H12-821_V1.0-ENU試験無料問題集（1081題）「Huawei HCIP-Datacom-Core Technology V1.0 認定」

出題：1

What are the traffic statistics methods? (Multiple choice)

A. Netstream

B. SNMP

C. IP packet count

D. Port mirroring

正解：A,B,C,D 解答を投票する

出題：2

Which of the following descriptions of mirror ports are correct? (Multiple choice)

A. The implementation of the mirroring function requires cooperation with monitoring equipment. The monitoring equipment is mainly used to analyze the received mirroring messages.

B. A traffic policy containing flow mirroring behavior is applied on the interface. The mirror port is a port connected to the monitoring device and is used to output the packets copied from the mirror port.

C. Port mirroring means that the device copies a packet passing through the mirrored port and transmits the packet to the designated observing end.

D. Analyzing and monitoring port flow mirroring is a type of traffic behavior. When applied on a device, it is actually performed globally, in a VLAN or on a terminal.

正解：A,C,D 解答を投票する

出題：3

In the BGP protocol, which of the following BGP attributes can be used to mark routes with certain common characteristics so that other BGP routers can identify them?

A. Community

B. Origin

C. AS-path

D. MED

正解：A 解答を投票する

出題：4

Which of the following descriptions about OSPF packet authentication is incorrect?

A. The router supports two OSPF packet authentication methods: interface authentication and area authentication. When both authentication methods exist, the interface authentication method is used first.

B. OSPF message authentication will encrypt OSPF messages to ensure their security and confidentiality.

C. In OSPF interface authentication mode, the authentication mode and password of the directly connected interface of the adjacent router must be consistent.

D. After OSPF enables packet authentication, only OSPF packets that pass authentication can be received.

正解：B 解答を投票する

出題：5

In WLAN networking, backup technologies can be deployed to ensure the reliability of the networking.
Which of the following statements about backup technology is correct? (Multiple choice)

A. After deploying dual-link hot backup, when the active AC fails, the AP can quickly switch to the standby AC, and the STA does not need to disconnect and reconnect

B. After N+1 backup is deployed, when the active AC fails, the AP needs to go online to the standby AC again, and the STA will interrupt the service

C. After deploying dual-link cold backup, when the active AC fails, the AP only needs to wait for a period of time before switching to the standby AC, which will not affect the STA business

D. After deploying VRP hot backup, when the active AC fails, STA can forward data directly through the standby AC

正解：B,D 解答を投票する

出題：6

Which of the following BGP attributes does not have to exist in the Update message?

A. Origin

B. AS_Path

C. WITH

D. Next_Hop

正解：C 解答を投票する

出題：7

Which of the following messages does BGP support? (Multiple choice)

A. Hello

B. Update

C. Keepalive

D. Open

正解：B,C,D 解答を投票する

出題：8

Once the BGP connection is established, without load balancing configured, the BGP Speaker only advertises the best route in the BGP routing table to the neighbor.

A. FALSE

B. TRUE

正解：B 解答を投票する

出題：9

The connection between Site_1 and Site_2 is as shown in the figure. According to the configuration analysis in the figure, when sending a data packet from Site1 to Site_2, the Destination IP address in the Delivery Header of the message after R1 encapsulation is ().

正解：

34.34.34.4

出題：10

By executing the 0 command, users on different ports in the same VLAN can be completely isolated at Layer 2 and Layer 3 and unable to communicate.

正解：

port-isolate mode all

出題：11

As shown in the figure is the BGP error output information of a router.
Which of the following statements about this information is wrong?
<Huawei> display bgp error
Error type: Peer Error
Date Time: 2010-03-22 12:40:39
Peer Address: 10.1.1.5
VRF Name: Public
Error info: Incorrect remote AS

A. Error Type shows hesitating neighbor relationship errors lead to

B. The neighbor address of the router is 10.1.1.5

C. The cause of the error may be due to the wrong neighbor address

D. The error occurred at 12:40:39 on March 22, 2010.

正解：C 解答を投票する

出題：12

In the network as shown in the figure, without making any attribute modifications, which of the following descriptions of R5 preferred routes are correct? (Multiple choice)

A. The AS_Path of R2 sending the 10.0.1.0/24 route is (200100)

B. The AS_Path of R4 sending the 10.0.1.0/24 route is (100300400)

C. R5 will achieve load sharing

D. R5 will prefer the route advertised by R2 because the AS_Path attribute value of this route is shorter.

正解：A,D 解答を投票する

出題：13

IPv6 uses segmented extension headers to improve QoS processing efficiency of IPv6 packets.

A. FALSE

B. TRUE

正解：A 解答を投票する

出題：14

The VNI field length of VXLAN packets is 24 bits.

A. FALSE

B. TRUE

正解：B 解答を投票する

出題：15

SA (Security Association) is a parameter that must be negotiated when an IPsec tunnel is established, so which of the following parameters is used to uniquely identify SA? (Multiple choice)

A. Header checksum of the network layer header

B. Security Protocol Number

C. Destination IP address

D. SPI (Security Parameter Index)

E. Source MAC address

F. Source IP address

正解：A,B,C,D,E,F 解答を投票する

出題：16

BGP uses which of the following messages to exchange routing information between peers?

A. Route-refresh

B. Update

C. Keepalive

D. Open

正解：B 解答を投票する

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