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In the Juniper Apstra Ul. which three resources are assigned under the Resources menu? (Choose three.)
VTEP pools
ASN pools
VNI pools
logical device pools
IP address pools
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:
The following two types of resources are not assigned under the Resources menu:
References:
Which two statements are correct about Time Voyager? {Choose two.)
Time Voyager retains all of the blueprint revisions from the last Juniper Apstra backup.
Time Voyager retains the five most recent blueprint commits.
Time Voyager retains the last ten blueprint commits.
Time Voyager retains up to twenty-five saved revisions.
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. References: Time Voyager | Apstra 4.1 | Juniper Networks, Time Voyager Introduction | Apstra 4.2 | Juniper Networks, Juniper Apstra at a Glance | Flyer
Exhibit.
Which two statements about ESI values are correct for the server connections to the fabric shown in the exhibit? (Choose two.)
A valid ESI value for Server A is 0x00.00.00.00.00.00.00.00.00.00.
A valid ESI value for Server B is 0x00.20.20.20.20.20.20.20.20.20.
A valid ESI value for Server A is 0x00.10.10.10.10.10.10.10.10.10.
A valid ESI value for Server B is 0x00.00.00.00.00.00.00.00.00.00.
To answer this question, we need to understand the concept of ESI values in EVPN LAGs. An ESI is a 10-byte value that identifies an Ethernet segment, which is a set of links that connect a multihomed device (such as a server) to one or more PE devices (such as leaf switches) in an EVPN network. The same ESI value must be configured on all the PE devices that connect to the same Ethernet segment. This allows the PE devices to form an EVPN LAG, which supports active-active or active-standby multihoming for the device. The ESI value can be manually configured (type 0) or automatically derived from LACP (type 1) or other methods. In the exhibit, Server A is connected to two leaf switches (QFX 5210) using a LAG with LACP enabled. Server B is connected to three leaf switches (QFX 5120) using a LAG with LACP enabled. Based on this information, the following statements are correct about ESI values for the server connections to the fabric:
Which two statements are correct about probes? (Choose two.)
Default probes can be cloned, modified, and saved.
Only the variable parameters tor default probes can be edited and saved.
All default probes are enabled for all blueprints.
Default probes are enabled, based on the intent for a blueprint.
Probes are the basic unit of abstraction in Intent-Based Analytics (IBA). They are used to collect, process, and analyze data from the network and raise anomalies based on specified conditions. Probes are composed of processors and stages that form a directed acyclic graph (DAG) of data flow. The following statements are correct about probes:
In the Juniper Apstra design phase, which object dictates port count, port speed, and how the ports would be used?
logical devices
rack type
network devices
interface map
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. For more information, see Interface Maps (Datacenter Design). References:
In the Juniper Apstra Ul. you are creating a VNI pool for virtual networks.
In this scenario, which VNI range is acceptable?
Any range is acceptable for the VNI pool.
The valid VNI range is 4096 through 16777214.
The valid VNI range is 2 through 4096.
The valid VNI range is 1 through 10000.
In the Juniper Apstra UI, you can create VNI pools for virtual networks that use VXLAN encapsulation in the overlay network. A VNI pool is a resource pool that contains a range of VNIs that can be assigned to the virtual networks. The valid VNI range for a VNI pool is 4096 through 16777214, according to the VXLAN standard1. Therefore, the statement B is correct in this scenario.
The following three statements are incorrect in this scenario:
References:
Exhibit.
Referring to the exhibit, what needs to change in the IP fabric to make it a valid IP fabric?
The IP fabric must consist of only one device model throughout the fabric.
The connection between the two spine nodes must be increased to 40 Gbps.
The IP fabric connections must be increased to a speed greater than 10 Gbps.
The connection between the two spine nodes must be removed.
To make the IP fabric a valid IP fabric, the connection between the two spine nodes must be removed. This is because an IP fabric is a network topology that uses a spine-leaf architecture, where the spine devices are only connected to the leaf devices, and the leaf devices are only connected to the spine devices. This creates a non-blocking, high-performance, and scalable network that supports Layer 3 routing protocols such as BGP or OSPF. The connection between the two spine nodes in the exhibit violates the spine-leaf design principle and introduces unnecessary complexity and potential loops in the network. The other options are incorrect because:
Using the Juniper Apstra multitenancy capabilities, which approach will allow a tenant to interconnect two different routing zones?
Interconnection is the default behavior.
Use interconnection through the fabric spine nodes.
Interconnection cannot be enabled.
Use interconnection through an external gateway.
According to the Juniper documentation1, a routing zone is an L3 domain, the unit of tenancy in multi-tenant networks. You create routing zones for tenants to isolate their IP traffic from one another, thus enabling tenants to re-use IP subnets. In addition to being in its own VRF, each routing zone can be assigned its own DHCP relay server and external system connections. You can create one or more virtual networks within a routing zone, which means a tenant can stretch its L2 applications across multiple racks within its routing zone. For virtual networks with Layer 3 SVI, the SVI is associated with a Virtual Routing and Forwarding (VRF) instance for each routing zone isolating the virtual network SVI from other virtual network SVIs in other routing zones. If you’re using multiple routing zones, external system connections must be from leaf switches in the fabric. Routing between routing zones must be accomplished with external systems. Therefore, the correct answer is D. Use interconnection through an external gateway. References: Routing Zones
Which two statements about VXLAN VNIs are correct? (Choose two.)
