[Dec 18, 2023] Step by Step Guide to Prepare for H12-891_V1.0-ENU Exam BrainDumps [Q287-Q308]

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Dec 18, 2023 Step by Step Guide to Prepare for H12-891_V1.0-ENU Exam BrainDumps

HCIE-Datacom H12-891_V1.0-ENU Real Exam Questions and Answers FREE Updated on 2023

Huawei H12-891_V1.0-ENU certification exam is ideal for professionals who want to enhance their skills and knowledge in data communication. HCIE-Datacom V1.0 certification exam is useful for network engineers, network architects, and network administrators who want to demonstrate their expertise in Huawei technologies.

Huawei H12-891_V1.0-ENU (HCIE-Datacom V1.0) Certification Exam is a professional certification offered by Huawei Technologies Co. Ltd. HCIE-Datacom V1.0 certification is designed to validate the technical skills and knowledge required by network engineers and architects to plan, design, implement, and maintain large-scale data communication networks using Huawei products and solutions. It is a highly sought-after certification by IT professionals seeking to enhance their career prospects in the networking industry.

NO.287 The following description of the process of sending and receiving data frames in switch interface Access mode is correct? (Single choice questions).

In Access mode, labeled data frames are discarded directly when they are received.

Access mode strips off the VLAN tag of the dataton when sending.

Access mode receives only unlabeled data frames.

When a data frame enters the switch interface, the switch learns the destination MAC address in the data frame.

NO.288 If all the public IP addresses are used by a company’s intranet users to access the Internet using NAT’s No-pat method, what will happen to subsequent intranet users who access the Internet?

automatically switch NAT to PAT after the Internet

Subsequent intranet users will not be able to access the Internet

Synchronize messages to other NAT conversion devices for NAT conversion

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

NO.289 As shown in the figure, in the context of IPv4 and IPv6, the SEL field in the NET address of isis always takes a value of 00?

Right

Wrong

NO.290 What is the following description of MPLS incorrect?

The length of the MPLS tag is 20 to 20 for packet forwarding.

The tag space range of dynamic signaling protocols such as LDP, M P-BGP is 16 to 1023

When using the TTL processing method of Pipe mode, the IP packet transmits the TTL of the IP packet over the IPLS network. The value is only minus 1 for the MPLS in and out nodes.

MPLS supports multi-layer label nesting, and the S bit value of the innermost label is 1.

NO.291 WRED is configured on the newly deployed router HW.
What is the correct description of the WRED features below? (Multiple choice questions).

WRED can set different drop thresholds and packet loss rates for packets of different priority

When the flow exceeds the minimum threshold, WRED begins to discard all inlet flow (tail drop)

Avoid global synchronization by selectively dropping multiple TCP streams

Low-bandwidth traffic is easier to drop than high-bandwidth traffic

NO.292 Regarding route Policy, the following description is correct as? (Multiple selection) Multiple selection

Advanced ACLs can be applied in route-policy to filter routes

The table entry exceed::0 less-equal 128 indicates that all IPv6 routes are allowed through

If more than one node is defined in Route-policy, at least one node in each node should have a matching pattern of permit

Route-Policy can filter only the default route

NO.293 If a Huawei S series switch needs to designate a member switch as the primary switch of the stack, it can power on this switch first, and then power on other member switches after 20s.

True

False

NO.294 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

NO.295 The following statement about the application of BFD is correct?

The one-arm echo function refers to the detection of the connectivity of the forwarding link through the loopback operation of the BFD packet

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

BFD and OSPF linkage is to associate BFD and OSPF, and notify OSPF through BFD’s rapid sensing of link failures, thereby speeding up OSPF Response to changes in network topology

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

NO.296 Use ping-ax-cY-sZ-vpn-instance M 105162, which has the meaning of

IcMP request for the ping, message size Z (without IP and ICMP headers)

The source IP address of the ping packet is X

The ping belongs to the VPN instance M

The ping sends Y ICMP requests

NO.297 Which of the following messages does the BGP protocol support?

Update

Open

Hello

Keepalive

NO.298 The following statement about the BFD one-arm echo function is correct (multiple choice).

The BFD one-arm echo function must be configured with local identifiers and carrier identifiers

The default destination IP address for the protocol message for BFD one-arm echo is 22400184

After the BFD one-arm echo function is turned on, the destination IP and source IP of the BFD message are inducted

BFD One-Arm Echo function is suitable for scenarios where one device supports BDD and the other device does not support

NO.299 BGP EVPN advertises external routes, which of the following routes?

Type1

Type2

Type3

Type4

Type5

NO.300 Which of the following scenarios send free ARP messages? (Multiple choice questions).

After the VRRP protocol master and standby role election is completed

The DHCP client receives an acknowledgment message from the server after it sends it

When a new host configured with an IP address is connected to the network

When a host connected to the switch issues a Ping message.

NO.301 By default, which of the following security MAC address types lose table entries after the device restarts?

Sticty MAC address

Black hole MAC address

Secure static MAC address

Secure dynamic MAC address

NO.302 In the following topology diagram, R1 can access the Internet through R2 and R3, R1 and R2, R1 and R1 An EGP connection is established between R3, and R2R3 belongs to the same AS, each via BGP Publishing a default route that requires R1 to visit lnternet’s traffic preference R2, can the following practices be achieved?

R1 specifies that the peer R3 sets the MED property to 150 in the import direction

R2 specifies that the peer R1 sets the local priority to 150 in the export direction

R2 specifies that the peer R1 sets the MED property to 150 in the export direction

R1 specifies that the peer R2 beats the local priority in the import direction to 150

NO.303 The following is the correct description of the aggregation of BGP (radio).

After you configure the Aggregate ipv4-address mask, only aggregate routes are published, not detail routes.

For IPv6 routing, BGP supports manual aggregation and automatic aggregation.

BGP enables automatic aggregation by default.

Routes in the BGP local route table can be manually aggregated.

NO.304 The following description of the RD attribute filter for BGP is correct?

If RD-filter is not configured, but the RD-filter is referenced for filtering, the matching result is deny.

If RD-filter is configured, but the routed RD is not matched with any of the RDs defined in the rule, the default match result is permit.

Multiple rules are matched in the order in which they are configured.

There is always an “or” relationship between the rules configured by RD-filter.

NO.305 Regarding the domain-authentication-mode md5 hello command in the ISIS process, the correct explanation is?

ISIS authentication cannot be applied in IPv6 environments.

This command is mainly used to make is the ISIS Hello message carry authentication information during the transmission process.

All router domain authentication methods of the same routing domain are MD5, the password is hello, and lS-IS SNP and LSP will spread normally.

outing domain authentication is primarily used to allow level-1 and Level-2 SNP and LSP messages to carry authentication information during delivery.

NO.306 The following statement about OSPF route filtering is incorrect.( Single choice questions).

In the NSSA area, filtering for external route ingestion and advertisement can be configured on ASBR or ABR

Filtering for the three types of LSAs needs to be configured on the ABR across OSPF regions

Interface-based filtering of LSAs allows all LSAs in the inbound and outbound directions except grace LSAs

Based on the link state database, when calculating routes, the fiter-policy import command is used, which only affects the route addition in the route table, and has no effect on the OSPF link state database

NO.307 You expect to deploy multicast video applications on your private, on-premises network. To achieve this, you need to have a private multicast IP address in your network.
So which range of IP addresses can be used? (Single choice questions).

239000-239255255255

241.000-241.255255255

224000-224255255255

240000-254255255255

226000-226255255255

NO.308 When running OSPFv3 on a Huawei router, the OSPFv3 process automatically selects an interface address as the process router id

True

False

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