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

Questions 4

Which of the following DNS resource records are legitimate?

Options:

A.

FQDN

B.

NS

C.

PTR

D.

MX

E.

A

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Questions 5

??? aggregate ipv4-address { mask/masklength }[as-set lattribute-policy route-policy-namel ldetail-suppressedlorigin-policy route-

in policy-name2[suppress3policy route-policy-name3], multiple parameters can be used to influence summary routes and their results. The correct description about the command is ?( Multiple choice questions).

Options:

A.

If As-set is configured, the A S_PATH of the aggregate route contains ass path information for all specific routes in case the route loop is blocked

B.

If Suppress-policy is configured, aggregate routes are also generated, and the if-match clause in Route-policy is used to pick suppressed detail routes. Detail routes that match Route-policy are still advertised to other BGP neighbors

C.

If Origin-policy is configured, only detail routes that match Route-policy can participate in aggregation

D.

If You configure The Interface-policy, you can change the properties of the aggregate route

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Questions 6

Is the following GR description of ISIS correct?

Options:

A.

The GR feature of AISIS is turned on by default.

B.

ISIS's GR has a total of four timers.

C.

ISIS's GR notifies of events and maintains neighbor relationships through CSNP messages.

D.

ISIS's GR defines a new TLV structure to support this feature.

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Questions 7

If you have a LOCAL AREA NETWORK running 8021D Spanning Tree Protocol, the non-root switch does not receive which parameter under the root switch?

Options:

A.

MaxAge

B.

Root cost

C.

Forward delay

D.

Hold time

E.

Hello time

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Questions 8

Is the following description of the OSPFv3 message correct?

Options:

A.

The interface ID of the sending interface must be included in the A Hello packet

B.

The LSACK message contains LSA header information to confirm the receipt of LSU packets

C.

The LSR message contains the complete LSA header information for requesting an update to the LSA

D.

Hello messages and the Option field for DD messages extends to 24-bit

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Questions 9

Users hope to be able to make the router forward and select messages according to their own defined policies on the basis of traditional route forwarding, and can adopt policy routing, and the following description of policy routing is incorrect

Options:

A.

Policy Routing can set the next hop IP address

B.

Policy Routing cannot be set in the next statement DSCP

C.

Policy Routing cannot be used to set IP precedence

D.

Policy-based routing can be used to match message lengths

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Questions 10

There is an existing router running OSPF HWL, HW1 interface serial0 is published in zone 1, configure commands under the OSPF process nssa default-route-advertise, based on the previous description, infers which of the following options are correct?

Options:

A.

When HW1 injects a default route into Zone 1, HW1's local route table can not contain a single default route

B.

HW1 injects a Type 7 default route into Zone 0

C.

HW1 injects a type 7 default route into zone 1

D.

HW1 injects a Type 3 default route into Zone 1

E.

When HW1 injects a default route into zone 1, HW1's local route table needs to answer the default route

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Questions 11

If an administrator wants to manage certain routes on the router during operations, the following tools are listed below. These routes can be flagged so that administrators can configure policies

Options:

A.

If the BGP protocol is running, the route is marked with the community attribute

B.

Use ACLs to tag routes on the router.

C.

Use the Tag value to mark the route on the router.

D.

Use ipprefix to tag routes on the router.

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Questions 12

Regarding how the device handles messages in the MPLS network model, what is the following description of the error? A. The label forwarding path LSP is determined and established by various protocols during the forwarding of messages. There is certainly no stripping of the label on the B. LSR.

Both C. LER and LSR are labeled.

D. For IP packets entering the MPLS domain, the device discards them.

Options:

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Questions 13

Regarding the FTP protocol, is it correct in the description below?

Options:

A.

In ftP-style, the client completes the initialization of the TCP session for control and data

B.

In ftP Activee, the server side tells the client which port it expects to send data on by commanding "PORT"

C.

FTP always uses a TCP session to transmit control information and data information

D.

FTP always uses the TCP port to establish a data session and ICP port 21 to establish a control session

E.

