- (Topic 5)
Your company is using BigQuery as its enterprise data warehouse. Data is distributed over several Google Cloud projects. All queries on BigQuery need to be billed on a single
project. You want to make sure that no query costs are incurred on the projects that contain the data. Users should be able to query the datasets, but not edit them.
How should you configure users’ access roles?

1. A. Add all users to a grou
2. B. Grant the group the role of BigQuery user on the billing project and BigQuerydataViewer on the projects that contain the data.
3. C. Add all users to a grou
4. D. Grant the group the roles of BigQuery dataViewer on the billing project andBigQuery user on the projects that contain the data.
5. E. Add all users to a grou
6. F. Grant the group the roles of BigQuery jobUser on the billing project and BigQuery dataViewer on the projects that contain the data.
7. G. Add all users to a grou
8. H. Grant the group the roles of BigQuery dataViewer on the billing project andBigQuery jobUser on the projects that contain the data.

Correct Answer: A
Reference: https://cloud.google.com/bigquery/docs/running-queries

- (Topic 5)
All compute Engine instances in your VPC should be able to connect to an Active Directory server on specific ports. Any other traffic emerging from your instances is not allowed. You want to enforce this using VPC firewall rules.
How should you configure the firewall rules?

1. A. Create an egress rule with priority 1000 to deny all traffic for all instance
2. B. Create another egress rule with priority 100 to allow the Active Directory traffic for all instances.
3. C. Create an egress rule with priority 100 to deny all traffic for all instance
4. D. Create another egress rule with priority 1000 to allow the Active Directory traffic for all instances.
5. E. Create an egress rule with priority 1000 to allow the Active Directory traffi
6. F. Rely on the implied denyegress rule with priority 100 to block all traffic for all instances.
7. G. Create an egress rule with priority 100 to allow the Active Directory traffi
8. H. Rely on the implied deny egress rule with priority 1000 to block all traffic for all instances.

Correct Answer: B
https://cloud.google.com/vpc/docs/firewalls

- (Topic 5)
Your company is planning to upload several important files to Cloud Storage. After the upload is completed, they want to verify that the upload content is identical to what they have on- premises. You want to minimize the cost and effort of performing this check. What should you do?
A.
1) Use gsutil -m to upload all the files to Cloud Storage.
2) Use gsutil cp to download the uploaded files
3) Use Linux diff to compare the content of the files
B.
1) Use gsutil -m to upload all the files to Cloud Storage.
2) Develop a custom Java application that computes CRC32C hashes
3) Use gsutil ls -L gs://[YOUR_BUCKET_NAME] to collect CRC32C hashes of the uploaded files
4) Compare the hashes
C.
1) Use Linux shasum to compute a digest of files you want to upload
2) Use gsutil -m to upload all the files to the Cloud Storage
3) Use gsutil cp to download the uploaded files
4) Use Linux shasum to compute a digest of the downloaded files 5.Compre the hashes
D.
1) Use gsutil -m to upload all the files to Cloud Storage.
2) Use gsutil hash -c FILE_NAME to generate CRC32C hashes of all on-premises files 3)Use gsutil ls -L gs://[YOUR_BUCKET_NAME] to collect CRC32C hashes of the uploaded files
4)Compare the hashes

1. A.

Correct Answer: D
https://cloud.google.com/storage/docs/gsutil/commands/hash

- (Topic 5)
You want to enable your running Google Container Engine cluster to scale as demand for your application
changes.
What should you do?

1. A. Add additional nodes to your Container Engine cluster using the following command: gcloud container clusters resize CLUSTER_NAME --size 10
2. B. Add a tag to the instances in the cluster with the following command:gcloud compute instances add-tags INSTANCE --tags enable --autoscaling max-nodes-10
3. C. Update the existing Container Engine cluster with the following command:gcloud alpha container clusters update mycluster --enable-autoscaling --min-nodes=1 -- max-nodes=10
4. D. Create a new Container Engine cluster with the following command:gcloud alpha container clusters create mycluster --enable-autocaling --min-nodes=1 --max- nodes=10and redeploy your application.

Correct Answer: B
https://cloud.google.com/kubernetes-engine/docs/concepts/cluster- autoscaler
Cluster autoscaling
--enable-autoscaling
Enables autoscaling for a node pool.
Enables autoscaling in the node pool specified by --node-pool or the default node pool if -- node-pool is not provided.
Where:
--max-nodes=MAX_NODES
Maximum number of nodes in the node pool.
Maximum number of nodes to which the node pool specified by --node-pool (or default node pool if unspecified) can scale.

- (Topic 5)
You need to migrate Hadoop jobs for your company’s Data Science team without modifying the underlying infrastructure. You want to minimize costs and infrastructure management effort. What should you do?

1. A. Create a Dataproc cluster using standard worker instances.
2. B. Create a Dataproc cluster using preemptible worker instances.
3. C. Manually deploy a Hadoop cluster on Compute Engine using standard instances.
4. D. Manually deploy a Hadoop cluster on Compute Engine using preemptible instances.

Correct Answer: B
Reference: https://cloud.google.com/architecture/hadoop/hadoop-gcp-migration-jobs