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H12-725_V4.0 Latest Test Cost & H12-725_V4.0 Regualer Update

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Huawei HCIP-Security V4.0 Sample Questions (Q44-Q49):

NEW QUESTION # 44
In the figure, FW_A connects to FW_B through two links working in active/standby mode. When the active link of FW_A is faulty, the old IPsec tunnel 1 needs to be torn down, and IPsec tunnel 2 needs to be established with FW_B through the standby link to route traffic. In this case, configuring the IKE _____ detection mechanism on FW_A helps detect link faults and tear down the IPsec tunnel.(Enter lowercase letters.)

Answer:

Explanation:
dpd
Explanation:
* What is IKE DPD (Dead Peer Detection)?
* IKE DPD (Dead Peer Detection)is a mechanism used inIPsec VPNsto check if a remote VPN peer is still reachable.
* It allows the firewall to detectlink failuresandautomatically tear down and re-establish IPsec tunnelswhen necessary.
* Why is DPD required in this scenario?
* The network uses an active/standby link setup:
* IPsec Tunnel 1 (Active) # Uses Link 1 (GE0/0/1).
* IPsec Tunnel 2 (Standby) # Uses Link 2 (GE0/0/2).
* IfLink 1 fails, the firewall must detect the failure andtear down IPsec Tunnel 1before establishingIPsec Tunnel 2 over Link 2.
* DPD detects unreachable peersand triggers a failover.
* How does IKE DPD work?
* DPD periodically sends probes (HELLO messages) to the remote VPN peer.
* If no response is received within a timeout period, the firewall assumes the peer is down.
* Thefirewall deletes the IPsec tunnel and switches to the backup link.
* Why is the answer "dpd" (lowercase)?
* The questionexplicitly asks for lowercase letters.
* "dpd" (Dead Peer Detection) is the correct technical term in Huawei firewalls and networking standards.
HCIP-Security References:
* Huawei HCIP-Security Guide# IPsec VPN High Availability & DPD
* Huawei USG Series Firewall Configuration Guide# IKE Dead Peer Detection (DPD)

NEW QUESTION # 45
In the figure, if 802.1X authentication is used for wired users on the network, the network admission device and terminals must be connected through a Layer 2 network.

Options:

A. FALSE
B. TRUE

Answer: B

Explanation:
Understanding 802.1X Authentication in Wired Networks:
* 802.1X is a port-based network access control (PNAC) protocolthat requires aLayer 2 connection between thesupplicant (PC), the authenticator (switch), and the authentication server (e.g., RADIUS server).
* In wired networks,802.1X authentication occurs at the Ethernet switch (Layer 2 device), which enforces authenticationbefore allowing network access.
Why Must the Network Be Layer 2?
* 802.1X authentication operates at Layer 2 (Data Link Layer) before any IP-based communication (Layer 3) occurs.
* If the authentication device and user terminal were on different Layer 3 networks, the authentication packets (EAPOL - Extensible Authentication Protocol Over LAN)would not be forwarded.
* In the figure, the authentication control point is at theaggregation switch, which means thePC and switch must be in the same Layer 2 domain.
Components of 802.1X Authentication in the Figure:
* Supplicant (PC)# The device requesting network access.
* Authenticator (Aggregation Switch)# The switch controlling access to the network based on authentication results.
* Authentication Server (iMaster NCE-Campus & AD Server)# Verifies user credentials and grants or denies access.
* Layer 2 Connectivity Requirement# ThePC must be in the same Layer 2 networkas the Authenticatorto communicate via EAPOL.
Why "TRUE" is the Correct answer:
* 802.1X authentication is performed before IP addresses are assigned, meaning it can only operate in a Layer 2 network.
* EAPOL (Extensible Authentication Protocol Over LAN) messages are not routableand must stay within a single Layer 2 broadcast domain.
* In enterprise networks,VLAN-based 802.1X authentication is often used, where authenticated users are assigned to a specific VLAN.
HCIP-Security References:
* Huawei HCIP-Security Guide# 802.1X Authentication in Enterprise Networks
* Huawei iMaster NCE-Campus Documentation# Authentication Control and NAC Deployment
* IEEE 802.1X Standard Documentation# Layer 2 Network Authentication

NEW QUESTION # 46
Which of the following statements are true about SYN scanning attacks?(Select All that Apply)

A. When the scanner sends a SYN packet, an RST response indicates a closed port.
B. If the peer end does not respond to the SYN packet sent by the scanner, the peer host does not exist, or filtering is performed on the network or host.
C. When the scanner sends a SYN packet, a SYN-ACK response indicates an open port.
D. When the scanner sends a SYN packet, if the peer end responds with a SYN-ACK packet, the scanner then responds with an ACK packet to complete the three-way handshake.

Answer: A,B,C

Explanation:
Comprehensive and Detailed Explanation:
* SYN scanning is a stealthy technique used to identify open ports on a target system without fully establishing a TCP connection.
* How SYN scanning works:
* The scanner sends aSYN packetto the target port.
* The target responds based on the port state:
* SYN-ACK # Port is open(Correct - D).
* RST # Port is closed(Correct - A).
* No response # The host does not exist, or a firewall is blocking it(Correct - B).
* The scanner doesnot send an ACK(unlike a full TCP connection). Instead, it sends anRSTto avoid detection.
* Why is C incorrect?
* In SYN scanning, the scanner does NOT send an ACK to complete thehandshake. Instead, it sends an RST to abort the connection.
HCIP-Security References:
* Huawei HCIP-Security Guide # SYN Scanning Techniques

NEW QUESTION # 47
The Nginx application is deployed on a Linux host. By checking Nginx logs, O&M engineers can obtain the complete URL information submitted by users and determine whether the Linux host is under SQL injection attacks.

A. FALSE
B. TRUE

Answer: B

Explanation:
Comprehensive and Detailed Explanation:
* Nginx logs store detailed HTTP request information, including:
* RequestedURLs
* ClientIP addresses
* Query parameters(which may contain SQL injection attempts)
* SQL injection detection using logs:
* SuspiciousSQL keywordsin GET/POST requests (e.g., ' OR 1=1 -- or UNION SELECT).
* Repeated attack attemptsfrom a single source IP.
* Why is this statement true?
* Nginx logs provide full request details, enabling engineers to detect SQL injection attempts.
HCIP-Security References:
* Huawei HCIP-Security Guide # Web Attack Detection & Log Analysis

NEW QUESTION # 48
If a Portal authentication user goes offline but neither the access device nor the RADIUS server detects this event, many problems may occur. To prevent this from occurring, the access device needs to detect a user logout immediately, delete the user entry, and instruct the RADIUS server to stop accounting.
Which of the following can trigger a Portal user logout?(Select All that Apply)

A. The user initiates a logout request.
B. The access device logs out the user.
C. The authentication server logs out the user.
D. The Portal server logs out the user.

Answer: A,B,C,D

Explanation:
Comprehensive and Detailed Explanation:
* Portal authentication requires active session monitoring.
* User logout can be triggered by multiple methods:
* A. Portal server logout# The Portal system forcefully logs out a user.
* B. Authentication server logout# The authentication system revokes access.
* C. User-initiated logout# The user manually logs out via a Portal page.
* D. Access device logout# If the firewall detects inactivity, it can remove the session.
* Why are all options correct?
* Each method can trigger a user logout in Portal authentication.
HCIP-Security References:
* Huawei HCIP-Security Guide # Portal Authentication Logout Mechanisms

NEW QUESTION # 49
......

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