FTP always uses TCP port 21 to establish a data session and TCP port 20 to establish a control session

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Questions 14

Which of the following LSAs propagate in a single region only?

Options:

A.

Router LSA

B.

Summary LSA

C.

Network LSA

D.

AS External LSA

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Questions 15

In the IS-IS broadcast network type, when establishing an adjacency relationship, if the router interface priority is set to 0, it will not participate in the dis election

Options:

A.

True

B.

False

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Questions 16

The switch role in the stacking system does not include ?

A From the switch

B. Candidate Switch

C. Standby Switch

D. Primary Switch

Options:

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Questions 17

When the IPv6 address of a host is configured with a stateless address configuration, and other parameters other than the address are obtained through DHCPv6, how to set the M and 0 bits in the RA message ?

Options:

A.

M=10=1

B.

M=10=0

C.

M=1 0=0

D.

M=00=1

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Questions 18

What does RT do in MPLS VPN? Multiple choice questions).

Options:

A.

Allows the peer PE to decide which VPNv4 routes to import into a particular VRF

B.

Allows peer PE to decide which VPNv4 routes not to import into a particular VRF

C.

Allows the peer CE to decide which VPNv4 routes to import into a particular VRF

D.

Allows the peer CE to decide which VPNv4 routes not to import into a particular VRF

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Questions 19

When you deploy BGP/MPLSIPVPN, when two VPNs have a common site, the common site must not use overlapping address spaces with the other sites of the two VPNs.

Options:

A.

TRUE

B.

FALSE ?:B

499The series description for configuring static lSPs in MPLS networks is correct?

C.

When an LSR is Ingress LSR, only configure Out Label, which ranges from 16-1048575

D.

When an LSR is a Transit LSR, you need to configure both In Label and Out label, both in the range of 16-1023

E.

When an LSR is TransitLSR, you need to configure both ln Label and Out Label, both of which are 161023 The Out Label ranges from 16 to 1048575

F.

When an LSR is An Egyptian LSR, only in Label needs to be configured, ranging from 16-1023

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Questions 20

Between two directly attached devices that have established an IBGP neighbor, execute the shutdown command to close the interface of one of the devices. The BGP connection is not immediately disconnected.

Options:

A.

TRUE

B.

FALSE

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Questions 21

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?

Options:

A.

automatically switch NAT to PAT after the Internet

B.

Subsequent intranet users will not be able to access the Internet

C.

Synchronize messages to other NAT conversion devices for NAT conversion

D.

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

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Questions 22

s the following description of THE MUX VLA N in huawei switches correct?

Options:

A.

MUX VLAN ??Principal VI-AN ?Subordinate VI-AN ???Separate VLAN ? Isolate VLAN

B.

Each Separate VLAN can bind multiple Principal VLANs

C.

Under the same VLAN, muX VLANs can be mixed with SuperVLANs

D.

The Principal port can pass the answer to all ends within the MUX VLAN

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Questions 23

Which of the following options is correct?

Options:

A.

Unicast and broadcasting cannot effectively achieve data transmission between one source and multiple destinations on P2MP, but multicast technology can

B.

Multicast technology is able to reduce redundant traffic, so network bandwidth can be saved C. Multicast technology is used for "-to-many" applications

C.

Since multicast is based on TCP to establish a connection, multicast technology can ensure the reliable transmission of data

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Questions 24

The following statement about IPv6 Over VXLAN is wrong as ?( Single choice questions).

Options:

A.

The tunnel between VXLAN Layer 2 and Layer 3 gateways is an IPv4 network.

B.

IPv6 over VXLAN solves the problem of insufficient IP address resources for end tenants.

C.

IPv6 Over VLANs do not generate ND table entries.

D.

IPv6 over VXLAN means that the Overlay network of the VXLAN is an IPv6 network.

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Questions 25

Regarding the Stub region and the NSSA region of the OSPF protocol , the following statement is incorrect with a single choice

Options:

A.

Neither the Stub region nor the NSSA region allows injection of Type4 LSA

B.

Type5 LSA injection is not allowed in the Stub region, while Type5LSA injection is allowed in the NSSA region

C.

