Free and Premium Huawei H12-725_V4.0 Dumps Questions Answers

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

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POST → Sending Information to the Server

ThePOST methodin HTTP is used to send data to a web server.

Examples include:

Submitting login credentials.

Posting comments or messages on a forum.

Uploading files via web applications.

UnlikeGET, POSThides sensitive information in the request body, making it more secure for transmitting login credentials or personal data.

Internet Access Using a Proxy → Firewall Deployment for Proxy Access

Aproxy serverallows users toaccess the internet through a controlled gateway.

To enforce security policies, afirewall must be deployed between the intranet and the proxy server.

Proxies are used for:

Content filtering(blocking unwanted websites).

Access control(restricting web usage based on user roles).

Anonymization(hiding the user's original IP address).

File Upload/Download Size → Controlling Upload Limits

Firewalls and security devicescan restrict file upload/download sizesto:

Prevent excessive bandwidth usage.

Block potentially malicious file uploads.

Alert and Block Thresholds:

Alert threshold:Logs a warning if a file exceeds a specific size.

Block threshold:Prevents files larger than the configured limit from being uploaded or downloaded.

Comprehensive and Detailed Explanation:

Hot standby networkingensureshigh availabilityby keeping a backup firewall ready in case of failure.

Two main modes exist:

Active/Standby Mode→ One firewall is active, and the other remains standby. Configuration is synchronized fromactive → standby.

Load-Sharing Mode→ Both firewallsprocess traffic simultaneously, improving performance.

Why is A false?

InLoad-Sharing Mode, both firewalls are active, butconfiguration synchronization does not cause conflicts. Instead, the firewalls synchronize states properly.

Why is D false?

InLoad-Sharing Mode, configuration is always synchronizedfrom the active firewall to the standby firewall, not the other way around.

HCIP-Security References:

Huawei HCIP-Security Guide → Hot Standby Configuration

Huawei USG Firewalls High Availability Guide

Comprehensive and Detailed Explanation:

Inbound bandwidth= Trafficenteringthe firewall.

Outbound bandwidth= Trafficleavingthe firewall.

Correct answer:

A. Private → Public traffic is controlled by outbound bandwidth.

Why are the other options incorrect?

Bis incorrect because public → private traffic is controlled byinbound bandwidth, not outbound.

Cis incorrect because inbound bandwidth does not apply to private → public traffic.

Dis incorrect because public → private traffic is controlled by inbound bandwidth.

HCIP-Security References:

Huawei HCIP-Security Guide → Firewall Virtual System Bandwidth Control

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HCIP-Security References:

Huawei HCIP-Security Guide→ Bandwidth Management & Traffic Control Policies

Huawei QoS Configuration Guide→ Traffic Classification, Policing, and Queue Scheduling

1️⃣Step 1: Traffic Classification and Bandwidth Policy Matching

The firewallfirst classifies trafficusing predefined bandwidth policies.

These policies match traffic based on criteria such assource/destination IP, application type, and protocol.

This step ensures that each type of traffic is categorized correctly before applying bandwidth restrictions.

2️⃣Step 2: Traffic Processing Based on Bandwidth Policies

Once traffic is classified,the firewall enforces bandwidth limits and security actions:

Traffic exceeding the assigned bandwidth is discarded or throttled.

Service connection limits are enforced to prevent excessive connections per user or application.

3️⃣Step 3: Queue Scheduling and Priority Handling

If trafficexceeds the available bandwidth, the firewallprioritizes high-priority trafficusing queue scheduling mechanisms.

Techniques likeWeighted Fair Queuing (WFQ) and Priority Queuing (PQ)ensure thatcritical traffic (e.g., VoIP, business applications) is prioritized over less important traffic (e.g., downloads, streaming).

Comprehensive and Detailed Explanation:

iMaster NCE-Campus authentication supports multi-condition matching:

Account information(e.g., username, password, role-based policies).

SSID information(specific Wi-Fi network authentication).

Terminal IP address ranges(assigns different policies based on network segments).

Why is this statement true?

Multiple authentication conditions can be applied simultaneously to enforce flexible access control.

HCIP-Security References:

Huawei HCIP-Security Guide → iMaster NCE-Campus Authentication Policy

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

Comprehensive and Detailed Explanation:

Firewalls with advanced security features(such asIPS, Antivirus, and File Filtering) candetect and respond to file anomalies.

