Huawei H12-821_V1.0 Exam Practice Test Instant Access

Question 1

ASPF enables the firewall to support multi-channel protocols such as FTP and to define security policies for complex applications.

ATRUE

BFALSE

Answer : A

Application Specific Packet Filtering (ASPF) is a feature that allows the firewall to understand and handle multi-channel protocols such as FTP, H.323, and SIP. ASPF inspects the control channel to dynamically create temporary rules for the data channels, enabling the firewall to secure and manage complex application protocols. This feature ensures that appropriate security policies are applied to these multi-channel applications .

Question 2

As shown in the figure, the stateful inspection firewall forwards the packet because the packet matches the session status of the firewall.

ATRUE

BFALSE

Answer : A

A stateful inspection firewall tracks the state of active connections. If a packet matches an existing session in the firewall's state table, it is allowed to pass. The diagram indicates that the TCP packet matches the session state, so the firewall forwards it .

Question 3

Which of the following protocols are multi-channel protocols?

AH.323

BFTP

CTelnet

DSMTP

Answer : A, B

Multi-channel protocols such as H.323 and FTP use separate control and data channels. H.323 uses different channels for call signaling and media streaming, while FTP uses a control channel for commands and a data channel for file transfers. Telnet and SMTP are single-channel protocols .

Question 4

A firewall receives a packet that PC1 sends to PC2. Which of the following statements are true?

AThe packet does not match any security policy.

BThe packet matches security policy rule 1, and the firewall forwards the packet.

CNo source or destination security zone is specified in security policy rule 2, indicating that any security zone is a match.

DThe packet matches security policy rule 1, and the firewall discards the packet.

Answer : B

The security policy specifies that traffic originating from 12.1.1.2 and destined for the untrust zone is permitted. Since the source address of the packet (12.1.1.1) does not match this rule, the packet matches the default implicit deny rule. However, rule 1 does not deny all other traffic explicitly, so the packet is forwarded based on further configurations .

Question 5

Compress the 2001:0DB8:0000:C030:0000:0000:09A0 address.

A2001:DB8:0:C030::9A0

Answer : A

To compress the IPv6 address 2001:0DB8:0000:C030:0000:0000:09A0, the following rules are applied:

Remove leading zeros in each hextet (e.g., 0DB8 becomes DB8).

Replace contiguous blocks of zeros with :: (only once in the address).

Thus, the compressed form is 2001:DB8:0:C030::9A0 .

Question 6

ICMPv6 messages are classified as error or informational messages.

ATRUE

BFALSE

Answer : A

ICMPv6 messages are classified into two types: error messages (e.g., Destination Unreachable, Time Exceeded) and informational messages (e.g., Echo Request, Echo Reply). This classification is fundamental to ICMPv6's operation .

Question 7

Which three transmission modes are supported for IPv4 packets?

AAnycast

BBroadcast

CUnicast

DMulticast

Answer : B, C, D

IPv4 supports three main transmission modes:

Unicast: One-to-one communication.

Broadcast: One-to-all communication within a network.

Multicast: One-to-many communication to a group of interested receivers.

Anycast is not a native IPv4 mode but is introduced in IPv6 .

Huawei H12-821_V1.0 HCIP-Datacom-Core Technology V1.0 Exam Practice Test