Huawei Huawei Certifications H12-891 Questions & Answers

• Question 411:

  D Class IP address range 239000-239255255,What does 255 do? Radio

  A. SSM multicast address, the multicast address segment is valid for the whole network

  B. Any legitimate multicast traffic and multicast application can adopt this address

  C. Locally managed multicast address, which is valid only locally

  D. Link-local multicast address, where traffic that uses that address includes network control messages and that address range is only the multicast address segment used by the E. routing protocol

  Correct Answer: C

• Question 412:

  You need to access the subnets of different VPNs in the VXLAN network , such as information about one

  subnet

  Bottom: RT=10:1ORT.100:1000 Export 1000 in EVPN instance and RT-100-100 in VPN instance.

  Which of the following can be basketed for another subnet?

  A. All EVPN instances are 1000:1000

  B. In VPN instances, it is 10:10

  C. 1000:1000 appears in VPN instances

  D. EVPN implements 1000:1000 export

  Correct Answer: CD

• Question 413:

  BGP can only automatically aggregate routes whose source is Incomplete.

  A. True

  B. False

  Correct Answer: A

• Question 414:

  Which is the correct description of optimal routing election for each protocol in the following options? ( Radio).

  A. Route entries in BGP that are unreachable for the next hop are also placed in the IP routing table.

  B. In the BGP protocol, the best route to reach the same destination circumference is selected by comparing the cost values of the route entries.

  C. The OSPF protocol puts all the routing information in the LSDB into the IP routing table.

  D. From BGP and OSPF, different route entries to reach the same destination segment are learned, and the optimal route is selected to join the IP route table by comparing the protocol's preference value .

  Correct Answer: D

• Question 415:

  ISIS does not send CSNP packets under the P2P network type during the neighbor establishment process.

  A. True

  B. False

  Correct Answer: B

• Question 416:

  The network administrator is ready to use the 6to4 automatic tunnel to carry IPv6 data on the IPv4 network, and the IPv4 address of the router interface is 1381485210, so the corresponding tunnel address is 2001:8a0e:55d2:1:230:65ff:fe2:9a6?

  A. True

  B. False

  Correct Answer: B

• Question 417:

  View the IGMP configuration of the interface on the router RTA as follows, and the information about the operation of the RTA is incorrect

  

  A. The packet interval for a particular group query is 60 seconds

  B. The interface IP address is 1921681.1

  C. The maximum response time for query messages is 10 seconds

  D. The IGMP protocol version is 2

  Correct Answer: A

• Question 418:

  Regarding BGP MED, which of the following descriptions is correct?

  A. In the BGP routing rules, MED has a lower priority than AS Path, Praferred-value, Local- Preference, etc Origin

  B. The default value for the B. BGP routing MED is 0

  C. By default, if there is no MED value in the route attribute, it is processed by 0 If the bestroute mednone-as-maximum command is configured, MED is processed as the maximum 4294967295

  D. By default, BGP routing rules can MED comparison of routes from different autonomous systems

  Correct Answer: ABC

• Question 419:

  There is no routing protocol running on the router HW and only one default route reaches the remote network. On the router job with the extension Ping remote file server address 105401. The result of Ping on the router job is presented as "Request time." out"? Based on the above description, the error in the following analysis is ?

  A. Router HW's next hop router does not have a path to the destination address

  B. Ping is successful, but congestion occurs on the path to the destination address

  C. ICMP packets can reach the destination address But the destination device failed to reply

  D. Router HW does not have a legitimate route to the destination address

  E. There is a firewall in the remote destination network, and no ICMP traffic is allowed

  Correct Answer: A

• Question 420:

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

  A. 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.

  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 IPSG can perform binding table match checks on IP packets entering and leaving the interface.

  Correct Answer: B