Type7LSA injection is not allowed in the Stub region, while Type7LSA injection is allowed in the NSSA region

D.

Both the Stub region and the NSSA region allow injection of Type3 LSA

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Questions 26

CMPv6 uses the Type field to identify the message type, and according to the value of the type field, we can divide the ICMPv6 message into two categories, one is the error message and the other is the information message

Options:

A.

True

B.

False

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Questions 27

Communityflter has two types of basic group nature filters and advanced group property filters. Which of the following filters makes the Advanced Group Genus Filter more flexible than the Basic Group Attribute Filter to match group attributes?

Options:

A.

IP-prefix

B.

AS-path-filter

C.

Regular-expression

D.

ACL

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Questions 28

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

Options:

A.

OSPFv3 can only establish a security alliance SA using manual mode

B.

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

C.

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

D.

The OSPFv3 protocol header removes the Type and Automation fields

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Questions 29

Traditional BGP-4 can only manage IP4 unicast routing information, and MP-BGP extends BGP-4 to provide support for multiple network layer protocols. Among them, MP-BGP's support feature for IPv6 unicast networks is called BGP4+, BGP4+ via NextHop The route next hop address information is carried by the attribute.

Options:

A.

TRUE

B.

FALSE

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Questions 30

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

Options:

A.

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

B.

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

C.

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

D.

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

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Questions 31

A company's two-layer phase network architecture as shown in the figure, when the engineer is configured to find that the business between departments can not communicate, through the command to view the status of the equipment as follows, please determine the possible causes?

Options:

A.

The BPDU interval between switches is not configured

B.

The Transition VLAN mapping between the handover machines is not configured to be caused

C.

The Revislon Level configuration is inconsistent between switches

D.

Inconsistent Registry Name configuration between text exchange machines

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Questions 32

Configuration under a certain interface: isis timer hello 5 level-2, the following statement is correct?

Options:

A.

The hello packets sent at level-1 and Leve1-2 are both 5s

B.

The hello packets sent at level-1 are sent at 5s interval

C.

The level-2 hello packet send interval is 5s

D.

The CSNP packet sending interval for this interface Level-2 is 5S

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Questions 33

When configuring the source NAT and having no pat configuration parameters, which of the following statements is true?( Radio) A Perform destination IP address and destination port translation

B. Only source P address translation occurs

C. Only destination IP address translation occurs

D. Simultaneous source P address and source port translation

Options:

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Questions 34

What kind of scenario can use AS-path-filter?( Multiple select).

Options:

A.

A Filters routes received from BGP neighbors based on the AS PATH attribute carried by the route, such as the command peer X.x.x.x as path-filter import

B.

The apply clause in Route policy

C.

Filter routes sent to BGP neighbors based on the AS PATH attribute that the route carries. For example, the command peer x.x.x.x as path-filter export

D.

The if-match clause in Route-policy

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Questions 35

When the ABR is a type 5/7 LSA switch router for the NSSA zone, then the ABR can be paired to Category 7 LSA is a derivative of 5 LSAs for aggregation.

Options:

A.

True

B.

False

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Questions 36

VPN instances are also known as VPN routing forwarding tables (PN Routing and Forwarding table), and there are multiple route forwarding tables on the PE, including a public route forwarding table, one or more VPN route forwarding tables, and VPNv4 Route forwarding table.

Options:

A.

False

B.

TRUE

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Questions 37

Router HW enables OSPF and router HW has the role of ABR and is configured with abr-summary, so which class LSA Will it be aggregated?( Multi-select) (confirmed).

Options:

A.

1 ?LSA

B.

2 ?LSA

C.

3 ?LSA

D.

4 ?LSA

E.

5 ?LSA

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Questions 38

Regular expressions can be used for Community-filter and AS-path-filter definition attribute types for route filtering.

Options:

A.

True

B.

False

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Questions 39

The following description of LDP reliability is incorrectly ?( Radio).

Options:

A.

