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97. Frage
You have created a blueprint and are in the process of assigning systems. You require the leaf3-sonic device in the blueprint but do not want it to actively participate in the routing of the IP fabric.
In the Juniper Apstra UI, which two modes satisfy this requirement? (Choose two.)
Antwort: C,D
Begründung:
Apstra deploy modes control how far a device progresses in the configuration lifecycle and whether it becomes active in the fabric. If you must keep leaf3-sonic present in the blueprint (modeled, cabled, and available for future use) but you do not want it to participate in IP-fabric routing, you use modes that keep the device not active.
Ready mode assigns the device to the blueprint and applies only "Ready (Discovery 2)" level configuration-hostnames, interface descriptions, and port speed/breakout settings-while explicitly keeping the device out of fabric routing. In this mode, Apstra does not configure routing/BGP or L3 interface addressing for the IP fabric, so the switch is staged and visible for validation (for example, LLDP wiring checks) but does not forward as part of the Clos underlay.
Undeploy mode removes the complete Apstra service configuration from the device. Operationally, this also ensures the device is not active in the fabric. It is commonly used when a device must be retained in the blueprint inventory/topology but should not be participating (for example, temporarily withdrawn, decommission preparation, or held as a spare).
By contrast, Deploy makes the device active (full rendered fabric configuration, including BGP), and Drain is a maintenance state used to gracefully remove traffic from an already-active device rather than a state for keeping it non-participatory from the outset.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra6.0/apstra-user-guide/topics/topic-map/device-config-lifecycle.html
https://www.juniper.net/documentation/us/en/software/apstra4.2/apstra-user-guide/topics/topic-map/device-config-lifecycle.html
98. Frage
You have a configuration deviation in the Juniper Apstra dashboard.
What does this anomaly indicate in this scenario?
Antwort: B
Begründung:
A configuration deviation anomaly in the Juniper Apstra dashboard indicates that the running configuration on a device does not match the intended configuration (golden config) maintained by Apstra. This typically occurs when someone makes changes directly on the device using CLI or another management tool, bypassing Apstra's intent-based control.
99. Frage
You want to gracefully take a device out of service to perform an OS upgrade. How would you accomplish this task using Juniper Apstra?
Antwort: A
Begründung:
In Apstra 5.1, the correct operational method to gracefully remove a switch from service for maintenance is to set its Deploy Mode to Drain. Drain is a day-2 operational control that tells Apstra to adjust intent so the fabric can continue operating while the targeted device is logically taken out of service as much as the design allows. This is especially relevant in EVPN-VXLAN leaf-spine fabrics where taking down a spine or a leaf can disrupt underlay BGP adjacencies and overlay reachability if traffic is not shifted first.
This action is performed from the blueprint's Active view because Drain affects the currently deployed, running fabric state (not a staged design change). Selecting the device under Active and changing Deploy Mode to Drain initiates the workflow that prepares the device for maintenance by reducing its role in forwarding and/or withdrawing dependent services according to the blueprint's modeled redundancy (for example, shifting server-facing traffic to an MLAG/ESI peer where applicable, or reducing reliance on the device for transit). After the device is drained, an OS upgrade can be performed with less impact, and the device can later be returned to service by switching Deploy Mode back to Deploy and committing the change.
The "Upgrade" action is not the deploy-mode mechanism described for graceful removal; the key is Deploy Mode → Drain from Active, which is explicitly intended for maintenance and decommissioning scenarios.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/task/device-drain.html
https://www.juniper.net/documentation/us/en/software/apstra4.2/apstra-drain-mode/apstra-drain-mode-guide/topics/concept/apstra-drain-mode-activate-or-disable-drain.html
100. Frage
In the Juniper Apstra design phase, which object dictates port count, port speed, and how the ports would be used?
Antwort: A
Begründung:
Interface maps are objects that map interfaces between logical devices and physical hardware devices in the Juniper Apstra design phase. They dictate port count, port speed, and how the ports would be used for achieving the intended network configuration rendering. Interface maps also allow you to select device ports, transformations, and interfaces, provision breakout ports, and disable unused ports.
101. Frage
Referring to the exhibit, when you create the virtual network, which another component is automatically created by Juniper Apstra?
Antwort: D
Begründung:
As shown in the exhibit, the "Create Connectivity Templates for" option is checked (for Untagged), which means Juniper Apstra will automatically generate a connectivity template along with the creation of the virtual network. This template allows the new virtual network to be easily applied to interfaces across the fabric.
102. Frage
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