HCIP-Datacom-Core Technology V1.0 H12-821_V1.0 Dumps

dumps2021-12-08T06:07:05+08:00

HCIP-Datacom-Core Technology V1.0 H12-821_V1.0 exam is easy to pass now. There are 60 questions in real Huawei H12-821_V1.0 exam, and you have 90 minutes to finish all the questions. The required passing score of Huawei H12-821_V1.0 exam is 600. The exam languages are Chinese and English. The exam format is Single-answer Qusetion, Multiple-answer Question, True or false, Short Response Item, Drag and Drop Item. Free Huawei certification H12-821_V1.0 exam dumps are available below.

Page 1 of 14

1. The advantages of address translation technology do not include:

Address translation can enable internal network users (private IP addresses) to access the same Internet

Address translation can shield users on the internal network and improve the security of the internal network

Address translation can make many hosts in the internal LAN share a IP address to access the Internet

Address translation can handle the case of IP header encryption

2. Please compress the address 2001:ODB8;0000:C030;0000:0000:09A0:CDEF. (If there are letters in the answer, please use uppercase format)

3. OSPF supports area authentication and interface authentication. If both authentication methods are configured at the same time, interface authentication is better than area authentication.

TRUE

FALSE

4. In the BGP routing rules, the route with the higher Local_Pref value is preferred.

TRUE

FALSE

5. In the network shown in the figure, the R1 device is configured with route penetration, then the R1 device sends the LSP of Leve1-2 to R3, so that R3 can learn the entire network route.

True

False

6. Which of the following OSPF areas can only reach other areas through the default route?

Backbone area

totally stub area

NSSA

Non-backbone area

7. In PIM-SM, which of the following description about RP is wrong?

The initial multicast stream of all groups in the shared tree is forwarded to the receiver through the RP

One RP can support multiple multicast services at the same time, and one multicast group can correspond to multiple RPs

RP can be responsible for the forwarding of several or all multicast groups, and there can be one RP in the network

All members of the group and multicast sources that send multicast data to the group converge to a unique RP

8. Regarding the description of the summary automatic command and BGP aggregation, which of the following is incorrect?

This command is used to realize automatic aggregation, and its priority is higher than manual aggregation

After configuring this command, BGP will aggregate routes according to natural network segments

This command is used to enable automatic aggregation of locally imported routes

After configuring this command, BGP only sends aggregated routes to the peer

9. Using the authentication in BGP configuration, how to configure?

The same MD5 password must be used between a pair of BGP peers

All routers in the AS must use the same password

All BGP peers on a router must use the same password

All routers in the same AS must use the same password

10. Which of the following dynamic routing protocols can be applied to IPv6 networks? (Multiple choice)

Is-ls

BGP6

IS-ISv6

OSPFv3

Page 2 of 14

11. What are the routing tools that are not only used for the BGP routing protocol? (Multiple choice)

as-path-filter

ACL

IP-Prefix

community-filter

12. After dividing an interface of the firewall into the Untrust security zone, the interface belongs to the Untrust zone and no longer belongs to the Local zone

TRUE

FALSE

13. Which routes in the following options meet the following ACL conditions? (Multiple choice)

10.1.1.1/32

10.1.2.1/32

10.1.3.1/32

10.1.4.1/32

14. Please match the following BGP messages with their functions. (Multiple choice)

Announce and revoke BGP routes

Negotiate BGP peer parameters

Maintain BGP peer relationship

Report wrong information and terminate the peer relationship

15. As shown in the figure, the output information of R1 is as follows, and the Router ID of the neighboring router of R1 is ()

16. The MQC traffic behavior supports multiple actions on messages. Please match the actions of the following MQC traffic behaviors with their functions.

17. Which of the following IEEE 802.11 standards corresponds to Wi-Fi 6?

802.11ac

802.11b

802.11n

802.11ax

18. The session-based state detection firewall has different processing procedures for the first packet and subsequent packets. Which of the following descriptions is correct? (Multiple choice)

When the status check mechanism is turned on, subsequent packages also need to be checked for security policies

When a packet arrives at the firewall, it will look up the session table. If there is no match, the firewall will perform the first packet processing flow

When the stateful inspection mechanism is turned on, when the firewall processes TCP packets, only SYN packets can establish a session

When a packet arrives at the firewall, it will look up the session table. If it matches, the firewall will perform subsequent packet processing procedures

19. Add the interface GE1/0/1 to the trusts security zone on the Huawei firewall. At this time, the GE1/0/1 interface belongs to the () security zone. (All lowercase)