LGP GR takes advantage of the high difference between the LS forwarding plane and the control plane to realize that the device forwards without interruption when the protocol is restarted or the master-standby is reversed

B.

Manually configured LDP FRR policies default to 32-bit backup routes that trigger LDP to establish backup LSPs

C.

LLDPFRR also allows LSPs to be generated for tag mappings from non-optimal next hops, and as a live LSP backup, supervising forwarding table entries

D.

LDP and IGP linkage, the need for IGP has been routed to release, to ensure that LDP and LGP path consistent

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Questions 40

In an IPv6 network, two nodes A and B are neighbors to each other if node A sends to node B NS message, if Node B receives the message and then replies to the NA message, then on Node A On the view, the neighbor status will be marked as What?

Options:

A.

Reachable

B.

Incomplete

C.

Constant

D.

Probe Answer

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Questions 41

A campus deploys OSPF to achieve network interoperability, and an engineer configures R2 as shown in the figure, then the following description of the LSA in the OSPF network is wrong

Options:

A.

There is no Type3 LsA flooding within Areal

B.

There is no Type3 LSA flooding in Area2

C.

There is Type5 LSA flooding within Areal

D.

Area2 contains Type5 LSA generic adverb

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Questions 42

The following statement about the IS-IS protocol is incorrect?

Options:

A.

The IS-IS protocol is a link-state protocol that runs between AS

B.

The IS-IS protocol supports CLNP networks

C.

Messages for the IS-IS protocol are encapsulated directly by the data link layer

D.

The IS-IS protocol supports IP network ad

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Questions 43

View the details of all VPN instances on a network device and the results are as follows, which of the following statements is wrong?( Multiple choice questions).

Options:

A.

The total number of instances that enable the IPv6 address family in the VPN configured on this side is 1 .

C:\Users\wk\Desktop\mudassar\Untitled.png

B.

VPN-Instance vpna does not receive VPN routes with an RT of 2:1.

C.

The GigabitEthernet 1/0/0 interface is tied to the VPN-Instance vpna

D.

The device assigns a label to each route of the VPN-Instance vpna.

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Questions 44

The following description of the GVRP interface registration mode in Huawei switches is correct?

Options:

A.

When fixed registration mode is selected, the interface cannot propagate dynamic VLANs

B.

When the normal registration mode is selected, allow the interface to dynamically register and unregister the VLAN. Logout here includes deleting dynamically learned VLANs and VLANs created natively by the administrator

C.

When the interface layer two operating mode must be hybird

D.

GVRP when the register mode with forbidden is selected, there are four types of interface registration mode

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Questions 45

Cross-device link aggregation realizes the back-to-back transmission of data traffic and the mutual spare of the heap member switches, but due to the limited bandwidth of the heap cable between the heap devices, the forwarding efficiency can be improved in the following ways?

Options:

A.

Enable traffic to be forwarded locally first

B.

Connect the stacking device via a stacking card

C.

Configure the stacking system MAC address switching

D.

Enables the stacking multi-master check function

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Questions 46

What is correct below about LDP synchronization in ISIS?

Options:

A.

LDP synchronization can be turned on globally.

B.

LDP establishes neighbors faster than ISIS, so LDP synchronization is turned off by default

C.

LDP synchronization avoids traffic loss when the active-standby link is switched.

D.

LDP synchronization can be deployed on the Loopback interface.

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Questions 47

As shown in the figure, all routing diagrams declare the loopback address in OSPF, where R2 does not return the address is 10022/32, it is advisable to tell AraD. The R3 loopback address is 10033/321001.1.0/24 external routing, in order to reduce the burden on the RI router, the configuration command is as follows:( Multiple choice questions)[Rlip ip-prefix 1 permit 001.1.024 [RLIJospfl [RL-ospf-1]filter-policy ip-prefix l import please ask the following description is correct?

Options:

A.

In the P route table of router R1, there is no external route to 1001.1.0/24

B.

In the IP routing table of router R1, there is an external route to 1001.1.0/24

C.

In the IP routing table of router R1, there is no loopback route to R2

D.

