Frequently Asked Questions: JSNAD and JSNSD

What is the OpenJS Node.js Application Developer (JSNAD) Certification?

The OpenJS Node.js Application Developer certification is designed for anyone looking to demonstrate competence with Node.js to create applications of any kind, with a focus on knowledge of Node.js core APIs

What is the OpenJS Node.js Services Developer (JSNSD) Certification?

The OpenJS Node.js Services Developer certification is designed for anyone looking to demonstrate competence in creating RESTful Node.js Servers and Services (or Microservices) with a particular emphasis on security practices.

How much does the exam cost?

Please review our Training & Certification Catalog for pricing information.

How is the exam proctored?

The certification exam is proctored remotely via streaming audio, video, and screen sharing feeds. The screensharing feed allows proctors to view candidates' desktops (including all monitors). The audio, video, and screen sharing feeds will be stored for a limited period of time in the event that there is a subsequent need for review.
The main function of the proctors during the exam is to facilitate the check-in process and to monitor the session. They do not, nor are they expected to, have the technical expertise to weigh in or provide insight on the exam servers or exam content. Proctoring for Linux Foundation Exams is explained here.
If you’re interested in taking an online proctored exam through PSI and want a better understanding of what to expect before registering, watch the PSI Online Proctoring Experience video.
Candidates should review the Bridge FAQ Information, published by PSI, to prepare for the Secure Browser installation and be aware of how to resolve issues with the Installation/download or launch of their exam:

What are the system requirements to take the exam?

Candidates should run the PSI Online Proctoring System Check to verify that their machine meets the technical requirements for taking a proctored exam.
The online proctored exam is taken on PSI proctoring platform "Bridge", using the PSI Secure Browser (a web browser created to guarantee a secure exam delivery over a virtual connection).
The secure browser download/installation will being when you Select “Launch exam” from the PSI Dashboard.
Candidates must provide their own computer with:
  • Supported OS: Please review the System Requirements, published by PSI, in particular the supported Operating System Information.
  • All browsers are supported, however PSI highly recommends using the latest version of Google Chrome for the best exam scheduling experience, and because the secure browser is Chrome-based and will give a more accurate experience.
  • One active monitor (either built in or external) (NOTE: Dual Monitors are NOT supported) The Linux Foundation recommends a screen size of 15” or higher to support the ExamUI.
  • Reliable internet access
    • Ensure others on the same internet connection are not performing activities that use excessive bandwidth (i.e. holding conference calls, streaming content, gaming, etc.)
    • A wired connection is often more stable and robust than a wireless connection
    • Turn off bandwidth-intensive services (e.g. file sync, dropbox, BitTorrent)
  • Microphone
    • Please check to make sure it is working before you start your exam session.
  • Webcam
    • Ensure the webcam is capable of being moved as you will have to pan your surroundings to check for potential violations of exam policy.
    • If you will be testing from an employer-provide ISP or will use an employer provided machine, please ensure that streaming will be allowed using WebRTC.
Candidates are not allowed to have other applications or browser windows running except the one on which the Exam is being shown.
Please review the PSI Bridge Platform: System Requirements to ensure your machine will meet the requirements of our online proctor.

What are the Testing Environment requirements to take the exam?

Below are the expectations for an acceptable testing environment:
  • Clutter-free work area
    • No objects such as paper, writing implements, electronic devices, or other objects on top of surface
    • No objects such as paper, trash bins, or other objects below the testing surface
  • Clear walls
    • No paper/print outs hanging on walls
    • Paintings and other wall décor is acceptable
    • Candidates will be asked to remove non-décor items prior to the exam being released
  • Lighting
    • Space must be well lit so that proctor is able to see candidate’s face, hands, and surrounding work area
    • No bright lights or windows behind the examinee
  • Other
    • Candidate must remain within the camera frame during the examination
    • Space must be private where there is no excessive noise. Public spaces such as coffee shops, stores, open office environments, etc. are not allowed.

What are the ID requirements to take the exam?