20. Which description is wrong about the BGP Keepalive message?

Keepalive is periodically sent between two BGP neighbors

Keepalive messages are mainly used to confirm the operating status of peer routers and the availability of links

Keepalive message contains only one BGP data header

By default, the keepalive interval is 180s

Page 3 of 14

21. Which of the following descriptions are correct about two-tier roaming and three-tier roaming? (Multiple choice)

If the VLAN ID associated before and after the STA is the same when roaming, it must belong to Layer 2 roaming

Layer 2 roaming means that the client roams in the same subnet

Three-tier roaming means that the client roams between different subnets

The VLANs on the AP service set associated with the STA before and after Layer 3 roaming must be the same

22. Modify which of the following parameters, IS-IS neighbor relationship needs to be re-established? (Multiple choice)

Modify the cost value of the IS-IS interface

Modify the IF address of the IS-IS interface

Modify the level of the IS-IS interface

Modify the sending interval of llH on the IS-IS interface

23. When OSPF runs in a broadcast network, DR and BDR need to be elected.

Then in which of the following statements will DR and BDR elections be conducted?

2-way status

Exchange status

Full state

Init status

24. In the network shown in the figure, R1 and R2 run IS-IS and establish an adjacency relationship. The Loopback0 interface of R2 enables IS-IS, and the Loopback3 interface of R2 does not enable IS-IS. Do as follows in the IS-IS process of R2 the configuration shown in figure, which of the following statement is correct? (Multiple choice)

The 10.0.2.2/32 and 10.0.2.3/32 routes do not exist in the routing table of R1

There is no route 10.0.2.3/32 in the R1 routing table

There is a 10.0.2.2/32 route in the routing table of R1

There is a 10.0.2.3/32 route in the routing table of R1

25. As shown in the figure, the stateful inspection firewall will forward the second TCP three-way handshake message in the figure.

True

False

26. When the administrator configures VRRP, which of the following are not mandatory? (Multiple choice)

Preemption mode

Preemption delay

Virtual IP address

Priority of virtual routers

27. iMaster NCE-Campus supports the management of Huawei network equipment through NETCONF and the management of third-party equipment through SNMP

TRUE

FALSE

28. There is a message in the BGP protocol that is periodically sent between BGP neighbors to maintain the neighbor relationship. This kind of news is:

Update

Hello

open

Keepalive

29. ip ip-prefx List1 index 10 permit 10.1.0.0 24 greater-equal () less-equal 32 means that the first 24 bits of the matching network address are the same as 10.1.0.0, and the network mask length is greater than or equal to 26 and less than or equal to 32. (Use Arabic numerals)

30. Which statement about IGMP Proxy is correct? (Multiple choice)

IGMP Proxy can detect link status in conjunction with NOA to achieve rapid switching between active and standby links

IGMP Proxy is usually deployed on the device between the member hosts that access the device

The downstream connection of the IGMP Proxy device generates multicast forwarding entries based on the information of member hosts joining/leaving the multicast group

The IGMP Proxy device cannot replace the IGMP querier to send query messages to downstream member hosts to maintain group membership

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31. Different from STP, RSTP has only one BPDU type, its value is 2, and there is no TCN BPDU.

TRUE

FALSE

32. Intranet users of a company use the No-pat method of NAT to access the Internet. If all public IP addresses are used, what will happen to intranet users who subsequently go online?

Squeeze out the previous user and force the NAT conversion to go online

Synchronize packets to other NAT translation devices for NAT translation

Automatically switch NAT to PAT and then surf the Internet

Subsequent intranet users will not be able to access the Internet

33. The router receives two BGP routes with the following attributes, please select the best route according to the BGP routing rules:

The best route is route M, due to its AS_Path is shorter than route N

The best route to route N, due to its MED is smaller than route M

The best route to route N, due to its AS_Path is longer than route N

The best route to route M, due to its MED is larger than route N

34. What are the main types of ISIS Hello messages? (Multiple choice)

P2P LAN IIH

Level-1 LAN IIH

Level-2 LANIH

Level-3 LAN IIH

35. Regarding BGP recognized arbitrary attributes, which of the following descriptions are correct? (Multiple choice)

It is not required to be in the Update message, and it can be determined according to the specific situation whether to add to the Update message. All BGP routers must be identified

BGP router may not recognize

Must be transmitted between BGP neighbors

36. performing source NAT configuration, and when there is no-pat configuration parameters, which the following statement is correct?

