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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
Real Exam Qty:	70-80
Related Certifications:	JNCIA-ENT (JN0-347) JNCIS-ENT (JN0-349)
Exam Price:	$400 USD
Exam Format:	Multiple Choice, Drag and Drop, Multiple Select, Simulation
Certificate Validity Period:	3 years
Available Languages:	Japanese, English
Passing Score:	Pass / Fail (variable scale)
Exam Duration:	120 minutes
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:

Topic	Details
Topic 1	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 2	IP Telephony Features: This section focuses on features supporting VoIP deployments including Power over Ethernet, LLDP LLDP-MED protocols, and voice VLAN implementation.
Topic 3	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.
Topic 4	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 5	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.

Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) Sample Questions (Q69-Q74):

NEW QUESTION # 69
You have a workstation and an IP phone that connect to the same physical port on your Juniper switch.
Which statement is true?

A. The workstation and the phone both must send tagged traffic to the switch.
B. You must configure two logical interfaces on the switch port.
C. The switch port must be configured as a trunk port.
D. The access port can be configured to accept tagged and untagged traffic.

Answer: D

NEW QUESTION # 70
You are enabling CoS throughout your enterprise network using the DSCP bits. You plan to use an MF classifier on all edge devices while using BA classifiers on all transit core devices In this scenario, what should you use to provide consistent handling of traffic?

A. You should implement rewrite rules on the edge devices' egress interfaces to rewrite the DSCP bits as it leaves the device toward the core.
B. You should implement rewrite rules on the core devices' ingress interfaces to rewrite the DSCP bits as it enters the device.
C. You should implement rewrite rules on the edge devices' ingress interfaces to rewrite the DSCP bits as it enters the device.
D. You should implement rewrite rules on the core devices' egress interfaces to rewrite the DSCP bits as it leaves the device toward other core devices.

Answer: A

Explanation:
This scenario describes the standard transition of Class of Service (CoS) metadata from the network edge to the network core.
* MF vs. BA Classification:Edge devices useMultifield (MF) classifiersbecause incoming traffic often lacks markings. MF classification assigns traffic to an internalforwarding classbased on multiple fields (IPs, ports, etc.). Core devices useBehavior Aggregate (BA) classifiersbecause they are faster; they only look at the CoS bits (like DSCP) in the header to determine the forwarding class.
* The Problem:Internal forwarding class assignments made by an MF classifier on the edge device do not automatically travel with the packet. If the packet leaves the edge device with its original (potentially zeroed) DSCP bits, the core device's BA classifier will not be able to identify the priority.
* The Solution (Option A):You must implementrewrite ruleson theegress interfacesof the edge devices. A rewrite rule takes the internal forwarding class and loss priority assigned by the MF classifier and "writes" the corresponding DSCP value into the packet header as it exits toward the core.
This ensures that the core device sees the correct DSCP marking and can apply the appropriate BA classification.
* Incorrect Options:Rewrite rules are strictly an egress function to modify the packet for thenexthop.
Applying them on ingress (Option B) or core ingress (Option C) does not solve the problem of ensuring the packet header reflects the classification logic used during the internal switching process of the edge device.

NEW QUESTION # 71
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?

A. Change the maximum EAPOL request to 1.
B. Change the supplicant mode to multiple.
C. Enable MAC RADIUS restrict.
D. Change the supplicant mode to single-secure.

Answer: D

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 # 72
Which statement accurately describes class-of-service (CoS) policers on EX Series switches?

A. Policing is used for rewriting rules based on bandwidth usage.
B. Policing discards packets that exceed the configured rate, with no other configurable actions.
C. Policing uses a token bucket algorithm to enforce bandwidth limits.
D. Policers buffer excess traffic to ensure delivery, disregarding configured limits.

Answer: C

Explanation:
CoS policers on EX Series switches use a token bucket algorithm to measure traffic rates and enforce configured bandwidth limits by determining whether packets conform to the allowed rate profile.

NEW QUESTION # 73
Exhibit:

You receive the same 75.100.0.0/16 route from all four ISPs to which you are connected. Referring to the exhibit, which ISP's route will be selected as active?

A. ISP-A
B. ISP-D
C. ISP-C
D. ISP-B

Answer: B

NEW QUESTION # 74
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