Network intelligence tools in GCP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a VPC network in Google Cloud.

GCP

gcloud compute networks create [1] --subnet-mode=auto

Drag options to blanks, or click blank then click option'

Acloud-net

Bdefault

Cglobal-network

Dmy-vpc-network

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'default' which already exists and causes conflict.

Using invalid characters in the network name.

The command creates a new VPC network named my-vpc-network with automatic subnet creation.

2fill in blank

medium

Complete the code to list all firewall rules in your Google Cloud project.

GCP

gcloud compute firewall-rules [1]

Drag options to blanks, or click blank then click option'

Adescribe

Bdelete

Clist

Dcreate

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'describe' which requires a specific firewall rule name.

Using 'create' or 'delete' which modify firewall rules.

The list command shows all firewall rules in the project.

3fill in blank

hard

Fix the error in the command to test network connectivity to a VM instance.

GCP

gcloud compute [1] ssh my-instance --zone=us-central1-a

Drag options to blanks, or click blank then click option'

Ainstances

Bvm

Cconnect

Dcompute

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'connect' which is not a valid gcloud command group.

Using 'vm' which is not recognized by gcloud.

The correct command group is instances to manage VM instances, including SSH connections.

4fill in blank

hard

Fill both blanks to create a firewall rule allowing HTTP traffic on port 80.

GCP

gcloud compute firewall-rules create allow-http --allow [1]:[2]

Drag options to blanks, or click blank then click option'

Atcp

Budp

C80

D443

Attempts:

3 left

💡 Hint

Common Mistakes

Using UDP instead of TCP.

Using port 443 which is for HTTPS.

The firewall rule must allow tcp traffic on port 80 for HTTP.

5fill in blank

hard

Fill all three blanks to create a route that directs traffic to a specific instance.

GCP

gcloud compute routes create [1] --network [2] --next-hop-instance [3] --next-hop-instance-zone us-central1-a

Drag options to blanks, or click blank then click option'

Acustom-route

Bmy-vpc-network

Cmy-instance

Ddefault-route

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'default-route' which may conflict with existing routes.

Mixing network and instance names incorrectly.

The route named custom-route is created on the my-vpc-network network and directs traffic to the instance my-instance.

Practice

1. What is the main purpose of GCP's Network Intelligence Tools?

easy

A. To manage user permissions

B. To create virtual machines

C. To check and understand cloud network connections

D. To store large amounts of data

Solution

1. Step 1: Understand the role of Network Intelligence Tools

   These tools are designed to help users check and understand how their cloud network connections work.

2. Step 2: Compare with other options

   Creating virtual machines, storing data, and managing permissions are handled by other GCP services, not Network Intelligence Tools.

3. Final Answer:

   To check and understand cloud network connections -> Option C

4. Quick Check:

   Network Intelligence Tools = Check network connections [OK]

Hint: Network tools check connections, not create or store [OK]

Common Mistakes:

• Confusing network tools with VM creation
• Thinking network tools manage data storage
• Assuming network tools handle user permissions

2. Which gcloud command is used to run a connectivity test with Network Intelligence Tools?

easy

A. gcloud network-intelligence connectivity-tests create

B. gcloud compute instances create

C. gcloud storage buckets list

D. gcloud iam roles describe

Solution

1. Step 1: Identify the command for running connectivity tests

   The correct command to run a connectivity test is gcloud network-intelligence connectivity-tests create.

2. Step 2: Eliminate unrelated commands

   Other commands relate to creating instances, listing storage buckets, or describing IAM roles, which are unrelated to network tests.

3. Final Answer:

   gcloud network-intelligence connectivity-tests create -> Option A

4. Quick Check:

   Run connectivity test = gcloud network-intelligence connectivity-tests create [OK]

Hint: Look for 'network-intelligence connectivity-tests create' command [OK]

Common Mistakes:

• Using compute or storage commands instead
• Confusing IAM commands with network tests
• Missing 'network-intelligence' in the command

3. What will be the output of this command?

gcloud network-intelligence connectivity-tests describe test-1

Assuming test-1 exists and ran successfully.

medium

A. Error: test-1 not found

B. Details of the connectivity test including source, destination, and result

C. List of all connectivity tests

D. Command to create a new test

Solution

1. Step 1: Understand the describe command

   The describe command shows detailed information about a specific connectivity test.

2. Step 2: Confirm test existence and success

   Since test-1 exists and ran successfully, the output will include its details like source, destination, and test result.

3. Final Answer:

   Details of the connectivity test including source, destination, and result -> Option B

4. Quick Check:

   Describe test = show test details [OK]

Hint: Describe shows details of one test, not list or errors [OK]

Common Mistakes:

• Expecting a list of tests instead of details
• Assuming error if test exists
• Confusing describe with create command

4. You run gcloud network-intelligence connectivity-tests describe test-2 but get an error saying the test does not exist. What is the likely cause?

medium

A. Network Intelligence Tools are not enabled in the project

B. The command syntax is incorrect

C. The source VM is down

D. The test test-2 was not created

Solution

1. Step 1: Analyze the error message

   The error says the test does not exist, meaning it was never created.

2. Step 2: Check command and environment

   The command syntax is correct, and the error is specific to the test name, not the service or VM status.

3. Final Answer:

   The test test-2 was not created -> Option D

4. Quick Check:

   Describe error = test missing [OK]

Hint: Create test before describing it to avoid 'not exist' error [OK]

Common Mistakes:

• Assuming syntax error without checking test existence
• Blaming service enablement without error details
• Thinking VM status causes test not found error

5. You want to check if a VM in one region can connect to a Cloud SQL instance in another region. Which Network Intelligence Tool and approach should you use?

hard

A. Create and run a connectivity test specifying the VM as source and Cloud SQL as destination

B. Use Cloud Storage to transfer data between regions

C. Run a firewall rule audit to check permissions only

D. Create a new VM in the same region as Cloud SQL

Solution

1. Step 1: Identify the tool for cross-region connectivity checks

   Network Intelligence Tools allow creating connectivity tests between source and destination resources across regions.

2. Step 2: Choose the correct approach

   Creating and running a connectivity test with the VM as source and Cloud SQL as destination directly tests network reachability.

3. Step 3: Eliminate other options

   Cloud Storage is unrelated to connectivity tests, firewall audits check rules but not actual connectivity, and creating a new VM does not test existing network paths.

4. Final Answer:

   Create and run a connectivity test specifying the VM as source and Cloud SQL as destination -> Option A

5. Quick Check:

   Connectivity test = VM to Cloud SQL check [OK]

Hint: Use connectivity test for cross-region VM to Cloud SQL checks [OK]

Common Mistakes:

• Confusing storage transfer with network testing
• Thinking firewall audit alone confirms connectivity
• Creating new VM instead of testing existing connection