Actions that can be taken when an anomaly is detected:

A. Alarm→ Generates a log entry and notifies the administrator.

C. Block→ Prevents the file from being transferred.

D. Delete attachment→ Removes malicious attachments from emails.

Why is B incorrect?

Allowing a detected malicious file is not a valid security response.

HCIP-Security References:

Huawei HCIP-Security Guide → File Filtering & IPS Protection

Comprehensive and Detailed Explanation:

GRE over IPsecis used totunnel non-IP traffic, multicast, and dynamic routing protocolsover IPsec VPN.

Tunnel mode is requiredbecause:

Transport mode only encrypts the payload, but GRE needs the entireoriginal IP packet encrypted.

Tunnel mode encrypts the entire packet(original + GRE headers), ensuring full encapsulation.

Why is this statement true?

GRE over IPsec must use tunnel modeto fully encapsulate and protect packets.

HCIP-Security References:

Huawei HCIP-Security Guide → GRE over IPsec Configuration

Comprehensive and Detailed Explanation:

Windows system hardening improves security by reducing attack surfaces.

Recommended security measures include:

A. Periodically checking account permissions→ Prevents unauthorized access.

B. Canceling default sharing→ Reduces exposure to remote attacks.

C. Restricting the number of users→ Limits access to essential personnel.

Why is D incorrect?

Changing the default TTL value does not directly enhance system security.

HCIP-Security References:

Huawei HCIP-Security Guide → Windows Hardening Best Practices

Comprehensive and Detailed Explanation:

PBR (Policy-Based Routing)allows traffic to be forwarded based on specific policies.

All options are correctsince Huawei PBR can match:

A→ Source IP address

B→ Source security zone

C→ Source MAC address

D→ Application

HCIP-Security References:

Huawei HCIP-Security Guide → Policy-Based Routing Configuration

Comprehensive and Detailed Explanation:

Quota control policiesregulateuser access and resource usagebased on bandwidth and time constraints.

All options are correctsince Huawei firewalls support:

A→ Restricting the daily online duration.

B→ Restricting the total monthly online traffic.

C→ Restricting the total daily online traffic.

D→ Restricting the total online duration per month.

HCIP-Security References:

Huawei HCIP-Security Guide → User Quota Control Policies

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:

Authentication-free rules allow unauthenticated users to access essential services before login.

The following traffic must be allowed before authentication:

DNS traffic→ Users need to resolve domain names for the Portal page.

Portal page access→ The captive portal must be reachable.

RADIUS server communication→ Users must authenticate via RADIUS.

Why is this statement true?

Without these authentication-free rules, users would be unable to reach thePortal login page.

HCIP-Security References:

Huawei HCIP-Security Guide → Portal Authentication-Free Rules

Comprehensive and Detailed Explanation:

Threshold settings in firewalls allow administrators to define:

Alarm threshold→ When exceeded, logs are generated.

Block threshold→ When exceeded, the action is blocked.

Why is B false?

The alarm threshold does not block traffic; it only generates logs.

Only the block threshold enforces blocking actions.

HCIP-Security References:

Huawei HCIP-Security Guide → HTTP Traffic Control

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:

Eth-Trunk (Ethernet Trunking)aggregates multiplephysical linksinto asingle logical interface, improvingbandwidth and redundancy.

Manual mode limitations:

Manual mode does NOT detect link faults or incorrect connections—it only detects link disconnections.

To detectlink faults,LACP (Link Aggregation Control Protocol) modeis required.

Why is D false?

Manual mode canonly detect link disconnectionsbutnot link faults or incorrect connections.

HCIP-Security References:

Huawei HCIP-Security Guide → Eth-Trunk Configuration

Huawei USG6000 Firewalls Link Aggregation Guide

Comprehensive and Detailed Explanation:

Huawei firewalls come with a built-in URL filtering database, which includes predefined categories such as:

Malicious websites

Phishing sites

Social media

Business services

The URL category database is periodically updated by Huawei, ensuring that new threats are detected automatically.

Why is this statement true?

Administrators do not need to manually load URL categories; they are delivered with the firewall and updated regularly.

HCIP-Security References:

Huawei HCIP-Security Guide → URL Filtering & Web Security