H12-831_V1.0 HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Question and Answers

Which of the following features affects BGP neighbor establishment?

What is the meaning of display current-configuration I include vlan command?

What is the Router-ID of OSPFv3?

IPSG is a source IP address filtering technology based on Layer 3 interfaces. It prevents malicious hosts from forging authorized hosts' IP addresses to access authorized network resources.

In the hub-spoke networking shown in the figure, the Hub-PE can be configured to allow repetitive local AS numbers for correct route transmission.

[According to this picture, Peimen can judge?

cR3>display ipv6 routing-table protocol isis

Both VLAN aggregation and MUX VLAN are deployed on the enterprise network shown in the figure, and all switch interfaces connected to terminals are access interfaces. Given this, match PCI to PC4 with the hosts or servers that they can access on the network. (Note: A host cannot be matched with itself. For example, PCI cannot match PCI.) (Tokens can be reused.)

When 0SPFV2 evolves to 0SPFV3, the LSA format and function are exactly the same, but the network layer in the LSA address from IPv4 to IPv6o

On the OSPFv3 network shown in the figure, OSPFv3 parameters use default values. The LSDB is checked on one of the devices. The router IDs of R1, R3, and R4 are 10.0.1.1, 10.0.3.3, and 10.0.4.4, respectively. The Origin Router part of some LSAs is hidden. Complete this part. (Tokens can be reused.)

Regarding BGP/MPLS IPVPN data forwarding, which of the following descriptions is wrong?

An administrator runs the display mpls Isp command to view LSPs on a device. The command output is shown in the figure. Which of the following statements are true?

The following six tools cannot be used to match BGP routing entries?

In addition to virtual connections, what type of IPv6 address is the source IPv6 address of OSPFv3's Hello text?

by executing___________The command can completely isolate the second and third layer users of different ports on the same LAN and cannot communicate. (Please use English and lowercase letters to complete the command, and the command cannot be abbreviated)

As shown in the figure, in a medium-sized network, BGP generally deploys dual RRs to improve R reliability. When deploying dual RRs, the Cluster IDs of the two RRs are generally set to be the same. The reason for this is

How many bits are there in the label field of PLS?

(Drag and drop question) The configuration shown in the figure is performed on R2 to filter all incoming routes. Suppose there is an entry on R1

AS_Path attribute is [100 200 300 400] BGP routes need to be sent to R2, please help network administrators in

Adjust the AS order in the AS_Path attribute of the route on R1 to ensure that the route entry will not be routed by R2

route^policy AS-PATH permit node 10 if-match as-path-filter BGP route-policy AS-PATH deny node 20 ip as-path-filter BGP permit A[A2]00 400 100_

route-policy AS-PATH permit node 10 if-match ip-prefix BGP

apply as-pathoverwrite

ip ip-prefix BGP permit 10.0.0.0 24

IEIF expands the functions of OSPF by taking advantage of the strong expansibility of OSPF. To enable it to support IPv6 networks, the expanded protocol is called OSPFv3. OSPFv3 is compatible with OSPFv2.

What is the purpose of configuring LSP fragmentation on an IS-IS device?

ping -a Xc Ys z -vpn-instance M 10.5.16.2, the meaning of this command is:

The OSPF protocol is run between CE and PE, when CE1 advertises the route of its site to CE2. Which of the following descriptions is incorrect?

If end-to-end QoS is configured on an MPLS network, the penultimate hop device on the MPLS network can pop MPLS labels from packets based on penultimate hop popping (PHP), so that the egress node can process packets based on the QoS priority in inner packets.

An interface of a switch is in error-down state. A possible cause is that the average rate of broadcast packets received by the interface exceeds the upper threshold set by the administrator for storm control.

Which of the following statements about MPLS header TTL is correct?

According to this picture, you can judge

After port isolation is configured on a switch, hosts in the same VLAN cannot communicate with each other at Layer 2 or Layer 3 by default.

In what ways can log information be viewed:

As its network scale expands, an enterprise plans to move scattered servers to the same equipment room for unified management. During hardware migration, network engineers do not need to perform device commissioning and therefore do not need to work out a migration solution.

When there are multiple redundant links in the IS-S network, multiple equal-cost routes may appear. Which of the following statements is false about equal-cost routing within an IS-IS network?

If technology migration on the network affects the services running on the live network, strictly follow the preset operation process and risk control measures during the implementation of the technology migration project. Generally, this type of project is defined as a migration project. Which of the following operations performed on the live network belongs to a non-migration project?

If the display ospfv3 peer verbose command is run to check OSPFv3 neighbor information, the command output contains information such as the peer router ID, global unicast address of the peer interface, and neighbor status.

According to this picture, cooked I'] can be judged?

