Free May-2023 UPDATED Huawei H12-891_V1.0-ENU Certification Exam Dumps is Online
Huawei Exam 2023 H12-891_V1.0-ENU Dumps Updated Questions
NEW QUESTION # 122
Regarding the description of the encapsulation format of the labels in MPLS, the correct one is?
- A. The TTL field in the label has a similar meaning to the TTL (Time To Live) in the IP packet, and also has the effect of preventing loops
- B. label in the S field, lbit Used to identify whether the label is a bottom label, and a value of 1 indicates that it is the penultimate label
- C. The total length of an MPLS single tag is 4 bytes (32 bits).
- D. For Ethernet, PPP packets, the tag stack is like a "cushion layer", located between the layer 2 header and the data, and when there is a VLAN tag, the MPLS header is placed on the Ether head and VLANtag between
Answer: A,C
NEW QUESTION # 123
Regarding the description of the security level of the configured firewall security zone, the error is?
- A. Two security zones are not allowed to configure the same security level in the same system
- B. You can only set the security level for a custom security zone
- C. Once the security level is set, it is not allowed to change
- D. For newly created security zones, the system defaults to a security level of 1
Answer: D
NEW QUESTION # 124
The Option field in OSPFv3 appears in all LSAs
- A. False
- B. True
Answer: A
NEW QUESTION # 125
?? Route? Policy??:ip community-filter Ipermit 100: 1 ip as-path-filter 2 permit ^I00$ route-policy test permit node 10 if-match communityfilter 1 if-match as-path-filter 2 apply as-path 200 Is the above configuration description correct?
- A. The BGP route matches the above only if the BGP route carries a community attribute value of 100:1 or if the AS PATH is 100 route one policy. The AS-one PATH attribute that matches the route is changed to 200
- B. The BGP route matches the above only if the BGP route carries a community attribute value of 100:1 and the AS-One PATH is 100 route policy?. The AS-PATH nature of the matching route is changed to 200
- C. Only if the BGP route carries an AS-PATH of 100, the BGP route matches the route one policy above. The AS-one PATH attribute that matches the route is changed to 200
- D. As long as the BGP route carries a community attribute value of 100:1, the BGP route matches the route-policy above. The AS-PATH attribute of the matching route is changed to 200
Answer: B
NEW QUESTION # 126
As shown below, what routes will R2 learn? (Single choice questions).
- A. R2 can learn all routes to R1.
- B. R2 can learn the 101.1.0/24 route.
- C. R2 can receive an LSP for R1, but cannot join to the routing table.
- D. R2 can learn the 101.20/24 and 101.30/24 routes.
Answer: A
NEW QUESTION # 127
The link quality of a company's network is poor, often failures lead to route oscillation, and even occasionally there are routing loops, in order to prevent the recurrence of these phenomena, the network administrator decided to deploy URPF in the whole network to improve the stability of the network
- A. False
- B. True
Answer: B
NEW QUESTION # 128
IGMP SSMMapping is bound to multicast through a static multicast source, so that members of IGMPv1 and IGMP2 can also access the SSM multicast network. The following statement about IGMPSSMMapping is wrong? (Radio).
- A. IGMP hosts can make SSM services run IGMPv3 on the multicast router socket connected to the network segment where the member host is located
- B. The multicast address of the SSM is 232000~232255255255
- C. IGMP SSM Mapping does not process reporting messages from IGMPv3 In order to ensure that the same network segment runs any version
- D. If the IGMP SSM Mapping feature is not enabled, neither IGMPv1 nor IGMPv2 supports multicast for deploying SSM modules
Answer: C
NEW QUESTION # 129
Regarding the DSCP field, the following statement is incorrect: single selection
- A. DSCP divides data into 8 priorities.
- B. In addition to indicating the priority of the data, DSCP can also indicate the probability of data being discarded. The CS class in
- C. When the value of DSCP is EF, it indicates that the data belongs to the accelerated forwarding class.
