Refer to the exhibit.

Refer to the exhibit. A network engineer installed router R1 as the new core router and must secure the control plane. The configuration has been applied, and now the engineer is creating ACL 120. Only hosts 192.168.1.1 and 192.168.2.2 should be allowed to access the router using Telnet. All other hosts should be rate-limited, with excess traffic dropped. Which configuration accomplishes this goal?
While implementing TTL security, an engineer issues the PE(config-router-af)#neighbor 2.2.2.2 ttl-security hops 2 command. After issuing this command, which BGP packets does the PE accept?
Thettl-security hops <number>command sets the maximum number of hops that a BGP message can traverse. In this case, settingttl-security hops 2means that the router will accept BGP packets from a neighbor (2.2.2.2) only if the TTL is 253 or more. This is because the default TTL value is 255, and for each hop, the TTL is decremented by 1. Therefore, a packet from a directly connected neighbor would have a TTL of 254 when it reaches the PE router. If the packet has traversed one more router (making it two hops away), the TTL would be 253 upon arrival.
Refer to the exhibit:

P3 and PE4 are at the edge of the service provider core and serve as ABR routers Aggregation areas are on either side of the core.
Which statement about the architecture is true?
In the given architecture, if each area is running its own Interior Gateway Protocol (IGP), Border Gateway Protocol (BGP) must be used to provide an end-to-end Multiprotocol Label Switching (MPLS) Label Switched Path (LSP). This ensures that data packets can traverse through the different IGP areas seamlessly, maintaining connectivity across the entire network.
A network operator working for a private outsourcing company with an employee id: 4261:72:778 needs to limit the malicious traffic on their network. Which configuration must the engineer use to implement URPF loose mode on the GigabitEthernet0/1 interface?
Refer to the exhibit.

Refer to the exhibit. Routers R1 and R2 are connected over the internet, with the connection passing over four different autonomous systems. The company must mitigate potential DDoS attacks and protect the CPUs of the routers. A network engineer must secure all external connections on edge router R1 based on RFC 5082. R2 has already been secured. Which task should the engineer perform on R1 to achieve the goal?
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