D Class IP address range 239000-239255255,What does 255 do? Radio

Link-local multicast address, where traffic that uses that address includes network control messages and that address range is only the multicast address segment used by the E. routing protocol

SSM multicast address, the multicast address segment is valid for the whole network

Any legitimate multicast traffic and multicast application can adopt this address C. Locally managed multicast address, which is valid only locally

Link-local multicast address, where traffic that uses that address includes network control messages and that address range is only the multicast address segment used by the E. routing protocol

What are the benefits of using WRED?( Multi-select)

Avoid TCP global synchronization

Provides a small bandwidth guarantee

Can avoid UDP occupying most of the bandwidth when congested

In an Hw IP multicast networkówhich of the following multicast features are associated with (*, G) table entries? ( Multiple select)

PIM bidirectional E. Share the tree

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?

HW1 injects a type 7 default route into zone 1

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

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

HW1 injects a Type 7 default route into Zone 0

HW1 injects a type 7 default route into zone 1

HW1 injects a Type 3 default route into Zone 1

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

The following description of CBWFQ is correct?

CBwFQ can be configured with MQC and service-policy is applied to the exit direction

CBwFQ can be used for both egress and inbound interfaces

CBwFQ is delayed, jittered and bandwidth guaranteed for traffic catch

CBWFQ can only be configured in hierarchical policies-maps. The parent policy-map performs supervision and the child policy-map performs

In an HW MPLS network, what parameters are used to define a forwarding equivalent class??

RSVP requests resource reservation

In which of the following cases, RSTP refreshes the MAC address table?( Multi-select)

When a topology change notification is received

CE when the port state transitions from Disking to Forwarding

When the port state transitions from Forwarding to Disking

Only when the port state transitions from Listening to Disccarding

When a topology change notification is received

When the status of a port changes

CE when the port state transitions from Disking to Forwarding

In a data communication session between two hosts, which level does the session layer of the oSI model of the host on one end communicate with the osl mode of the host on the other end?

Communicate with the conversation layer on the other end B Communicate with the application layer at the other end

Communicate with the data link layer at the other end

Communicate with the physical layer at the other end

Communicate with the presentation layer at the other end

Router HW cannot access hosts in the remote network, router HW runs routing protocols and only pings the remote file server address 105401 on router HW with extensions through a default route remote network , the result of ping on the router HW is rendered as 'requ.' est time out', according to the above description, the error in the following analysis is ?

Router HW does not have a legitimate router to reach the destination address

The next hop router for router HW did not reach the destination address

Router HW does not have a legitimate router to reach the destination address

Ping is successful, but congestion occurs on the path to the destination address

There is a firewall in the remote destination network, and the destination address can be reached without releasing ICMP traffic E. ICMP packets, but the destination device fails to reply

Regarding IPv6 over IP4(19) road, the following statement is correct

The ISATAP tunnel determines the destination IPV4 address of the tunnel based on the destination IP6 address.

All automatic tunnels encapsulate data in the same way.

The 6to4 automatic tunnel requires the use of a specific IP6 address segment, and the assigned address segment is preceded by 3ffe::/16

When configuring manual tunneling on the VRP platform, a Tunnel interface is generally created; When configuring automatic tunneling, a Vrua-Template interface is usually created

The ISATAP tunnel determines the destination IPV4 address of the tunnel based on the destination IP6 address.

All automatic tunnels encapsulate data in the same way.

Automatic tunneling has great advantages over manual tunneling, and manual tunneling will be phased out

The following description of the link state protocol is plausible?

Fast convergence and high CPU utilization

CPU utilization is high and loops are easy to generate

Slow convergence and low CPU utilization

Fast convergence and low CPU utilization

Fast convergence and high CPU utilization

You try to trace a remote Internet address on your PC, but the traceroute stops after it reaches a router, and currently, the router should be in the incoming direction of the serial interface With an ACL "rule5 permit tcp source any destination any", you need to add which of the following ACLs to the router for traceoute to work

Rule 10 permit icmp source any destination any icmp tti-exceeded rule permit icmp source any icmp-type port-unreachableE. Rule 10 permit udp source any destination any rule 15 permit icmp source any destination any icmp-type protocolunreachable

Rule 10 permit icmp source any destination any icmp-typettl-exceeded rule 15 permit source any destination any icmp-type echo-reply

Rule 10 permit icmp source any destination any icmp-type echo rule 15 permiticmp source any destination any icmp-type net-unreachable

Rule 10 permit tcp source any destination any

Rule 10 permit icmp source any destination any icmp tti-exceeded rule permit icmp source any icmp-type port-unreachableE. Rule 10 permit udp source any destination any rule 15 permit icmp source any destination any icmp-type protocolunreachable

If there is a switch running RSTP, which interface on that switch sends the BPDU with the Proposal logo??

in the forwarding state. The specified port in a non-forwarding state

The root port in the Blocking state

What are the common ways to learn routing in BGP? ( Multi-select)

receives neighbor routing information

BGP routing for other AS is introduced

If you need to configure routing policies on one router. Which of the following parameters does an administrator use to route when deploying a routing policy?( Multiple select).

