H12-711_V4.0 Huawei HCIA-Security V4.0 Exam Free Practice Exam Questions (2026 Updated)

In Huawei firewall hot standby and reliability deployment, the VGMP group can operate in several different states that reflect the working role of a device in the backup system. These states are used to identify whether a device is currently forwarding service traffic, waiting as a backup device, balancing traffic, or still in the startup phase.

Initialize refers to the initialization state, in which the VGMP group has not yet fully completed role negotiation or status establishment. Active indicates that the firewall is currently the primary device responsible for forwarding traffic and providing services. Standby means the firewall serves as the backup device, ready to take over if the active device fails. Load-balance is used in scenarios where traffic is distributed between devices according to the load-balancing mechanism rather than relying on only one active forwarding device.

These VGMP status values help administrators understand device roles and cluster behavior during deployment, failover, and service switching. Since all four listed items are recognized VGMP group states in Huawei firewall high availability scenarios, A, B, C, and D are all correct .

Explanation From HCIA-Security documents:

IPsec secures user traffic mainly through the ESP or AH mechanisms, delivering a combination of confidentiality and authentication-related protections. Data encryption (A) provides confidentiality so that intercepted packets cannot be read by unauthorized parties. This is typically delivered by ESP using symmetric encryption algorithms negotiated during IKE.

For authentication, IPsec provides data origin authentication (B) , meaning the receiver can confirm that packets were generated by the expected peer (the holder of the correct IPsec SA and keys). Along with that, IPsec performs a data integrity check (D) so that any modification to the protected portion of a packet in transit is detected; integrity is commonly provided using an HMAC or authenticated encryption method.

Finally, IPsec also includes anti-replay (C) protection. By using sequence numbers and a replay window, the receiver can detect and discard duplicated old packets, which prevents attackers from capturing encrypted/authenticated traffic and retransmitting it to disrupt sessions or attempt misuse.

Because IPsec secure transmission depends on encryption plus authentication, integrity, and replay protection working together, all four options are correct.

Explanation From HCIA-Security documents:

3-tuple NAT is used to publish internal services to external users by translating destination IP address, destination port, and protocol so that an Internet user can reach an intranet server using a public address and specific service port. So the first part of the statement about enabling proactive external access through translated addresses and ports matches what 3-tuple NAT is used for.

However, NAT translation and firewall access control are two different functions. NAT only defines how addresses and ports are translated; it does not replace the firewall’s security policy decision. On a Huawei firewall, whether a packet is allowed to pass is determined by the configured security policy (interzone policy). If no relevant security policy exists to permit the traffic from the external zone to the internal zone and the mapped service, the firewall will not automatically allow it just because a NAT mapping is present.

Therefore, without an appropriate permit security policy, the access packets will be denied even if 3-tuple NAT is configured.

Explanation From HCIA-Security documents:

In ESP transport mode, the authentication function provides data integrity and origin authentication for specific parts of the IP packet. The authentication calculation covers the ESP header, TCP/UDP header, user data, and ESP tail (including padding, Pad Length, and Next Header fields) . However, it does not include the outer IP header, because some IP header fields (such as TTL) may change during packet forwarding. It also does not include the ESP Authentication Data field itself, since that field stores the integrity check value result of the calculation.

In the diagram, range 3 correctly represents the portion starting from the ESP header up to the ESP tail, excluding the IP header and excluding the ESP Authentication Data field.

Range 1 only covers part of the payload, range 2 does not include the ESP header, and range 4 incorrectly includes the IP header. Therefore, option 3 accurately describes the authentication scope of ESP in transport mode.

A firewall is primarily a boundary security device used to control traffic between networks of different trust levels, such as an intranet and an extranet or the Internet. Its key capability is enforcing access control based on security policies, which helps prevent unauthorized traffic and information flows from less trusted networks into more trusted ones. That is why statement B is correct: by applying security policies, the firewall can block unauthorized access attempts and prevent unapproved data from the extranet reaching intranet resources.

The other statements are incorrect because they overstate firewall capabilities. A firewall alone cannot guarantee protection against zero-day vulnerabilities, because zero-days may not match known signatures or rule patterns, and prevention often requires multiple layers such as endpoint hardening, behavioral detection, and timely patching. It also cannot defend against all external threats, since attacks can bypass controls through encrypted traffic, insider misuse, misconfigurations, or compromised endpoints. Even if a firewall supports antivirus features, it does not replace endpoint and network antivirus deployment; layered security is still required.

This statement is TRUE . HTTPS is essentially HTTP running over TLS . While HTTP by itself transmits data in plaintext, HTTPS adds the TLS security layer to protect communication between the client and the server. By introducing TLS, HTTPS provides three important security functions during transmission.

First, it provides identity authentication . The server proves its identity to the client through a digital certificate , helping the client confirm that it is communicating with the legitimate server rather than an attacker. Second, HTTPS provides encryption . After the TLS negotiation process is completed, the transmitted HTTP data is encrypted, preventing attackers from easily reading sensitive information such as usernames, passwords, and session data. Third, HTTPS ensures data integrity . TLS includes mechanisms to detect whether transmitted data has been modified during communication.

Because of these features, HTTPS is widely used for secure web access, online transactions, authentication pages, and confidential information exchange. Therefore, the statement that HTTPS introduces the TLS layer based on HTTP to provide authentication, encryption, and integrity protection is correct.

Explanation From HCIA-Security documents:

PKI is designed to solve trust and security problems in digital communications by using certificates, public/private keys, and signature mechanisms. It helps parties verify each other’s identities through certificate-based authentication, so B is a classic problem PKI addresses. PKI also enables secure key distribution and supports security protocols that provide confidentiality and integrity , which helps protect data against eavesdropping and tampering during transmission, so C is also within PKI’s scope. In addition, PKI supports digital signatures and non-repudiation-style evidence, which can replace or supplement paper receipts by creating verifiable transaction records, making D something PKI can help with in electronic transactions.

However, network congestion and service degradation due to heavy traffic (A) is a performance and capacity issue. PKI does not reduce traffic load, increase bandwidth, optimize routing, or fix server resource bottlenecks. Those problems are handled through network engineering measures such as QoS, scaling, load balancing, and capacity planning—not by PKI. Therefore, the correct answer is A .