Reliable JN0-683 Exam Testking, Valid JN0-683 Study Guide

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Latest Reliable JN0-683 Exam Testking & Free Demo Valid JN0-683 Study Guide: Data Center, Professional (JNCIP-DC)

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Juniper JN0-683 Exam Syllabus Topics:

Topic	Details
Topic 1	Layer 3 Fabrics: This section measures the knowledge of professionals managing IP-based networks in data centers. It covers IP fabric architecture and routing, ensuring candidates understand how the network is structured for scalability and how traffic is routed efficiently.
Topic 2	EVPN-VXLAN Signaling: This section assesses an understanding of Ethernet VPN (EVPN) concepts, including route types, multicast handling, and Multiprotocol BGP (MBGP). It also covers EVPN architectures like CRB and ERB, MAC learning, and symmetric routing.
Topic 3	Data Center Deployment and Management: This section assesses the expertise of data center networking professionals like architects and engineers, focusing on key deployment concepts. Topics include Zero-touch provisioning (ZTP), which automates device setup in data centers without manual input.
Topic 4	VXLAN: This part requires knowledge of VXLAN, particularly how the control plane manages communication between devices, while the data plane handles traffic flow. Demonstrate knowledge of how to configure, Monitor, or Troubleshoot VXLAN.

Juniper Data Center, Professional (JNCIP-DC) Sample Questions (Q34-Q39):

NEW QUESTION # 34
What are three actions available tor MAC move limiting? (Choose three.)

A. shutdown
B. filter
C. log
D. drop
E. enable

Answer: A,C,D

Explanation:
* MAC Move Limiting:
* MAC move limiting is a security feature used in network switches to detect and mitigate rapid changes in MAC address locations, which could indicate a network issue or an attack such as MAC flapping or spoofing.
* When a MAC address is learned on a different interface than it was previously learned, the switch can take various actions to prevent potential issues.
* Available Actions:
* A. drop:This action drops packets from the MAC address if it violates the move limit, effectively blocking communication from the offending MAC address.
* D. log:This action logs the MAC move event without disrupting traffic, allowing network administrators to monitor and investigate the event.
* E. shutdown:This action shuts down the interface on which the MAC address violation occurred, effectively stopping all traffic on that interface to prevent further issues.
* Other Actions (Not Correct):
* B. filter:Filtering is not typically associated with MAC move limiting; it generally refers to applying ACLs or other mechanisms to filter traffic.
* C. enable:This is not an action related to MAC move limiting, as it does not represent a specific reaction to a MAC move event.
Data Center References:
* MAC move limiting is crucial for maintaining network stability and security, particularly in environments with dynamic or large-scale Layer 2 networks where MAC addresses might frequently change locations.

NEW QUESTION # 35
Why is a designated forwarder required in a multihomed CE-to-PE VXLAN environmentusing EVPN signalling?

A. The designated forwarder is required to prevent duplicate packets from being received on multihomed hosts.
B. The designated forwarder is required to prevent a traffic storm from being received on multihomed hosts.
C. The designated forwarder is required to prevent packets from looping between the PEs.
D. The designated forwarder is required to prevent flooding of MAC addresses to multihomed hosts.

Answer: A

Explanation:
* Understanding Multihomed CE-to-PE VXLAN Environment:
* In a VXLAN environment using EVPN signaling, multiple PEs (Provider Edge devices) can be connected to the same CE (Customer Edge device). This setup is referred to as multihoming, where a CE device has multiple connections to the network to ensure redundancy and load balancing.
* Role of the Designated Forwarder:
* The designated forwarder (DF) is a mechanism used in EVPN to manage the forwarding of broadcast, unknown unicast, and multicast (BUM) traffic in a multihomed environment. The DF is selected to ensure that only one of the PEs forwards this type of traffic to the CE, preventing loops and unnecessary duplicate packets.
* Avoiding Duplicate Packets:
* Without a designated forwarder, all PEs connected to a multihomed CE could potentially forward the same packet to the CE, resulting in duplicate packets. This duplication can cause issues with packet processing on the CE, leading to inefficiencies and potential network problems.
Conclusion:
* Option D:Correct-The designated forwarder is essential to prevent duplicate packets from being received on multihomed hosts, ensuring that only one PE forwards BUM traffic to the CE.

