Exam JN0-352 Simulator Online - JN0-352 Cert

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Juniper JN0-352 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Tunnels and Overlays	5-10%	- Tunnel types, encapsulation and operation - Overlay network design and connectivity - GRE, IP-IP and dynamic tunnel configuration
Topic 2: Layer 2 Security	10-15%	- Layer 2 firewall filters and security features - Port security, MAC limiting and storm control - DHCP snooping, Dynamic ARP Inspection and IP Source Guard
Topic 3: IP Multicast	5-10%	- PIM Dense Mode, Sparse Mode and RP mechanisms - Multicast routing monitoring and troubleshooting - IGMP operation and configuration
Topic 4: IS-IS	10-15%	- Configuration and route exchange - Adjacency establishment, levels and metrics - Scalable enterprise deployment and troubleshooting
Topic 5: Protocol Independent Routing	10-15%	- Basic routing policy and filter operation - Routing instances and route selection criteria - Routing tables, static routes and route preference
Topic 6: OSPF	15-20%	- Route summarization and redistribution - Neighbor formation, area design and LSA types - Configuration, verification and troubleshooting
Topic 7: BGP	15-20%	- Neighbor relationships and session establishment - Routing policies, filtering and common troubleshooting - Route advertisement, attributes and path selection
Topic 8: High Availability and Resiliency	5-10%	- Graceful restart and non-stop routing - Network resiliency design and troubleshooting - Redundancy protocols and failover mechanisms
Topic 9: Layer 2 Switching and VLANs	15-20%	- Spanning Tree Protocol (STP, RSTP, MSTP) operation and configuration - VLAN concepts, configuration, trunking and tagging - Link Aggregation Groups (LAG) and Virtual Chassis

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The JN0-352 PDF is the collection of real, valid, and updated Enterprise Routing and Switching, Specialist (JNCIS-ENT) (JN0-352) practice questions. The Juniper JN0-352 PDF dumps file works with all smart devices. You can use the JN0-352 PDF questions on your tablet, smartphone, or laptop and start JN0-352 Exam Preparation anytime and anywhere. The JN0-352 dumps PDF provides you with everything that you must need in JN0-352 exam preparation and enable you to crack the final JN0-352 exam quickly.

Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) Sample Questions (Q159-Q164):

NEW QUESTION # 159
Based on the traceoptions output shown in the exhibit, what is the problem with the adjacency?

A. area mismatch
B. connectivity
C. authentication mismatch
D. MTU mismatch

Answer: A

NEW QUESTION # 160
Click the Exhibit button. You configure the aggregate route 172.16.0.0/16 on router R1. The routing table currently contains active routes for 172.16.10.0/24 and 172.16.99.0/24. No other more-specific routes exist. Referring to the exhibit, which statement describes what R1 would do with traffic destined to 172.16.200.5?

A. R1 forwards the packet using the next hop of the active contributing route.
B. R1 forwards the packet to the default route.
C. R1 drops the packet and deactivates the aggregate route.
D. R1 drops the packet and sends an ICMP unreachable message.

Answer: D

Explanation:
The destination address 172.16.200.5 falls within the 172.16.0.0/16 aggregate's summarized range but does not fall within either of the two active, more-specific contributing routes actually present in the table -- 172.16.10.0/24 and 172.16.99.0/24 -- meaning no route more specific than the /16 itself exists to cover it. Under Junos's longest-match forwarding logic, the lookup for
172.16.200.5 therefore resolves to the aggregate route itself, and since aggregate routes are installed by default with a reject next hop rather than any real forwarding path, the router drops the packet and simultaneously generates an ICMP destination-unreachable message back to the originating source, explicitly signaling that no valid path exists for that specific destination even though a covering summary is being advertised. This reject behavior is precisely why aggregate routes are valuable for reducing the number of routes advertised upstream while still providing clear, immediate feedback for traffic aimed at address space within the summary that has no genuine underlying route, rather than silently black-holing it or misdirecting it toward an unrelated contributing route's next hop. The aggregate route itself remains active and installed throughout this process -- a gap in contributing coverage does not deactivate the aggregate, since the aggregate's activation depends only on at least one contributing route being active, which is satisfied here by both existing /24 blocks. There is also no default route present in this scenario to fall back upon.

NEW QUESTION # 161
Referring to the exhibit, why is this OSPF adjacency remaining in this state?

A. An MTU mismatch exists between the OSPF neighbors.
B. A subnet mask mismatch exists between the OSPF neighbors.
C. An area ID mismatch exists between the OSPF neighbors
D. A hello interval mismatch exists between the OSPF neighbors.

Answer: A

Explanation:
OSPF stuck in ExStart is mainly related to mismatched MTU. It could also be caused by a firewall filter on the loopback interface, but this is not an alternative.

NEW QUESTION # 162
You manage the Layer 2 network shown in the exhibit. You experience a failure on the ge-0/0/0 link between Switch-1 and Switch-2.

Which statement is correct about the expected behavior?

A. Switch-2 will become the root bridge for a separate RSTP topology
B. Switch-2's ge-0/0/2 port role and state will remain as designated and forwarding
C. Switch-2 will remove itself from the RSTP topology
D. Switch-2's ge-0/0/2 port role and state will transition to root and forwarding

Answer: D

NEW QUESTION # 163
You have two OSPF routers that will not form an adjacency. You enter the show log trace- ospfcommand.
Referring to the exhibit, which statement is correct?

A. You are stuck in the ExStart state.
B. There is a mismatched subnet.
C. The physical connection has been disconnected.
D. The wrong OSPF area has been configured.

Answer: D

NEW QUESTION # 164
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