HCIE-Datacom V1.0 H12-891_V1.0 Questions and Answers

1. The DHCP protocol assigns to clients—some TCPIP-related parameter information—in the process DHCP defines a variety of messages that are encapsulated at the transport layer: (sortic).

PPP package

IP encapsulation

TCP Encapsulation

UDP Encapsulation

2. In different scenarios, RSTP provides different protection functions, and the wrong statement about this statement is

The root protection feature is enabled for the specified port, and its port role can only remain as the specified port

When the anti-TC-BPDU packet attack feature is enabled, the number of times the switching device processes IC BPDU packets per unit time is configurable

after the BPDU protection function is enabled on the switching device, if the edge port receives RST BPDU, the edge port will be set to a non-remote port and the spanning tree calculation will be re-performed

Start the specified port of root protection, when the port receives a better RSTBPDU, the port will enter the Discarding state and is no longer forwarding packets. If the port does not receive a better RSTBPD for a period of time then automatically revert to the normal Forwarding state

3. In a VXLAN network, traffic is connected to the VXLAN network, and it can also be used to communicate with the same subnet within the same XLAN network

NVE interface

VXVAN L2 Gateway

VXLAN L3 Gateway

VLANIF interface

4. SSH uses asymmetric encryption algorithms AES and DES to achieve security for data transmission, and uses HMAC to ensure the complete integrity of integer data

TRUE

FALSE

5. Which of the following IEEE standards is specific to Gigabit Ethernet?

8023z

8023ab

8023ad

8023af

6. The BSR/RP mechanism described below describes the correct determination? (Multiple choice questions).

There can be multiple C-BSRs in the

PIM-SM domain, but only one BSR can be elected.

BSR collects C-RP information by receiving packets of C-RP

BSR advertises BSR and C-RP information to all routers in the PIM-SM domain via flood bootstrap messages

A C-BSR can also collect C-RP information by receiving C-RP packets

7. As a network administrator, which of the following protocols can I use for network device configuration?

SSH

NETCONF

LLDP

SNMP

8. How do 8021w and 8021D handle BPDUs?

8021D bridge only forwards BPDU packets received from the root bridge

The 8021D bridge does not forward BPDU messages

The 8021w bridge forwards only BPDU packets received from the root bridge

8021w Bridge does not forward BPDU packet

9. Which of the following messages does the BGP protocol support?

Update

Open

Hello

Keepalive

10. In RSTP, which port provides a backup path to reach the root node of the spanning tree?

What state is the port in?

Root Port and Listening Status

Alternate Port and Forwarding Status

Alternate Port and Learning Status

Designated port and Listening status

Alternate port and Discarding status

11. IPV6 multicast introduces the concept of multicast scope, which of the following ways is the multicast scope concept implemented? Multi-select

When the group shake source sends IP6 multicast data, the TTL value of the packet is set to limit the transmission range of the group shake

There is a special field in the IPv6 multicast address that specifies the propagation range of multicast.

Multicast scope is just a concept of spreading scope, and there is no specific technical implementation

During network configuration, the administrator uses the configuration command at the edge of the network to limit the multicast scope.

12. If a DR needs to be elected between multicast routers running PIM-SM to be responsible for the sending and receiving of source or member multicast data, which one is described correctly below for the DR election rule?

PIM routers with long interface masks are elected dr.

Compare the DR priority first; With the same priority, you need to compare the interface IP addresses of the PIM routers to elect dr

PIM routers with small IP addresses are elected DR. PIM routers with low

DR priority values are elected DR.

13. For Layer 2 VPN technology, the following statement is correct? Multi-select

VPLS is a widely used technology in the live network, which can provide transparent transmission of three-layer messages and achieve multi-point access.

The VPLS configuration is complex and the Layer 2 network transmits BUM packets.

BGPEVPN supports features such as tenant isolation, Multi-homing, and broadcast suppression.

BGPEVPN addresses mac address drift and multi-tenancy that VPLS cannot support.

14. After configuring the VLAN-based MAC address drift detection function, if the MAC address drifts, you can configure the actions of the interface according to your needs.

Which of the following is not a configurable action?

Send an alert

The MAC address blocks

Interface blocking

Traffic filtering

15. What of the following actions can enable fast failure detection on multicast networks?

Shorten the Holdtime of Join/Prune messages

Reduce the interval at which the interface sends Hello messages

A PIM BFD session is established between neighbors

Reduce the interval between sending Join/Prune messages

16. What is the wrong description of the function of OSPFv3 protocol authentication?

OSPFv3 can only establish a security alliance SA using manual mode

Huawei router OSPFv3 IPSec authentication can not only support transmission mode, but also support tunnel mode

OSPFv3 authentication relies on IPv6 packet authentication headers and encapsulation
security net load headers

The OSPFv3 protocol header removes the Type and Automation fields

17. What are the following correct statements about MUX VLANs? (Multiple select).

The Principal VLAN can communicate with all VLANs within the MUX VLAN

Each Separate VLAN must be bound to a Principal VLAN

Separate VLANs can communicate with all VLANs within a MUX VLAN

Each Group VLAN must be bound to a Principal VLAN

18. In VXLAN scenarios, what features can be turned on to reduce flooding of ARP messages between VTEPs? (Multiple select).

Host Information Collection

Local ARP agent

port isolation

ARP broadcast suppression

19. What are the types of link types included in OSPF’s route LSA?

Stubnet

P-2-P

VLINK

Fransnet

20. There are many ways to establish a cluster on a box switch, what methods does Huawei frame switch support to establish a cluster?

Set up via a cluster card on the motherboard

Establish

through the cluster daughter card on the interface board. Establish

through the service interface on the interface board Established by switching the cluster card on the network board

Come Here To Read H12-891_V1.0 Free Exam Questions

Leave a Reply Cancel reply