Only the destination IP address conversion

Simultaneous conversion of source IP address and source port

Only source IP address conversion

Perform destination IP address and destination port conversion

37. Which function does the switch control plane not include?

Business processing

Routing calculation

System loading

Traffic statistics

38. Which of the following statements about BFD applications is correct? (Multiple choice)

The single-arm echo function is to detect the connectivity of the forwarding link through the loopback operation of BFD packets

The linkage between BFD and OSPF is to associate BFD with OSPF, and then notify OSPF through BFD's rapid sensing of link failures, thereby speeding up OSPF's response to network topology changes

BFD single-hop detection refers to the IP connectivity detection of two directly connected systems

BFD multi-hop detection means that BFD can detect any path between two systems. These paths may span many hops or overlap in some parts.

39. Which of the following values can be set for the security level of the customized security zone of the USG series firewall? (Multiple choice)

150

100

40. Which of the following descriptions of the OSPF protocol are correct? (Multiple choice)

The cost value of the second type of external route is only the AS external cost value, and the AS internal cost value is ignored

AS-External-LSA does not belong to any area

AS-External-LSA describes the flooding scope of the route to the AS external route is outside the AS

AS-External-LSA describes the path from the router to the ASBR

Page 5 of 14

41. In order for the non-directly connected EBGP neighbors to be established normally, which of the following configurations must be included? (Multiple choice)

peer ebgp-max-hop

Peer connect-interface

peer ignore

peer as-number

42. As shown in the figure, in the network running the RSTP protocol, the original root port of SWC fails and the port is in Down state. At this time, which of the following processes will the network go through to achieve stability?

The standby port on the SWC becomes the new root port and enters the Forwarding state after passing through the Learning state

SWC re-elects the root port and directly enters the Forwarding state

The standby port on the SWC becomes the new root port and directly enters the Forwarding state

SWC re-elects the root port and enters the Forwarding state after passing through the Learning state

43. As shown in the figure, the management VLAN of LAN is VLAN 10. AP obtains IP address through DHCP, and the network segment is 10.1. 1.0/24 AP, AC and AR are respectively DHCP client, DHCP relay device and DHCP server. (Multiple choice)

Which of the following is the correct configuration of the DHCP relay device and DHCP server?

[AC] dhcp server group AP [AC-dhcp-server-group-AP] dhcp-server 172.21.1.2 [AC-dhcp-server-group-AP] quit [AC] interface Vlanif 10 [AC-Vlanif10] dhcp select relay [AC-Vlanif10] dhcp relay server-select AP [AC-Vlanif10] quit

[AR] ip pool AP [AR-ip-pool-AP] network 172.21.1.0 mask 24 [AR-ip-pool-APJ gateway-list 172.21.1.2 [AR-ip-pool-AP] excluded-ip-address 172.21.1.1 [AR-ip-pool-AP] quit [AR] interface GigabitEthernet 0/0/1 LAR-GigabitEthernet0/0/1] dhcp select global [AR-GigabitEthernet0/0/1] quit [AR]ip route-static 10.1.1.0 255.255.255.0 172.21.1.1

[Ac]dhcp server group AP [AC-dhcp-server-group-AP] dhep-server 10.1.1.2 [AC-dhcp server group-AP] quit [AC] interface Vlanif 10 [AC-V1anif10] dhcp select relay [AC-Vlanif10] dhcp relay server-select AP [AC-Vlanif10] quit

[AR] ip pool AP [AR-ip pool-AP] network10.1.1.0 mask 24 [AR-ip-pool-AP] gateway-list 10.1.1.2 [AR-ip-pool-AP] excluded ip-address 10.1.1.1 [AR-ip-pool-AP] quit [AR] interface GigabitE thernet 0/0/1 [AR-GigabitEthernet0/0/1] dhcp select global [AR-Gigabi tEthernet0/0/1] quit [AR] ip route-static 10.1.1.0 255.255.255.0 172.21. 1.1

44. OSPF has five message types, please match the message types and functions.

45. Execute the () saved-configuration command to clear the content of the configuration file used for the next startup of the device, and cancel the configuration file used for the next startup of the specified system, so that the device configuration is restored to the default value. (Please fill in the complete command, not abbreviated, and use all lowercase English letters)

46. Which of the following descriptions of the OSPF protocol is wrong?

There are four connection types described by Router-LSA: P2P/TransNet/StubNetl virtual link

It is only allowed to advertise routing information between backbone areas and non-backbone areas, and it is not allowed to advertise routing information directly between non-backbone areas

Each OSPF router uses only one Router-LSA to describe the local active connection status belonging to an area

The Link State ID described in the third type of LSA is the router-id of the ABR

47. When the virtual router responds to the ARP request, it uses the real MAC address of the main router.

True

False

48. In the IS-IS broadcast network, which multicast MAC address does the Level-2 router use as the destination address for sending lH?

