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Juniper JN0-650 Exam Overview:

Certification Vendor:Juniper Networks
Exam Name:Enterprise Routing and Switching, Professional (JNCIP-ENT)
Exam Number:JN0-650
Exam Format:Simulation, Multiple Choice, Multiple Select, Drag and Drop
Related Certifications:JNCIA-ENT (JN0-347)
JNCIS-ENT (JN0-349)
Exam Duration:120 minutes
Exam Price:$400 USD
Available Languages:English, Japanese
Certificate Validity Period:3 years
Passing Score:Pass / Fail (variable scale)
Real Exam Qty:70-80
Sample Questions:Juniper JN0-650 Sample Questions
Exam Way:Online Proctored (OnVue) / In-Person Testing Center (Pearson VUE)
Pre Condition:JNCIA-ENT (JN0-347) or equivalent knowledge recommended; no mandatory prerequisite for exam eligibility
Official Syllabus URL:https://www.juniper.net/us/en/training/certification/track-data-center.html

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Juniper JN0-650 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Class of Service (CoS): This domain covers QoS mechanisms in Junos including CoS processing, header fields, forwarding classes, classification, policers, schedulers, drop profiles, shaping, and rewrite rules.
Topic 2
  • BGP: This section focuses on Border Gateway Protocol operations including route selection, next hop resolution, BGP attributes, communities, load balancing, IPv4
  • IPv6 address families, advanced options, and routing policy implementation.
Topic 3
  • IP Multicast: This domain addresses one-to-many communication using multicast routing, covering addressing, ASM vs SSM models, RPF, IGMP
  • snooping, PIM sparse-mode, rendezvous points, Anycast RP, MSDP, and routing policies.
Topic 4
  • EVPN: This section addresses Ethernet VPN technology for Layer 2 over Layer 3 connectivity, covering EVPN route types, VXLAN encapsulation, and multi-homing configurations.
Topic 5
  • Interior Gateway Protocols (IGPs): This domain covers internal routing protocols operating within a single autonomous system, including OSPFv2, OSPFv3, and routing policy implementation, along with configuration, troubleshooting, and monitoring skills.
Topic 6
  • Ethernet Switching and Spanning Tree: This section covers advanced Layer 2 switching including filter-based VLANs, private VLANs, MVRP, Layer 2 tunneling via Q-in-Q and L2PT, plus MSTP and VSTP protocols.
Topic 7
  • Layer 2 Authentication and Access Control: This domain examines network access control mechanisms including 802.1x, MAC RADIUS, captive portal, server fail fallback, guest VLANs, and multi-method authentication considerations.

Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) Sample Questions (Q65-Q70):

NEW QUESTION # 65
Click the Exhibit button.

You want to limit port access to only one device at a time.
Referring to the exhibit, which configuration change will accomplish this task?

Answer: B

Explanation:
Changing the supplicant mode to single-secure ensures that only one device can be authenticated on the port at a time. This mode prevents multiple devices from gaining access simultaneously while still enforcing secure 802.1X authentication.


NEW QUESTION # 66
You configured MVRP in your Layer 2 network and you are adding two new interfaces to your distribution switch. You are asked to ensure that if a rogue device that uses MVRP is connected to these interfaces, that the MVRP PDUs are ignored In this scenario, what should you configure to accomplish this task?

Answer: C

Explanation:
To secure a Layer 2 network running Multiple VLAN Registration Protocol (MVRP) against unauthorized VLAN propagation from rogue devices, you must control the registration state of the ports.
Forbidden Registration Mode (Option D): This mode is specifically designed to prevent an interface from participating in the MVRP exchange.
When a port is set to forbidden, it will neither register nor declare VLANs (except those statically configured on the interface).
If a rogue device sends MVRP PDUs to this interface, the distribution switch will ignore those PDUs, preventing the rogue device from dynamically creating or learning VLANs through that port.
Registration Hierarchy: In Junos OS 24.4, this is configured at the [edit protocols mvrp interface < interface- name > registration forbidden] level.
Other Modes: normal (default) allows full participation, while restricted ignores joins for VLANs not already statically defined on the switch but still declares its own.


NEW QUESTION # 67
Exhibit.

You want to limit port access to only one device at a time.
Referring to the exhibit, which configuration change will accomplish this task?

Answer: B

Explanation:
In Junos OS, the supplicant-mode configuration under protocols dot1x determines how the switch handles multiple MAC addresses on a single physical port. According to the exhibit, the current mode is set toSingle, and theNumber of connected supplicantsis2. This indicates thatthe port is currently allowing multiple devices, which contradicts the goal of limiting access to only one device at a time.
Here is the breakdown of whyOption Cis the correct solution based on Juniper's standard behavior:
* Supplicant Mode: Single (Current State):In this mode, the first device to authenticate opens the port for all subsequent devices. As long as the first device remains authenticated, other devices can send traffic through the port without individual authentication. This is why the exhibit shows 2 connected supplicants despite the mode being "Single."
* Supplicant Mode: Single-Secure (The Solution):This mode strictly limits the port toonly oneMAC address. Once a device successfully authenticates via 802.1X, the switch drops any traffic coming from any other MAC address on that port. If the authenticated device logs off or the session times out, the port becomes available for a new device, but never more than one simultaneously. *Supplicant Mode:
Multiple (Option B):This mode allows multiple supplicants to authenticate individually. Each MAC address must go through its own authentication process. This would allow more than one device, which is the opposite of the user's requirement.
* MAC RADIUS Restrict (Option A):This feature is used to force MAC-based authentication and does not inherently limit the number of devices to one in the same way that changing the supplicant mode does.
* Maximum EAPOL requests (Option D):This parameter defines how many times the switch will send an EAP-Request/Identity frame to a supplicant before giving up. Changing this to 1 does not restrict the number of devices allowed on the port; it only changes the retry logic for a single authentication attempt.
Configuration Example for Junos OS 24.4:To implement this change, you would use the following command: set protocols dot1x edit interface ge-0/0/10.0 supplicant-mode single-secure


NEW QUESTION # 68
What is the purpose of the 'route reflector' in BGP?

Answer: A


NEW QUESTION # 69
Which statement is true regarding LLDP advertisements?

Answer: A


NEW QUESTION # 70
......

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