Technical Site Speed Optimization for SEO - 40 MCQs

0

Welcome to King Peedia. I'm Devendra Singh, and here you'll find 40 MCQs on Technical Site Speed Optimization for SEO. Our site offers SEO MCQs to help you prepare for interviews and exams. We cover topics in this MCQs like page load times, browser caching, and more.


technical-site-speed-optimization-seo-40-mcqs

(toc) #title=(Table of Content)


1. What is the recommended page load time for optimal SEO performance?

   a) Less than 10 seconds

   b) Less than 5 seconds

   c) Less than 2 seconds

   d) Less than 1 minute


   Answer: c) Less than 2 seconds

   

   Explanation: Studies have shown that the optimal page load time for SEO is less than 2 seconds. Beyond this threshold, there's a higher likelihood of users abandoning the page, leading to poor SEO performance.


2. Which of the following tools can be used to measure website speed performance?

   a) Google Analytics

   b) Bing Webmaster Tools

   c) Google PageSpeed Insights

   d) All of the above


   Answer: c) Google PageSpeed Insights

   

   Explanation: While Google Analytics and Bing Webmaster Tools provide valuable insights, Google PageSpeed Insights specifically analyzes website performance and offers recommendations for improvement.


3. What is the purpose of using a responsive image technique in website optimization?

  a) To ensure images are loaded in sequential order

  b) To serve different image sizes based on device capabilities and screen sizes

  c) To preload images before they are requested

  d) To defer loading of images until they are needed


  Answer: b) To serve different image sizes based on device capabilities and screen sizes


  Explanation: Responsive image techniques involve delivering images in different sizes and resolutions based on the device's capabilities and screen sizes, optimizing both performance and visual quality.


4. Which of the following techniques can help reduce server response time?

   a) Minification

   b) Compression

   c) Caching

   d) All of the above


   Answer: d) All of the above

   

   Explanation: Minification reduces file size by removing unnecessary characters, compression reduces the size of files transmitted over the network, and caching stores frequently accessed data to reduce server load and response time.


5. What HTTP status code indicates that a resource has been permanently moved to a new location?

   a) 200 OK

   b) 301 Moved Permanently

   c) 404 Not Found

   d) 500 Internal Server Error


   Answer: b) 301 Moved Permanently

   

   Explanation: A 301 redirect informs search engines that a page has been permanently moved to a new location, preserving SEO value from the old URL to the new one.


6. Which of the following image formats is best suited for web usage due to its small file size?

   a) BMP

   b) TIFF

   c) PNG

   d) JPEG


   Answer: d) JPEG

   

   Explanation: JPEG (Joint Photographic Experts Group) format is widely used for web images due to its small file size and high compatibility.


7. Which HTTP header can be utilized to enable compression of resources transferred between the server and the browser?

  a) Compression-Encoding

  b) GZIP-Compression

  c) Content-Encoding

  d) Data-Compression


  Answer: c) Content-Encoding


  Explanation: The Content-Encoding header specifies the encoding format used to compress resources, such as GZIP, enabling browsers to decompress the content for faster transmission.


8. Which attribute can be added to HTML image tags to specify a smaller version of the image to be loaded initially?

   a) alt

   b) srcset

   c) preload

   d) placeholder


   Answer: b) srcset

   

   Explanation: The srcset attribute allows you to specify multiple image sources and their sizes, enabling the browser to choose the most appropriate image based on the device's characteristics.


9. Which technique involves loading content only when it becomes visible in the browser's viewport?

   a) Lazy loading

   b) Preloading

   c) Deferred loading

   d) Async loading


   Answer: a) Lazy loading

   

   Explanation: Lazy loading delays the loading of non-critical resources (such as images) until the user scrolls down and those resources become visible in the viewport, reducing initial page load time.


10. What does GZIP compression primarily compress to reduce file size?

    a) HTML files

    b) JavaScript files

    c) CSS files

    d) All of the above


    Answer: d) All of the above


    Explanation: GZIP compression is applied to various types of files, including HTML, JavaScript, CSS, and others, to reduce their size during transmission, thus improving website speed.