Which of the following reasons may cause the hosts in the same VLAN of the LAN to fail to communicate with each other?

To protect a device against the attacks of forged BGP messages, you can configure GTSM to check whether the TTL value in the IP message header is within the specified range. If the peer x.x.x.x valid-ttl-hops 100 command is configured on a device, the valid TTL value range of the detected message is [155, 255].

When configuring the DHCP Relay function on the device, the VLAN ANIF interface of the relay connection client must be bound with a DHCP server group, and the IP address of the proxy DHCP server must be configured in the bound DHCP server group.

Which of the following is the least likely cause of a VRRP backup group dual-active failure?

The security protection actions that a secure MA, C address can perform does not include which of the following?

Which of the following BGP routing attributes cannot control BGP routing?

BGP4+ carries the next hop address of the IPv6 route through the Next Hop attribute in the Update packet. (Moved into Attribute 14)

In an MPLS VPN network, data packets are forwarded when they enter the public network. will be encapsulated with two layers of MPLS labels

sign. Which of the following options describes the processing of the packet correctly:

About the difference between NSR and NSF, which is correct?

SFFv2 is an IGP running on an IPv4 network: 0SPFV3 is an IGP running on an IPv6 network. Compared with 0SPFV2, SPFV3 has a similar LSA type, but has slightly different functions. Which of the following is not included in the LSA type of 0SPFV3?

The figure shows the file information on R2. When a network engineer runs the dir | exclude 1 command to view the file information, which of the following files will be displayed?

Run the display ip interface GEO/D/D command to view statistics about ping packets received on the interface.

MPLS is called Multi-Protocol Label Switching. Regarding the label description in MPLS, the correct one is:

R1 and R2 use directly connected interfaces to establish an EBGP peer relationship. R1 imports 2000:: 1/128 to BGR By default, which of the following is the next hop of the route from R2 to 2000:: 1/128?

What check items can be set by IPSG?

Assuming that the neighbor relationship between BGP routers has been established successfully, the configuration on R1 is shown in the figure. ask for R1

Which router can the route entry 10.10.10.0/24 be delivered to the farthest?

AS 200

bgp 100

peer 13.X3 as-number 300

peer B3.33 connect * interface LoopBackO peer 3.33.3 route-policy COMMUNITY e»porx peer 3333 next >hop-local

peer Xl.3.3 advertise-cofnmunity

network 10.10.T0.0 24

route^poktcy COMMUNITY permit node 10 prefix COMMUNITY spply cocYWTUiiMty route-policy COMMUNITY permit node 20 «p ip prefix COMMUNITr index 10 permit

R1 executes the operation ping -a lO.l.Ll 10.5.16.2, what is the meaning of this command?

According to this picture, we can judge that R4 is on?

When MPLS is deployed in the network and the network layer protocol is IP, the route corresponding to the FEC must exist in the IP routing table of the LSR, otherwise the label forwarding entry of the FEC will not take effect.

As shown below:

Which of the following are advantages of VLAN aggregation?

The configuration shown is performed on R2 to filter all incoming routes. Suppose there is a BGP route with the AS_Path attribute of [100200300400] on R1 that needs to be sent to R2. Please help the network administrator to adjust the AS order in the AS_Path attribute of the route on R1 to ensure that the route entry will not be filtered by the routing policy of R2____, ____, ____, ____.

100 This space corresponds to the [A] space in the routing policy

200 This space corresponds to the [B] space in the routing policy

300 This space corresponds to the [C] space in the routing policy

400 This space corresponds to the [D] space in the routing policy

From this figure, we can conclude that

Which of the following is included in the routine collection of basic equipment information?

As shown in the figure, SF is enabled on all interfaces of the router, the cost value of the link is marked in the figure, and the Loopback0 interface of R2 is advertised in area 1, then the cost value of R1 reaching 10.0.2.2/32 is?

If faced with a complex network failure, and it is estimated that the troubleshooting cannot be completed in a short period of time, and the user urgently needs to restore the availability of the network, then the correct approach is.

Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEs

interest

IS-/S supports multi-instance and multi-process, that is, one IS-S router. Multiple VPN instances can be configured with multiple

IS-IS process associated. Are the following descriptions of IS-JS multi-instance and multi-process correct?

On a BGP/MPLS IP VPN network, VPNv4 routes carry the export RT. Which of the following attributes is used by MP-BGP to carry the export RT?

To speed up the detection of link failures in an IS-IS network, you can associate IS-IS with BFD.

As shown in the figure, OSPF is enabled on all the routers. The IP address marked in the figure is the IP address of the loopbackO interface of the device. The LoopbackO of R1 and R2 is advertised in area 1, the LoopbackO of R4 is advertised in area 0, and the LoopbackO of R3 and R5E is advertised in area 0. In area 2, which of the following IP addresses can ping each other?

