H12-711_V4.0 Exam Dumps - Huawei HCIA-Security Questions and Answers

On a firewall that includes antivirus inspection, the device can take different response actions after it detects malware in traffic (for example, in file transfers, email attachments, or web downloads). Block is a standard antivirus action: the firewall stops the session or drops the infected content to prevent the malicious file from reaching the destination host. Alert (alarm/log) is also a common response action: the firewall generates an event, log, or alarm so administrators can investigate the source, destination, file type, signature name, and policy that triggered the detection.

Some firewall antivirus engines also support content-handling actions such as deleting an attachment (or stripping the infected file/attachment) while allowing the rest of the session to proceed, depending on the protocol and security profile. This is typically used in scenarios like email or file-based protocols where removing the infected payload is feasible.

Declare is not a normal antivirus response action on firewalls; it does not describe a meaningful enforcement or notification behavior. Therefore, the valid antivirus response actions here are Block, Alert, and Delete attachment.

The correct answer is D . In Single Sign-On deployment on Huawei firewalls, the firewall commonly acts as the access control enforcement point , while the actual user authentication is performed by an external or third-party authentication server, such as an LDAP, RADIUS, or other identity system. In this process, the user may enter credentials through the firewall’s Portal page, but the firewall forwards the authentication information to the authentication server rather than locally storing and validating the password itself.

Option A is incorrect because SSO is not based on the firewall storing passwords and independently authenticating users. Option B is also incorrect because it describes a model where the firewall merely records identity and does not participate, while in practice the firewall participates in the access control and authentication interaction workflow. Option C describes an SMS-style verification process, which is not the essential mechanism being tested for SSO here.

Therefore, the correct SSO description is that the firewall receives the credentials, forwards them to a third-party authentication server, and the actual authentication is completed on that server.

Explanation From HCIA-Security documents:

This scenario states two key conditions: (1) there are only a small number of users accessing the Internet, and (2) the number of available public IP addresses is equal to the number of concurrent Internet users. That means the organization has enough public addresses to assign a dedicated public IP to each internal user at the same time. In such a case, the most suitable NAT type is NAT No-PAT, which is also commonly understood as traditional one-to-one address translation (no port translation). The internal source IP is translated to a unique public source IP, and the transport-layer port number is not multiplexed to share a single public IP among many users.

By contrast, NAPT and Easy IP are used when public addresses are scarce, because they translate multiple internal users to one or a few public IP addresses by also translating port numbers (PAT). 3-tuple NAT is a more specific translation method involving matching/translation with additional parameters, but it is not the standard choice described by the given “equal number of public IPs and concurrent users” condition. Therefore, NAT No-PAT is correct.

By default, a firewall’s security policy is mainly used to control unicast traffic between security zones. Unicast packets are the normal one-to-one communication packets exchanged between a single source host and a single destination host. Because most user service traffic, such as web access, file transfer, remote login, and application communication, is carried in unicast form, firewall security policies are primarily designed to inspect and control this type of traffic.

Broadcast packets are typically used for local network discovery or service announcements within the same broadcast domain, and they are not the standard focus of interzone security policy control. Multicast traffic is one-to-many communication and usually requires additional multicast-specific handling or routing mechanisms rather than ordinary default security policy treatment. Anycast is a special addressing and routing method rather than the usual packet-control category emphasized in firewall default policy behavior.

In Huawei firewall policy design, when administrators configure permit or deny rules between zones, those rules are generally intended to manage unicast service traffic . Therefore, among the options listed, the packet type controlled by a firewall’s security policy by default is Unicast .