11. Which attribute can be added to CSS and JavaScript files to instruct the browser to cache them?

    a) cache-control

    b) expire-time

    c) cache-expire

    d) cache-duration


    Answer: a) cache-control


    Explanation: The cache-control attribute allows developers to specify caching directives for a particular resource, including whether and for how long the resource should be cached by the browser.


12. What does the acronym CDN stand for in the context of website optimization?

    a) Content Distribution Network

    b) Centralized Data Network

    c) Cached Data Network

    d) Compressed Data Node


    Answer: a) Content Distribution Network


    Explanation: CDNs distribute website content across multiple servers located in different geographic locations, reducing latency and improving page load times by serving content from the nearest server to the user.


13. Which of the following techniques can help reduce the number of HTTP requests made by a webpage?

    a) Concatenation

    b) Minification

    c) Spriting

    d) All of the above


    Answer: d) All of the above


    Explanation: Concatenation combines multiple files into a single file, minification removes unnecessary characters from files, and spriting combines multiple images into a single image, all aimed at reducing the number of HTTP requests.


14. Which technique involves combining multiple images into a single image file to reduce HTTP requests?

  a) Minification

  b) Concatenation

  c) Spriting

  d) Lazy loading


  Answer: c) Spriting


  Explanation: Spriting involves combining multiple images into a single image file and using CSS background positioning to display specific images within the sprite, reducing the number of HTTP requests.


15. Which of the following tags can be used to specify the character encoding of a webpage?

    a) <charset>

    b) <meta charset="">

    c) <encoding>

    d) <character-set>


    Answer: b) <meta charset="">


    Explanation: The <meta charset=""> tag is used within the <head> section of an HTML document to specify the character encoding, such as UTF-8, ensuring proper rendering of text on the webpage.


16. What does the term "critical rendering path" refer to in website optimization?

  a) The sequence of resources required to render the visible portion of a webpage

  b) The process of rendering 3D graphics using WebGL

  c) The method for prioritizing server responses based on critical content

  d) The technique for caching critical resources on the client-side


  Answer: a) The sequence of resources required to render the visible portion of a webpage


  Explanation: The critical rendering path is the sequence of resources required to render the visible portion of a webpage, including HTML, CSS, JavaScript, and images, prioritized for optimal performance.


17. Which HTTP header can be utilized to enable browser caching for a specific resource?

    a) Cache-Control

    b) Expires

    c) Last-Modified

    d) Set-Cookie


    Answer: a) Cache-Control


    Explanation: The Cache-Control header allows developers to specify caching directives for a particular resource, such as the maximum age or whether the resource can be cached.


18. What is the purpose of image optimization in website speed optimization?

    a) To increase the resolution of images

    b) To reduce the number of images on a webpage

    c) To decrease the file size of images without significantly affecting quality

    d) To convert images to vector format


    Answer: c) To decrease the file size of images without significantly affecting quality


    Explanation: Image optimization involves compressing and formatting images in a way that reduces their file size while maintaining acceptable visual quality, thereby improving page load times.


19. Which technique involves deferring the loading of non-critical JavaScript until after the initial page load?

    a) Preloading

    b) Lazy loading

    c) Async loading

    d) Deferred loading


    Answer: d) Deferred loading


    Explanation: Deferred loading delays the loading of non-essential JavaScript until after the initial page load, allowing critical content to load first and improving perceived performance.


20. Which of the following actions can help reduce server response time?

    a) Upgrading server hardware

    b) Enabling HTTP/2

    c) Minimizing server-side processing

    d) All of the above


    Answer: d) All of the above


    Explanation: Upgrading server hardware, enabling HTTP/2 to multiplex multiple requests over a single connection, and minimizing server-side processing can collectively reduce server response time.


21. Which of the following HTTP headers can be utilized to enable browser caching for a specific resource?

  a) Cache-Control

  b) Expires

  c) Last-Modified

  d) Set-Cookie


  Answer: a) Cache-Control


  Explanation: The Cache-Control header allows developers to specify caching directives for a particular resource, such as the maximum age or whether the resource can be cached.


