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HCIP-Datacom-Core Technology (Huawei H12-821) Sample Questions and Answers? | SPOTO

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Question #1
In SSM, which version of IGMP needs to be used?
A. IGMPv1
B. IGMPv3correct
C. IGMPv2
D. IGMPv4
View answer
Correct Answer: B
Question #2
Regarding the description of the summary automatic command and BGP aggregation, which is wrong?
A. This command is used to implement automatic aggregation, and its priority is higher than manual aggregationcorrect
B. After configuring this command, BGP will aggregate routes according to natural network segments
C. This command is used to enable automatic aggregation of locally imported routes
D. After configuring this command, BGP only sends the aggregated route to the peer
View answer
Correct Answer: A
Question #3
Which of the following tools is used to filter routing information and set routing attributes for filtered routing information?
A. route-policycorrect
B. as-path-filter
C. policy-based-route
D. IP-prefix
View answer
Correct Answer: A
Question #4
Which of the following descriptions about OSPF route aggregation is incorrect?
A. Any router in OSPF can perform route aggregation operations
B. OSPF has two route aggregation methods: ABR aggregation and ASBR aggregation
C. Route aggregation refers to aggregating routing information with the same prefix and publishing only one route to other areas
D. Through route aggregation, routing information can be reduced, thereby reducing the size of the routing table and improving router performance
View answer
Correct Answer: A
Question #5
What are the key components of building an IP wide-area bearer network solution together with Huawei NetEngine intelligent routers?
A. iMaster NCE-Fabric
B. iMaster NCE-IP
C. iMaster NCE-Campus
D. iMaster NCE-WANcorrect
View answer
Correct Answer: D
Question #6
Regarding the description of IGMP Snooping-working mechanism, which is the correct?
A. The layer 2 switch establishes and maintains the PIM routing table on the layer 2 by continuously monitoring IGMP messages
B. When IGMP Snooping is not running, the multicast message will be broadcast on the second layer
C. If the host sends an IGMP leave message, the switch will add the host to the corresponding multicast table
D. If the host sends an IGMP host report message, the switch will delete the multicast entry corresponding to the hos
View answer
Correct Answer: B
Question #7
When using authentication in BGP configuration, how should it be configured?
A. A pair of BGP peers must use the same MD5 passwordcorrect
B. All routers in the AS must use the same password
C. All BGP peers on a router must use the same password
D. All routers in the same AS must use the same password
View answer
Correct Answer: A
Question #8
Which of the following description of OSPF neighbor relationship and adjacency relationship is correct?
A. The adjacency relationship is maintained by OSPF DD packets
B. OSPF routers must establish an adjacency before exchanging Hello packets
C. The neighbor relationship is selected from the adjacency relationship and formed to exchange routing information
D. Not all neighbor relationships can be adjacenciescorrect
View answer
Correct Answer: D
Question #9
Which of the following IEEE 802.11 standards is also known as Wi-Fi 6?
A. 02
B. 02
C. 02
D. 02
View answer
Correct Answer: D
Question #10
Which of the following tools is used to filter routing information and set routing attributes for filtered routing information?
A. route-policycorrect
B. as-path-filter
C. policy-based-route
D. IP-prefix
View answer
Correct Answer: A
Question #11
Which of the following statement regarding the display ospf peer command output is true?
A. Address: 10
B. Through negotiation during DD packet exchange, the local end becomes the slave
C. Router ID indicates that the local router ID Is 10
D. The DR address is 10
View answer
Correct Answer: A
Question #12
Which of the following is not the main function of NDP?
A. Path MTU Discoverycorrect
B. Neighbor Status Tracking
C. Duplicate address detection
D. Address
View answer
Correct Answer: A
Question #13
Regarding the ABR in OSPF, which is the wrong description?
A. ABR cannot generate Type 3, Type 4, and Type 5 LSAscorrect
B. Convert the Type 1 and Type 2 LSAs in the connected non-bone thousand areas into Type 3 LSAs and publish them to the backbone area
C. The Type 1, Type 2, and Type 3 LSAs in the backbone area of ??the ABR grid are converted into Type 3 LSAs and advertised to the connected non-bone thousand areas
D. There are multiple LSDBs on the ABR, and the ABR maintains an LSDB for each area
View answer
Correct Answer: A
Question #14
As shown in the figure, the forwarding of data traffic before roaming is STA-HAP-upper layer network, the forwarding method is direct forwarding, and the home agent is configured on the AP. After three-layer roaming, what is the direction of data forwarding traffic?
A. STA-FAP-FAC-HAC-HAP-Upper Networkcorrect
B. STA-FAP-FAC-HAC-Upper Network
C. STA-FAP-FAC-Upper Network
D. STA-FAP-FAC-HAC-HAP-HAC-Upper Network
View answer
Correct Answer: A
Question #15
What is the minimum total length of the address in IS-IS Byte?
