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NEW QUESTION # 74
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: B,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 # 75
You have deployed a new Juniper switch.
Which two statements are true?
Answer: A,D
NEW QUESTION # 76
You need to perform maintenance on one of your OSPF routers. You do not want the other OSPF routers on the network to forward traffic to this router during the maintenance window. Which OSPF configuration parameter would you implement to accomplish this task?
Answer: D
Explanation:
Configuring the overload parameter on an OSPF router tells other routers in the area to temporarily avoid using this router as a transit path. This allows maintenance to be performed without disrupting traffic flow, as OSPF will continue routing around the overloaded router.
NEW QUESTION # 77
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?
Answer: A
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 # 78
Which two statements are correct when using the no-loss forwarding class? (Choose two.)
Answer: B,C
Explanation:
When using the no-loss forwarding class, traffic is given strict priority to minimize loss. This requires forwarding class sets to map traffic to the no-loss class and priority-based flow control to ensure congestion is managed without dropping packets.
NEW QUESTION # 79
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