Important Instructions: CHFD

Exam Details

  • The exams are delivered online and consist of performance-based tasks (problems) to be solved with a web IDE and the command line.

  • The exams consist of between 16-20 performance-based tasks.

  • Candidates have 2 hours to complete the exam.

  • The exams are proctored remotely via streaming audio, video, and screen sharing feeds.

  • Results will be emailed 36 hours from the time that the exam is completed.

System Requirements to take the exam

Exams are delivered online and Candidates must provide their own computer with:

  • Current version of Chrome or Chromium

    • you don’t need to install a virtual machine, use a client machine, or anything beyond a Chrome or Chromium browser.

    • Make sure you have third party cookies turned on for the duration of the exam.

  • 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 the proctor may ask you to pan your surroundings to check for potential violations of exam policy.

    • Try holding up your ID while viewing your webcam feed to ensure your placement and resolution are sufficient for the person viewing your feed to read your ID.

    • 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 should run the ​compatibility check too​l to verify that their hardware meets the minimum​ requirements.

Acceptable Testing Location

Below are the expectations for an acceptable testing location:

  • 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.

Please see the Linux Foundation Certification Exams: Candidate Handboo​k for additional information covering policies, procedures and rules​ during the exam.

ID Requirements to take the Exam

  • Candidates are required to provide a non-expired Primary ID that contains Candidate’s photograph, signature and full name (see acceptable forms of ID in the table below)

  • The name on your Primary ID must exactly match the verified name on your exam checklist.

  • If the Candidate’s full name on their Primary ID contains non-latin characters, then the Candidate must ALSO provide a non-expired Secondary ID containing their full name in Latin Characters and signature, OR a notarized English translation of their Primary ID along with the non-latin character Primary ID

Primary ID

(non-expired and including photograph and signature)

Secondary ID

(non-expired and including signature with

Candidate name in Latin characters)

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​

住民基本台帳 (Basic resident register with Photo) or マイナンバーカード(My number card)

Debit (ATM) Card

Credit Card

Health Insurance Card

U.S. Social Security Card

Employee ID Card

Student ID Card

Japanese Health Insurance Card

Additional Allowances:

  • Some government issued ID such as a passport, driver’s license, military ID or state/country card may be a biometric type and may or may not contain a signature. In these cases Primary ID will be accepted without a signature on condition that you also present a Secondary ID which does contain your signature (e.g. bank, credit or debit card)

  • For candidates testing in Japan, a Driver’s License (with name and recent recognizable photo) is acceptable as a primary ID as long as it is accompanied with a Japanese health insurance card (健康保険証). In Japan, the Japanese health insurance card (健康保険証) is an acceptable form of secondary ID

  • 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 trainingsupport.linuxfoundation.org, 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

  • Sudan

  • North Korea

  • Crimea Region of Ukraine

Resources Allowed During the CHFD Exam

Candidate may use their browser to open one additional tab to access technical documentation related to Hyperledger Fabric or Node.js / JavaScript like

No other tabs may be opened, and note that the following sites are explicitly prohibited and accessing these sites will lead to immediate termination of the exam without warning:

  • Stack Overflow (stackoverflow.com)

  • Stack Exchange (stackexchange.com)

  • Server Fault (serverfault.com)

  • Super User (superuser.com)

Other similar discussion forum sites may also lead to immediate termination of the exam.

Please see the Candidate Handbook for additional information covering policies, procedures and rules during the exam.

Answers to CHFD Frequently Asked Questions (FAQ) can be found here.

CHFD Environment
Web IDE
CHFD Environment
  • Every task runs in its own (Linux) context. Contexts are similar to virtual machines.

  • Every context has its own separate Docker engine/Fabric network as well as its own copy of the Fabric Samples repository.

    • Changes made to one task's Fabric network are not visible in other tasks and vice-versa!

    • Changes made to one task's Fabric Samples are not available in other tasks and vice-versa!

  • When switching between tasks, the Web IDE will switch context with the task and automatically open the task's Fabric Samples. Please allow the web IDE some seconds to complete the switch.

  • When using the web IDE's integrated terminal, the shell will start in the task's context, ready to interact with the task's Fabric network.

  • The task's Fabric Samples are located at /fabric-samples

  • The exam is based on Hyperledger Fabric v2.2

  • The Hyperledger Fabric SDK for Node.js runs on Node.js v12.

Web IDE
  • Every tasks needs to be completed in the provided web IDE

  • The provided web IDE is a web version of VSCode

    • Not all VSCode features are available in the web version! All features you need to complete the tasks are provided

    • Your keyboard layout should be automatically detected, but should that not be the case there is a keyboard layout selector at the bottom right of the web IDE’s status bar