0180-c200-0016

0180-c200-0014

0180-c200-0015

0100-5EO0-0002

49. How long is the default DHCP address pool lease period?

1 month

1 hour

1 week

1 day

50. Which of the following description of the prefix list is wrong?

The prefix list can match the prefix number and prefix length

The prefix list can be used for packet filtering

The prefix list can be used to filter IP prefixes

The prefix list has a stronger matching function for the routing mask than the access control list

Page 6 of 14

51. Which TLV does IS-IS use to describe the IP Interface Address?

129

128

131

132

52. A network engineer outputs the following information when troubleshooting the OSPF protocol. Based on this to determine which cause the adjacency relationship cannot be established normally?

The area code does not match

Process numbers are discordance

The IP address code of the interface is discordance

Router ID conflict

53. RPF has the function of preventing multicast forwarding loops.

TRUE

FALSE

54. The shortest path from the multicast source to the receiver becomes the shortest path tree SPT.

TRUE

FALSE

55. Route redistribution refers to the operation of only advertising routing information from one routing protocol to another routing protocol.

Which of the following statements about route introduction is correct? (Multiple choice)

When implementing route import, route control can also be deployed to achieve flexible control of correct business traffic

By importing routes, routing information can be transmitted between different routing protocols

The routing protocol itself has anti-loop characteristics, so there is no need to consider loop issues when routes are imported into each other

When implementing route import, you need to pay attention to the routing priority agreements of different vendors may be different

56. Regarding BGP MED, which of the following descriptions are correct? (Multiple choice)

The default value of BGP route MED is 0

By default, BGP routing rules can compare the distance between routes from different autonomous systems.

By default, if the MED value is not set in the route attribute, press the process. If the bestroute med-none-as maximum command is configured. Then handle the maximum MED value of 4294967295

In BGP routing rules, the priority of MED is lower than AS-Path, Preferred-Value, Local-Preference, Origin

57. Regarding the description of the security level of the firewall security zone, which of the following is false?

In the same system, two security zones are not allowed to configure the same security level

The security level can only be set for the custom security zone

Once the security level is set, it is not allowed to change

The newly created security zone, the system defaults its security level to 1

58. Which of the following Hello messages is not included in the IS-IS protocol?

Leve1-1 LAN lH

P2PIlIH

Leve1-2 LANIIH

P2MP llH

59. What are the main components of the SNAP address used by the IS-IS protocol? (Multiple choice)

SEL

DSCP

SYSTEM ID

60. The IGMP protocol runs between the IP host and the multicast router directly connected to it, maintaining the membership of the multicast group

True

False

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61. OSPF supports multiple processes. Multiple different OSPF processes can run on the same router. They do not affect each other and are independent of each other. The routing interaction between different OSPF processes is equivalent to the routing interaction between different routing protocols.

True

False

62. What is the meaning of B in the FLAG field in the forwarding table?

Available routes

Static routing

Black hole routing

Gateway routing

63. The default priority of VRRP devices in the backup group is:

200

150

100

64. BGP prefers the route with the best Origin attribute value. Origin attribute values are: EGP, IGP, ().

65. In the routing rules of BGP, the manually aggregated route generated by the aggregate command has a higher priority than the automatically aggregated route generated by the summary automatic command.

TRUE

FALSE

66. Which of the following tools cannot be directly referenced by the apply clause of route-policy?

IP-Prefix

day

community

origin

67. By default, VRP automatically aggregates the routes imported by BGP.

True

False

68. Which statement is wrong about the VRRP timer? (Multiple choice)

Skew_Time=(255-Priority)/255

By default, the VRRP preemption delay is 1 second

MASTER_DOWN = (3* ADVER_INTERVAL) + Skew_time

By default, the period of VRRP notification messages is 2 seconds

69. About LSA3, LSA4 and LSA5, which of the following description is true?

LSA5 will not change after traversing different areas, while LSA3 will change

LSA3, LSA4 and LSA5 will not change after traversing different areas

LSA3 will not change after traversing different areas, while LSA4 and LSA5 will change

LSA4 will not change after traversing different areas, while LSA3 and LSA5 will change

70. Please match the following hardware modules with the corresponding functions.

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71. After the IGMP proxy device receives a report message from a multicast group, if it does not find the corresponding multicast group, the IGMP proxy device will send a report message for the multicast group to the access device, and send it to the access device. Add the multicast group to the forwarding table.