VNIs can have over 16 million unique values.
VNIs identify a collision domain.
VNIs identify a broadcast domain
VNIs are alphanumeric values.
VXLAN VNIs are virtual network identifiers that are used to identify and isolate Layer 2 segments in the overlay network. VXLAN VNIs have the following characteristics:
The following two statements are incorrect in this scenario:
References:
Which two actions are required during Juniper Apstra's deploy phase? (Choose two.)
Assign device profiles to the blueprint.
Assign user roles to the blueprint.
Assign interlace maps to the blueprint.
Assign resources to the blueprint.
The deploy phase is the final step in the Juniper Apstra data center fabric design and deployment process. In this phase, you apply the Apstra-rendered configuration to the devices and verify the intent of the blueprint. Based on the web search results, we can infer the following actions are required during the deploy phase12:
Exhibit.
Referring to the exhibit, how many broadcast domains will an Ethernet frame pass through when traversing the IP fabric from Server A to Server B?
1
4
2
3
Referring to the exhibit, the image shows a simplified diagram of an IP fabric network connecting two servers, labeled as Server A and Server B. The IP fabric is a network architecture that uses a Clos topology to provide high bandwidth, low latency, and scalability for data center networks. The IP fabric consists of spine and leaf devices that use BGP as the routing protocol and VXLAN as the overlay technology1.
A broadcast domain is a logical portion of a network where any device can directly transmit broadcast frames to other devices at the data link layer (OSI Layer 2). A broadcast frame is a frame that has a destination MAC address of all ones (FF:FF:FF:FF:FF:FF), which means that it is intended for all devices in the same broadcast domain. A broadcast domain is usually bounded by a router, which does not forward broadcast frames to other networks2.
In the exhibit, there are two broadcast domains that an Ethernet frame will pass through when traversing the IP fabric from Server A to Server B. The first broadcast domain is the one that contains Server A and the leaf device that it is connected to. The second broadcast domain is the one that contains Server B and the leaf device that it is connected to. The IP fabric itself is not a broadcast domain, because it uses IP routing and VXLAN encapsulation to transport the Ethernet frames over the Layer 3 network. Therefore, the statement C is correct in this scenario.
The following three statements are incorrect in this scenario:
References:
A member of your organization made changes to a predefined interface map using Juniper Apstra.
Which two statements are correct in this scenario? (Choose two.)
Changes to interface maps in the global catalog do not affect interface maps that have already been imported into blueprint catalogs
Any changes made to predefined interface maps are discarded when Apstra is upgraded.
Changes made to predefined interface maps will not have an impact on the Apstra software.
Changes to interface maps in the global catalog will raise anomalies that may need to be addressed at the next commit.
According to the Juniper documentation1, an interface map is a configuration template that maps interfaces between logical devices and physical hardware devices (represented with device profiles) while adhering to vendor specifications. An interface map can be either predefined or custom. A predefined interface map is one that ships with Apstra software and supports most qualified Juniper devices. A custom interface map is one that is created by the user to meet specific requirements. An interface map can be stored in either the global catalog or the blueprint catalog. The global catalog contains all the interface maps that are available for use in any blueprint. The blueprint catalog contains the interface maps that are imported from the global catalog and used in a specific blueprint.
When a member of your organization makes changes to a predefined interface map, the following statements are correct:
Therefore, the correct answer is A and B. Changes to interface maps in the global catalog do not affect interface maps that have already been imported into blueprint catalogs and any changes made to predefined interface maps are discarded when Apstra is upgraded. References: Edit Interface Map | Apstra 4.2 | Juniper Networks
Which three statements describe intent-based analytics? (Choose three.)
It indicates when device operating versions require updating.
It is a real-time information processing pipeline.
It is used to establish network performance baselines.
It alerts the network operator when network performance moves away from the baseline.
It collects information from vendor websites.
Intent-based analytics (IBA) is a feature of Juniper Apstra that allows you to combine intent from the network design with current and historic data from devices to reason about the network at-large1. IBA has the following characteristics:
The following two statements are incorrect in this scenario:
References:
When editing a device configuration to install some manual changes, which procedure should be followed?
Edit the configuration on the device directly by the CLI; the changes will automatically be adjusted in the Juniper Apstra configuration
Edit the pristine configuration of the device.
Add a persistent change to a device configuration with a configlet.
Delete the device from the Juniper Apstra system, change the configuration, then re-import the device.
A configlet is a small piece of configuration that can be applied to a device or a group of devices to make persistent changes that are not overwritten by Apstra. Configlets can be used to install manual changes that are not part of the Apstra rendered configuration, such as custom commands, scripts, or features. Configlets can be created, edited, and deleted from the Apstra GUI or CLI12. References:
TESTED 03 May 2024
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