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Vue.js and GraphQL Quiz

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Question 1/15

Which command is used to install Apollo Client for a Vue.js application?

Select your answer

npm install vue-router apollo-client graphql

npm install vue-apollo apollo-client graphql

npm install vuex apollo-client graphql

npm install vue-resource graphql

Question 2/15

What is the recommended way to handle pagination with Apollo Client in a Vue.js application?

Select your answer

Switching to REST only for paginated data

Using the built-in pagination plugin for Vue

Combining GraphQL cursor-based pagination with `fetchMore`

By manually changing the DOM to reflect pagination

Question 3/15

What is meant by optimistic UI in the context of Vue.js and Apollo Client?

Select your answer

Falling back to default data if queries fail

Executing queries automatically on component creation

Always showing a success message regardless of the query result

Predictively updating the UI in anticipation of a successful mutation

Question 4/15

What is an advantage of using GraphQL with Vue.js over REST?

Select your answer

GraphQL queries are mandatory, unlike optional REST endpoints.

GraphQL allows clients to request only the data they need.

GraphQL automatically updates all state management in Vue.

GraphQL can only fetch data.

Question 5/15

How can you optimize performance with Apollo Client in a Vue.js application?

Select your answer

Disable caching to get fresh data every time

Avoid using any fragments in GraphQL queries

Use proper caching strategies and refetch queries intelligently

Only use REST endpoints for heavy data loads

Question 6/15

What is the purpose of Apollo Client in a Vue.js application?

Select your answer

To handle RESTful API requests

To compile Vue single-file components

To provide state management like Vuex

To manage and cache GraphQL queries

Question 7/15

How do you declare a mutation in a Vue component using Apollo Client?

<template> <button @click="addBook">Add Book</button> </template> <script> import { gql } from 'apollo-boost'; export default { methods: { addBook() { this.$apollo.mutate({ mutation: gql` mutation AddBook($title: String, $author: String) { addBook(title: $title, author: $author) { id title author } } `, variables: { title: "New Book", author: "Author Name" } }).then(result => { console.log(result); }); } } } </script>

Select your answer

Through Vuex store actions

Using the $apollo.mutate function with a mutation key

Within Vue CSS bindings

By placing a GraphQL string directly in the template

Question 8/15

In a Vue component with Apollo Client, what does the apolloLoadingKey option default to?

Select your answer

fetchingData

loadingApolloState

isFetching

Question 9/15

How does the cache-first fetch policy work with Apollo Client in Vue?

Select your answer

It always fetches the latest data from the network and ignores the cache.

It retries failed requests indefinitely until they succeed.

It fetches data from the cache if available and falls back to network only if the cache is unavailable.

It ensures that queries are always cached, even without results.

Question 10/15

How does Vue Apollo help in handling GraphQL queries within methods or lifecycle hooks?

methods: { fetchBook() { this.$apollo.query({ query: gql` query { book(id: "1") { title } } ` }).then(result => { console.log(result); }); } }

Select your answer

It provides a declarative way to bind data directly to the template

It adds a $apollo object to Vue instances which can be used to perform queries in methods or hooks

It automatically creates mutations for the methods

It republishes the GraphQL schema for reuse

Question 11/15

Which of the following is a correct way to set up a GraphQL query using Apollo in a Vue component?

<template> <div>{{ bookData }}</div> </template> <script> import { gql } from 'apollo-boost'; export default { data() { return { bookData: null }; }, apollo: { bookData: gql` query { book { title author } } ` } } </script>

Select your answer

Using Apollo's provider inside the data function

Using Vuex to store the query response

Embedding the query directly into the template

Specifying the query inside the apollo option in the component

Question 12/15

What is the GraphQL type created by Apollo Client to help identify and manage individual items in the cache?

Select your answer

__typename

IdentifiableType

ApolloID

uniqueType

Question 13/15

What role does the useQuery hook play in Apollo Client when used with Vue Composition API?

