H12-821_V1.0試験無料問題集（330題）「Huawei HCIP-Datacom-Core Technology V1.0 認定」

出題：1

On an OSPF network, routers learn routing information on the entire network by exchanging LSAs. Which of the following values is the LS Age in the LSA header when an LSA is deleted?

A. 1800s

B. 1200s

C. 3600s

D. 600s

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：2

Compared with RSTP, which of the following port roles are added to MSTP?

A. Regional edge port

B. Master port

C. Edge port

D. Backup port

正解：A,B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：3

On an OSPF network, if a router receives an update of an LSA that exists in the local LSDB, the router updates the LSDB and floods the LSA.

A. FALSE

B. TRUE

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：4

See the following figure. All routers on the network run IS-IS and are in area 49.0001.
By referring to the LSDB of R1, the Level-2 DIS is. (Enter the device name, for example, R1.)

正解：

R3
Explanation:
Understanding the LSDB and Level-2 DIS Election in IS-IS:
In IS-IS, theDesignated Intermediate System (DIS)is elected for both Level-1 and Level-2 on broadcast networks to manage the link-state database (LSDB) and reduce the number of LSAs exchanged.
The election of the DIS is based on thehighest priority.
If the priority is the same, the router with thehighest System IDbecomes the DIS.
HCIP-Datacom-Core Technology Training Material (IS-IS DIS Election).
Analyzing the LSDB:
From the LSDB ofR1, the Level-2 link-state database includes the following entries:
LSPID 0100.0000.3003.00-00: This is R3, and it is present in the Level-2 LSDB with the sequence number and checksum details.
Other routers (R1, R2, R4) are present but do not have the characteristics of the Level-2 DIS in this topology.
Based on the System IDs,R3 (0100.0000.3003)has the highest System ID, making it theLevel-2 DIS.
Conclusion:
The Level-2 DIS on the network isR3, based on the election rules and the LSDB information shown in the figure.

出題：5

On an STP network, parameters used for role election, such as the root bridge ID, root path cost, and bridge ID, are all fields in BPDUs.

A. FALSE

B. TRUE

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：6

On a broadcast IS-IS network, a DIS needs to be elected to create and update pseudonodes. Which of the following values is the default DIS priority of an IS-IS interface?

A. 1

B. 200

C. 100

D. 64

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：7

Which of the following statements regarding the display bgp routing-table command output is true?

A. The route to the destination address 192.168.1.0 is learned through AS 200.

B. The MED value of the route to the destination address 192.168.1.0 is 100.

C. The route to the destination address 192.168.1.0 is injected into the BGP routing table using the network command.

D. The route to the destination address 192.168.1.0 is not the optimal route in the BGP routing table.

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：8

In the OSPF protocol, intra-area route calculation involves only Router LSA, Network LSA, and Summary LSA.

A. FALSE

B. TRUE

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：9

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. All non-backbone areas must be directly connected to area 0.

B. Inter-area routes need to be forwarded through area 0.

C. An ABR cannot inject Type 3 LSAs that describe routes to a network segment in an area back to thesame area.

D. Inter-area routes cannot be directly transmitted between non-backbone areas.

正解：A,B,C,D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：10

In addition to a route reflector, the confederation is another method that reduces the number of IBGP connections in an AS.
Which of the following statements are true about the confederation technology? (Choose all that apply)

A. The logical topology does not need to be changed when a confederation is used.

B. All member devices in a confederation need to be reconfigured.

C. Special EBGP connections are established among sub-ASs in a confederation, and the sub-ASs need to be fully meshed.

D. This technology is applicable to large-scale networks.

正解：A,C,D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：11

Which of the following statements regarding Local-Preference in BGP is true?

A. The default Local-Preference value is 100.

B. Local-Preference can be transmitted between ASs.

C. Local-Preference is a well-known mandatory attribute.

D. Local-Preference affects traffic that enters an AS.

正解：A 解答を投票する

出題：12

An IP prefix list is a common matching tool used in routing policies. Which of the following cannot be configured as matching conditions in an IP prefix list on a Huawei router?

A. Mask

B. Index

C. Action

D. Port number

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：13

IGMP group entries play an important role in multicast forwarding. An administrator runs a command to view information about a multicast entry. The information is as follows:
sql
Copy
<HUAWEI> display igmp group
Interface group report information
Vlanif100(10.1.6.2):
Total 1 IGMP Group reported
Group Address Last Reporter Uptime Expires
225.1.1.2 10.1.6.10 00:02:04 00:01:17
Given this, which of the following statements are true?

A. This entry can be used to construct the corresponding (S, G) entry.

B. 225.1.1.2 is the address of the group that the user joins.

C. Expires indicates the aging time of the IGMP group.

D. This entry is created when the device receives an IGMP Join message from a user.

正解：B,C,D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：14

A large shopping mall configures a VLAN pool to prevent network performance deterioration caused by potentially large broadcast domains.
A network engineer runs the display vlan pool name STA command to check information about the VLAN pool.
The following command output is displayed:
<AC> display vlan pool name STA Name : STA Total : 2 Assignment: hash Threshold Notify Count: 3 Threshold Notify time(min): 3 VLAN ID : 2 4
Which of the following statements are true?

A. The name of the VLAN pool is STA.

B. The total number of VLAN pools is 2.

C. The VLAN pool uses the even VLAN assignment algorithm.

D. The VLANs with the IDs of 2 and 4 are added to the VLAN pool.

正解：A,D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：15

STP ensures a loop-free network but has a slow network topology convergence speed, affecting communication quality. RSTP has made some improvements based on STP. Which of the following improvements is not included?

A. The non-root switch running RSTP sends configuration BPDUs at the interval specified by the Hello timer, which is performed independently by each device.

B. RSTP reduces five port states to three port states based on user traffic forwarding and MAC address learning.

C. RSTP deletes three port states and adds two port roles.

D. If a port does not receive configuration BPDUs from the upstream device within four Hello intervals, the switch considers that the negotiation with the neighbor fails.

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：16

BFD provides fast fault detection independent of media and routing protocols. To use this mechanism to detect link connectivity, devices at both ends must support this feature.

A. FALSE

B. TRUE

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

H12-821_V1.0試験無料問題集「Huawei HCIP-Datacom-Core Technology V1.0 認定」