Huawei H12-725_V4.0 Exam With Confidence Using Practice Dumps

Comprehensive and Detailed Explanation:

Aggressive modeis a faster IKE Phase 1 negotiation method butdoes not support NAT traversal (NAT-T) with AH.

NAT-T only works with ESP, because:

AH includes the original IP header in its integrity check, which breaks when NAT modifies the IP address.

ESP works with NAT-Tsince it does not include the original IP header in its integrity check.

Why is this statement false?

AH does not support NAT-T, soAH+ESP cannot be used in NAT traversal scenarios.

HCIP-Security References:

Huawei HCIP-Security Guide → IPsec VPN NAT Traversal

Comprehensive and Detailed Explanation:

DDoS defense mechanisms rely on threshold settingsto distinguish between normal and attack traffic.

Thresholds define:

Maximumallowedtraffic volume.

When exceeded, firewallstrigger mitigation actions(blocking, rate-limiting, etc.).

Why is this statement true?

Threshold-based detection is a fundamental part of DDoS mitigation.

HCIP-Security References:

Huawei HCIP-Security Guide → DDoS Attack Prevention Thresholds

Comprehensive and Detailed Explanation:

IPsec VPN only supports IP unicast traffic.

Non-IP unicast packets (such as multicast and broadcast) are not natively supported.

To transmit multicast traffic over IPsec, GRE over IPsec is required.

Why is this statement true?

Standard IPsec VPN does not support non-IP unicast packets.

HCIP-Security References:

Huawei HCIP-Security Guide → IPsec VPN Limitations