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| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Enterprise Routing and Switching, Professional (JNCIP-ENT) |
| Exam Number: | JN0-650 |
| Exam Duration: | 120 minutes |
| Exam Price: | USD 400 |
| Available Languages: | English |
| Related Certifications: | JNCIP-ENT JNCIS-ENT JNCIA-Junos JNCIE-ENT |
| Real Exam Qty: | 60-65 |
| Certificate Validity Period: | 3 years |
| Exam Format: | Drag and drop, Multiple response, Multiple choice, Scenario-based questions |
| Recommended Training: | Juniper Day One Books (Enterprise Routing) Juniper Learning Portal - JNCIP-ENT Training |
| Exam Registration: | Pearson VUE Juniper Exams Juniper Certification Portal |
| Sample Questions: | Juniper JN0-650 Sample Questions |
| Exam Way: | Computer-based testing (online proctored or test center depending on region) |
| Pre Condition: | Recommended prerequisite: JNCIS-ENT certification or equivalent networking experience with Junos OS and enterprise routing concepts |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification/certification-tracks/enterprise-routing-switching/ |
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NEW QUESTION # 16
You have PIM SM multicast configured and running in a network environment comprised of EX4300 devices. Your customers report increased delay when switching channels using IPTV. To help decrease the delay, you implement PIM join load balancing.
You add the set protocols pim join-load-balance command to the configuration. After committing, you notice that the flows are still using only one path.
In this scenario, which statement is correct?
Answer: A
NEW QUESTION # 17
You are asked to implement CoS schedulers to allocate resources to queues on your EX Series device. In this scenario, which two statements are correct? (Choose two.)
Answer: A,B
Explanation:
Low-priority queues are allowed to use excess available bandwidth when higher-priority queues are not fully utilizing their allocations.
Strict-high priority queues are serviced before other queues and can consume all available bandwidth during congestion, potentially starving lower-priority queues.
NEW QUESTION # 18
Exhibit
You need to configure the non-RP routers in your network to dynamically learn the location of the RP using standard protocols only. You have already applied the configuration shown in the exhibit, but the routers have not learned the location of the RP.
Which additional step must you take to fulfill these requirements?
Answer: A
Explanation:
The exhibit shows a multicast network running PIM Sparse Mode where R2 is configured as a local Rendezvous Point (RP). However, the non-RP routers (like R5) show no learned RP in their show pim rps output. To resolve this using standard protocols for dynamic RP discovery, you must implement a mechanism that automates the distribution of RP information across the PIM domain.
Bootstrap Router (BSR) (Option B): BSR is the industry-standard (RFC 5059) mechanism for dynamically electing an RP and distributing that information throughout a PIM-SM domain.
It uses two roles: Candidate-RPs (C-RPs), which announce their desire to be an RP, and Candidate-BSRs (C- BSRs), which collect these announcements and flood them to all other routers in the network via PIM bootstrap messages.
BSR is a " standard protocol " as it is part of the PIMv2 specification. Once configured on R2 (as C-RP) and potentially R1 or R2 (as C-BSR), all other routers will dynamically learn that R2 is the RP for the specified group ranges.
Auto-RP (Option D): While this also provides dynamic RP discovery, it is a proprietary Cisco protocol.
Although Junos supports it for interoperability, the question specifically asks for " standard protocols only, " making BSR the preferred choice.
MSDP (Option A): Multicast Source Discovery Protocol (MSDP) is used to share information about active sources between different PIM domains or for Anycast-RP. It does not handle the initial discovery of an RP within a single domain for standard PIM-SM operations.
Anycast RP (Option C): This is a technique used for RP redundancy and load balancing. While it can use BSR or MSDP for synchronization, it is a design architecture rather than a standalone " standard protocol " for the basic dynamic discovery of an RP in the manner requested here.
Configuration Example for BSR in Junos OS 24.4: To enable this, you would add the following to the RP (R2):
set protocols pim rp bootstrap-discovery
set protocols pim rp candidate-rp 10.222.1.2 group-ranges 224.0.0.0/4
set protocols pim rp candidate-bsr 10.222.1.2
NEW QUESTION # 19
Which two statements are true about 802.1Z dynamic filters based on RADUIS attributes? (Choose two.)
Answer: A,C
NEW QUESTION # 20
Exhibit
Referring to the exhibit. R2 receives a packet from the multicast source on its ge-0/0/4 0 interface.
Which two statements are correct in this scenario? (Choose two.)
Answer: A,C
Explanation:
The exhibit illustrates a PIM multicast environment where router R2 has received a multicast packet from Source 1 (192.168.100.10) on its ge-0/0/4.0 interface. To prevent loops, PIM-SM uses a mechanism called Reverse Path Forwarding (RPF).
* RPF Check Process (Option A): When a multicast packet arrives, the router performs an RPF check by looking up the source's IP address in its unicast routing table (typically inet.0).
* The exhibit's command output, show multicast rpf 192.168.100.10, explicitly shows that for the source network $192.168.100.0/24$, the RPF interface is ge-0/0/1.0.
* Because the packet actually arrived on ge-0/0/4.0 instead of the expected ge-0/0/1.0 interface, the RPF check fails.
* Packet Discard (Option C): According to standard PIM-SM operation in Junos OS 24.4, if a multicast packet fails the RPF check-meaning it arrived on an interface that the router does not use to reach the source via unicast-the packet is discarded. This is a fundamental loop-prevention mechanism that ensures multicast traffic is only accepted from the shortest path toward the source.
* Option B is incorrect because the router will not add any interfaces to the Outgoing Interface List (OIL) for a packet that fails the initial RPF check.
* Option D is incorrect because the exhibit clearly shows the interface in the RPF table (ge-0/0/1.0) is different from the interface where the packet was received (ge-0/0/4.0).
NEW QUESTION # 21
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