TRUE

FALSE

72. Use the IP prefix list as shown in the figure for route matching. Which of the following routes can be matched?

ip ip-prefix List1 index 10 permit 192.168.1.0 24 greater-equal 24 less-equal 27

192.168.2.0/24

192.168.3.0/25

192.168.1.0/27

192.168.1.0/23

73. About LSA3, LSA4 and LSA5, which of the following description is correct?

LSA5 will not change after traversing different areas, while LSA3 will change

LSA3, LSA4 and LSA5 will not change after traversing different areas

LSA3 will not change after traversing different areas, while LSA4 and LSA5 will change

LSA4 will not change after traversing different areas, while LSA3 and LSA5 will change

74. By default, the VRRP of Huawei AR routers runs in preemptive mode.

True

False

75. 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:

dhcp static-bind ip-address 192.168.1.11 24 mac-address 5489-98FB-65D8

dhcp server static-bind ip-address 192.168.1.11 mac-address 5489-98FB-65D8

dhcp server static-bind ip-address 192.168.1.11 255.255.255.0 mac-address 5489-98FB-65D8

dhcp static-bind ip-address 192.168.1.11 mac-address 5489-98FB-65D8

76. In the IS-IS broadcast network, which multicast MAC address does the Level-1 router use as the destination address for sending IIH?

0180-c200-0000

0180-c200-0015

0100-5EOO-0001

0180-c200-0014

77. When the MTU of the interconnection interface of the two routers in the broadcast network does not match, and the interface is configured with ospf mtu-enablet, which of the following description about the status change of the neighbor relationship between the two routers is true?

The neighbor relationship status of the two devices stays at 2-way

The neighbor relationship between the two devices stays at Exstart

The neighbor relationship between two devices can enter Full

The neighbor relationship status of the two devices stays in the Init state

78. During the operation of DHCP, multiple message types will be exchanged, so which of the following messages are not sent from the client to the server?

DHCP NAK

DHCP REQUEST

DHCP RELEASE

DHCP DISCOVER

79. The output information of a router is as follows, please match the information on the left with the information on the right.

Router ID of this device: ()

Router ID of the peer device: ()

The interface IP address of this device: ()

City ID to which this device belongs: ()

80. Compared with routers and switchies, what are the unique modules for firewall forwarding?

Switching network board

MPU

LPU

SPU

Page 9 of 14

81. Which one of the following descriptions of the trigger mechanism of 802.1X authentication is correct? (Multiple choice)

The authentication device can trigger authentication in multicast or unicast mode

802.1X authentication can only be initiated by the client

802.1X clients can trigger authentication by multicast or broadcast

802.1X authentication cannot be initiated by an authentication device (such as an 802.1 switch)

82. The network administrator of a company checks the FIB of the router. What fields does the FIB contain? (Multiple choice)

TimeStamp

Protocol

Destination/Mask

Cost

83. In the RSTP protocol, when the network topology changes, the mechanism for responding to changes in the topology is?

The MAC table remains unchanged

Delete the entire MAC address table

Modify the lifetime of the MAC address table

Partial deletion of the MAC address table

84. About OSPF 's ASBR Summary-LSA information description, which of the following is wrong?

Metric indicates that the ABR to reach the ASBR of OSPF overhead

Advertising Router represents the ABR 's Router ID

Link State ID indicates the Router ID of ASBR

The Advertising Router fields in the ASBR-Summary-LSA of all areas are the same

85. Option 82 in the DHCP message is called the relay agent information option, from which the administrator can obtain a lot of information about the client. Option 82 can contain at most () Sub-Options.

86. When running OSPFv3 on a Huawei router, the OSPFv3 process will automatically select an interface address as the router ID of the process.

True

False

87. When two routers establish a pair of logical BGP peers through a multi-hop physical link, the peer connect-interface command must be used.

TRUE

FALSE

88. The content contained in the UPDATE message, which of the description is wrong?

UPDATE contains the local AS number

UPDATE contains path attributes

UPDATE contains information about withdrawing the routing prefix

UPDATE contains reachable route prefix information

89. Which description of Route Policy is correct? (Multiple choice)

The if-match clause is used to match the matching conditions of the node, and the apply clause is used to define the routing behavior that passes the filter.

