I looked at the full package Full E-learning packages and all it says is:
This Cisco self-paced course is designed to be as effective as classroom training. Course content is presented in easily-consumable segments via both Instructor Video and text. Interactivity is enabled through Discovery labs, content review questions, and graded Challenge labs and tests.
So I would think its the same for the standalone lab packages. I used the NP labs a long time ago, and there was a "show me" button if you got stuck...don't know if they still have that, and whether it is there in both lab types.
Short answer: Challenge labs are graded, Discover labs are not.
Discovery labs are not graded, but they do have a "success criteria." As you progress through the lab steps you'll have to perform tasks... configure an IP address, bring up the interface, configure a password, etc. You'll know if you did those correctly if you applied the IP address and brought the interface up successfully (you can ping between routers), or if you set the password and were required to use it, etc.
Challenge labs are graded. There's a button to initialize the lab and again, you'll get a list of tasks. Your job is to complete the tasks, but this time there's a SUBMIT button that gives you green / red feedback on each task, red is incomplete or incorrect, green is "done." In a regular end-of-section challenge, you can click SUBMIT as many times as you want until all tasks are green.
You can see the difference for yourself in ICND2.
- Go to our CLN Store / ICND2 here - https://learningnetworkstore.cisco.com/on-demand-e-learning/interconnecting-cisco-networking-devices-part-2-icnd2-v3-0-e…
- Launch the Free Trial Version. We give away sections 1, 7, and 17
- In the table of contents on the left, click on Lab Listing
- Lab 1.6 is a discovery lab, lab 1.7 is a challenge lab
By the way, we also give away section 1, 2, 3, and 6 in ICND1 (link here)
The first two, 4.5 and 5.6 are both Discovery labs. Your first Challenge lab comes in the Challenge assessment ("challenge lab" in the end of section "challenge" ... we're not very creative ).
You'll notice a difference pretty quick.
If you have any questions feel free to post them, but there's also a certifications community you can access from here - Certifications
Next to Routing and Switching, click on CCENT or CCNA and you'll see green buttons that say "Join the .... Community". There are members and Cisco community managers who are pretty active in those communities.