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Data Center, Specialist Questions 11–15 (page: 4)

Updated On: 9-Feb-2026

You are receiving cable, interface, and BGP anomalies from several devices within the data center fabric. In Juniper Apstr

  1. how would you troubleshoot these types of errors?
  2. In the Ul, go to Time Voyager and revert to the last working version.
  3. In the Ul, access the console to the devices and review the interface states.
  4. In the Ul, go to Devices and confirm that agent connectivity is fine.
  5. In the Ul, verify device connectivity by consulting the cable map.

Answer(s): D

Explanation:

The cable map is a graphical representation of the physical connections between the devices in the data center fabric. It shows the status of the cables, interfaces, and BGP sessions for each device. You can use the cable map to identify and troubleshoot any cable, interface, or BGP anomalies that may occur in the fabric. You can also filter the cable map by device name, device type, device role, device state, cable state, interface state, or BGP state12.


Reference:

Cable Map Overview
Cable Map User Guide



Exhibit.



Referring to the exhibit, what is the minimum information you must add to create a new routing zone?

  1. VRF Name only
  2. VRF Name and Routing policies
  3. VRF Name, VLAN ID. And VNI
  4. VRF Name, VLAN ID, VNI, Routing Policies

Answer(s): C

Explanation:

To create a new routing zone, you must specify the VRF Name, VLAN ID, and VNI for the routing zone. These are the mandatory fields in the user interface shown in the exhibit. The VRF Name is the name of the L3 domain that isolates the IP traffic of the routing zone from other routing zones. The VLAN ID is the identifier for the VLAN tagged Layer 3 links on external connections. The VNI is the VxLAN

Network Identifier associated with the routing zone. The Routing Policies are optional fields that allow you to configure import and export route targets for the routing zone. These are only applicable for EVPN routing zones, which use MP-EBGP as the overlay control protocol. The other options are incorrect because:
A) VRF Name only is wrong because you also need to specify the VLAN ID and VNI for the routing zone.
B) VRF Name and Routing policies is wrong because you also need to specify the VLAN ID and VNI for the routing zone. Routing policies are optional and only relevant for EVPN routing zones. D) VRF Name, VLAN ID, VNI, Routing Policies is wrong because Routing Policies are optional and not required to create a new routing zone.


Reference:

Routing Zones (Virtual)
Data Center Automation Using Juniper Apstra



Which two statements are correct about Time Voyager? {Choose two.)

  1. Time Voyager retains all of the blueprint revisions from the last Juniper Apstra backup.
  2. Time Voyager retains the five most recent blueprint commits.
  3. Time Voyager retains the last ten blueprint commits.
  4. Time Voyager retains up to twenty-five saved revisions.

Answer(s): B,D

Explanation:

Time Voyager is a feature of Juniper Apstra that allows you to restore previous revisions of a blueprint, which is a logical representation of your network design and configuration. Time Voyager automatically saves the five most recent blueprint commits, which are the changes that you apply to the network. You can also manually save up to twenty-five revisions by keeping them, which prevents them from being overwritten by new commits. Therefore, the correct answer is B and D. Time Voyager retains the five most recent blueprint commits and Time Voyager retains up to twenty- five saved revisions.


Reference:

Time Voyager | Apstra 4.1 | Juniper Networks, Time Voyager Introduction | Apstra 4.2 | Juniper Networks, Juniper Apstra at a Glance | Flyer



In the Juniper Apstra Ul. which three resources are assigned under the Resources menu? (Choose three.)

  1. VTEP pools
  2. ASN pools
  3. VNI pools
  4. logical device pools
  5. IP address pools

Answer(s): B,C,E

Explanation:

In the Juniper Apstra UI, the Resources menu allows you to create and manage global and local resources that are used for various elements of the network design and configuration. The Resources menu includes the following three types of resources that can be assigned to the network devices and virtual networks:
ASN pools: These are pools of autonomous system numbers (ASNs) that are used for the underlay routing protocol (EBGP) between the leaf and spine devices. You can create ASN pools with either 2- byte or 4-byte ASNs, and assign them to the logical devices in the blueprint. VNI pools: These are pools of virtual network identifiers (VNIs) that are used for the overlay network (VXLAN) between the end hosts. You can create VNI pools with a range of VNIs, and assign them to the virtual networks in the blueprint.
IP address pools: These are pools of IPv4 or IPv6 addresses that are used for various purposes in the network, such as the loopback addresses for the devices, the IP prefixes for the virtual networks, the host IP addresses for the end hosts, and the gateway IP addresses for the IRB interfaces. You can create IP address pools with a range of IP addresses, and assign them to the logical devices and virtual networks in the blueprint.
The following two types of resources are not assigned under the Resources menu:
VTEP pools: These are not resources that can be created or assigned by the user. VTEPs are VXLAN tunnel endpoints that are automatically generated by the Apstra server based on the loopback IP addresses of the devices. VTEPs are used as the source and destination IP addresses for the VXLAN tunnels in the overlay network.
Logical device pools: These are not resources that can be created or assigned by the user. Logical device pools are groups of logical devices that share the same role, interface map, and resource assignments in the blueprint. Logical device pools are used to simplify the network design and configuration by applying the same settings to multiple devices.


Reference:

Resources Introduction
ASN Pools (Resources)
VNI Pools (Resources)
IP Address Pools (Resources)



In Juniper Apstr

  1. which three modes are available for devices? (Choose three.)
  2. Deploy
  3. Active
  4. Stopped
  5. Drain
  6. Ready

Answer(s): A,D,E

Explanation:

Juniper Apstra supports three deploy modes for devices: Deploy, Drain, and Ready. These modes determine the configuration and state of the devices in the data center fabric12. Deploy: This mode applies the full Apstra-rendered configuration to the device, according to the Apstra Reference Design. The device state becomes IS-ACTIVE and the device is ready to carry traffic in the fabric12.

Drain: This mode adds a "drain" configuration to the device, which prevents any new traffic from entering the device. The device state becomes IS-READY and the device is prepared for maintenance or decommissioning12.
Ready: This mode removes the Apstra-rendered configuration from the device, leaving only the basic configuration such as device hostname, interface descriptions, and port speed/breakout. The device state becomes IS-READY and the device is not part of the fabric12.


Reference:

Device Configuration Lifecycle
Set Deploy Mode (Datacenter)



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