The filter rule relationship of if-match clauses is "and", that is, all i-match clauses of the node must match

The relationship between Route-Policy nodes is "or", as long as one node's filtering is passed, the Route-Policy can be passed

A Route-Policy is composed of multiple nodes. A section can include multiple if-match and apply clauses

90. In the inter-domain report filtering, which option of the following is the tree breeding outbound direction?

trust―untrust

untrust―dmz

trust―local

untrust―trust

Page 10 of 14

91. Which of the following statements about VLAN hot backup is wrong? (Multiple choice)

In dual-link hot backup, the priority of the active and standby ACs can be configured to be the same to achieve backup in load sharing mode

When configuring VRRP hot backup, you can configure the priority of VRRP to determine the primary and backup colors of the AC device

When configuring VRRP hot standby, the active and standby ACs must be on the same Layer 2 network

In VRRP hot backup, the active and standby ACs can be on different Layer 2 networks and communicate with each other through Layer 3 for backup

92. The BGP Speaker only advertises the changed routes to neighbors.

TRUE

FALSE

93. Which of the following about OSPF AS-External-LSA is correct? (Multiple choice)

Net mask is set to all 0

Link State ID is set as the destination network segment address

Advertising Router is set to ASBR Router ID

Use Link State ID and Advertising Router to uniquely identify an AS-External-LSA

94. The four routers are running IS-S and have established adjacency. The area number and router level are marked as shown in the figure. What is the cost value from R4 to 10.0.2.2/32?

95. The import-route limit command cannot limit the maximum number of external routes that can be imported in an OSPF process.

TRUE

FALSE

96. About the description of Network Address Port Translation (NAPT) and the Translate only network addresses (No-PAT), which of the following statement is true?

No-PAT supports protocol address translation at the network layer

No-PAT only supports protocol port conversion at the transport layer

After NATP translation, for external users, all messages will only come from the same 1P address

NAPT only supports protocol address translation at the network layer

97. If a modular switch only supports the use of cluster cards on the main control board to establish a cluster connection, it means that the modular switch uses CSS2 stacking technology.

TRUE

FALSE

98. In VRRP, when the device status changes to Master, it will immediately send gratuitous ARP to refresh the MAC table entries of the downstream device, thereby directing the user's traffic to this device.

TRUE

FALSE

99. It can be used in a variety of routing protocols. Which of the following routing tool consisting of if-match and apply clauses?

route-policy

IP-Prefix

commnityfilter

as-path-filter

100. When configuring dual-link hot backup, the engineer configured the CAPWAP heartbeat detection interval to be 20 seconds, and the dual-link backup function is enabled, then what is the time for the AP detecting that the active link times out to perform the active/standby switchover?

75 seconds

20 seconds

60 seconds

90 seconds

Page 11 of 14

101. Regarding the matters needing to be attention in configuring the Stub area, which of the following description of is true?

The virtual link can traverse the stub area

If an area is configured as a stub area, all routers in the area must be configured with stub area attributes

The backbone area can be configured as a stub area

ASBR can exist in the stub area

102. What is the BFD version number supported by the VRP version?

version 3

Version 2

Version 1

Version 4

103. The function of routing protocol priority is to assign different priorities to the routes discovered by different protocols, so that when a router learns the same route from different routing protocols at the same time, it can have a priority order of selection.

True

False

104. In multicast routing (*; G) routing table entries can guide message forwarding.

True

False

105. What parameters can the DHCPv6 server assign to the DHCPv6 client? (Multiple choice)

STP server address

DNS server address

Gateway address

IPv6 address prefix

106. In the description of the default priority of each protocol under the VRP platform, which is correct?

The priority of OSPF routing is 15

The priority of ISIS routing is 10

The priority of static routing is 60

The priority of BGP routing is 20

107. The ACL command ac1 [number] ac1-number [ match-order {autol config}], where ac1-numnbe is used to specify the number of the access control list, and the value range of ac1-number of the basic access control list is ().

1000~3999

0~1000

3000~3999

2000 ~2999

108. When the Hold time supported by two BGP neighbors is inconsistent, the neighbors will negotiate to adopt the lowest Hold time interval that both ends can support.

TRUE

FALSE

109. In dual-link hot backup, AP will establish a CAPWAP link with the main AC and backup AC.

True

False

110. When a router running BGP receives a route with an unreachable next hop, how to deal with it?

Refuse to join the BGP routing table, and silently discard

Receive the route, add it to the BGP routing table, participate in the BGP routing rules, it may be selected as the best route, and add it to the IP routing table

Receive the route and add it to the BCP routing table. But this route will not be selected by BCP and will not be added to the IP routing table

Send an error message to the router that issued the Update

Page 12 of 14

111. The first 4 bits of the IP multicast address are fixed 1110, corresponding to the high 25 bits of the multicast MAC address. Among the last 28 bits of the IP multicast address, only 23it is mapped to the MAC address, so 5 bits of address information are lost. The direct result is that 32 IP multicast addresses are mapped to the same MAC address.

