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[General] JN0-650 Dumps PDF, Latest JN0-650 Exam Simulator

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【General】 JN0-650 Dumps PDF, Latest JN0-650 Exam Simulator

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Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) Sample Questions (Q42-Q47):NEW QUESTION # 42
Exhibit

Referring to the exhibit output, which statement is correct?
  • A. The output shows the route distinguisher of the device sending the EVPN Type 2 routes
  • B. The output shows the router ID of the device sending the EVPN Type 2 routes
  • C. IP addresses 10.1.1.1 and 10.1 2.3 are connected to the same VNI.
  • D. The device with an IP address of 192.168.100 2 is attached to VNI 5010
Answer: A
Explanation:
The exhibit displays the default-switch.evpn.0 routing table, which is used on Juniper leaf devices to store EVPN Type 2 (MAC/IP) routes.
* Route Distinguisher (Option C): In EVPN, the Route Distinguisher (RD) is an 8-byte prefix added to a route to make it unique within the BGP control plane. The RD format in the exhibit is <IP- Address>:<Identifier>.
* For example, the prefix 2:192.168.100.1:1::5010::... indicates an EVPN Type 2 route (2 where
192.168.100.1:1 is the Route Distinguisher.
* This RD identifies the specific routing instance on the originating VTEP that advertised the MAC
/IP address.
* Option A is incorrect: The RD 192.168.100.2:1 does not necessarily mean the host device has that IP; it means the originating switch has that router ID/IP used for its RD.
* Option B is incorrect: While the RD often incorporates the router ID, the RD itself is the full string (e.
g., 192.168.100.1:1), which is distinct from the raw Router ID used in the BGP summary.
* Option D is incorrect: Looking at the entries for 10.1.1.1 and 10.1.2.3, they are associated with different identifiers in the RD strings (5010 and 5020 respectively), which typically map to different VNIs or bridge domains.

NEW QUESTION # 43
Exhibit.

Referring to the exhibit. Ieaf2 is elected the designated forwarder
Which two statements are correct if server2 generates a broadcast frame*? (Choose two.)
  • A. The broadcast frame will be forwarded to leaf1 and Ieaf2.
  • B. The broadcast frame will not be forwarded to leaf1.
  • C. Only leaf1 will forward the broadcast frame to server1.
  • D. Only Ieaf2 will forward the broadcast frame to server1
Answer: A,D
Explanation:
The exhibit illustrates an EVPN-VXLAN fabric using multi-homing. Server1 is dual-homed to Leaf1 and Leaf2 using an Ethernet Segment Identifier (ESI) in an active-active or active-standby configuration.
Server2 is single-homed to Leaf3.
In EVPN environments, specific mechanisms are used to prevent loops and duplicate traffic when dealing with Broadcast, Unknown Unicast, and Multicast (BUM) traffic:
* Broadcast Propagation (Option A): When Server2 (connected to Leaf3) generates a broadcast frame, Leaf3 encapsulates this traffic into a VXLAN tunnel and forwards it to all other VTEPs (Virtual Tunnel End Points) that participate in that specific Virtual Network Instance (VNI). Therefore, both Leaf1 and Leaf2 will receive the broadcast frame from the core fabric.
* Designated Forwarder (DF) Election (Option C): To prevent a multi-homed device (like Server1) from receiving duplicate copies of the same broadcast frame from multiple leaf switches, EVPN utilizes a Designated Forwarder (DF). For a given ESI, only one leaf switch is elected as the DF.
* The exhibit explicitly states that Leaf2 is the Designated Forwarder.
* According to the Junos EVPN implementation, only the DF is responsible for decapsulating BUM traffic received from the core and forwarding it to the local access segment.
* While Leaf1 receives the frame (Option A), it will see that it is not the DF for that segment and will drop the frame rather than forwarding it to Server1. This ensures Server1 receives exactly one copy of the broadcast, delivered by Leaf2.
* Option B is incorrect because in a standard ingress replication or multicast-based underlay, all VTEPs in the VNI receive the broadcast.
* Option D is incorrect because Leaf1 is the non-designated forwarder (non-DF) for this segment and is prohibited from forwarding BUM traffic to the ESI.

NEW QUESTION # 44
Exhibit

Referring to the exhibit, what will enable active routes from both peers?
  • A. Configure neighbor 10.10.20.2 multipath under the ext-peers hierarchy.
  • B. Configure neighbor 172.16.1.1 under the ext-peers hierarchy.
  • C. Configure multipath under the ext-peers hierarchy
  • D. Configure neighbor 172.16.1.1 multipath under the ext-peers hierarchy.
Answer: C
Explanation:
The exhibit shows router1 (AS 65001) connected to router2 (AS 65002) via two parallel physical links. The show bgp summary output indicates that sessions are established with two neighbors: 10.10.10.1 and
10.10.20.1. Currently, for the second neighbor (10.10.20.1), there are 0 active routes despite having 4 accepted routes, which indicates that BGP has selected only one "best path" via the first neighbor for forwarding.
* BGP Best Path Selection: By default, BGP only selects a single best path for any given destination prefix and installs that one path into the forwarding table. In a topology with parallel links to the same AS, this leads to underutilization of available bandwidth.
* Multipath Solution (Option B): To enable active routes from both peers and allow for load-balancing (ECMP) across both links, you must enable the multipath feature.
* When the multipath statement is configured under the protocols bgp group ext-peers hierarchy, it tells Junos OS to install multiple equal-cost BGP paths into the routing table and subsequent forwarding table.
* Since both neighbors belong to the same peer group (ext-peers) and the same AS (65002), configuring multipath at the group level will apply to both sessions, allowing paths from both neighbors to be marked as "active".
* Incorrect Options:
* Option A: 172.16.1.1 is the loopback address of router2. The exhibit shows peering is currently done using physical interface addresses (10.10.10.1 and 10.10.20.1), so this address is irrelevant to the current active sessions.
* Option C: Configuring the neighbor address alone without the multipath parameter will not change the best-path selection behavior.
* Option D: 10.10.20.2 is the local interface IP of router1, not the neighbor's IP. BGP multipath must be configured to point to remote peer paths.
Configuration Example for Junos OS 24.4: To implement this, apply the following command: set protocols bgp group ext-peers multipath

NEW QUESTION # 45
You two just configured on an OSPF? Adjacency between two routers. after you commit the contraption, you notice that your adjacency is not up.


Refining to the exhibit what would cause the problem?
  • A. You mug Configure on interface-type on R2.
  • B. You must configure lo on R2
  • C. You must Configure bfd on R2
  • D. You must configure hello and dead intervals on R1
Answer: A

NEW QUESTION # 46
You are securing Web access in the network by using captive portal.
Which two statements are true? (Choose two.)
  • A. A local database can be configured for authentication.
  • B. Only HTTPS is supported for captive portal
  • C. Both HTTP and HTTPS are supported for captive portal.
  • D. A RADIUS server is required for authentication.
Answer: A,C

NEW QUESTION # 47
......
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