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| Certification Vendor: | Juniper |
|---|---|
| Exam Name: | Data Center, Specialist (JNCIS-DC) |
| Exam Number: | JN0-481 |
| Real Exam Qty: | 65 |
| Available Languages: | English |
| Certificate Validity Period: | 3 years |
| Exam Price: | $300 USD |
| Exam Duration: | 90 minutes |
| Exam Format: | Multiple Choice |
| Related Certifications: | JNCIA-DC JNCIS-DC |
| Sample Questions: | Juniper JN0-481 Sample Questions |
| Exam Way: | Pearson VUE online or test center delivery |
| Pre Condition: | JNCIA-DC certification is required before taking the JN0-481 exam. |
| Official Syllabus URL: | https://www.juniper.net/gb/en/training/certification/tracks/data-center/jncis-dc.html |
Juniper JN0-481試験参考書は権威的で、最も優秀な資料とみなされます。Juniper JN0-481試験参考書は研究、製造、販売とサービスに取り組んでいます。また、独自の研究チームと専門家を持っています。そのため、JN0-481試験参考書に対して、お客様の新たな要求に迅速に対応できます。それは受験者の中で、JN0-481試験参考書が人気がある原因です。
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質問 # 95
You want to route between tenants in a multitenant environment in Juniper Apstr a. What are two ways to accomplish this task? (Choose two.)
正解：B、C
解説：
In Apstra 5.1 multitenancy, tenants are modeled as routing zones, and each routing zone maps to a distinct VRF to provide strict Layer 3 isolation. Because each tenant's VRF is separate, "routing between tenants" is effectively inter-VRF routing. Apstra's routing-zone behavior emphasizes that inter-tenant routing is achieved via external systems: you connect each tenant/routing zone to an external router or firewall (often attached to border leafs), and that external device performs the policy-controlled inter-VRF routing between tenants. This approach is the most common because it centralizes security and compliance controls (stateful inspection, zone policies, NAT, logging) on the firewall/router while keeping the fabric clean and consistent.
A second method is to perform inter-VRF routing on a VTEP-capable border leaf that terminates the tenant VRFs. In EVPN-VXLAN designs, border leafs are frequently the demarcation where tenant VRFs connect to outside domains; when the same border leaf hosts multiple tenant VRFs and is designed to provide L3 services for them, it can act as the routing point between VRFs (subject to your design and security requirements). Junos v24.4 supports VRFs and policy constructs required for controlled route exchange and forwarding behavior, but Apstra's intent model still expects routing-zone isolation by default-so any inter-tenant connectivity should be explicitly designed and governed, typically at the border.
質問 # 96
Which attribute enables Juniper Apstra to scale and manage thousands of devices with a single server instance?
正解：B
解説：
The attribute that enables Juniper Apstra to scale and manage thousands of devices with a single server instance is that Apstra is a distributed state system. This means that Apstra uses a graph database to store the network topology and configuration data in a distributed and replicated manner across multiple server nodes. This allows Apstra to handle large-scale networks with high performance, reliability, and availability. Apstra also uses a stateful orchestration engine that ensures the network state is always consistent with the intent of the blueprint, which is the logical representation of the network design and behavior. Apstra can automatically detect and resolve any discrepancies between the desired and actual network state, as well as handle any changes or failures in the network.
質問 # 97
Which three statements describe intent-based analytics? (Choose three.)
正解：A、B、C
解説：
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- large.
IBA has the following characteristics:
It is a real-time information processing pipeline. This means that IBA can ingest, process, and analyze large amounts of data from devices in real time, using agents and probes.
Agents are software components that collect data from devices and send them to the Apstra server.
Probes are user-defined queries that aggregate data across devices and generate advanced data that can be more easily reasoned about.
It is used to establish network performance baselines. This means that IBA can use the advanced data to measure and monitor the network performance against the expected outcomes and service levels.
IBA can also use the historic data to create baselines that represent the normal behavior and state of the network.
It alerts the network operator when network performance moves away from the baseline. This means that IBA can detect and report any anomalies or deviations from the baseline or the intent in the network.
IBA can also provide insights and recommendations for troubleshooting and resolving the issues.
質問 # 98
Exhibit.
Referring to the exhibit, which role does Device A serve in an IP fabric?
正解：B
解説：
Device A serves as a spine in an IP fabric. An IP fabric is a network architecture that uses a spine-leaf topology to provide high performance, scalability, and reliability for data center networks. A spine-leaf topology consists of two layers of devices: spine devices and leaf devices. Spine devices are the core devices that interconnect all the leaf devices using equal-cost multipath (ECMP) routing. Leaf devices are the edge devices that connect to the servers, storage, or other network devices. In the exhibit, Device A is connected to four leaf devices using multiple links, which indicates that it is a spine device. The other options are incorrect because:
A . leaf is wrong because a leaf device is an edge device that connects to the servers, storage, or other network devices. In the exhibit, Device A is not connected to any servers, storage, or other network devices, but only to four leaf devices, which indicates that it is not a leaf device.
C . super spine is wrong because a super spine device is a higher-level device that interconnects multiple spine devices in a large-scale IP fabric. A super spine device is typically used when the number of leaf devices exceeds the port density of a single spine device. In the exhibit, Device A is not connected to any other spine devices, but only to four leaf devices, which indicates that it is not a super spine device.
D . server is wrong because a server device is a compute or storage device that connects to a leaf device in an IP fabric. A server device is typically the end host that provides or consumes data in the network. In the exhibit, Device A is not connected to any leaf devices, but only to four leaf devices, which indicates that it is not a server device. Reference:
IP Fabric Underlay Network Design and Implementation
IP Fabric Overview
IP Fabric Architecture
質問 # 99
The analytics probe shown in the exhibit is enabled. The ge-0/0/5 interface on the "my-esl-001- leaf1" node receives an average of greater than 1 Mbps of traffic.
Which two statements are correct in this scenario? (Choose two.)
正解：B、C
解説：
The probe is configured with a Range processor that raises an anomaly when the measured value (traffic utilization) exceeds the specified range. Since the interface exceeds 1 Mbps, a probe anomaly will be raised.
When a probe anomaly is raised, the Analytics tab indicator in the blueprint turns red to signal that an issue has been detected by intent-based analytics.
質問 # 100
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