22. Which of the following is NOT a recommended method for reducing CSS delivery time?

    a) Inline critical CSS

    b) External CSS files

    c) Internal CSS styles

    d) Defer non-critical CSS


    Answer: b) External CSS files


    Explanation: External CSS files can be optimized through techniques such as minification, but they are not typically inlined or deferred like critical CSS to improve initial rendering speed.


23. Which technique involves loading JavaScript files asynchronously without blocking the rendering of the page?

  a) Preloading

  b) Lazy loading

  c) Defer loading

  d) Async loading


  Answer: d) Async loading


Explanation: Async loading involves loading JavaScript files asynchronously, allowing them to be downloaded and executed without blocking the rendering of the page, improving performance.


24. Which attribute can be added to HTML links to specify that the linked document should be preloaded during idle time?

    a) prefetch

    b) preload

    c) prerender

    d) precache


    Answer: b) preload


    Explanation: The preload attribute hints to the browser that a resource should be fetched during idle time to improve future page load times, typically used for critical resources.


25. What does the term "time to interactive" (TTI) measure in website performance?

    a) The time taken for the initial rendering of the webpage

    b) The time taken for all resources to be fully loaded

    c) The time taken for the webpage to become fully interactive and responsive

    d) The time taken for the server to respond to a request


    Answer: c) The time taken for the webpage to become fully interactive and responsive


    Explanation: Time to interactive (TTI) measures how long it takes for a webpage to become fully interactive, meaning users can interact with elements on the page and receive responses without delays.


26. What is the purpose of implementing HTTP/3 in website optimization?

  a) To improve server-side caching efficiency

  b) To prioritize critical CSS and JavaScript files

  c) To reduce latency and improve reliability through QUIC protocol

  d) To optimize database queries for faster response times


  Answer: c) To reduce latency and improve reliability through QUIC protocol


  Explanation: HTTP/3, based on the QUIC protocol, aims to reduce latency and improve reliability by introducing features such as connection multiplexing and encryption, enhancing website performance.


27. What is the purpose of server-side caching in website optimization?

    a) To store frequently accessed data on the user's device

    b) To store frequently accessed data on the server

    c) To store frequently accessed data on a CDN

    d) To store frequently accessed data on a proxy server


    Answer: b) To store frequently accessed data on the server


    Explanation: Server-side caching involves storing frequently accessed data, such as database queries or generated HTML content, on the server to reduce processing time and improve response times for subsequent requests.


28. Which HTTP header indicates the last-modified timestamp of a resource?

    a) Last-Modified

    b) Cache-Control

    c) Expires

    d) ETag


    Answer: a) Last-Modified


    Explanation: The Last-Modified header indicates the last-modified timestamp of a resource, allowing browsers to determine whether a cached version of the resource is still valid.


29. What is the purpose of using a responsive design approach in website optimization?

    a) To optimize websites for search engines only

    b) To ensure websites are compatible with all web browsers

    c) To create websites that adapt to various screen sizes and devices

    d) To improve server response times


    Answer: c) To create websites that adapt to various screen sizes and devices


    Explanation: Responsive design allows websites to adapt their layout and content dynamically based on the screen size and device type, providing a better user experience across different devices and improving SEO by catering to mobile users.


30. What is the purpose of deferring non-critical JavaScript in website optimization?

  a) To prioritize the loading of critical JavaScript files

  b) To load JavaScript files only when they become visible in the viewport

  c) To delay the execution of non-essential JavaScript until after the initial page load

  d) To compress JavaScript files further


  Answer: c) To delay the execution of non-essential JavaScript until after the initial page load


  Explanation: Deferring non-critical JavaScript involves delaying the execution of non-essential scripts until after the initial page load, allowing critical content to load first and improving perceived performance.


31. Which attribute can be added to HTML script tags to load JavaScript files asynchronously?

    a) async

    b) defer

    c) load

    d) asyncronous


    Answer: a) async


    Explanation: The async attribute allows JavaScript files to be loaded asynchronously, meaning they are downloaded and executed without blocking the rendering of the page.


