What is the following description of MPLS BGPVPN incorrect?

The TTL field in the label has the effect of preventing loops.
IBGP PEes generally use the Loopback interface address to establish a stable BGP neighbor relationship
BGP So0, which is used to prevent routes issued from a VPN site from passing through the MPLS backbone and back to that site. So0 is an extended group attribute that MP-BGP automatically generates.
The routing exchange between PE-CE can be static routing, OSPF multi-instance, IS-
IS multi-instance, EBGP

Answer(s): C

When you deploy LLQ, you need to configure bandwidth parameters, what is the significance of bandwidth parameters?( Single choice questions).

Provides a built-in policer to limit the maximum available bandwidth of a low-latency queue during congestion
The parameter should be as small as possible. It means that the bandwidth is always preserved, and even if the LLQ is set, changing the parameters will reduce the available bandwidth of the interface
It represents a reference CIR to calculate the burst size D of the built-in tactician token bucket Changing parameters is an option because LLQ always takes precedence over other queues

Answer(s): A

What categories can ACLs be divided into?

Answer(s): A,B,C,D

The CPU was attacked by malicious traffic. Here are some of the following ways to prevent an attack: Multi-select

USE CPCAR to rate limit messages sent up to the CPU according to the protocol type
Speed limiting of messages sent to the CPu on the soil.
Filter packets with AcL on the compromised router port
Turn off the remote login function of the router.
Analyze and count the packets sent to the CPU to find out the user of the attack source or the interface of the attack source.

Answer(s): C,D

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