Correct A&C ..The POAP feature does not require a license and is enabled by default. However for the POAP feature to function, appropriate licenses must be installed on the devices in the network before the deployment of the network
"...appropriate licenses must be installed on the devices in the network before the deployment of the network." means that there should be a license on the TFTP server, which it can download during the POAP process. Thus the answer is A&B.
Default POAP script executed by the switch: https://github.com/datacenter/nexus9000/blob/master/nx-os/poap/poap.py
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/fundamentals/configuration/guide/b_Cisco_Nexus_9000_Series_NX-OS_Fundamentals_Configuration_Guide_7x/b_Cisco_Nexus_9000_Series_NX-OS_Fundamentals_Configuration_Guide_7x_chapter_0100.html#concept_88533D1764C843189A825D54B9FA9E7D
C is Correct: The POAP feature does not require a license and is enabled by default. However for the POAP feature to function, appropriate licenses must be installed on the devices in the network before the deployment of the network.
E is also Correct : The switch software image must support POAP for this feature to function.
A cant be an answer becuase thats why Switch Goes to POAP
"When a device with the POAP feature boots and does not find the startup configuration, the device enters POAP mode, locates a DHCP server...(output omitted)
and B doesnt make any sense.
and i havent found anything on D
So Correct ans is C & E
The question asks us to verify the conditions that need to be true for POAP mode. A) is needed otherwise as you mentioned, it would just boot up. If you check the default POAP script shared by Cisco, it will check for licenses thus it can't be a prerequirement, and also the flow diagram doesn't include a check for licenses. Thus only A and B makes sense.
Flow diagram for POAP process:
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/fundamentals/configuration/guide/b_Cisco_Nexus_9000_Series_NX-OS_Fundamentals_Configuration_Guide_7x/b_Cisco_Nexus_9000_Series_NX-OS_Fundamentals_Configuration_Guide_7x_chapter_0100.html#concept_25E2C6A62EF64DB6B919E6729541F71C
If the question is "Which two conditions should be checked if a Cisco Nexus switch with POAP enabled does not enter POAP mode? (Choose two.)" - Then I choose A and E
If we will look on that question like
It need to be verified if:
A. No startup configuration is available. - Yes it need to be verified, because if we have configuration available on Switch then there is no need to RUN POAP, so NO POAP.
B. The switch is in bootup process. - Yes it need to be verified, because if yes then we have a problem with start POAP.
C. The license file is missing on the switch. - There is no license needed for POAP. POAP is enabled by default. The only licence which would be need is for example on TFTP server, but in that situation POAP will start but will not be able to download something (Soft or script)
D. Bootflash must contain a special directory named POAP with poap.py file. - No. Switch can be compleatly clean and POAP should RUN.
E. No Cisco NX-OS image is present on the bootflash. - In this situation POAP should RUN and download NX-OS. This is for what POAP is made for.
For me A and B.
But who knows what someone from CISCO had in mind???
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/fundamentals/configuration/guide/b_Cisco_Nexus_9000_Series_NX-OS_Fundamentals_Configuration_Guide_7x/b_Cisco_Nexus_9000_Series_NX-OS_Fundamentals_Configuration_Guide_7x_chapter_0100.html
Reason C is: The POAP feature does not require a license and is enabled by default. However for the POAP feature to function, appropriate licenses must be installed on the devices in the network before the deployment of the network.
Reason E:
Power-Up Phase
When you powerup the device for the first time, it loads the software image that is installed at manufacturing and tries to find a configuration file from which to boot. When a configuration file is not found, POAP mode starts.
About PowerOn Auto Provisioning
PowerOn Auto Provisioning (POAP) automates the process of upgrading software images and installing configuration files on devices that are being deployed in the network for the first time.
When a device with the POAP feature boots and does not find the startup configuration, the device enters POAP mode, locates a DHCP server, and bootstraps itself with its interface IP address, gateway, and DNS server IP addresses. The device also obtains the IP address of a TFTP server and downloads a configuration script that enables the switch to download and install the appropriate software image and configuration file.
When you powerup the device for the first time, it loads the software image that is installed at manufacturing and tries to find a configuration file from which to boot. When a configuration file is not found, POAP mode starts. Then POAP only works on startup so ensure it is booting.
Please read the question carefully it says "POAP-enabled Cisco nexus switch" which means this is possible only if there is a license and proper image on the switch. So ultimately option C. The license file is missing on the switch. & E. No Cisco NX-OS image is present on the bootflash. will not be any issue. Then the remaining option D.Bootflash must contain a special directory named POAP with poap.py file this is not applicable at all. So remaining two options A.No startup configuration is available. and B.The switch is in bootup process. are the options to be verified. So if there is a start up config available then no POAP. And if the switch is in bootup process it cannot get to next stage I guess. So the correct answer is A & G
It's B and C.
Not A - this is why we run POAP
Not D - there is no such thing as poap.py file
Not E - if there is no image on the bootflash, POAP will download a new image
This leaves us with B and C
the question is which conditions must be verified -
switch will enter POAP only when the startup file is missing, so we need to verify A so that switch enters POAP.
A and B looks right.
the question stated "A POAP-enabled Cisco Nexus switch will NOT enter POAP mode"
so the answer is how to make POAP enabled switch will not enter POAP mode"
POAP is skipped if startup is found. Hence POAP fails to continue so A is a cause for POAP not starting. When you powerup the device for the first time, it loads the software image that is installed at manufacturing and tries to find a configuration file from which to boot. When a configuration file is not found, POAP mode starts.
https://www.cisco.com/c/en/us/td/docs/dcn/nx-os/nexus3600/101x/configuration/fundamentals/cisco-nexus-3600-nx-os-fundamentals-configuration-guide-101x/m-using-poap.pdf
when no startup config is available poap works automatically but poap feature must be enable thus you should have poap licence.
B&C are the correct answers.
I think A & B are correct. Which conditions should be verified, so they need to be TRUE. Like no startup (A) and bootup (B). C means that it needs to miss a license file and E means it needs to miss an NX-OS image.
So it has to be A & B because they must be true. If you choose A & C as people say, it is contradictory because A is true and C must be false
BE
B does make sense: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/troubleshooting/guide/b_Cisco_Nexus_9000_Series_NX-OS_Troubleshooting_Guide_7x/b_Cisco_Nexus_9000_Series_NX-OS_Troubleshooting_Guide_7x_chapter_01100.html
"Switch Does Not Come Up in Time for POAP to Complete"
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