arrives, Traffic Director evaluates the routing rules and directs the traffic to the appropriate backend service based on the matching criteria.

https://cloud.google.com/traffic-director/docs/overview#traffic_management:~:text=Advanced%20traffic%20management%2C%20including%20routing%20and%20request%20manipulation%20(based%20on%20hostname%2C%20path%2C%20headers%2C%20cookies%2C%20and%20more)%2C%20enables%20you%20to%20determine%20how%20traffic%20flows%20between%20your%20services

Anthos Service Mesh is a service mesh solution that can be used to invoke distinct service implementations based on the value of an HTTP header in the request. It provides a platform-agnostic way to connect, manage, and secure microservices running on Google Cloud or other environments

Traffic Director is a Google Cloud feature that provides a global traffic management control plane for service mesh architectures. It allows you to configure and manage traffic routing across multiple services and environments.

I go for A: Traffic director is used to direct the traffic to services running in the different regions or within a region based on the HTTP header values.

A as its the only one that let's you router based on headers

https://cloud.google.com/traffic-director/docs/overview#traffic_management Advanced traffic management, including routing and request manipulation (based on hostname, path, headers, cookies, and more), enables you to determine how traffic flows between your services. You can also apply actions like retries, redirects, and weight-based traffic splitting for canary deployments. Advanced patterns like fault injection, traffic mirroring, and outlier detection enable DevOps use cases that improve your resiliency.

A: https://cloud.google.com/traffic-director/docs/set-up-gce-vms

Traffic Director provides global traffic management for service meshes and hybrid deployments. It allows you to configure routing rules based on the values of HTTP headers, so you can direct traffic to different service implementations based on the value of an HTTP header found in the request. With Traffic Director, you can route traffic to different services running in different regions, and it also supports automatic failover, so you can ensure high availability for your backend services. In your case, you can configure Traffic Director to inspect the value of an HTTP header in the request, and then route the traffic to the appropriate service implementation running in different regions. This allows your application to invoke the backend services in a loosely coupled way, and ensures that the backend services can scale independently of the calling application.

D is the answer. https://cloud.google.com/load-balancing/docs/l7-internal/traffic-management Internal HTTP(S) Load Balancing supports advanced traffic management functionality that enables you to use the following features: - Traffic steering. Intelligently route traffic based on HTTP(S) parameters (for example, host, path, headers, and other request parameters).

I think A is correct

I believe, it should be A.

Agree with Option D https://cloud.google.com/load-balancing/docs/l7-internal/traffic-management

Agree with D