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Scenario: A Citrix Architect designed an active-passive Citrix Virtual Apps and Desktops environment, where the passive data center serves as the disaster recovery (DR) data center for all users.
Twelve items have been configured:
Citrix ADC Global Server Load Balancing (GSLB) to provide single URL direction to the active data center.
GSLB has health monitors configured for the load balanced servers.
Citrix Gateways are on both data centers.
Citrix ADC load balancing occurs for StoreFront and Delivery Controller XML services.
A single Citrix Virtual Apps and Desktops Site exists.
Four Delivery Controllers are members of the Site.
Two Delivery Controllers are members of the Primary Zone in the active data center.
Two Delivery Controllers are members of the Satellite Zone in the passive data center.
SQL is deployed in the active data center.
Local Host Cache is enabled.
Two StoreFront servers are deployed in each data center aggregating resources from the Delivery Controllers in the respective data center.
Virtual Delivery Agent (VDA) machines are deployed in both data centers and configured to register with Delivery Controllers in their zone.
What would happen if the Delivery Controllers in the primary data center were turned off?
Suggested Answer: B
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38 comments · newest first
DE
Deeanna
11 months ago
D is definitely correct, GSLB is designed for failover!
TI
Tish
12 months ago
A sounds plausible, but it wouldn't work without the primary controllers.
CR
Cristina
12 months ago
Wait, are we sure GSLB can detect the controllers being down?
HO
Hoa
1 year ago
I agree, D is the right choice here.
ED
Eden
1 year ago
GSLB should redirect to the passive data center if the primary is down.
WY
Wynell
1 year ago
I'm a bit confused about StoreFront's role in this scenario. Would it still function if the primary controllers are down?
LI
Lilli
1 year ago
I practiced a similar question where GSLB redirected traffic based on health checks. I hope that applies here too.
DY
Dyan
1 year ago
I think if the primary Delivery Controllers are off, the VDAs should still be able to register with the ones in the passive data center, right?
RE
Renato
1 year ago
I remember something about how GSLB works, but I'm not entirely sure if it can detect the Delivery Controllers being down.
LA
Lakeesha
1 year ago
This one seems pretty straightforward. I think the two metrics we can track to calculate the value of RTCDP are Time-to-market and CPA.
BA
Barabara
1 year ago
This question seems straightforward, but I want to make sure I understand the details before answering.
DA
Darrin
1 year ago
Hmm, I'm a bit unsure about this one. I know cash basis means reporting income when it's actually received, but I'm not sure about the details on constructive receipt.
CO
Colette
1 year ago
Okay, I think I've got this. The key is to make sure I select the right currency for the US dollar. As long as I do that, the rest should be pretty straightforward.
SH
Sheridan
1 year ago
Wait, so we're supposed to believe that the Citrix Architect actually set everything up correctly? I'm calling shenanigans on this one!
GA
Galen
1 year ago
I agree, the GSLB will redirect connections to the secondary data center if the primary Delivery Controllers are turned off.
HA
Harris
1 year ago
Yeah, everything seems to be configured properly for failover.
EL
Elly
1 year ago
I think the architect did a good job setting up the environment.
DI
Dierdre
1 year ago
Oof, this one's a tough call. I'm gonna have to go with C, but I'm keeping my fingers crossed. Citrix likes to keep us on our toes, that's for sure!
LU
Luisa
1 year ago
GSLB will start redirecting connections to the secondary data center, as GSLB is aware the controllers are down.
FR
France
1 year ago
C) GSLB will start redirecting connections to the secondary data center.
JU
Jules
1 year ago
B) StoreFront in the primary data center would still be able to launch sessions.
RO
Rolf
1 year ago
A) VDA machines from the primary data center would register with the Delivery Controllers in the passive data center.
BE
Bettyann
1 year ago
That's good to know. Citrix really has a robust failover system in place.
CE
Celestina
1 year ago
If the primary data center goes down, GSLB will redirect connections to the secondary data center.
RY
Ryan
1 year ago
Yeah, I agree. Citrix can be unpredictable sometimes.
YU
Yuriko
1 year ago
I think C is the right answer. Citrix always has some surprises up its sleeve.
BA
Barney
2 years ago
Haha, these Citrix architects really like to throw us a curveball, don't they? I'm going with C - GSLB redirection. It just makes sense that the DR site would take over when the primary goes down.
RU
Rueben
2 years ago
Hmm, I'm not so sure about that. I'm leaning towards D - GSLB won't identify that the Delivery Controllers are down, so sessions can't launch. Gotta keep an eye on that GSLB health monitoring, you know?
AH
Ahmed
1 year ago
D) GSLB will NOT identify that the Delivery Controllers are down and sessions CANNOT launch.
PA
Page
1 year ago
A) VDA machines from the primary data center would register with the Delivery Controllers in the passive data center.
RO
Ronald
2 years ago
But what about the GSLB? Would it start redirecting connections to the secondary data center?
DA
Daniel
2 years ago
Oh man, this one's tricky! I'm gonna go with C - GSLB will start redirecting connections to the secondary data center. Seems like the most logical choice since the primary data center's Delivery Controllers are down.
GI
Gilma
1 year ago
B) StoreFront in the primary data center would still be able to launch sessions.
JO
Joseph
1 year ago
D) GSLB will NOT identify that the Delivery Controllers are down and sessions CANNOT launch.
RE
Reita
1 year ago
A) VDA machines from the primary data center would register with the Delivery Controllers in the passive data center.
WI
Wilbert
1 year ago
C) GSLB will start redirecting connections to the secondary data center.
TH
Therese
2 years ago
I agree with you, Justine. That's what would happen according to the configuration described.
JU
Justine
2 years ago
I think if the Delivery Controllers in the primary data center were turned off, the VDA machines would register with the passive data center.