In the IP routing table of router RI, there is no loopback route to R3

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Questions 48

If the receive cache of a switch's gigabit Ethernet interface is full, what protocol does the switch use to know that the remote interface delays sending data frames for a period of time?

Options:

A.

8023af

B.

8021U

C.

8021D

D.

8023

E.

8023Z

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Questions 49

The following description of BGP ring protection is correct

Options:

A.

The BGP router does not announce any updates from the EBGP peer to other EBGP peers

B.

BGP routers that are not RR do not announce any updates from the IBGP peer to other IBGP peers

C.

Any routing information from the IBGP peer is advertised to the other IBGP peers

D.

, through the AS-path attribute, discard any update information received from the EBGP peer that contains its own AS number in the AS-path attribute

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Questions 50

After you divide an interface of the firewall into the Untrust security domain, the interface belongs to the Untrust zone and no longer belongs to the Local zone.

Options:

A.

TRUE

B.

FALSE

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Questions 51

The following is a description of how BFD sessions are established, which is the wrong one

Options:

A.

The system distinguishes between static BFD sessions and dynamic BPD sessions by dividing the identifier area Dynamically assign this landmark identifier

B.

BFD sessions can only be established dynamically

C.

Static configuration of BFD session refers to manual configuration of BFD session parameters through the command line, including local identifiers and remote identifiers

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Questions 52

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

Options:

A.

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

B.

Each Separate VLAN must be bound to a Principal VLAN

C.

Separate VLANs can communicate with all VLANs within a MUX VLAN

D.

Each Group VLAN must be bound to a Principal VLAN

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Questions 53

Two routers connected through a firewall cannot establish a BGP neighbor relationship. What causes it?

Options:

A.

EBGP Multi-hop is not configured

B.

The firewall did not release IP protocol number 89

C.

Firewalls that do not have an open UDP port number of 179

D.

BGP neighbors must form a Layer 2 adjacency

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Questions 54

What are the characteristics of Syslog information?

Options:

A.

The transmission of Syslog messages is not secure

B.

The transmission of Sysiog messages is reliable

C.

The transmission of Syslog messages is confirmable

D.

The transmission of Syslog messages is secure

E.

The transmission of Syslog messages is not acknowledgable

F.

The transmission of Syslog messages is unreliable

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Questions 55

In MPLSVPN, in order to distinguish between IPv4 prefixes that use the same address space, the RD value is added to the IPv4 address, and the following options are described correctly as ?

Options:

A.

RD can be used to control the publication of VPN routing information

B.

On a PE device, each VPN instance corresponds to an RD value, and the RD value must be unique on the same PE device

C.

RD is encapsulated in the Update message as an extended community attribute of BGP during delivery

D.

After the PE receives an IPv4 route from CE, it adds an RD to the route to IPv4 that translates to a globally unique VPN-IPv4 route and publishes it on the public network

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Questions 56

The Next Header field information exists only in the header of an IPv6 message and is used to indicate whether an extended header exists for IPv6

Options:

A.

True

B.

False

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Questions 57

The most effective way to view device warnings through the CLI is ?

Options:

A.

Display alarm

B.

Display current-configuration

C.

Display interface brief

D.

Display clock

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Questions 58

Users within a typical VPN can only communicate with each other, not with Internet users, and with Internet. But VPN individual sites may have access to internet's needs. The correct description of the implementation of VPN interconnection with internet is ?( Multiple choice questions).

Options:

A.

is implemented on the user side, and the CE is directly connected to the Internet. Each user site can be connected to the Internet separately, that is, the CE of each site is configured with a default route to the Internet.

B.

Implementing a complex implementation on PE and having security implications, PE devices may be subject to Dos attacks on the Internet.

C.

Implemented on PE, the PE device issues a default route to the CE to the Internet and adds a default route to the VPN instance routing table pointing to the Internet Gateway o

D.

Implemented on the user side, the implementation method is simple, and the public network and private network routes are isolated, safe and reliable.

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Questions 59

There is a concept of FEC-Forwarding Equivalence Class in MPLS, so what criteria can FEC not allocate based on?

Options:

A.