32. What is the purpose of resource hints (e.g., prefetch, preload) in website optimization?

    a) To instruct search engines on how to crawl web pages

    b) To provide additional information about resources to the browser for optimization

    c) To hide sensitive information from being indexed by search engines

    d) To increase the security of server responses


    Answer: b) To provide additional information about resources to the browser for optimization


    Explanation: Resource hints are HTML elements used to provide additional information to the browser about resources (e.g., scripts, stylesheets, fonts) that may be needed to optimize page load times, such as prefetching or preloading.


33. What is the purpose of the "defer" attribute in HTML script tags?

    a) To load JavaScript files asynchronously

    b) To prevent scripts from executing until the HTML content is fully parsed

    c) To prioritize the loading of critical scripts

    d) To instruct browsers not to cache the script


    Answer: b) To prevent scripts from executing until the HTML content is fully parsed


    Explanation: The "defer" attribute delays the execution of JavaScript files until after the HTML content is fully parsed, ensuring that scripts do not interfere with the rendering of the page.


34. Which of the following techniques can help reduce the initial server response time?

    a) Optimizing database queries

    b) Enabling HTTP/2

    c) Implementing server-side caching

    d) All of the above


    Answer: d) All of the above


    Explanation: Optimizing database queries, enabling HTTP/2 to multiplex requests, and implementing server-side caching can collectively reduce the initial server response time, improving overall website speed.


35. What is the purpose of lazy loading images in website optimization?

    a) To prevent images from loading at all

    b) To load images only when they become visible in the viewport

    c) To load images in random order

    d) To compress images further


    Answer: b) To load images only when they become visible in the viewport


    Explanation: Lazy loading defers the loading of images until they are about to be displayed in the user's viewport, reducing initial page load times and improving perceived performance.


36. Which attribute can be added to HTML link tags to prioritize the loading of critical CSS?

    a) prefetch

    b) preload

    c) prerender

    d) prefetch-css


    Answer: b) preload


    Explanation: The "preload" attribute can be added to HTML link tags to prioritize the loading of critical CSS, ensuring that essential styles are applied to the page as soon as possible.


37. What is the purpose of reducing the number of HTTP requests in website optimization?

    a) To decrease server response time

    b) To improve browser caching

    c) To minimize network latency

    d) All of the above


    Answer: c) To minimize network latency


    Explanation: Reducing the number of HTTP requests decreases the time it takes for resources to travel between the client and server, thereby minimizing network latency and improving overall page load times.


38. What is the primary purpose of browser caching in website optimization?

  a) To store user-specific data on the server

  b) To store website data on the user's device

  c) To store website data on a CDN

  d) To store website data on a proxy server


  Answer: b) To store website data on the user's device


  Explanation: Browser caching involves storing website data, such as HTML, CSS, JavaScript, and images, locally on the user's device. This allows subsequent visits to the website to load faster by retrieving data from the cache rather than downloading it from the server again.


39. What does the "time to first paint" (TTFP) measure in website performance?

    a) The time taken for the initial rendering of the webpage

    b) The time taken for all resources to be fully loaded

    c) The time taken for the webpage to become fully interactive and responsive

    d) The time taken for the first pixel to be painted on the screen


    Answer: d) The time taken for the first pixel to be painted on the screen


    Explanation: Time to first paint (TTFP) measures how long it takes for the browser to render the first visible pixel on the screen, indicating when the user starts to perceive content loading.


40. What does the term "time to first byte" (TTFB) measure in website performance?

  a) The time taken for the initial rendering of the webpage

  b) The time taken for the server to respond to a request and start sending data

  c) The time taken for all resources to be fully loaded

  d) The time taken for the webpage to become fully interactive and responsive


  Answer: b) The time taken for the server to respond to a request and start sending data


  Explanation: Time to first byte (TTFB) measures the time elapsed from the moment a client sends an HTTP request to the server until the server sends the first byte of data in response.



Post a Comment

0 Comments
Post a Comment (0)
To Top