TRUE

FALSE

112. For the following understanding of DR/BDR, which is wrong? (Multiple choice)

The network address monitored by DR other is 2240.0.6

In the broadcast network, DR and BDR must be elected. Without either DR or BDR, the broadcast network cannot work normally

The power of the multicast address monitored by DR other is 224.0.0.5

All DR other only establish adjacency with DR and BDR

113. The RSTP protocol provides a variety of protection functions. For example, when the edge port is configured in the protected state, after the edge port receives the BPDU message, what is the processing method?

Forward BPDU packets as required

Get relevant information after BPDU message

Close the port

Directly discard BPDU packets

114. All routers in a certain network run IS-S and are in Area 49.0001. The LSDB of R1 is shown in the figure, and the Level of the four routers is judged based on this.

115. OSPF can support multiple network types. Which of the following network types need to elect DR and BDR? (Multiple choice)

NBMA

P2MP

BROADCAST

P2P

116. When the stateful inspection firewall forwards subsequent data packets (not the first packet), which of the following is the main basis?

Route table

OFIB table

MAC address table

Session table

117. As shown in the figure, four routers in the same LAN are running lS-IS, where R1 is DIS, then R2, R3, R4 establish adjacency relationship with R1 respectively, and no adjacency relationship is established between R2, R3, and R4.

True

False

118. In a large-scale WLAN three-layer network, which of the following statements about the description of the DHCP server is wrong? (Multiple choice)

In a large-scale WLAN network, it is generally recommended to use AC as a DHCP server

In a large-scale WLAN network, it is recommended to deploy an independent DHCP server

In a large-scale WLAN network, the AP can obtain the AC's IP address from the DHCP server through the option43 parameter

In a large VLAN network, the AP can obtain the AC's IP address from the DHCP server through the option60 parameter

119. In the OSPF routing protocol, the asbr-summary command can be followed by the not-advertise parameter. The meaning of this parameter is not to advertise aggregated routes.

TRUE

FALSE

120. Which of the following descriptions of the AC roaming group is wrong? (Multiple choice)

The AC of the roaming group needs to be deployed-Master Controller

The AC of the roaming group use DTLS extended tunnels to encapsulate and transmit roaming related information

Master Contoller must be an AC in the roaming group

STA can only roam between ACs in the same roaming group

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121. The network administrator on a router BGP Ministry living information, neighbor information is shown in the figure, which of the following statements about the information is correct? (Multiple choice)

The router did not receive the BGP routing prefix from the peer

The Router ID of the local router is 1.1.1.1

and peer 3.3.3 3 received, number of packets sent, respectively 10, 20

and peer 3.3.3.3 neighbor relationship are IBGP peer

122. What are the key components of building an IP wide area bearer network solution with Huawei NetEngine smart router?

iMaster NCE-Fabric

iMaster NCE-IP

iMaster NCE-Campus

iMaster NCE-WAN

123. The following is part of the output information of the router RTB. Which of the following regarding the description of the output information is false?

The last host sending the Report message is 225.1.1.2

The number of dynamically joined multicast groups on the interface is 1

The display igmp group command is used to view the IGMP multicast information, including the multicast group information dynamically joined through the member report and the multicast group information statically joined through the command line

The multicast address to join is 255.1.1.2

124. Which of the following tools cannot be directly referenced by the apply clause of route-policy?

IP-Prefix

day

community

origin

125. Which of the following OSPF areas can only reach other areas through the default route?

Backbone area

totally stub area

NSSA

Non-backbone area

126. Regarding the description of OSPF neighbor relationship and adjacency relationship, which of the following statement is true?

The adjacency is maintenance by the DD message of OSPF

OSPF routers must establish an adjacency before exchanging Hello packets

Neighbor relationship is a relationship selected from adjacency relationships for the purpose of exchanging routing information

Not all neighbor relationships can become adjacency relationships

127. The four routers are running IS-IS and have established adjacency relationship. The area number and router level are marked as shown in the figure. R1 and R2 are PPP links, R2 is DIS. Which of the following statement is correct? (Multiple choice)

R2 sends LSP to R3 and R4 in unicast mode

If R1 sends an LSP message, R2 needs to send PSNP to confirm

R3 sends CSNP periodically to help achieve Level-2 LSDB synchronization

128. Regarding the description of VRRP load sharing, which is correct? (Multiple choice)

Load sharing method refers to the establishment of two or more backup groups, and multiple routers carry services at the same time

When configuring priorities, the VRRP masters of the three virtual routers can be on different routers

Multiple virtual routers can be created on one interface of the router, so that the router can be used as a master router in one virtual router, and at the same time as a backup router in other virtual routers.