Application Protocol

B.

Class of Service

C.

Destination Address

D.

Fragment offset

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Questions 60

Which of the following attacks are DoS (Denial of servioe) attacks?( Multiple choice question)

Options:

A.

Single packet attack

B.

Source P address spoofing attack

C.

Man-in-the-middle attack

D.

Flood Attack

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Questions 61

Router RI and Router R2 run BGP. Both routers are in the AS65234 The route for router R2 exists in the BGP routing table of the router RI, but not in the IP routing table of the router RI . So what causes the problem to occur? (Single Choice Questions).

Options:

A.

Synchronization is turned off

B.

The B. BGP neighbor relationship is Down

C.

Router R1 does not enable BGP Multi-hop

D.

Routing is not optimal

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Questions 62

As shown in the figure, all routers run OSPF, which is correct in the following statement:

Options:

A.

Both R2 and Zone 0 generate Router LSA

B.

R2 generates Router LSA only in Zone 0

C.

R2 forwards the R1-generated Router LSA to R3

D.

R2 Forwards the R3-generated Router LSA to R1

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Questions 63

Regarding the description of the permanent multicast address, the error is ?

Options:

A.

All routers running the PIM protocol listen on 22400100

B.

All routers listen on 224002

C.

All hosts and routers in the network segment listen on 224001

D.

All routers running the OSPF protocol listen to 224005

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Questions 64

The switch SWA and SWB are connected together by 2 Ethernet links, where the switch SWA has the following interface configuration:

Options:

A.

Without changing the current configuration, GigabitEthernet1/0/1 and GigabitEthernet1/0/2 can join the same aggregation group

B.

Because of the different VLANs allowed, GigabitEthernet1/0/1 and GigabitEthernet1/0/2 cannot join the same aggregation group

C.

After link clustering is configured on both SWA and SWB, if MSTP is enabled on the switches SWA and SWB Both GigabitEthernetl1/0/1 and GigabitEthernetl/O/2 are the forwarding status of MSTP

D.

Only if the configuration of GigabitEthernet 1/0/2 is changed to match GigabitEthernet 1/0/1 can the two join the same aggregation group

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Questions 65

If the Interface Sticky MAC function is enabled, what is the number of MAC addresses that the interface learns by default?

Options:

A.

15

B.

10

C.

5

D.

1

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Questions 66

The correct statement about the IGMP proxy is ? Multi-select

Options:

A.

The downstream interface of the IGMP proxy device generates multicast relay table items

B.

IGMP proxy can detect the link status with the linkage through the information of the member host joining/leaving the multicast group, and realize the rapid switching of the primary and standby device links

C.

IGMP proxy is typically deployed on devices between hosts that are members of the access device

The

D.

IGMP proxy device cannot send query messages to downstream member hosts in place of the IGMP queryer to maintain group membership

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Questions 67

MSTP switches treat RSTP switches as MSTP domains, MSTP, which are formed by a single switch The interchange resolves the RSTBPDU to MSTBPDU, where IRPC is 0

Options:

A.

True

B.

False

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Questions 68

In order for routers at both ends of the IPv6 over lPv4 manual tunnel to exchange routing information, OSPV3 can be enabled on the tunnel, osPFv3 will be able to form a normal neighbor relationship, and the tunnel interface will be treated as a P2P link interface.

Options:

A.

TRUE

B.

FALSE

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Questions 69

Regarding Route Policy, is the following description correct?

Options:

A.

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

B.

The table entries pernit::0 Less an equal 128 indicate that all IPV6 routes are allowed through

C.

If more than one node is defined in Route one policy, there should be at least one node in each node that matches permit

D.

Route one policy filters only the default route

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Questions 70

Regarding MP-BGP, the following description is wrong?

Options:

A.

Radio A. MP-BGP needs to assign a private label to the VPNv4 route

B.

PE and CE are routed through BGP interaction, you need to create a BGP process on ce for each VPN instance

C.

The message type and VPNv4 routing publishing policy for MP-BGP are the same as for BGP-4

D.