- D. The DSCP value can be 0, and packets use the default forwarding mechanism when 0
Answer: C
NEW QUESTION # 130
What are the benefits of using WRED? (Multi-select)
- A. Provides a small bandwidth guarantee
- B. Provides some low latency
- C. Avoid congestion completely
- D. Avoid TCP global synchronization
- E. Can avoid UDP occupying most of the bandwidth when congested
Answer: C
NEW QUESTION # 131
As shown in the figure, a company sets up an OSPF network. The links in the figure all form OSPF adjacencies, and all OSFP devices declare their own loopback addresses. One day SIR2. The two links of the S2AR1 suddenly failed, and in order to detect if the network was operating properly, the engineers performed a device status check, which is correct as described below
- A. R3 can not learn the loopback route to R2
- B. R5 can normally learn the loopback route to R2
- C. R1 can normally learn the loopback route
- D. R3 of R2. The loopback route of R2 can be learned normally
Answer: A,B
NEW QUESTION # 132
One of the things you're doing is compressing the length of ip6 addresses as much as possible . The existing IP6 address is
2013xX0C130F006009cO87641308, to be able to make this P6 address more concise, you can compress the IP6 address into which of the following? (Single choice questions).
- A. 213::13F::9C:876Answer 13B
- B. 2013:0:130F::9CO:876 Answer 130B
- C. 2013:0:130F:0:0:9CO:876 Answer 130B
- D. 2013:0:130F:0:0:09CO:876 Answer 130B
- E. 2013:130F::9CO:876 Answer 130B
Answer: B
NEW QUESTION # 133
The following statement about the concept of multicast is wrong?
- A. Multicast Source: The sender of the message needs to join the multicast group to provide forwarding of multicast group messages
- B. Multicast router: A router or layer-three switch that supports layer-3 multicast functionality
- C. Multicast Groups: A collection identified by ip multicast addresses
- D. Multicast Group Members: Multicast group members can be widely distributed anywhere in the network
Answer: A
NEW QUESTION # 134
In the following topology diagram,
R1 can be established between R2 and R3 fetches the Internet, RI and R2, R1 and R3 EGP connections, R2, R3 belong to the same AS. The default routes are issued through BGP separately, requiring R2 to be preferred for traffic accessed by RI to the Internet, and the following practices can be achieved
- A. R1 specifies that peer R3 sets the MED property to 150 in the import direction
- B. R2 specifies that peer R1 is in export. The direction setting local priority is 150
- C. R1 specifies the peer R2 sets the local priority in the import direction to 150
- D. R2 specifies peer R1 in the export direction setting MED property to 150
Answer: A,C
NEW QUESTION # 135
The following statement about RSTP root protection is correct?
- A. It is recommended that you turn it on on a switch that is at the edge of the network
- B. After opening the root-protected port and receiving the RSTBPDU with a higher priority, if it does not continue to receive the RSTBPDU with a higher priority for a period of time, it will return to the normal forwarding state
- C. The port that turns on the root protection receives the RST BDPU with a higher priority and will enter the error-down state
- D. Turning on root protection on the root port takes effect
Answer: A,B
NEW QUESTION # 136
Vxlan is based on UDP encapsulation, which encapsulates Ethernet data frames on top of UDP in IP packets, so it is called MAC in UDP encapsulation
- A. False
- B. True
Answer: B
NEW QUESTION # 137
If there are multiple recipients in a multicast group, the administrator enables the IGMP-Snooping function on the switch connecting the recipient, and when the receiver receives the universal group query packet of the queryer from the switch, how should multiple recipients respond?
- A. All recipients will respond to Report messages only if ICMPV2 is running.
- B. The first recipient whose response time time expires sends the Report message, the other receivers do not.
- C. All recipients will respond to the Report message only if IGMPvl is running.
- D. All recipients will respond to the Report message
Answer: D
NEW QUESTION # 138
The correct description about the prefix list is:
- A. The prefix list is used to filter P prefixes and can match both prefix numbers and prefix lengths
- B. The prefix list can be used to filter packets
- C. The prefix list is used to filter IP prefixes, and cannot match both the prefix number and the prefix length
- D. The prefix list cannot be used for packet filtering
Answer: A,D
NEW QUESTION # 139
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The HCIE-Datacom V1.0 exam covers a wide range of topics including network design, network architecture, network security, network management, virtualization technologies, network protocols, and more. The exam is conducted in a written format and consists of multiple-choice questions, case studies, and simulation questions. The total duration of the exam is eight hours, and candidates must score a minimum of 600 points to pass the exam.
Huawei Certified H12-891_V1.0-ENU Dumps Questions Valid H12-891_V1.0-ENU Materials: https://examcollection.prep4sureguide.com/H12-891_V1.0-ENU-prep4sure-exam-guide.html