Candidates need to provide identification (ID) that meets the requirements outlined below:
  • All IDs must be a valid (unexpired) Government-issued original, physical document (not photocopied or electronic)
  • IDs must include the candidate's name, photo, and signature*
    • *Government-issued biometric IDs that do not contain signature will be accepted
  • The first and last name on the ID must exactly match the verified name entered on your exam checklist
  • Acceptable forms of ID:
    • International travel passport
    • Government-issued driver’s license/permit
    • Government-Issued local language ID (with photo and signature)
    • National identity card State or province-issued identity card
    • Alien registration card (green card or permanent resident/visa)
    • 住民基本台帳 (Basic Resident Register with photo) or マイナンバーカード(My Number Card)
  • Minors, between the age of 16-18, are permitted to take an online proctored exam with PSI, provided they complete the following requirements:
    • A Parent/Guardian must complete the Parental Release for Testing of Minors form, and submit it to, at least 2 weeks prior to the scheduled date of the exam
    • At check in, the minor candidate must present a valid student ID as a form of identification
    • During the PSI check-in process, the candidate's guardian must also present a valid ID and must provide verbal consent during the PSI check-in process.

Sanctioned Countries

Exams may be administered to citizens of a sanctioned country listed below PROVIDED the citizens are tested OUTSIDE the sanctioned country and their exam registration and current ID show an address OUTSIDE the sanctioned country.
  • Cuba
  • Iran
  • Syria
  • North Korea
  • Crimea Region of Ukraine

How long will the exam take?

Candidates are allowed 2 hours to complete the JSNAD and JSNSD Exams.

What score is needed to pass the exam?

For the JSNAD Exam, a score of 68% or above must be earned to pass. For the JSNSD Exam, a score of 68% or above must be earned to pass.

How is my exam scored?

Upon completion, exams are scored automatically and barring any exceptions or technical difficulties, a score report will be sent to the candidate via email within 24 hours from the time that the exam was completed.

What resources am I allowed to access during my exam?

Please refer to our published information: OpenJS Resources Allowed

What application version is running in the Exam Environment?

The exam environment is currently running Node.js Version 18 LTS. As the current Long Term Support version changes the environment will be updated to the latest LTS. See for information on the Node.js LTS schedule.

What language(s) is the exam offered In?

Exam tasks are available in English and Chinese **
** To register for the Chinese Only exam content, and to obtain the benefit of a Chinese speaking proctor you must register for: OpenJS Node.js Application Developer (China Version) (JSNAD) OpenJS Node.js Services Developer (China Version) (JSNSD)

How long is my certification valid for?

JSNAD and JSNSD Certifications are valid for 3 years.

How do I renew my certification?

Candidates have the option to retake and pass the exam to renew their certification. Certification Renewal must be completed prior to the certification expiration date. The renewed certification will be valid for a further 3 years effective from the date the exam is passed.

Is there training to prepare for the certification exam?

JSNAD: The Linux Foundation offers The Node.js Application Development (LFW211) a self-paced E-Learning course to improve your versatility in creating various types of Node.js applications. Covering a broad set of use cases and using Node.js core APIs with selected ecosystem libraries, this course prepares you for JSNAD Certification Exam.
The following resources are considered Recommended Reading for the JSNAD Exam: ● Node.js 18.x.Documentation, ● Node Cookbook, 3rd Edition, Chapters 1, 2, 3, 4 and 9 ●
JSNSD: The Linux Foundation offers Node.js Services Development (LFW212) a self-paced E-Learning course that provides a deep dive into Node core HTTP clients and servers, web servers, RESTful services and web security essentials. With a major focus on Node.js services and security this content is an essential counterpart to the Node.js Application Development (LFW211) course, and will prepare you for the OpenJS Node.js Services Developer (JSNSD) exam.
The following resources are considered Recommended Reading for the JSNSD Exam: ● Node.js 18.x Documentation, ● Node Cookbook, 3rd Edition, Chapters 5, 7, 8, 10 ● Documentation of any preferred web frameworks ●

How was the exam content created?

The Linux Foundation and OpenJS Foundation worked with industry experts to craft relevant and challenging exams. These experts include folks from NearForm and Node Source, as well as members of the Node.js community and ecosystem

What is the recourse for someone who attributes exam failure to the testing environment?

We understand that taking the exams via remote desktop and a new platform environment may cause a lag time for some, however there are trade offs needed to offer this exam remotely. We will continually monitor and seek to improve the testing experience over time. When eligible, we do offer free retakes for those who do not pass the first time, regardless of why.
If you need additional help, please login with your LF Account to and use the search bar to find an answer to your question, or select your request type from the categories provided.