Multiple site hosting in Firebase - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to initialize Firebase hosting for multiple sites.

Firebase

firebase init hosting:[1]

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

Amulti-sites

Bsites

Cmultiple

Dmulti

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'multi' alone without '-sites'.

Using 'multiple' which is not a valid command option.

Using 'sites' which is plural but not the correct command.

The command firebase init hosting:multi-sites initializes hosting for multiple sites in a Firebase project.

2fill in blank

medium

Complete the code to deploy a specific site named 'blog' in Firebase hosting.

Firebase

firebase deploy --only hosting:[1]

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

Amain

Bblog

Cdefault

Dsite1

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'main' which is not the target site here.

Using 'default' which is not the site name.

Using 'site1' which is not defined.

To deploy a specific site, use --only hosting:blog where 'blog' is the site name.

3fill in blank

hard

Fix the error in the Firebase configuration to add a new site named 'shop'.

Firebase

"hosting": [{"site": "[1]", "public": "shop_public"}]

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

Amain

Bstore

Cshop

Ddefault

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'store' instead of 'shop'.

Using 'main' which is a different site.

Using 'default' which is not the new site.

The site name must be 'shop' to match the new site configuration.

4fill in blank

hard

Fill both blanks to configure two sites 'app' and 'admin' in firebase.json.

Firebase

"hosting": [
  {"site": "[1]", "public": "app_public"},
  {"site": "[2]", "public": "admin_public"}
]

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

Aapp

Badmin

Cmain

Ddefault

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the site names.

Using 'main' or 'default' which are not the sites here.

The two sites are named 'app' and 'admin' and must be configured accordingly.

5fill in blank

hard

Fill all three blanks to deploy only the 'app' and 'admin' sites, excluding 'blog'.

Firebase

firebase deploy --only hosting:[1],hosting:[2] --except hosting:[3]

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

Aapp

Badmin

Cblog

Dmain

Attempts:

3 left

💡 Hint

Common Mistakes

Including 'blog' in the --only list.

Excluding the wrong site.

Using 'main' which is not part of this deployment.

Deploy only 'app' and 'admin' sites and exclude 'blog' using --only hosting:app,hosting:admin --except hosting:blog.

Practice

1. What is the main benefit of using multiple site hosting in Firebase?

easy

A. Manage several websites under one Firebase project

B. Increase database storage automatically

C. Enable offline data synchronization

D. Create unlimited Firebase projects

Solution

1. Step 1: Understand multiple site hosting purpose

   Multiple site hosting allows managing multiple websites within a single Firebase project.

2. Step 2: Compare options

   Options B, C, and D relate to other Firebase features, not multiple site hosting.

3. Final Answer:

   Manage several websites under one Firebase project -> Option A

4. Quick Check:

   Multiple site hosting = Manage multiple sites [OK]

Hint: Multiple site hosting means many sites in one project [OK]

Common Mistakes:

• Confusing hosting with database features
• Thinking it creates new Firebase projects
• Assuming it automatically increases storage

2. Which file must you edit to define multiple hosting sites in a Firebase project?

easy

A. package.json

B. index.html

C. .firebaserc

D. firebase.json

Solution

1. Step 1: Identify configuration file for hosting

   The firebase.json file holds hosting configurations including multiple sites.

2. Step 2: Eliminate other files

   index.html is a webpage, package.json is for Node.js dependencies, and .firebaserc stores project aliases but not hosting sites.

3. Final Answer:

   firebase.json -> Option D

4. Quick Check:

   Hosting sites defined in firebase.json [OK]

Hint: Hosting config is always in firebase.json [OK]

Common Mistakes:

• Editing .firebaserc instead of firebase.json
• Confusing package.json with Firebase config
• Trying to define sites in index.html

3. Given this snippet in firebase.json:

{
  "hosting": [
    {
      "target": "siteA",
      "public": "publicA"
    },
    {
      "target": "siteB",
      "public": "publicB"
    }
  ]
}

What command links the target siteA to a Firebase Hosting site ID?

medium

A. firebase target:apply hosting siteA your-site-id

B. firebase deploy --only hosting:siteA

C. firebase init hosting siteA

D. firebase hosting:link siteA your-site-id

Solution

1. Step 1: Understand target linking command

   The command firebase target:apply hosting <target> <site-id> links a target name to a Firebase Hosting site ID.

2. Step 2: Review options

   firebase deploy --only hosting:siteA deploys hosting but does not link targets. firebase init hosting siteA initializes hosting but does not link targets. firebase hosting:link siteA your-site-id is not a valid Firebase CLI command.

3. Final Answer:

   firebase target:apply hosting siteA your-site-id -> Option A

4. Quick Check:

   Target apply links target to site ID [OK]

Hint: Use 'firebase target:apply hosting' to link targets [OK]

Common Mistakes:

• Using deploy instead of target:apply to link
• Trying to link with firebase init
• Assuming 'hosting:link' is a valid command

4. You added two sites in firebase.json hosting array but forgot to run firebase target:apply hosting. What happens when you deploy?

medium

A. Firebase creates new site IDs automatically

B. Both sites deploy successfully with default site IDs

C. Deployment fails with an error about missing target link

D. Only the first site deploys, second is ignored silently

Solution

1. Step 1: Understand target linking requirement

   Each hosting target must be linked to a Firebase Hosting site ID using firebase target:apply hosting.

2. Step 2: Consequence of missing link

   If targets are not linked, deployment fails with an error indicating missing target link.

3. Final Answer:

   Deployment fails with an error about missing target link -> Option C

4. Quick Check:

   Missing target link causes deployment error [OK]

Hint: Always link targets before deploying multiple sites [OK]

Common Mistakes:

• Assuming Firebase auto-links targets
• Expecting silent ignore of unlinked sites
• Thinking deployment creates new site IDs

5. You want to host two websites: a blog and a store, under one Firebase project. You defined them in firebase.json hosting array with targets blog and store. Which sequence correctly sets up and deploys both sites?

hard

A. Run firebase deploy --only hosting:blog,hosting:store directly without linking targets

B. Run firebase target:apply hosting blog blog-site-id and firebase target:apply hosting store store-site-id, then firebase deploy --only hosting

C. Add sites in .firebaserc and run firebase deploy

D. Run firebase init hosting blog and firebase init hosting store then deploy

Solution

1. Step 1: Link each target to its Firebase Hosting site ID

   Use firebase target:apply hosting <target> <site-id> for both blog and store targets.

2. Step 2: Deploy all hosting targets

   Run firebase deploy --only hosting to deploy all defined hosting sites.

3. Final Answer:

   Run target:apply for blog and store, then deploy hosting -> Option B

4. Quick Check:

   Link targets first, then deploy hosting [OK]

Hint: Link targets first, then deploy all hosting sites [OK]

Common Mistakes:

• Deploying without linking targets
• Trying to define sites only in .firebaserc
• Using firebase init hosting multiple times incorrectly