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Valid Juniper JN0-683 Test Questions - JN0-683 Examcollection Free Dumps

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Juniper JN0-683 Exam Syllabus Topics:

Topic
Details

Topic 1

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.

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

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.

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

NEW QUESTION # 34
You are deploying a Clos IP fabric with an oversubscription ratio of 3:1.
In this scenario, which two statements are correct? (Choose two.)

A. The oversubscription ratio remains the same when you add spine devices.
B. The oversubscription ratio remains the same when you remove spine devices.
C. The oversubscription ratio decreases when you add spine devices.
D. The oversubscription ratio increases when you remove spine devices.

Answer: C,D

Explanation:
* Understanding Oversubscription in a Clos Fabric:
* The oversubscription ratio in a Clos IP fabric measures the ratio of the amount of edge (leaf) bandwidth to the core (spine) bandwidth. An oversubscription ratio of 3:1 means that there is three times more edge bandwidth compared to core bandwidth.
* Impact of Adding/Removing Spine Devices:
* Option C:If youremove spine devices, the total available core bandwidth decreases, while the edge bandwidth remains the same. This results in anincrease in the oversubscription ratio because there is now less core bandwidth to handle the same amount of edge traffic.
* Option B:Conversely, if youadd spine devices, the total core bandwidth increases. This decreases the oversubscription ratio because more core bandwidth is available to handle the edge traffic.
Conclusion:
* Option C:Correct-Removing spine devices increases the oversubscription ratio.
* Option B:Correct-Adding spine devices decreases the oversubscription ratio.

NEW QUESTION # 35
Which two statements are true about IP fabrics using unnumbered BGP? (Choose two.)

A. Unnumbered BGP peering automatically provisions IPv6 peering.
B. Unnumbered BGP requires that family inet is configured on each interface.
C. Unnumbered BGP peering automatically provisions IPv4 peering.
D. Unnumbered BGP requires that family inet6 is configured on each interface.

Answer: C,D

Explanation:
https://www.juniper.net/documentation/us/en/software/nce/nce-225-bgp-unnumbered/index.html

NEW QUESTION # 36
You are asked to interconnect Iwo data centers using a method that provides EVPN Type 2 connectivity, is highly scalable, and limits VXLAN tunnels between border leafdevices. What will satisfy these requirements?

A. IP VPN
B. over the top full-mesh interconnect
C. Type 2 seamless stitching
D. EVPN Type 2 stretch

Answer: C

Explanation:
* Requirement Analysis:
* The scenario requires a solution to interconnect two data centers that supports EVPN Type 2 connectivity. The solution must be highly scalable and must minimize the number of VXLAN tunnels between border leaf devices.
* Understanding Type 2 Seamless Stitching:
* Option D:Type 2 seamless stitchingis a method used in EVPN to provide Layer 2 connectivity (such as MAC address mobility) across different VXLAN segments. It is scalable because it allows only necessary tunnels to be established between border leaf devices, reducing the overhead of maintaining a full mesh of VXLAN tunnels.
Conclusion:
* Option D:Correct-Type 2 seamless stitching satisfies the requirement by enabling scalable, efficient interconnection of two data centers with minimal VXLAN tunnels.

NEW QUESTION # 37
You are asked to identify microburst traffic occurring in the network leading lo packet drops in your data center switches Which two tools would be used in this scenario? (Choose two.)

A. port buffer monitoring
B. Traceoptions
C. syslog
D. port mirroring

Answer: A,D

Explanation:
* Identifying Microburst Traffic:
* Microbursts are short spikes in network traffic that can overwhelm buffers and cause packet drops. Detecting and analyzing microbursts is crucial for understanding where packet loss might be occurring in a data center network.
* Port Buffer Monitoring:
* Port Buffer Monitoring:This tool specifically tracks the usage of switch buffers, helping to identify when microbursts are causing buffers to overflow, leading to packet drops.
* Port Mirroring:
* Port Mirroring:This tool allows you to monitor real-time traffic on a specific port by copying the traffic to another port where it can be analyzed, often with a packet analyzer. While port mirroring doesn't directly detect microbursts, it helps capture traffic patterns that can indicate microbursts.
Conclusion:
* Option C:Correct-Port buffer monitoring directly identifies buffer overflows caused by microbursts.
* Option A:Correct-Port mirroring allows for the detailed capture and analysis of traffic patterns, which can reveal microburst behavior.
Options B(Traceoptions) andD(Syslog) are less effective in identifying microburst traffic. Traceoptions focus on control plane traffic debugging, and Syslog is more about logging system events than detecting high- frequency traffic spikes.

NEW QUESTION # 38
Which two statements are true about EVPN routes for Data Center Interconnect? (Choose two.)

A. Type 5 EVPN routes do not require a VXLAN tunnel to the protocol next hop.
B. Type 5 EVPN routes require a VXLAN tunnel to the protocol next hop.
C. Type 2 EVPN routes do not require a VXLAN tunnel to the protocol next hop.
D. Type 2 EVPN routes require a VXLAN tunnel to the protocol next hop.

Answer: A,C

Explanation:
* Type 2 EVPN Routes:
* Type 2 routesadvertise MAC addresses within an EVPN instance and are used primarily for Layer 2 bridging. These routes do not require a VXLAN tunnel to the protocol next hop because they operate within the same Layer 2 domain.
* Type 5 EVPN Routes:
* Type 5 routesare used to advertise IP prefixes (Layer 3 routes) within EVPN. Similar to Type 2 routes, they do not require a VXLAN tunnel to the protocol next hop because they represent L3 routes, which are managed at the routing layer without the need for VXLAN encapsulation.
Conclusion:
* Option B:Correct-Type 2 routes do not need a VXLAN tunnel to the next hop, as they are used for Layer 2.
* Option D:Correct-Type 5 routes also do not need a VXLAN tunnel because they operate at Layer 3, handling IP prefixes.

NEW QUESTION # 39
......

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