The load sharing method means that multiple routers undertake services at the same time, so the load sharing method requires two or more virtual routers

129. Which of the following description about VRRP is incorrect?

VRRP determines the status of each router in the virtual router based on priority

If the Master already exists, Backup will also preempt

When two routers with the same priority compete for the Master at the same time, compare the size of the interface IP address, and the one with the larger interface address is elected as the Master

If the Backup router works in non-preemptive mode, as long as the Master router does not fail, the Backup router will not become the Master router even it is subsequently configured with a higher priority.

130. In the WLAN three-layer networking scenario, APs will go online through the following stages. Please sort them in order. (Multiple choice)

AP discovers AC through option 43

AP and AC establish a CAP7AP tunnel

AP goes online, AC delivers service configuration to AP

AP obtains IP address

Page 14 of 14

131. Which of the following description of the OSPF default route is false?

OSPF routing can be issued by the area border router (ABR) Type3 default Summary LSA, used to guide the routers in the area to forward packets between areas

The Autonomous System Boundary Router (ASBR) publishes Type5 external province ASELSA, or Type7 external default NSSALSA, which is used to guide the routers in the autonomous system (AS) to access the outside of the autonomous system

When the router does not have an exact matching route, it can forward packets through the default route

Due to the hierarchical management of OSFP routing, the priority of Type5/7 missing routing is higher than Type3 routing

132. Which of following description of the permanent multicast address is wrong?

All routers running OSPF protocol monitor 224.0.0.5

All hosts and routers in the network segment monitor 224.0.0.1

All routers monitor 224.0.0.2

All routers running the PIM protocol monitor 224.0.0.100

133. Which of the following description about configuration commands for the default routing issued by each protocol is wrong?

In the ISIS protocol, the default-route-advertise command is used to advertise the default route information to neighbors

In static routing, the ip route- static default preferencer command is used to generate a default route on the current router

In the OSPF protocol, the default-route- advertised command is used to advertise the default route information to the normal OSPF area

In the BGP protocol, the default-route imported command is used to enable the function of importing provincial routes into the BGP routing table

134. Which of the following routing prefixes meet the following IP-Prefix conditions? (Multiple choice)

[HUAWEI] ip ip-prefix test index 10 permit 20.0.0.0 16 greater equal 24 less-equal 28

20.0.1.0/24

20.0.1.0/23

20.0.1.0/25

20.0.1.0/28

135. Which of the following statements about the BFD detection mode is correct? (Multiple choice)

Asynchronous mode is a commonly used BFD detection mode

In query mode, once a BFD session is established, the system will no longer periodically send BFD control packets

Asynchronous detection mode does not support echo function

In asynchronous mode, the systems will send BFD control packets at the negotiated cycle. If a system does not receive the BFD control packets from the peer within the detection time, it will declare the status of the BFD session Down.

136. The advanced access control list is a series of sequential rules composed of permit l deny statements. These rules can match IP packets according to which of the following attributes? (Multiple choice)

Destination port number

Source address

Destination address

Source port number

137. Will setting the community attribute of the route through the routing policy affect the route selection?

It can be indirectly affected. You can classify routes by setting the Community attribute of the route, and then set different routing-related attributes according to the category, such as Local_Pre, MED, etc., so as to achieve the purpose of influencing routing

It cannot be affected because the Community attribute of the route is a non-transitional attribute and cannot be transmitted between routers

It can be indirectly affected. You can classify routes by setting the community characteristics of routing, and then set different routing-related attributes according to the category. These attributes only include Loacal_Pre and MED, so as to achieve the purpose of influencing the routing

After the router receives the route update with the Commmity attribute of No_ Advertise, it will not be published outside the local AS

138. As shown below, the firewall received from PC1 to PC2 packets, which of the following statement is correct? (Multiple choice)

The message cannot match any security policy

The message matches the security policy rule 1, and the firewall will forward the message

There is no configuration source in the security policy rule2, and the security domain shows that it matches any security domain

The packet matches the security policy rule 2 and will be discarded by the firewall

HCIP-Datacom-Core Technology V1.0 H12-821_V1.0 Dumps

HCIP-Datacom-Core Technology V1.0 H12-821_V1.0 Dumps

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