NEW QUESTION # 36
Which three statements are correct about VXLAN control planes? (Choose three.)

A. Both multicast and EVPN can facilitate MAC learning.
B. EVPN enables fast convergence and updates.
C. EVPN is inefficient and does not scale well.
D. Multicast does not require as many resources.
E. Multicast is not agile and requires manual VNI mapping.

Answer: A,B,D

Explanation:
* VXLAN Control Planes:
* VXLAN (Virtual Extensible LAN) uses different control planes to handle MAC learning and traffic forwarding. The control planes include multicast and EVPN (Ethernet VPN).
* Multicast and EVPN Comparison:
* Option B:Both multicast and EVPN can be used for MAC learning in a VXLAN environment.
Multicast is a more traditional approach, while EVPN is more advanced and supports distributed MAC learning.
* Option D:EVPN offers benefits such as fast convergence and rapid updates, making it more efficient and scalable for modern data center environments.
* Option E:Multicast does not require as many resources because it relies on traditional Layer 3 multicast mechanisms to distribute broadcast, unknown unicast, and multicast (BUM) traffic.
However, it can be less flexible and less scalable compared to EVPN.
Conclusion:
* Option B:Correct-Both control planes facilitate MAC learning.
* Option D:Correct-EVPN provides fast convergence and updates.
* Option E:Correct-Multicast is resource-efficient but less flexible.

NEW QUESTION # 37
Exhibit.

Connections between hosts connected to Leaf-1 and Leaf-2 are not working correctly.
Referring to the exhibit, which two configuration changes are required to solve the problem? (Choose two.)

A. Configure the set switch-options vtep-source-interface 100. 0 parameter on Leaf-1.
B. Configure the set switch-options vrf-target target: 65000:55 parameter on Leaf-2.
C. Configure the set switch-options service-id 1 parameter on Leaf-2.
D. Configure the set switch-options route-distinguisher 192.168.100.51:2 parameter on Leaf-1.

Answer: B,C

Explanation:
* Review of the Exhibit:
* The exhibit shows the switch configuration for Leaf-1 and Leaf-2. The configurations include route distinguishers, VRF targets, and service IDs, all of which are crucial for ensuring proper operation in an EVPN-VXLAN environment.
* Service-ID Consistency:
* The service ID must be consistent across all participating leaf devices in the same EVPN instance to ensure that they are part of the same VXLAN overlay network.
* VRF Target Consistency:
* The vrf-target parameter must also be consistent across devices to ensure that VRFs (Virtual Routing and Forwarding instances) are correctly imported and exported between leaf nodes.
Conclusion:
* Option B:Correct-Setting the same service-id on Leaf-2 ensures that it is part of the same VXLAN overlay as Leaf-1.
* Option D:Correct-The vrf-target on Leaf-2 should match Leaf-1 to ensure consistent routing policies and proper route exchange.

NEW QUESTION # 38
As part of the onboarding process for new switches being added to your data centers, your company uses Juniper Networks' ZTP process. As part of the ZTP process, a script is executed by the devices being onboarded.
Which statement is correct in this scenario?

A. The Junos ZTP process supports Python, SLAX, and Perl.
B. The Junos ZTP process supports JScript. Ansible. and Perl.
C. The Junos ZTP process supports Shell. JScript. and Ansible.
D. The Junos ZTP process supports Shell. Python, and SLAX.

Answer: D

Explanation:
* Zero Touch Provisioning (ZTP):
* Juniper Networks' ZTP (Zero Touch Provisioning) process automates the deployment of new devices by allowing them to fetch and execute scripts for configuration and setup as they are powered on and connected to the network.
* Supported Scripting Languages:
* The Junos OS supports several scripting languages that can be used during the ZTP process:
* Shellscripts are often used for general automation tasks.
* Pythonis a widely supported language in Junos, offering powerful scripting capabilities for automating network tasks.
* SLAX(Service Logic Execution Environment) is a scripting language specific to Junos, designed to automate configuration tasks and simplify network operations.
Conclusion:
* Option D:Correct-Junos ZTP supports Shell, Python, and SLAX, making it the correct choice among the provided options.

NEW QUESTION # 39
......

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RELIABLE JN0-683 EXAM TESTKING, VALID JN0-683 STUDY GUIDE

Reliable JN0-683 Exam Testking, Valid JN0-683 Study Guide