[Feb 18, 2023] H12-891_V1.0 Practice Exam Dumps - 99% Marks In Huawei Exam
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NEW QUESTION 78
The correct description about the prefix list is:
- A. The prefix list cannot be used for packet filtering
- B. The prefix list is used to filter P prefixes and can match both prefix numbers and prefix lengths
- C. The prefix list can be used to filter packets
- D. The prefix list is used to filter IP prefixes, and cannot match both the prefix number and the prefix length
Answer: A,B
NEW QUESTION 79
The correct description about the BGP reflector is ?( Multiple choice questions).
- A. The route reflector can advertise routes learned from non-clients to all clients
- B. IBGP neighbor relationships need to be fully interconnected without a route reflector. The introduction of route reflectors can reduce the need for full interconnection
- C. The route reflector can advertise routes learned from one client to other clients and non-clients
- D. The route reflector can advertise routes learned from IBGP neighbors to all clients and non-client
Answer: A,B,C
NEW QUESTION 80
The advantages of building a campus network using stacking, clustering technology include which of the following?( Multi-select)
- A. Business disruption time is greatly reduced
- B. Simplifies network management and reduces the complexity of network deployment planning
- C. It can effectively reduce network power consumption
- D. Improved network equipment and link utilization
Answer: A,B,D
NEW QUESTION 81
MQC, like PBR-can only be called under the device's Layer 3 interface.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 82
What are the differences between traffic policing and traffic shaping?
- A. For traffic policing, the usage of the buffer can be adjusted for traffic exceeding the CIR
- B. For traffic shaping, the router caches excess packets until bandwidth is available again
- C. For traffic shaping, it can be over-CIR Traffic adjustment for the usage of the buffer
- D. The token bucket algorithm is used for traffic supervision, and the SPD algorithm is used for traffic shaping
- E. Traffic shaping is applied in the inlet direction and traffic supervision is applied in the outlet direction
Answer: B,C
NEW QUESTION 83
As shown in the topology diagram, all interfaces of the router in the figure are enabled with the ISIS protocol, and the following statement is correct.
- A. If R3's G E0/0/0 interface goes down, R2 becomes the master device
- B. If the RI's Ethernet0/0/0 interface goes down, R2 becomes the master device
- C. If R3's Ethernet0/0/0 interface goes down, then R2 becomes the master device
- D. If the Ri's Ethernet0/0/1 interface goes down, R2 becomes the master device
Answer: A,B,D
NEW QUESTION 84
In a network in MPLSVPN, different CE devices can exchange routing information with the same PE device using different routing protocols, and different CE devices can exchange routing information with the same PE The routing protocols used between devices are independent of each other
- A. True
- B. False
Answer: A
NEW QUESTION 85
Configuration under a certain interface: isis timer hello 5 level-2, the following statement is correct?
- A. The CSNP packet sending interval for this interface Level-2 is 5S
- B. The level-2 hello packet send interval is 5s
- C. The hello packets sent at level-1 and Leve1-2 are both 5s
- D. The hello packets sent at level-1 are sent at 5s interval
Answer: B
NEW QUESTION 86
The following statement about the VXLAN gateway is incorrect?( Single choice questions).
- A. Layer 3 gateway: Used for cross-subnet communication of the VXLAN virtual network and access to external networks.
- B. VXLAN Layer 3 gateways can be divided into centralized gateways and distributed gateways.
- C. Layer 2 gateway and VPN instance binding.
- D. Layer 2 gateway: Used to solve the problem of tenant access to the VXLAN virtual network, and can also be used for subnet communication of the same VXLAN virtual network.
Answer: C
NEW QUESTION 87
In PIM-SM, the description of RP is incorrectly ?
- A. An RP can serve multiple multicast groups at the same time, a multicast group can correspond to multiple RPs
- B. The initial multicast streams for all groups in the shared tree are forwarded to the receiver via RP
- C. RPs can be responsible for the forwarding of several or all multicast groups, and there can be an RP in the network
- D. All members of the group and the multicast sources that send multicast data to the group converge to the unique RP
Answer: A
NEW QUESTION 88
The following description of Link ID, Data, Type, and Metirc in Router-LSA is correct :( Multiple select).
