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Deanna
Community Manager
Community Manager
  • 489K Views

Questions about getting ready for your Red Hat remote exam?

This thread is dedicated to connect you with Red Hat subject matter experts who can help answer your questions regarding Red Hat remote exams. Please see the following resources for Red Hat Remote Exams below:

For questions on scheduling or redeeming your exams,  please use the Red Hat Certification team comment form here. 

**Our subject matters experts in the Red Hat Learning Community will not be assisting with tasks related to scheduling exams. 

Deanna L
--
Deanna
Labels (3)
1,431 Replies
Fran_Garcia
Starfighter Starfighter
Starfighter
  • 3,673 Views

Generally speaking, support for Linux  (not just Red Hat Enterprise Linux or Fedora, it's all distributions) has been poor because Apple is not releasing documentation or specifications of their hardware, so drivers cannot be built or tested openly by the community.

Without direct involvement from Apple it will be very difficult to have full support of such models. The recommendation is stands, if possible use some laptop vendor whose hardware is certified or at least known to work.

Gineesh
Flight Engineer
Flight Engineer
  • 3,663 Views

@Fran_Garcia, yeah agree on that point.

But it became like the student needed to buy an external camera (wired +
mouse + keyboard etc) and a laptop to attend the exam :)

I am just kidding. But I heard this concern from many other friends in the
community.
We will see how; hopefully exam centers will be able to open soon with
strict measures and whoever cannot arrange remote exams, can still use the
centers :)


*Gineesh*
linkedin.com/in/gineesh
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JS_Learning
Starfighter Starfighter
Starfighter
  • 3,835 Views

Hi @mbessa and @garylinker ,

Unfortunately the problem is not with Red Hat!

 

See the official getting ready guide, from page 18:

https://www.redhat.com/rhdc/managed-files/tr-remote-exams-preparation-ebook-f27382-202103-en_1.pdf 

 

Extract:

Important: 2018 and later series of Mac systems have been found to have compatibility
issues with several Linux® distributions. These issues impact the remote exam image as well.


The issues include, but are not limited to:


Î T2 security system prevents booting from an external device by default.


Î 2019 Macbook Pro keyboard and touchpad doesn’t work when booted from an external media.


Î Other internal components such as webcam, mic, and wifi adapters are not detected by many Linux distributions.
If your system encounters such issues, please use another laptop that meets the system requirements and passes the compatibility test

 

I made my own research on the internet out of curiosity, and unfortunately it's more on the side of Apple's not sharing the source code of their new hardware (that T2 chip thing): as a result many developers can not make some features work.

Unfortunately the T2 chip, is a secure thing, so it's very unlikely that Apple would release any source code.

In fact I even read there are some flaw with that chip:

https://www.wired.com/story/apple-t2-chip-unfixable-flaw-jailbreak-mac/ 

 

There's also some opensource project, where some individual contributors are trying to make that T2 work with Linux:

https://wiki.t2linux.org/state/ 

 

Bottom Line:

Apple released recent macbook models with some new hardware component providing among other things, security features. The source code is not made available, which impacts the entire opensource community and in particular makes things hard to have Linux Support.

I do not work with the team doing the Remote Exam environment. That team within Red Hat is very secure, and we can understand that they act as a blackbox not to reveal any secret to ensure the exam integrity (like encryption, anti cheats...anything that would/could give unfair advantage to any candidate).

Saying that, I highly doubt that any recent macbook will be supported anytime soon by the Remote Exam environment. Based on my interpretation of the Linux for T2 state page shared earlier, I even doubt anything would be completed before many months/year(s).

I would suggest what was in the preparation guide, try to use another laptop. Even borrow some to a friend of you can, booting from the live USB exam does not interfere with the installed OS!

Feel free also to bring that with Apple, maybe they will listen to your feedback? After all, you purchased a specific hardware, I would be interested to see Apple's official answer on them preventing you to use that hardware as you want...

Hope that clarifies the situation!

 

 

 

 

mbessa
Mission Specialist
Mission Specialist
  • 3,840 Views

Hey @JS_Learning,

Thank you a lot for the thourought explaination!!! 

In the meantime I've researched a little more and even tried other distros but without success. Looks like redhat or linux in modern Apple hardware will be a mirage in the near future. :(

Anyway, Thank you again! 

Best Regards!

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Juansebasrodrig
Flight Engineer Flight Engineer
Flight Engineer
  • 2,332 Views

Hello,

Any news about supporting Apple Silicon Macbooks?

 

Thank you!

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PetrCihlar
Moderator
Moderator
  • 2,281 Views

M1/M2 Silicon CPU has ARM architecture. Only x86 is supported

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SujeethPakala
Mission Specialist
Mission Specialist
  • 2,253 Views

Hey, following our conversation this morning, i have tested old iso image on Macbook pro late 2013 model. I was able to bootup from the external flash drive but within the lab environment, it failed to detect the wifi signals, looks like the wifi driver/adapter was not in action to connect to a specific wifi signal. At the end, I have to postpone the exam.

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SujeethPakala
Mission Specialist
Mission Specialist
  • 2,129 Views

such an crazy piece of TIHS is this iso from Redhat. After trying this THIS iso image on 3 diferent variants of Apple Macbook pros, finally decided to buy Microsoft Surface studio laptop (I have plans on it, but now for sake or exam, i have prioritized to buy it). 

Took 1 hour to figure it outto dsiable security sttingsot make the laopt boot from USB disc & at the env, it disabled all peripherals of laptop, no sound, no mic, no touch pad. Basically, it blocks to do any thing you want to. 

Understood from the training provider that only EX188 (on open shift track) is the exam conduted virtually & most of the others can be given at test center. 

 

What the Heck about this exam ? why not to standardize the exam format with viable technical options ???

I wonder, what would be the life of engineers who are working on the Redhat products.. 

 

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Rilindo
Flight Engineer
Flight Engineer
  • 2,195 Views

> Understood from the training provider that only EX188 (on open shift track) is the exam conduted virtually & most of the others must be given at test center. 

Most exams can be done remotely. I don't know why your training provider would say that unless either certain exams can't be taken in specific countries or they are trying to get you to take your exam in their location.

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PetrCihlar
Moderator
Moderator
  • 2,232 Views

Red Hat management decided long ago not to run the certification exams in the Internet Browsers (like many other companies did), but to use a customized Fedora Live USB system, probably in an effort to protect the Exam"s integrity.

Of course, this decision also brings challenges. You hardly find a Linux distribution booting on any computer ever made worldwide. If you do, let me know about it.

Buying a new computer for the exam is the worst thing you can do unless you consult with the vendor about its compatibility with Fedora 33 the exam ISO is based on and unless you test it before you buy. As you might know, every computer hardware needs drivers and modules. Unlike RedHat, the producers do not publish their computer specifications and architecture details in advance. RedHat is buying those new computers in order to test their compatibility. But anyone can join the RH community and participate in creating the drivers to make it compatible. Did you participate?

Some marginal hardware configurations, gaming computers, new technologies, or models are usually not supported or not supported fully. It is generally known building drivers and integrating them into any Linux distro may take up to 3 years. What is the chance the new Microsoft laptop/tablet with its outstanding features will be supported by several years old version of exam Fedora?

I do not think RH engineers are failing. Thousands of users were able to take the exam, many are taking the exam every day. They had or found a compatible computer to use. And those who did not can still take the exam from the classroom.

Because it is quite understandable, the exam system cannot run on everything, unfortunately.

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