Select your answer

It compiles Vue templates

It is used to initiate GraphQL subscriptions

It acts as a replacement for the Vuex store

It manages GraphQL queries within the new Composition API

Question 14/15

How do you handle errors globally in a Vue.js application using Apollo Client?

 import { ApolloLink } from 'apollo-link'; import { onError } from 'apollo-link-error'; const errorLink = onError(({ graphQLErrors, networkError }) => { if (graphQLErrors) { graphQLErrors.forEach(({ message, locations, path }) => { console.log(`[GraphQL error]: Message: ${message}, Location: ${locations}, Path: ${path}`); }); } if (networkError) { console.log(`[Network error]: ${networkError}`); } });

Select your answer

By using a custom directive to catch errors

By logging all errors to the console directly from the component

By using the onError() link from Apollo Client to intercept and handle errors

Through the Vuex state management system

Question 15/15

How can you use Vue to handle server-side rendering (SSR) with GraphQL?

Select your answer

Avoid using GraphQL for SSR in Vue completely

Depend entirely on REST APIs for server-side data

Use a custom Vue directive for SSR

Incorporate the SSR cache into the Apollo Client for Vue

Your Results

You did not answer any questions correctly.

Your Answers

Question 1/15

😊 Your answer was correct 🙁 Your answer was incorrect

Which command is used to install Apollo Client for a Vue.js application?

Available answers

npm install vue-router apollo-client graphql

npm install vue-apollo apollo-client graphql

npm install vuex apollo-client graphql

npm install vue-resource graphql

The command `npm install vue-apollo apollo-client graphql` installs Apollo Client and its dependencies for use in a Vue.js application.

Question 2/15

😊 Your answer was correct 🙁 Your answer was incorrect

What is the recommended way to handle pagination with Apollo Client in a Vue.js application?

Available answers

Switching to REST only for paginated data

Using the built-in pagination plugin for Vue

Combining GraphQL cursor-based pagination with `fetchMore`

By manually changing the DOM to reflect pagination

The recommended approach is to use GraphQL's cursor-based pagination along with Apollo's `fetchMore` to load additional pages of data efficiently.

Question 3/15

😊 Your answer was correct 🙁 Your answer was incorrect

What is meant by optimistic UI in the context of Vue.js and Apollo Client?

Available answers

Falling back to default data if queries fail

Executing queries automatically on component creation

Always showing a success message regardless of the query result

Predictively updating the UI in anticipation of a successful mutation

Optimistic UI allows an application to update the UI immediately after a mutation without waiting for the server response, providing a smoother user experience.

Question 4/15

😊 Your answer was correct 🙁 Your answer was incorrect

What is an advantage of using GraphQL with Vue.js over REST?

Available answers

GraphQL queries are mandatory, unlike optional REST endpoints.

GraphQL allows clients to request only the data they need.

GraphQL automatically updates all state management in Vue.

GraphQL can only fetch data.

The primary advantage of using GraphQL is that it allows clients to specify exactly what data they need, reducing over-fetching and under-fetching data.

Question 5/15

😊 Your answer was correct 🙁 Your answer was incorrect

How can you optimize performance with Apollo Client in a Vue.js application?

Available answers

Disable caching to get fresh data every time

Avoid using any fragments in GraphQL queries

Use proper caching strategies and refetch queries intelligently

Only use REST endpoints for heavy data loads

Optimizing performance with Apollo Client involves using effective caching strategies and smartly refetching queries only when necessary to minimize unnecessary network requests.

Question 6/15

😊 Your answer was correct 🙁 Your answer was incorrect

What is the purpose of Apollo Client in a Vue.js application?

Available answers

To handle RESTful API requests

To compile Vue single-file components

To provide state management like Vuex

To manage and cache GraphQL queries

Apollo Client is used to manage and cache GraphQL queries and results, making it easy to integrate GraphQL into a Vue.js application.

Question 7/15

😊 Your answer was correct 🙁 Your answer was incorrect

How do you declare a mutation in a Vue component using Apollo Client?

<template> <button @click="addBook">Add Book</button> </template> <script> import { gql } from 'apollo-boost'; export default { methods: { addBook() { this.$apollo.mutate({ mutation: gql` mutation AddBook($title: String, $author: String) { addBook(title: $title, author: $author) { id title author } } `, variables: { title: "New Book", author: "Author Name" } }).then(result => { console.log(result); }); } } } </script>

Available answers

Through Vuex store actions

Using the $apollo.mutate function with a mutation key

Within Vue CSS bindings

By placing a GraphQL string directly in the template

Mutations in Vue components are declared using the `$apollo.mutate` function, allowing updates to be performed and handled within the component methods.

Question 8/15

😊 Your answer was correct 🙁 Your answer was incorrect

In a Vue component with Apollo Client, what does the <code>apolloLoadingKey</code> option default to?

