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NEW QUESTION # 85
Click the Exhibit button.
Which two statements about the firewall filter terms shown in the exhibit are true? (Choose two.)
Answer: B,C
Explanation:
A firewall filter is a Junos security solution to filter or control traffic at the data plane as they enter or exit an interface 1 . A firewall filter consists of one or more terms, each with a set of conditions and actions 2 . The device evaluates every packet against the firewall filter terms in the order they are defined, and performs the actions specified in the first term that matches the packet 3 . If no term matches the packet, the device discards the packet by default 3 .
In the exhibit, the firewall filter mac-address is applied to the family ethernet-switching and involves filtering MAC addresses. There are two terms, term one and term two , each with different conditions and actions. The from statement specifies the match conditions, and the then statement specifies the actions. If the from statement is omitted, all packets are considered to match and the actions in the then statement are taken 2 . If the then statement is omitted, the packets that match the conditions in the from statement are accepted by default 2 .
* Term one logs traffic from a specific source MAC address 88:05:00:29:3c:de/48 . The log action is a nonterminating action, which means that the device continues to evaluate the packet against the remaining terms in the filter 2 . Therefore, traffic that matches the from statement in term one is not discarded, and option A is incorrect.
* Term two accepts all other traffic not specified in term one. The then accept action is a terminating action, which means that the device stops evaluating the packet against the filter and forwards the packet 2 . Therefore, all traffic not matching the from statement in term one is accepted by term two, and option D is correct.
* Term two does not have a from statement, which means that all packets are considered to match this term. Therefore, traffic matching the from statement in term two is not logged, and option B is incorrect.
* Term one does not have a then statement other than the log action, which means that the packets that match the from statement are accepted by default. Therefore, traffic that matches the from statement in term one is accepted, and option C is correct.
References:
2 : term (Firewall Filter)
3 : Firewall Filters Overview
1 : Juniper Firewall Filter Configuration Example
NEW QUESTION # 86
You need to configure a LAG between your switches. In this scenario, which two statements are correct?
(Choose two.)
Answer: C,D
Explanation:
B is correct because duplex and speed settings are required to match on both participating devices. According to the Juniper Networks documentation1, all the interfaces in a LAG must have the same speed and be in full-duplex mode. This ensures that the LAG can operate as a single logical link without any performance or compatibility issues.
C is correct because member links are not required to be contiguous ports. According to the Juniper Networks documentation2, you can group any Ethernet interfaces on a switch into a LAG, regardless of their physical location or slot number. This provides flexibility and scalability for configuring LAGs on switches.
NEW QUESTION # 87
In RSTP, which three port roles are associated with the discarding state? (Choose three.)
Answer: B,C,D
Explanation:
In Rapid Spanning Tree Protocol (RSTP), there are several port roles that determine the behavior of the port in the spanning tree 1 2 3 . The roles include root, designated, alternate, backup, and disabled 1 2 3 .
The discarding state is associated with the backup, alternate, and disabled roles 1 2 3 . In a stable topology with consistent port roles throughout the network, RSTP ensures that every root port and designated port immediately transition to the forwarding state while all alternate and backup ports are always in the discarding state 2 . Disabled ports are also in the discarding state 3 .
Therefore, options B, C, and D are correct.
NEW QUESTION # 88
What is the default MAC age-out timer on an EX Series switch?
Answer: C
Explanation:
The default MAC age-out timer on an EX Series switch is 300 seconds 1 2 . The MAC age-out timer is the maximum time that an entry can remain in the MAC table before it "ages out," or is removed 3 1 . This configuration can influence efficiency of network resource use by affecting the amount of traffic that is flooded to all interfaces 1 . When traffic is received for MAC addresses no longer in the Ethernet routing table, the router floods the traffic to all interfaces 1 .
NEW QUESTION # 89
In RSTP, which three port roles are associated with the discarding state? (Choose three.)
Answer: B,C,D
Explanation:
Explanation
In Rapid Spanning Tree Protocol (RSTP), there are several port roles that determine the behavior of the port in the spanning tree123. The roles include root, designated, alternate, backup, and disabled123.
The discarding state is associated with the backup, alternate, and disabled roles123. In a stable topology with consistent port roles throughout the network, RSTP ensures that every root port and designated port immediately transition to the forwarding state while all alternate and backup ports are always in the discarding state2. Disabled ports are also in the discarding state3.
Therefore, options B, C, and D are correct.
NEW QUESTION # 90
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