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NEW QUESTION # 26
Click the Exhibit button.
Referring to the exhibit, which statement is correct?
Answer: C
Explanation:
Both devices have OSPF interface priority set to 0, which prevents them from being elected as DR or BDR. As a result, the OSPF adjacency will remain in the 2Way state, because neither device can assume the DR role.
NEW QUESTION # 27
Exhibit.
Referring to the exhibit. Ieaf2 is elected the designated forwarder
Which two statements are correct if server2 generates a broadcast frame*? (Choose two.)
Answer: A,B
Explanation:
The exhibit illustrates anEVPN-VXLANfabric using multi-homing. Server1 is dual-homed to Leaf1 and Leaf2 using anEthernet 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 aDesignated Forwarder (DF). For a given ESI, only one leaf switch is elected as the DF.
* The exhibit explicitly states thatLeaf2 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 incorrectbecause in a standard ingress replication or multicast-based underlay, all VTEPs in the VNI receive the broadcast.
* Option D is incorrectbecause Leaf1 is the non-designated forwarder (non-DF) for this segment and is prohibited from forwarding BUM traffic to the ESI.
NEW QUESTION # 28
Exhibit.
Referring to the exhibit, you see that the 0.0.0.0/0 route is coming from AS 64512.
What is the command to achieve this task?
Answer: A
Explanation:
The exhibit shows a BGP routing process where an Import Policy is being applied to routes received in the RIB-IN. Specifically, Policy 1 states: " Reject 0.0.0.0/0 from AS 64512. " In Junos OS, when a routing policy rejects a route, that route is not placed in the main routing table (inet.0) for active use. Instead, it becomes a hidden route. To verify that a specific peer is actually sending a route that is subsequently being rejected by your policy, you must use specific diagnostic commands:
Understanding " Hidden " Routes: When a BGP route is received but fails to meet policy requirements (or has an unreachable next-hop), Junos keeps it in the BGP RIB-IN but marks it as " hidden. " It will not appear in a standard show route command.
Command Logic (Option D): The command show route receive-protocol bgp < peer ip > hidden allows an administrator to view all routes received from a specific neighbor, including those that were rejected by import policies.
show route receive-protocol bgp < peer ip > : Shows only the routes that passed the import policy and were accepted into the table. Since the 0.0.0.0/0 route from AS 64512 is explicitly rejected in the exhibit, it would not show up here.
Adding the hidden keyword is the essential step to see the rejected default route and verify that AS 64512 is indeed sending it before the policy drops it.
Other Options:
Option A is incorrect because it only shows accepted routes.
Option B and C are used to filter the existing active routing table based on gateway or next-hop attributes, but they cannot show routes that have been rejected and excluded from that table.
NEW QUESTION # 29
You are currently using VLAN IDs 2 through 300 within your Layer 2 domain and you need to configure VSTP to prevent loops You must ensure that all VL ANs are loop free.
In this scenario, which statement is correct?
Answer: C
NEW QUESTION # 30
When configuring Q-in-Q tunneling, which type of tunneling involves the swapping of S-VLANs with C-VLANs?
Answer: C
Explanation:
VLAN rewrites in Q-in-Q tunneling perform tag manipulation operations, including swapping S- VLAN tags with C-VLAN tags. This functionality is used when VLAN identifiers must be modified as frames traverse the provider network.
NEW QUESTION # 31
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