Available answers

fetchingData

loadingApolloState

isFetching

In a Vue component using Apollo Client, `apolloLoadingKey` defaults to `loading`, which can be used in data bindings and computed properties to display Loading UI.

Question 9/15

😊 Your answer was correct 🙁 Your answer was incorrect

How does the <code>cache-first</code> fetch policy work with Apollo Client in Vue?

Available answers

It always fetches the latest data from the network and ignores the cache.

It retries failed requests indefinitely until they succeed.

It fetches data from the cache if available and falls back to network only if the cache is unavailable.

It ensures that queries are always cached, even without results.

The `cache-first` fetch policy uses cached data if it exists, resorting to a network request only if the data is not available in the cache, optimizing for performance.

Question 10/15

😊 Your answer was correct 🙁 Your answer was incorrect

How does Vue Apollo help in handling GraphQL queries within methods or lifecycle hooks?

methods: { fetchBook() { this.$apollo.query({ query: gql` query { book(id: "1") { title } } ` }).then(result => { console.log(result); }); } }

Available answers

It provides a declarative way to bind data directly to the template

It adds a $apollo object to Vue instances which can be used to perform queries in methods or hooks

It automatically creates mutations for the methods

It republishes the GraphQL schema for reuse

Vue Apollo adds a `$apollo` object to Vue components, allowing developers to perform GraphQL queries and handle results within methods or lifecycle hooks directly.

Question 11/15

😊 Your answer was correct 🙁 Your answer was incorrect

Which of the following is a correct way to set up a GraphQL query using Apollo in a Vue component?

<template> <div>{{ bookData }}</div> </template> <script> import { gql } from 'apollo-boost'; export default { data() { return { bookData: null }; }, apollo: { bookData: gql` query { book { title author } } ` } } </script>

Available answers

Using Apollo's provider inside the data function

Using Vuex to store the query response

Embedding the query directly into the template

Specifying the query inside the apollo option in the component

In a Vue component, GraphQL queries can be defined inside the `apollo` option, allowing Apollo Client to automatically fetch data and bind it to component properties.

Question 12/15

😊 Your answer was correct 🙁 Your answer was incorrect

What is the GraphQL type created by Apollo Client to help identify and manage individual items in the cache?

Available answers

__typename

IdentifiableType

ApolloID

uniqueType

Apollo Client uses the `__typename` field along with object IDs to uniquely identify objects, helping manage caching and updating queries.

Question 13/15

😊 Your answer was correct 🙁 Your answer was incorrect

What role does the useQuery hook play in Apollo Client when used with Vue Composition API?

Available answers

It compiles Vue templates

It is used to initiate GraphQL subscriptions

It acts as a replacement for the Vuex store

It manages GraphQL queries within the new Composition API

When using the Vue Composition API with Apollo Client, `useQuery` is used to execute and manage queries effectively within the composition functions.

Question 14/15

😊 Your answer was correct 🙁 Your answer was incorrect

How do you handle errors globally in a Vue.js application using Apollo Client?

 import { ApolloLink } from 'apollo-link'; import { onError } from 'apollo-link-error'; const errorLink = onError(({ graphQLErrors, networkError }) => { if (graphQLErrors) { graphQLErrors.forEach(({ message, locations, path }) => { console.log(`[GraphQL error]: Message: ${message}, Location: ${locations}, Path: ${path}`); }); } if (networkError) { console.log(`[Network error]: ${networkError}`); } });

Available answers

By using a custom directive to catch errors

By logging all errors to the console directly from the component

By using the <code>onError()</code> link from Apollo Client to intercept and handle errors

Through the Vuex state management system

Errors in Apollo Client can be handled by utilizing the `onError` link, which allows you to globally capture and manage errors from GraphQL operations.

Question 15/15

😊 Your answer was correct 🙁 Your answer was incorrect

How can you use Vue to handle server-side rendering (SSR) with GraphQL?

Available answers

Avoid using GraphQL for SSR in Vue completely

Depend entirely on REST APIs for server-side data

Use a custom Vue directive for SSR

Incorporate the SSR cache into the Apollo Client for Vue

To handle server-side rendering in Vue with GraphQL, the SSR cache of Apollo Client should be incorporated, allowing server-rendered content to be effectively synchronized.