MP-BGP advertises VPNv4 through two attributes, MP_REACH_NLRI and MP_UNREACH_NLRI Route

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Questions 71

Assume that BGP/MPLSIPVVPN, OSPF, LDP, and static routing protocols are already enabled on the PE router . Which of the following protocols need to enable GR on PE in order to get NSF functionality? (Multiple choice questions).

Options:

A.

BGP

B.

Static circuit

C.

OSPF

D.

MPLS LDP

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Questions 72

Which of the following options can affect the establishment of IBGP neighbors?

Options:

A.

iBGP-Multi-hop is not configured

B.

Authentication is unsuccessful

C.

IGP routing is not passable

D.

BGP protocol version inconsistencies

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Questions 73

The network administrator defines a traffic policing policy as follows:

Options:

A.

256K bytes

B.

48128 bytes

C.

32K bytes

D.

80128 bytes

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Questions 74

The duplicate address detection feature for NDP in the following description is incorrect?

Options:

A.

IPv6 unicast address is called a tentative address after it is assigned to an interface and before it is detected by duplicate addresses

B.

Duplicate address detection is implemented via RS and RA messages

C.

IPv6 duplicate address detection technology is similar to free ARP in IPv4

D.

The interface needs to perform duplicate address detection before enabling any of the unicast IPv6 addresses

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Questions 75

The Layer 3 logical interface on XLAN L3 Gateway that enables communication between different VXLAN virtual networks is ?

Options:

A.

Layer 2 sub-interface

B.

NVE interface

C.

VBDIF interface

D.

VLANIF interface

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Questions 76

RTA is the source DR router, RTB is the RP router, and the multicast source sends multicast data to the RTA, but the PIM is not visible on the RTB Register the multicast source to which the message is registered, then the possible causes are ?

Options:

A.

Multicast network statically configures RP, while RTA router does not statically configure RP

B.

The RP elected by RTA is not an RTB

C.

RTB to RTA has no unicast routing, causing the RTB to fail RPF checks for the source

D.

The multicast network dynamically elects the RP instead RTA failed RPF check for BSR

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Questions 77

The authentication types of ISIS include interface authentication, zone authentication, and routed domain authentication

Options:

A.

True

B.

False

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Questions 78

As shown in the figure, the PPP link between R1 and R2 is not in the same network segment, but the R1 and R2 direct connectors can communicate, and the Ethernet link cannot communicate under the same planning, why?

Options:

A.

The interconnect POS ports of R1 and R2 learn the 24-bit subnet route of each other's direct connection ports through IPCP

B.

The interconnect POS ports of R1 and R2 learn the 32-bit host route for each other's direct connections through IPCP

C.

The interconnect POS port of RI and R2, through LCP learns the MAC address of the opposite termination , does not need to use ARP to request the MAC address

D.

The data packets of the interconnect POS ports of R1 and R2 do not need to encapsulate ethernet headers and do not need to use ARP to request MAC addresses

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Questions 79

The Option field in OSPEv3 appears in all LSAs

Options:

A.

True

B.

False

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Questions 80

In addition to stateless address autoconfiguration, IPV6 devices can also obtain addresses, gateways, DNS, and other information through DHCPv6

Options:

A.

True

B.

False

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Questions 81

ipv6 link-local addresses can be generated through stateless autoconfiguration

Options:

A.

TRUE

B.

FALSE

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Questions 82

If you have a Huawei switch running the STP protocol, and now connect the GO/O/17 interface and the GO/O/18 interface of the switch through a cable, then the scenario described below is correct ?( Single choice questions).

Options:

A.

Both the G0/0/17 interface and the GO/0/18 interface enter the Forwarding state

B.

Both the Go/0/17 interface and the G0/0/18 interface enter the Disccarding state

C.

The Go/0/17 interface enters the Blocking state

D.

The GO/0/18 interface will continuously change back and forth between the Listening state and the Learning state

E.

GO/0/18 interface will enter the Disking state

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Questions 83

Regarding the description of the BGP neighbor, the error is:

Options:

A.

BGP routers that support autodiscovery neighbors

B.

