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Scenario: A Citrix Administrator manages an environment that has a Citrix ADC high availability (HA) pair running on two MPX appliances. The administrator notices that the state of the secondary Citrix ADC is 'Unknown'.
What is causing the secondary state to be 'Unknown'?
Suggested Answer: B, C
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Forcing the node to stay secondary works on both standalone and secondary nodes. On a standalone node, you must use this option before you can add a node to create an HA pair. When you add the new node, the existing node stops processing traffic and becomes the secondary node. The new node becomes the primary node.
On a standalone node, you must use this option before you can add a node to create an HA pair. When you add the new node, the existing node continues to function as the primary node, and the new node becomes the secondary node.
38 comments · newest first
SH
Shayne
11 months ago
Wait, how can the state be 'Unknown'? That sounds serious!
DA
Dannie
11 months ago
D could be it too, RPC misconfigurations happen.
RE
Ressie
12 months ago
C seems unlikely, you can't have two primaries.
DA
Dalene
12 months ago
Definitely B, if TCP port 22 is down, they can't communicate.
LE
Leonor
1 year ago
I think it's option A, synchronization issues are common.
MO
Mose
1 year ago
I vaguely recall something about RPC configurations being crucial for HA setups. Could option D be the culprit here?
EL
Elfriede
1 year ago
I'm not entirely sure, but I feel like making both ADCs primary would definitely cause confusion. So maybe option C?
FR
Francis
1 year ago
I think I saw a practice question where TCP ports were involved. Is it possible that option B is the right answer?
AR
Aracelis
1 year ago
I remember something about synchronization issues causing the secondary to show as 'Unknown'. Could it be option A?
TA
Tamra
1 year ago
Ah, this is a good one. I've worked with Citrix ADC HA before, so I think I have a decent handle on the potential problems that could arise. I'll methodically go through the options and choose the most plausible explanation.
QU
Quiana
1 year ago
Okay, let's see. The key here is to identify what could be causing the synchronization issue between the primary and secondary ADCs. I'll carefully analyze each choice to determine the most likely culprit.
AV
Avery
1 year ago
Hmm, the 'Unknown' state on the secondary ADC is definitely concerning. I'll need to carefully consider each option and make sure I understand the implications before selecting an answer.
CO
Cordie
1 year ago
This seems like a straightforward Citrix ADC high availability question. I'll start by reviewing the possible causes and thinking through each one logically.
CH
Chantell
1 year ago
I'm pretty sure the answer is Dendrites, since that's the term used for the branching extensions of a neuron that receive signals from other neurons.
MA
Man
1 year ago
Hmm, vicarious liability means the company could be responsible for the doctor's actions. I think option D looks strongest - clearly stating he's independent in documentation.
LE
Lennie
1 year ago
Hmm, I'm a bit confused by the composite dispersion calculation. I'll need to double-check the GIPS requirements on that.
KE
Kerry
1 year ago
I think brittle fractures happen suddenly, but I'm not sure if that means they grow rapidly, like option C says.
CA
Carma
1 year ago
Haha, I bet the administrator is kicking themselves for this one. It's like they hit the 'self-destruct' button on their Citrix ADC setup. Gotta love those 'Unknown' states!
SH
Sherita
1 year ago
D) The remote procedure call (RPC) nodes are incorrectly configured.
KI
Kimbery
1 year ago
C) The administrator made both Citrix ADCs primary.
EL
Elke
1 year ago
B) TCP port 22 is disabled between the primary and secondary ADCs.
CE
Cecil
1 year ago
A) The synchronization on the secondary appliance is disabled.
FR
Francoise
1 year ago
A is my pick. If the synchronization is disabled on the secondary, it's no wonder it's in an 'Unknown' state. It's like trying to play a game of chess without both players moving their pieces.
EM
Emilio
1 year ago
Wow, C is a really interesting option. Imagine the administrator making both ADCs primary - that would be like trying to have two captains on the same ship. What a mess that would be!
EV
Evan
1 year ago
D) The remote procedure call (RPC) nodes are incorrectly configured.
GA
Garry
1 year ago
B) TCP port 22 is disabled between the primary and secondary ADCs.
SV
Svetlana
1 year ago
A) The synchronization on the secondary appliance is disabled.
DA
Dacia
2 years ago
I'm gonna have to go with D on this one. The RPC nodes are the backbone of the Citrix ADC HA communication, and if they're misconfigured, it would definitely leave the secondary in an 'Unknown' state.
LE
Leoma
1 year ago
I'm not sure, but I think B could also be a possibility. If TCP port 22 is disabled between the primary and secondary ADCs, that could lead to the secondary state being 'Unknown'.
LE
Lemuel
1 year ago
I disagree, I believe it's D. The RPC nodes being incorrectly configured would definitely cause this issue.
GL
Glenn
1 year ago
I think it might be A. If the synchronization is disabled on the secondary appliance, that could cause it to be in an 'Unknown' state.
LA
Lashon
2 years ago
Hmm, my money is on B. If the TCP port 22 is disabled, how can the primary and secondary ADCs communicate and synchronize their state? Seems like a no-brainer to me.
TR
Trinidad
1 year ago
User 3: Agreed, enabling TCP port 22 should fix the 'Unknown' state.
GR
Graham
1 year ago
User 2: Yeah, that would make sense. They need that port to communicate.
LA
Lashandra
1 year ago
User 1: I think the issue is with TCP port 22 being disabled.
PE
Peggie
2 years ago
But wouldn't that affect the communication between the ADCs? I still think it's the synchronization being disabled.
DE
Delisa
2 years ago
I disagree, I believe it's because the TCP port 22 is disabled between the primary and secondary ADCs.
PE
Peggie
2 years ago
I think the secondary state is 'Unknown' because the synchronization on the secondary appliance is disabled.