Which of the following statements about the multicast address used by 0SPFv3 is correct?

From this figure, it can be known that

On a broadcast network, routers (including non-DIS routers) of the same level on a network segment can establish neighbor relationships. In the implementation of BFD for IS-IS, however, BFD sessions are established only between a DIS and non-DIS routers, not between non-DIS routers.

The rollback operation of project cutover can be temporarily determined according to the situation during cutover, and no advance plan is required.

In OSPF, the A, BR will convert all type 7 L SAs in the NSSA area to type 5 L SAs.

Qing technology is a technology to expand VLAN space. It can achieve the function of expanding Vian space by adding a layer of 8D2.1Q Tag on the basis of 8Q2.12 tag message. Which of the following statements about qinq is false?

As shown in the figure, the operator's BGP/MPLS IP VPN backbone network builds SP through DP. If you want to implement user X

If the two sites communicate through the BGP/MPLS IPVPN network, PE1 and PE2 must use a 32-bit masked loopback interface address to establish an MP-IBGP peer relationship.

On the OSPFv3 network shown in the figure, OSPFv3 is enabled on the interfaces connecting R1, R2, and R3. The router ID of each router is 10.0.X.X, where X is the number of the router. If you check detailed information about an LSA on R3, the command output shows that the LSA is generated by R2 and describes the IPv6 prefix address associated with the Router-LSA.

The routing policy tools that can be used by BGP mainly include Filterpolicy and oRoute-policy.

Fiterpolicy can only filter routes, Rote - policy can only modify routes

Can Huawei equipment perform traffic suppression for Mingbi packets?

Ethernet is a network that supports broadcasting, and once there is a loop in the network, this simple broadcasting mechanism can cause catastrophic consequences. Which of the following phenomena may be caused by loops

On a PIM-SM multicast network, a network engineer finds that multicast clients cannot receive multicast data. Which of the following is not a possible cause of this problem?

After reset isis all is executeD. the IS-Is protocol process needs to be restarted and neighbors need to be re-establisheD. but various IS-IS statistics will not be cleared.

Please match 0SPFv3LSA with its transmission range.

During the test phase of the cutover, the criteria to indicate that the test has been completed are:

BFDLink state detection at the heart (millisecond) level can be achieved.

What are the wrong statements about OSPF's Router LSA and Network LSA?

According to this picture, we can judge?

display ospf Isdb router self-originate OSPF Process 1 with Router ID 10.0.12J Area: 0.0.0.0

Type:Router

Lsid: 10.0.12 J

Adv rtr: 10.0.12.1

Ls age: 312

Len: 36

Options : A, BR E

\seq#:80000013

1chksum : 0xc61c

ILink count: 1

1* Link ID: 10.0.12.2

IData : 10.0.12.1

,Link Type: TransNet

.Metric : 1

Ethernet is a broadcast-enabled network, and once there are loops in the network, this simple factory broadcast mechanism can have disastrous consequences. Which of the following phenomena may be caused by loops?

0SPFV2 is an IGP running on an IPv4 network; 0SPFvV3 is an ICPO running on an IPv6 network the packet types of OSPFV3 and OSPFV2 are the same, including .Hall. message, DD message, LSU message, LSU packets and SAck packets. Which of the following statements is correct about 0SPFV3 packets?

OSPFV2 is an IGP running on an IPv4 network; OSPFV3 is an IGPo running on an IPv6 network. The basic working mechanism of OSPFv3 is the same as that of OSPFV2, such as the election of DR and B, DR. As shown in the figure, an engineer uses 3 routers to test IPv6 services. He wants to realize the interconnection of IPv6 networks by running OSPFV3.

Pass. Which of the following statements about the election of the network DR is correct?

During the daily troubleshooting process, engineers may need to view some alarm information of the device. Run the terminal command to enable the terminal to display the debugging/log/alarm information sent by the information center.

Which of the following operations is not part of the middle stage of dissection?

Which of the following information can the DHCP binding table contain?

You have set IS-IS IPv6 enable under the interface, what is the meaning of this command?

In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes,R1which type ofLAS?

About the difference between NSR and NSF, which is correct?

A network engineer entered the following information when troubleshooting OSPF faults. Based on this, you can judge what causes the adjacency relationship to fail to be established normally?

On the OSPF network shown in the figure, the cost values of links are marked, and OSPF IP FRR is enabled on R1. Which of the following statements is false?

The figure shows the debugging information on an OSPF router. Which of the following is the router ID of this router?

When deploying MPLS/BGP IP VPN, which of the following descriptions is wrong about using BGP to exchange routing information between PEs and CEs?