H12-821_V1.0無料問題集「Huawei 」

質問 1

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: (JPNTest メンバーにのみ表示されます)

質問 2

Match the following IPv4 multicast protocols with the corresponding functions.

正解：

Explanation:
IGMP: Manages IPv4 multicast group members and runs on the multicast network's last segment (that is, the network segment where a Layer 3 network device is connected to user hosts).
PIM: Sends multicast data over the network to the multicast device that is connected to group members that have requested the multicast data, implementing multicast data forwarding based on routes.
IGMP Snooping: Manages and controls the forwarding of multicast data packets to effectively suppress the flooding of multicast data packets on the Layer 2 network.
IGMP (Internet Group Management Protocol):
* IGMP is used by hosts and adjacent multicast routers to establish and maintain multicast group memberships on a local subnet.
* It allows a host to inform a multicast router of its desire to receive multicast traffic for a specific group.
* It operates at Layer 3 and runs on the last segment of the network.

質問 3

An engineer sets the CAPWAP heartbeat detection interval to 20 of the active link before an active/standby switchover occurs?

（A）60s

（B）90s

（C）20s

（D）75s

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 4

On an OSPF network, one router with P2P as the network type is directly connected to another router with P2MP as the network type. If the Hello intervals on the two routers are changed to be the same, neighbor relationship establishment and LSDB synchronization are not affected.

（A）FALSE

（B）TRUE

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 5

BFD control packets are encapsulated in UDP packets for transmission. What is the destination port number of multi-hop BFD control packets?

（A）3784

（B）5784

（C）2784

（D）4784

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 6

Which of the following statements regarding the BGP error display of a router false?

（A）The error occurred at 12:40:39 on March 22, 2010.

（B）Error Type indicates that the BGP error is caused by the neighbor relationship error.

（C）The neighbor address of this router is 10.1.1.5.

（D）The error may be caused by the incorrect neighbor address.

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 7

Compress the 2001:0DBB:B8:0000:C030:0000:0000:09A0:CDEF address.___________(if the answer contains letters, capitalize them.)

正解：

2001:DBB:B8:0:C030::9A0:CDEF
Explanation:
The IPv6 address 2001:0DBB:B8:0000:C030:0000:0000:09A0:CDEF can be compressed by removing leading zeros in each segment and collapsing consecutive zero groups into ::. The result is 2001:DBB:B8:0:
C030::9A0:CDEF .

質問 8

When a BGP device sends an Open message to establish a peer connection, which of the following information is carried?

（A）Router ID

（B）Hold time

（C）NLRI

（D）Local AS number

正解：A、B、D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 9

This configuration is part of RTA configuration. Which of the following statements regarding the configuration are true?
[RTA] ospf 100
[RTA-ospf-100]silent-interface GigabitEthernet 1/0/0

（A）Direct routes of GigabitEthernet 1/0/0 can still be advertised.

（B）GigabitEthernet 1/0/0 is prohibited from sending OSPF packets.

（C）RTA cannot establish a neighbor relationship with the neighbor that this interface is directly connected to.

（D）This interface cannot send Hello packets.

正解：B、C、D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 10

The typical characteristics of the AI era are that it focuses on data, explores data value, and improves AI efficiency. Therefore, the core requirement of AI for data center networks is speed, meaning low latency.

（A）FALSE

（B）TRUE

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

H12-821_V1.0 無料問題集「Huawei 」

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