- A. The Link ID represents the local identity of this connection, and the different connection types The Link ID represents different meanings
- B. Data is used to describe additional information for this connection, and different connection types describe different information
- C. Metric describes the overhead of this connection
- D. Type indicates the type of connection
Answer: A,B,C,D
NEW QUESTION 89
What does RT do in MPLS VPN? Multiple choice questions).
- A. Allows the peer CE to decide which VPNv4 routes not to import into a particular VRF
- B. Allows the peer PE to decide which VPNv4 routes to import into a particular VRF
- C. Allows the peer CE to decide which VPNv4 routes to import into a particular VRF
- D. Allows peer PE to decide which VPNv4 routes not to import into a particular VRF
Answer: B,D
NEW QUESTION 90
As shown in the figure, in the context of IPv4 and IPv6, the SEL field in the NET address of isis always takes a value of 00 ?
- A. Wrong
- B. Right
Answer: B
NEW QUESTION 91
The following description of the attributes of BGP is correct?( Single choice questions).
- A. When the BGP Speaker publishes a route learned from an EBGP peer to an IBGP peer, it does not change the next hop attribute of that routing information.
- B. Local_Pref is valid only between EBGP peers and is not advertised to third-party AS.
- C. The AS deficit of the adjacent AS is ranked at the far right of the list of AS_Path in the BGP route entry.
- D. A route can have only one community attribute value.
Answer: A
NEW QUESTION 92
What categories can ACLs be divided into?
- A. Two-layer ACL
- B. Advanced ACLs
- C. Basic ACL
- D. User-defined ACLs
Answer: A,B,C,D
NEW QUESTION 93
The following description of BGP ring protection is correct
- A. BGP routers that are not RR do not announce any updates from the IBGP peer to other IBGP peers
- B. The BGP router does not announce any updates from the EBGP peer to other EBGP peers
- C. Any routing information from the IBGP peer is advertised to the other IBGP peers
- D. , through the AS-path attribute, discard any update information received from the EBGP peer that contains its own AS number in the AS-path attribute
Answer: A,D
NEW QUESTION 94
What are the problems with manually creating static VXLAN tunnels in campus networks? Multi-select
- A. N devices to establish static VXLAN tunnels, you need to manually configure up to N(N-1)/2 tunnels, the amount of configuration is large
- B. Although the static VXLAN tunnel mode can support distributed gateway application scenarios, the configuration workload is large and the configuration adjustment is complex
- C. Static VLAN tunnel also uses related protocols on the control plane, which will cause equipment resource loss
- D. VTEP can only learn remote MAC addresses in a way that relies on data flooding
Answer: A,B,D
NEW QUESTION 95
When configuring the source NAT and having no pat configuration parameters, which of the following statements is true?( Radio)
- A. Only destination IP address translation occurs
- B. Perform destination IP address and destination port translation
- C. Simultaneous source P address and source port translation
- D. Only source P address translation occurs
Answer: D
NEW QUESTION 96
The address resolution feature for NDP in the following description is incorrect?
- A. When sending a neighbor request packet, the source address-is set as the link-local address
- B. of the local interface Two types of ICMPv6 messages,
- C. are used in the address resolution process, neighbor request and neighbor advertisement Address resolution implements the ability to resolve from IPv6 addresses to link-layer addresses
- D. When sending a neighbor request packet, the destination address must be the multicast address of the neighbor's requested node
Answer: A
NEW QUESTION 97
As shown in the figure, SWA, SWB, SWC all run RSTP, GED/O/2 on SWB Ports and GEO/0/1 ports on SWC have a port role of ? Radio
- A. Root port, Designated port
- B. Backup port, root port
- C. Alternative port, Backup port
- D. Backup port, Alternative port
Answer: D
NEW QUESTION 98
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