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Huawei H12-891_V1.0-ENU Exam Syllabus Topics:

Huawei HCIE-Datacom V1.0 Sample Questions:

1. Regarding the mpLS handling mode of TTL, is the following description correct?

A) Pipe mode. When an IP message passes through the MPLS network, the IPTTL minus 1 is mapped to the WLSTTL field at the incoming node.
B) The TTL in the MPLS label has the same meaning as the TTL field in the head. TTL prevents mpLS networks from developing bad routing.
C) In MPLSVPI, if you need to hide the structure of the MPLS backbone network, you can use Uniform mode on Ingress for private network messages.
D) Unifore style, when an IP packet passes through the MPLS network, the IPTTL of the incoming node is minus l. The MPLS TTL field is a fixed value.

2. CORRECT TEXT
Regarding the tag space for MPLS, the description is incorrect

A) Above 1024 is the tag space shared by dynamic signaling protocols such as LDP, RSVP-TE, MP-BGP, etc
B) 16-1023 is a label control shared by static LSPs and static CR-LSPs
C) When the penultimate hop LSR performs a label swap, if the swapped tag value is found to be
D) the tag is popped up by default and the message is sent to the last hop

3. Regarding the Stub region and the NSSA region of the OSPF protocol, the following statement is incorrect with a single choice

A) Type7LSA injection is not allowed in the Stub region, while Type7LSA injection is allowed in the NSSA region
B) Both the Stub region and the NSSA region allow injection of Type3 LSA
C) Neither the Stub region nor the NSSA region allows injection of Type4 LSA
D) Type5 LSA injection is not allowed in the Stub region, while Type5LSA injection is allowed in the NSSA region

4. The following statement about IPSG technology is correct (single choice).

A) The IPSG can perform binding table match checks on IP packets entering and leaving the interface.
B) If an interface is configured as the OKCP Scooing Tust interface, the interface can normally receive DHCP ACK and DHCPNAK responded to by the OHHNP server and DHCPOffer packets, other untrusted ports cannot receive these packets properly.
C) On Huawei routers, ipSG functions can be configured in Vlanif.
D) The ip source checkuser-bind check-item command is used to configure VLAN- or interface-based IP packet checks, which take effect for both dynamic and static table entries.

5. Is the following description of the OSPFv3 message correct?

A) The LSR message contains the complete LSA header information for requesting an update to the LSA
B) The LSACK message contains LSA header information to confirm the receipt of LSU packets
C) Hello messages and the Option field for DD messages extends to 24-bit
D) The interface ID of the sending interface must be included in the A Hello packet

Solutions: