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NEW QUESTION # 88
Click the Exhibit button.
You are receiving the 203.0.113.0/24 route from both upstream ISPs. You are asked to ensure that ISP A is the preferred ISP for traffic being sent to the 203.0.113.0/24 network from devices in AS 65512.
Referring to the exhibit, which two statements will accomplish this behavior? (Choose two.)
Answer: C,D
Explanation:
To make ISP A the preferred path for traffic to 203.0.113.0/24, you can increase the local preference for the route learned from ISP A or decrease the local preference for the route learned from ISP B. Higher local preference values are preferred within an AS.
NEW QUESTION # 89
Exhibit.
Referring to the exhibit, which statement is correct?
Answer: D
Explanation:
In OSPF, the election of a Designated Router (DR) and a Backup Designated Router (BDR) is mandatory on broadcast and non-broadcast multi-access (NBMA) network types to manage link-state database synchronization efficiently.
The exhibit shows that both device1 and device2 have their OSPF interface priority explicitly set to 0.
According to the Junos OS 24.4 OSPF implementation:
* Ineligibility (Priority 0): A router with a priority of 0 is strictly ineligible to be elected as a DR or BDR for that segment.
* No Election Possible: When every router on a broadcast segment has a priority of 0, the election process cannot complete because there are no eligible candidates to fill the required roles.
* State Behavior (Stuck in 2-Way): In OSPF adjacency formation, the 2-Way state indicates that bidirectional communication has been established (each router has seen itself in the other's Hello packets). However, to progress to the Exstart and Exchange states on a multi-access network, routers must first identify a DR and BDR.
* Result: Since neither router can become the DR, they both wait indefinitely for a third party (with priority > 0) to take the lead. Consequently, the OSPF adjacency will be stuck in the 2-Way state.
Adjacencies only reach the Full state with the DR and BDR; routers in a "DROther" role remain in 2- Way with each other.
Option A and D are incorrect because the router ID (IP address) only acts as a tiebreaker if priorities are equal and greater than 0. Option B is incorrect because routers cannot reach the Exstart state (where they negotiate master/slave for database exchange) without first having a DR/BDR elected.
NEW QUESTION # 90
Referring to the configuration shown in the exhibit, how many of the routes received from 10.0.0.2 will be active in the routing table?
Answer: A
NEW QUESTION # 91
Which two options are MAC limit actions? (Choose two.)
Answer: A,B
NEW QUESTION # 92
You are asked to establish authentication for users connecting to the corporate network. You must ensure that only corporate devices that are identified by MAC addresses are allowed to authenticate and connect Authentication must be handled by a centralized database.
Which authentication method would you implement in this scenario?
Answer: A
Explanation:
In this scenario, the requirement is to authenticate devices based on theirMAC addressesusing acentralized database.
* MAC RADIUS (Option A):This is the standard Juniper method for authenticating "headless" or non-
802.1X capable devices based on their hardware (MAC) address. The switch acts as a proxy, sending the device's MAC address as the username and password to a centralizedRADIUS server(the centralized database). If the MAC address is found in the server's database, the device is granted access to the network. This perfectly matches the user's requirement for MAC-based authentication and a centralized database.
* Captive Portal (Option B):This is a web-based authentication method requiring user interaction (login via a browser), which is not based on MAC address identification for the initial authentication phase.
* Supplicant Modes (Options C & D):These definehowmultiple devices are handled on an 802.1X- enabled port, but they are not authentication methods themselves; they rely on 802.1X (EAP-based) or MAC-RADIUS being already configured.
NEW QUESTION # 93
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