A. 2
B. 8correct
C. 20
D. 16
View answer
Correct Answer: B
Question #16
The RSTP protocol provides a variety of protection functions. For example, when the edge terminal port is configured in the protection state, the processing method of the edge port after receiving the BPDU message is:
A. Forward BPDU messages as required
B. Obtain relevant information after the BPDU message
C. Close the portcorrect
D. Directly discard the BPDUmessage
View answer
Correct Answer: C
Question #17
By default, on a router running IS-IS in a broadcast network, how many seconds does DIS send CSNP messages?
A. 10correct
B. 3
C. 30
D. 40
View answer
Correct Answer: A
Question #18
In the IS-IS broadcast network, which multicast MAC address does the Level-1 router use as the destination address for sending IIH?
A. 0180-c200-0000
B. 0180-c200-0015
C. 0100-5E00-0001
D. 0180-c200-0014correct
View answer
Correct Answer: D
Question #19
On an OSPF network, an algorithm is used to prevent loops within an area, but loops may occur between areas. Therefore, OSPF defines a loop prevention mechanism for inter-area routes. Which of the following statements are true about the loop prevention mechanism?
A. AInter-area routes cannot be directly transmitted between non-backbone areas
B. BAll non-backbone areas must be directly connected to area 0
C. CInter-area routes need to be forwarded through area 0
D. DAn ABR cannot inject Type 3 LSAs that describe routes to a network segment in an area back to the same area
View answer
Correct Answer: ABCD
Question #20
Which of the following statements about a DHCP server on a large-scale Layer 3 WLAN are false? (Choose all that apply.)
A. Ps can obtain the AC’s IP address from a DHCP server using Option 43
B. Ps can obtain the AC’s IP address from a DHCP server using Option 60
C. n independent DHCP server is recommended
D. he AC is recommended as a DHCP server
View answer
Correct Answer: BD
Question #21
The output information of a router is below, which is correct about this information?
A. The MED value of the route to the destination network 5
B. The MED value of the route to the destination network 1
C. The next hop of the route to the target network 5
D. The next hop of the route to the target network 1
View answer
Correct Answer: C
Question #22
Regarding the description of the routing tool, which of the following statement is wrong?
A. route-policy can only match routes and data packets, and cannot be used to modify routing attributes or data packet forwarding behaviorcorrect
B. Prefix list (ip-prefix) matching object is the destination address of routing information
C. The access control list (ACL) is used to match the IP routing information or the address of the data packet
D. as-path-filter is used to match the AS-PATH attribute in BGP routing information, so it can only be used to filter BGP routes
View answer
Correct Answer: A
Question #23
Which of the following descriptions about OSPF route aggregation is incorrect?
A. Any router in OSPF can perform route aggregation operations
B. OSPF has two route aggregation methods: ABR aggregation and ASBR aggregation
C. Route aggregation refers to aggregating routing information with the same prefix and publishing only one route to other areas
D. Through route aggregation, routing information can be reduced, thereby reducing the size of the routing table and improving router performance
View answer
Correct Answer: A
Question #24
Which of the description about IBGP neighbors and EBGP neighbors is wrong?
A. If two peers exchanging BGP packets belong to different autonomous systems, then these two peers are EBGP peers
B. If two peers exchanging BGP packets belong to the same autonomous system, then these two peers are IBGP peers
C. IBGP peers must be directly connected physicallycorrect
D. Two routers running BGP must have IP connectivity to establish a TCP session
View answer
Correct Answer: C
Question #25
Which of the following statements about the address used by AC to establish a CAPWAP tunnel in VRRP hot backup is correct?
A. The physical address of the primary AC
B. The physical address of the standby MC
C. Any address configured in the AC is fine
D. VRRP virtual addresses of the active and standby ACscorrect
View answer
Correct Answer: D
Question #26
Which of the following statements about OSPF protocol packets is wrong?
A. The header format of all OSPF packets is the same
B. All OSPF packet headers carry the Router-ID field
C. The OSPF protocol uses five types of packets to complete the transfer of routing information
D. OSPF packets are encapsulated in UDP packets, and the port number is 89correct
View answer
Correct Answer: D
Question #27
Which of the following statement regarding the display ospf peer command output is true?
A. Address: 10
B. Through negotiation during DD packet exchange, the local end becomes the slave
C. Router ID indicates that the local router ID Is 10
D. The DR address is 10
View answer
Correct Answer: A
Question #28
A certain router runs IS-IS, and its output information is shown in the figure. Which of the following statements is correct?
A. The cycle of sending llH on the s4/0/0 interface is 30s
B. The circuit-level1 of the s4/0/0 interface is Level-1correct
C. The Cost value of the s4/0/0 interface is 20
D. The s4/0/0 interface supports IPv6
View answer
Correct Answer: B
Question #29
The MAC address of a certain PC is 5489-98FB-65D8. The administrator wants this PC to obtain the specified IP address 192.168.1.11/24 from the DHCP server, so the command configured by the administrator should be?
A. dhcp static-bind ip-address 192
B. dhcp server static-bind ip-address 192
C. dhcp server static-bind ip-address 192
D. dhcp static-bind ip-address 192
View answer
Correct Answer: B
Question #30
Compared with routers and switching machines, what is the unique forwarding module of the firewall?
A. Switch fabric board
B. MPU
C. LPU
D. SPUcorrect
View answer
Correct Answer: D

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