Identification of a specific terminal system

The following statement about isis a route leak of ISIS is correct?

Route disclosure for ISIS avoids suboptimal paths.

Route leaks for ISIS must be deployed on Level-1 routers

Route disclosure for ISIS is turned on by default.

Route disclosure for ISIS avoids suboptimal paths.

Route leaks for ISIS can only be applied to IPv4 environments.

What is correct below about LDP synchronization in ISIS?

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

LDP synchronization can be turned on globally.

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

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

LDP synchronization can be deployed on the Loopback interface.

What are the characteristics of Syslog information?

The transmission of Syslog messages is not secure

The transmission of Syslog messages is not acknowledgable

The transmission of Syslog messages is unreliable

The transmission of Syslog messages is not secure

The transmission of Sysiog messages is reliable

The transmission of Syslog messages is confirmable

The transmission of Syslog messages is secure

The transmission of Syslog messages is not acknowledgable

The transmission of Syslog messages is unreliable

You need to access the subnets of different VPNs in the VXLAN network , such as information about one subnet Bottom: RT=10:1ORT.100:1000 Export 1000 in EVPN instance and RT-100-100 in VPN instance.Which of the following can be basketed for another subnet?

1000:1000 appears in VPN instances

EVPN implements 1000:1000 export

All EVPN instances are 1000:1000

1000:1000 appears in VPN instances

EVPN implements 1000:1000 export

Regarding the DSCP field, the following statement is incorrect: single selection

When the value of DSCP is EF, it indicates that the data belongs to the accelerated forwarding class.

The DSCP value can be 0, and packets use the default forwarding mechanism when 0

When the value of DSCP is EF, it indicates that the data belongs to the accelerated forwarding class.

In addition to indicating the priority of the data, DSCP can also indicate the probability of data being discarded.

DSCP divides data into 8 priorities.

The following description of VLANs in Ethernet is correct?

VLANs can be extended through QinQ technology.

VLANs do not support bulk creation on devices

The range of VLANs is 0 to 4096

The default reserved VLANs for Huawei devices are 4000~4010

VLANs can be extended through QinQ technology.

In a multicast network running PIM-SM mode, how does the router choose the upstream interface?

looks up the outgoing interface corresponding to the RP address in the unicast routing table

Interfaces to which multicast group members are directly connected

Find the outbound interface corresponding to the mapping proxy in the unicast routing table

The interface that is fast to the PIlM Join message

Interface for sending PIM Heilo messages.

Auto-negotiate mode is to obtain the maximum interface rate and operating mode, the network administrator configures all Ethernet interface rates of a working switch to 10OMbps, and the operating mode is configured as Full-duplex, when a network card is configured After the auto- negotiate workstation is connected to the switch, the negotiation result is that the interface rate is 10OMbps and the working mode is half-duplex, which of the following explanations is the most reasonable for this phenomenon?

The problem is on the workstation's NIC, mostly due to the aging of the NIC driver on the workstation , which causes the workstation NIC to learn the interface rate and operating mode configured on the switch

Port rate negotiation is negotiated through the initial port sending FLP , and the operating mode is not negotiated through FLP

STP initializes the port into the blocking state, causing auto-negotiation to fail, so the port should be configured as an edge port

At higher port rates and operating modes, the workstation's network interface card cannot be configured as auto-negotiate

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

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

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

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.

The switch can suppress traffic by suppressing traffic and extremely other failures can affect operations, which of the following traffic suppression configurations is the wrong configuration

[Quidway] wan 10 [Quidway-wan10] multicast-suppression 1000 [Quidway-van10] quit

[Qudway ineface gigabtethemnet /0'1[Quidway-GigabitEfthemetO0/O/1]multicast-suppression 80TQuidway-GigabitEthernet0/0/1]quit

Quidway inteface gigabiethenet ou0/1[Quidway-GigabtEthernet/0/1J,broadcast-suppression 80 IQuidway-GigabitEthernet//1]Jqut

[Quidway] icmp rate-limit enable [Quidway] icmp rate-limit total threshold 20

[Quidway ] wan 10 [Quidway-wani0] broadcast-suppression 1000 [Quidway-van10] quit

Huawei H12-891 Practice Test 13 - Free Online Exam Prep & Questions

Vxlan is based on UDP encapsulation, which encapsulates Ethernet data frames on top of UDP in IP packets, so it is called MAC in UDP encapsulation

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