Practice Free H12-725_V4.0 HCIP-Security V4.0 Exam Exam Questions Answers With Explanation

Comprehensive and Detailed Explanation:

iMaster NCE-Campus functions as multiple authentication servers, including:

Portal Server? For web-based authentication.

RADIUS Server? For centralized authentication and policy enforcement.

HWTACACS Server? For administrative command authorization.

Why is B correct?

iMaster NCE-Campus cannot function as an Active Directory (AD) server.It can integrate with an external AD server but does not replace it.

HCIP-Security References:

Huawei HCIP-Security Guide ? iMaster NCE-Campus Authentication

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

Intrusion Prevention Systems (IPS) in firewalls follow amulti-step processto detect and mitigate threats. The steps occur in a logical sequence:

1??Step 1: Identifies and Parses Application-Layer Protocols

The firewall firstidentifies the protocol being used(e.g., HTTP, FTP, DNS, SMTP).

Parsing the protocol helps the IPS engineunderstand how the data is structuredand what types of attacks might be embedded.

This step is crucial for detectingprotocol-based attackslike SQL injection or cross-site scripting (XSS).

2??Step 2: Reassembles IP Fragments and TCP Flows

Attackers oftensplit malicious payloads across multiple packetsto evade detection.

The firewallreassembles fragmented packets and TCP flowsto reconstruct the full data stream.

This step is critical for detectingevasion techniques such as fragmented attacks or out-of-order packet attacks.

3??Step 3: Performs Signature Matching

Once the full data stream is reassembled, the IPScompares it against known attack signatures.

Signature matching helps detect:

Malware patterns(e.g., botnets, Trojans).

Exploits targeting vulnerabilitiesin software and operating systems.

Firewalls usepredefined signature databasesthat are regularly updated.

4??Step 4: Performs the Response Action Based on the IPS Profile

If an attack is detected, the firewall takes anaction based on the IPS policy:

Block the traffic(drop malicious packets).

Alert the administrator(generate logs and alerts).

Rate-limit traffic(slow down potential attack sources).

Theresponse mechanism is customizablebased on security requirements.

Comprehensive and Detailed Explanation:

A Trojan horse is a type of malware that disguises itself as a legitimate applicationto trick users into installing it.

Transmission methods:

A. Exploiting vulnerabilities? Attackers use system/software vulnerabilities to inject Trojans.

B. Bundled in software? Trojans are included in cracked software or pirated applications.

C. Downloaded from third-party sites? Users unknowingly install malware from untrusted sources.

D. Masquerading as useful software? Fake tools trick users into installation.

Why are all options correct?

All listed methods are common ways Trojans spread.

HCIP-Security References:

Huawei HCIP-Security Guide ? Malware & Trojan Horse Attacks

1. Virtual System ? Services and routes can be isolated.

A virtual system (VS)in Huawei firewalls is afully isolated security instancewithin a single physical firewall.

Each virtual system hasseparate services, routing tables, policies, and security rules, ensuring full isolation between different users or tenants.

2. VPN Instance ? Only route isolation can be implemented.

AVPN instance (VRF - Virtual Routing and Forwarding)providesroute isolationfor different customer networks butdoes not isolate services or security policies.

This is typically used inMPLS VPN deploymentswhere different customers share the same physical device but need isolated routing tables.

3. VPN Instance ? VPN instances are automatically generated.

In someMPLS VPNorSDN-managed networks, VPN instances can beautomatically createdwhen customer configurations are pushed via controllers.

Dynamic routing protocols (e.g., BGP/MPLS VPN) can automatically generateVRF instancesbased on network policies.

4. Virtual System ? An instance needs to be manually created.

Unlike VPN instances,virtual systems must be manually createdby an administrator on the firewall.

Each virtual system functions as acompletely independent firewall, requiring manual configuration ofinterfaces, policies, and routing settings.

Comprehensive and Detailed Explanation:

Bandwidth policies use a hierarchical structure(Parent ? Child).

Child policies must follow parent policiesin terms of bandwidth restrictions.

Why is C false?

A parent and childcan use the same bandwidth profile.

The firewall allowsinheritanceof bandwidth settings.

HCIP-Security References:

Huawei HCIP-Security Guide ? Bandwidth Management and Policy Configuration

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:

DoS (Denial-of-Service)? A single attacker sends excessive traffic to a target.

DDoS (Distributed Denial-of-Service)? Uses multiple compromised devices (zombies or botnets) to amplify the attack.

Why is this statement true?

DDoS attacks originate from multiple sources (botnets), unlike DoS attacks.

HCIP-Security References:

Huawei HCIP-Security Guide ? DoS vs. DDoS Attacks

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

Comprehensive and Detailed Explanation:

Response actions for abnormal file identification in Huawei firewalls include:

A. Alert? Logs the event but does not stop the file.

B. Block? Prevents the file from being accessed or downloaded.

D. Delete? Removes the malicious file before it reaches the user.

Why is C incorrect?

Allowing an identified abnormal file defeats the purpose of security enforcement.

HCIP-Security References:

Huawei HCIP-Security Guide ? File Anomaly Detection & Response

Comprehensive and Detailed Explanation:

Network Access Control (NAC) and AAA work together for secure network access.

Key functions:

A. AAA handles user-to-device authentication.

B. NAC handles device-to-server authentication.

C. NAC supports 802.1X, MAC authentication, and Portal authentication.

D. AAA enforces authentication, authorization, and accounting.

Why are all options correct?

Each option correctly describes a function of NAC or AAA.

HCIP-Security References:

Huawei HCIP-Security Guide ? NAC & AAA Integration

Comprehensive and Detailed Explanation:

Inbound bandwidth= Trafficenteringthe firewall.

Outbound bandwidth= Trafficleavingthe firewall.

Correct answers:B. Public ? Private traffic is controlled by inbound bandwidth.D. Private ? Public traffic is controlled by outbound bandwidth.

HCIP-Security References:

Huawei HCIP-Security Guide ? Firewall Virtual System Bandwidth Control