BGP establishing neighbors must be configured with MD5 authentication

C.

BGP needs to establish a UDP connection before establishing a neighbor

D.

BGP to establish a neighbor relationship needs to first interact with the link state information

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Questions 84

Compared to IPV4 multicast, which of the following descriptions is the characteristic of IP6 multicast?

Options:

A.

IPv6 multicast does not contain MSDP and dense mode

B.

The first 8bit IPV6 multicast address is always FF(11111111).

C.

IPv6 multicast clients use IGMPv3 to join multicast groups

D.

IPv6 multicast load sharing extends the multicast routing rules and is completely independent of RPF check

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Questions 85

There is an existing switch running the RSTP protocol. If the network topology changes, what happens to the Layer 2 forwarding table that is automatically learned by the switch?

Options:

A.

All table entries are dropped

B.

Except for the table entry related to the edge port that is not deleted, all other table entries are deleted

C.

Only table entries related to the port that received the TC message are dropped

D.

If the aging time is set to 15 seconds, entries that exceed the aging time are deleted

E.

Table entries are dropped except for table entries related to edge ports and table entries related to ports that receive TC messages

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Questions 86

If multiple candidate RPs are configured in a multicast group, which of the following parameters does the RP that elect the group from multiple candidate RPs need to be compared?

Options:

A.

The mask length of the group range for the C-RP service that matches the group address that the user joined

B.

C-RP priority

C.

The IP address of the C. C-RP interface Number of

D.

C-RP interface

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Questions 87

0SPFV2 is running on the IPV4 network IGP: OSPF3 is running in the IPV6 network, OSPF35 OSPFV2 has the same message type. Includes hello messages, DOD messages, LSR messages, LAU messages, and SAX messages about OSPP The following statement is correct?

Options:

A.

The hello packet of OSPFv3 carries the IPV6 address prefix of the router interface

B.

OSPFv3 uses the authentication field of the packet header to complete the packet authentication

C.

OSPFv3 uses the link-local address as the source address for sending packets, which can be forwarded outside the range of the originating link

D.

OSPFv3 sends OSPFv3 packet using the IPV6 multicast addresses FF02::5 and FF02

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Questions 88

There is an existing router running OSPF connected to Zone 0 and Zone 1 You configured Zone 1 as a stub zone, what classes does LSA that only operates inside Zone 1 include?

Options:

A.

7 ? LSA

B.

1 ? LSA ? 2 ? LSA

C.

I LSA,2 LSA 5 LSA

D.

3 ? LSA ? 4 ? LSA

E.

1 LSA,2 LSA 3 LSA

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Questions 89

When there are multiple redundant links in an IS-IS network, multiple equivalent routes may occur. Regarding equivalent routing within an IS-IS network, which of the following descriptions is wrong?

Options:

A.

When the number of equivalent routes present in the networking is greater than the number configured by the command, and these routes have the same priority, the next hop device System IlD large routes are preferred for load sharing

B.

After you configure the equivalent routing priority, when the IS-S device forwards traffic to the destination segment, it will not use load sharing, but forward the traffic to the next hop with the highest priority

C.

For each of the equivalent routes, you can assign a priority, with the highest priority routes preferred and the rest as backup routes

D.

If load sharing is configured, traffic is evenly distributed across each link

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Questions 90

For a non-directly connected EBGP neighbor to establish properly, what configurations must be included as follows?

Options:

A.

peer ebgp-max-hop

B.

peer ignore

C.

peer as-number

D.

peer connect-interface

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Questions 91

As shown in the following topology, EBGP is running between AS100, AS200, AS300, AS400, and the neighbor relationship is established S400 When you receive a BGP route from ASI00 for a 1.1.1.1/32 network segment, is the path order recorded in the ASPath properties correct?

Options:

A.

10,200,3

B.

400,300,200,100

C.

100, 200,300, 400

D.

300, 200,100

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Exam Code: H12-891_V1.0
Exam Name: HCIE-Datacom V1.0
Last Update: Dec 22, 2024
Questions: 610

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