Huawei Huawei Certifications H12-891 Questions & Answers

• Question 11:

  The following statement about the OSPFv3 message format is correct?( Multiple select).

  A. There is no change in the option field of the Hello message

  B. Remove the Authentication, Auth Type fields

  C. Hello messages no longer contain address information, carrying Interface lD

  D. The OSPF version number changed from 2 to 3

  Correct Answer: BCD

• Question 12:

  What type of prefix does a router running BGP advertise to its IBGP neighbor (assuming the router is not configured as a route reflector)? (radio).

  A. Prefixes are learned through other IBGP neighbors, or prefixes are learned from EBGP neighbors, or prefixes are learned through routing introduction

  B. A prefix that exists in the routing table

  C. Prefixes are learned through other BGP neighbors, or prefixes are learned locally through network or routing introduction

  D. Prefixes are learned through EBGP neighbors, or prefixes are learned locally through network or routing introduction

  E. The prefix is learned through an EBGP neighbor, or the prefix is learned from an from RR

  Correct Answer: D

• Question 13:

  BGP4+ is running between two routers, and the neighbor relationship is normal, but the BGP routing table of the router on this side does not have a neighbor route entry.

  A. The route entry in the peer BGP route table is non-optimal.

  B. The next hop address of the

  C. BGP route entry is unreachable

  D. Peer ignore is configured on the peer

  E. The peer is configured with active-route-advertise

  Correct Answer: ABD

• Question 14:

  An existing router running OSPF is connected to zone 0 and zone l. You configured zone l as the Stub domain. What classes does an LSA that operates only inside zone l contain?

  A. 1LSA,2 3LSA

  B. 3LSA 4LSA1 2

  C. 1 ?LSA ? 2 ?LSA

  D. 1 ??LSA,2 ??LSA 5 ??LSA

  E. 7 ?LSA

  Correct Answer: A

• Question 15:

  An engineer used 2 routers to test IPv6 services and simulated the interconnection between headquarters and branches by running BGP4+. The network logic topology is shown in the figure, regarding the delivery of IPv6 routes between two devices, which of the following statements is wrong?

  

  A. When a route is passed, it carries a recognized mandatory attribute such as AS_Path

  B. BGP4+ passes routing information between peers via Update packet C. When routing is passed, the Next_Hop attribute must be an IPv6 global unicast address

  C. If the Update message carries the MP_REACH_NLRI attribute, it means that the advertisement is reachable route

  Correct Answer: C

• Question 16:

  NSF (Non-StoppingForwarding) and non-stop circuits are transmitted NSR (Non-Stopping Routing) are two highly reliable solutions, and the following statement is correct

  A. After NSR enablement, if the business batch backup has not yet ended, a master board failure occurs, the NSR cannot be completed

  B. NSR backers require the ability to support NSR through specific message negotiation

  C. After NSF is enabled, the router is switched back, and the routing table and forwarding table remain unchanged, so traffic is not lost during grf time

  D. NSF routers do not need to negotiate the ability to support NSF through specific messages

  Correct Answer: A

• Question 17:

  Based on the configuration shown in the figure below, it can be known that R4 has () interfaces advertised into IS-IS?

  

  A. 2

  B. 3

  C. 1

  D. 0

  Correct Answer: B

• Question 18:

  Which of the following descriptions of MPLS header TTL are correct?

  A. Copy IPTIL value is handled in such a way that the LSR of the MPLS domain is hidden, which plays a certain security role

  B. Can prevent wireless circular forwarding of messages

  C. MPLS has two ways of handling TTL, one is that the IP packet copies the PTTL of the MPLS header hen it enters the MPLS network Value; Another is to set the TTL of the MPLS header to 255 at the entrance LER

  D. When copying TTL is disabled, tracert can see the LSR of the passing MPLS domain

  Correct Answer: BC

• Question 19:

  Assuming that the shaping rate of a port is 10OMbps, the input loans and RIP of P configurations of each service of the interface are as follows: Then after the first round of scheduling, EF How many loans are allocated by the queue?( Single choice questions).

  

  A. A. 30M

  B. 15M

  C. 90M

  D. 25M

  Correct Answer: D

• Question 20:

  A medium-sized campus network manages the network through the SNMP protocol, and the campus is highly network-safe, so which version of SNMP is recommended for management?

  A. SNMPv1 B. SNMPv2C

  B. SNMPV3

  C. All versions are available to implement

  Correct Answer: C