Free H12-831 Exam Dumps Preview

On the OSPF network shown in the figure, the cost values of links are marked. OSPF IP FRR is enabled on R1, and the maximum load-balancing 8 command is configured in the OSPF process.
If a service passes through the path R1 R5 R3 to reach 10.0.3.3/32, which of the following is the backup outbound interface for the service?

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?

The default MPLS label publishing mode, label distribution control mode and label retention mode of Huawei routers are respectively

Network administrator A wants to use the AS-Path Fiter to match the routing entries of the BGP routing attribute AS_PATH [100 200 300]. Network administrator A sorts out the four configurations in the figure.
Which of the following configurations can satisfy network administrator A's requirements?
Require?

After the cutover acceptance is completeD.
what work still needs to be performed in the closing stage?

As shown in the figure, OSPF is deployed in a campus, and Area 1 is deployed as an NSSA area. In the case of missing header, R2 will automatically generate a missing header route of Type 7 LSA and flood it in the NSSA area.

On the network shown in the figure, PC1 and PC2 are connected to the same switch (SW1) and belong to the same VLAN.

Which of the following are possible causes of a communication failure between PC1 and PC2?

Options:

A campus has deployed IPv6 for service testing. There are 4 routers in the network, running 0SPFv3 to implement IPv6 network interconnection. As shown in the figure, an engineer checked the LSDB of R2 and intercepted one of the Link-LSAs.

Which of the following statements is true about the description of this LSA?

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?

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

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.

What is the LSA whose flooding range is the entire autonomous system in SPFV3?

A company purchased private lines from two operators. In order to optimize the lines, the company used the 6GP protocol to learn from two route entries that operate off. However, after the enterprise found that this configuration, the traffic of the port route increased greatly, and the network engineering arrangement.

After investigation, it was found that the traffic of the two operators was passed to each other through the enterprise egress router. Therefore, the enterprise intends to use the routing strategy so that the traffic of the packets of different carriers is no longer passed to each other.
Is the configuration in the following figure correct?

As shown in the figure, Client1 and Client2 act as clients of RR1 and RR2 at the same time, and RR1 and RR2 are in the same.

In a Cluster, R introduces 10 routes. It is assumed that the configuration of B, CP is correct.
Neighbor relations have been established Now, how many routing entries exist in the BGP routing table of Client2?

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?

In the hub-spoke networking shown in the figure, which of the following commands must be configured on the Hub-PE to ensure correct route transmission?

As shown, all routers run OSPF.

Which of the following statements is correct?

Configure ipv6 preference in IS-IS protocol view. The function of this command is to configure the priority of IPv6 routes generated by IS-Is protocol.

As shown in the figure, R1, R2, R3, and R4 are in the same PLs domain, and LDP is used to distribute IPLS labels between devices. R4 is the Egress LSR of the FEC 4.4.4.0/24. If you want to achieve R1 access

4.4.4.0/24, R4 does not need to query the label table but can know the forwarding priority of the data, then the outgoing label of R3 for the FEC should be:____. (Please fill in the Arabic numerals directly, without symbols)

Service routes of an enterprise are transmitted on the network. Some configurations of PE1 and PE2 are shown in the figure.

Which of the following LSAs may CE2 receive?

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.

As shown in the figure, on the R1 router, the network administrator can control the path of the traffic entering AS100 after modifying the value of the routing entry sent to R2 through the routing policy.

On the OSPFv3 network shown in the figure, area 1 is a common area.

Which of the following statements are true?

On the IS-IS network shown in the figure, R1 imports a default route using the default-route-advertise always level-1 command.

Which of the following statements are true?

Which of the following descriptions is correct about configuring static LSPs in MPLS networks?

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?

display interface GEO/O/O once, and found that the Total Eror count (the total number of error packets at the physical layer of the interface) is not correct. . At this time, it can be concluded that the current time and
fall has not disappeared.

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?

According to this figure, it can be known that in VLAN 300, from 17:22:38 to 17:22.44,00e0- fc3d-3bdB. 0 MA, C flaps occurred on 2020-06-04.

An engineer uses two routers to test IPv6 services, and simulates the interconnection between the headquarters and branches by running BGP4+. The logical topology of the network is shown in the figure.
Regarding the transmission of IPv6 routes between the two devices, which of the following Is a statement wrong?

Which of the following statements about the MP_REA, CH_NLRI attribute of BGP4+ is correct?

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

What is the default aging time of the MA, C address table of Huawei switches?

On the network shown in the figure, IS-IS runs on R1, R2, R4, and R5, and the area ID is 49.0001. IS-IS runs on R3 and R6, and the area ID is 49.0002. The import-route isis level-2 into level-1 command is configured on R2 and R5. In AS 65000, R1, R3, R4, and R6 each establish iBGP peer relationships with R2 and R5. R2 and R5 are RR (Route Reflectors), and R1, R4, R3, and R6 are the iBGP peer relationship clients. The iBGP peer relationship ID is 10.0.0.X/32, where X is the number of the iBGP router. R1 and R4 import the external route 192.168.1.0/24 to BGP through the import-route command, and R3 and R6 import the external route 192.168.2.0/24 to BGP through the import-route command.

Which of the following statements are true?

On a BGP/MPLS IP VPN network, which of the following are carried when a PE advertises VPNv4 routes?

For high reliability purposes, the following LDP messages are transmitted through TCP: discovery messages, session messages, advertisement messages, and notification messages.

On the OSPF network shown in the figure, area 1 and area 2 are common areas. The IP address of Loopback0 on R5 is 10.0.5.5/32, and OSPF is enabled on this interface.
If the abr-summary 10.0.5.0 255.255.255.0 command is run in area 2 (where R1 resides), which of the following routers have the route 10.0.5.0/24 in their routing tables?

(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

What fields are added in Update in order to advertise IPv6 routes in BGP4+?

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

OSPF is deployed in a campus to achieve network interworking, and OSPF is also enabled on the GEO/0/2 interface of R3. Area1 is deployed as an NSSA area, and the device addresses are shown in the figure. An engineer configures a static route on R3 to access the loopback interface address of R4, and imports the static route in the 0SPF process. At this point, in the Type5 LSA received by R1, the forwarding address (FA) is____. (Note: Please fill in the IP address without mask)

Regarding the MPLS forwarding process, the description of Ingress node forwarding is correct:

On the OSPF network shown in the figure, area 1 is a common area, area 2 is a stub area, and area 3 is an NSSA. R5 imports an external route 10.0.5.5/32.
Given this, which of the following routers does not have the route 10.0.5.5/32 in its routing table?

In CE multi-homing scenarios, if BGP AS number substitution is enabled on PEs, you can run the peer soo

command on the EBGP peers of the PEs and CE to configure the Site of Origin (SoO) attribute to prevent loops.

In BGP/MPLS IP VPN, the 0SPF multi-instance process uses the DN bit to prevent Type5 LSA loops.

The figure shows the LSP information of R1 and R3 on an MPLS network. An administrator runs the ping - a 1.1.1.1 3.3.3.3 command on R1.
Given this, which of the following statements is true?

As shown below:

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

MPLS can carry multiple network protocol services, including unicast IPv4 services, multicast IPv4 services, unicast IPv6 services, and multicast IPv6 services.

A campus has deployed IPv6 for service testing. There are 4 routers (R1, 22, R3 and R4) in this network, running 0SPFV3 to realize the interconnection of IPv6 network. A new router R5 needs to be connected to the network for testing. An engineer introduces a direct route in the OSPFVV3 process of R4 so that devices in the campus network can access the GE0/0/1 port address of R5.

Which of the following statements about the scene is true of?

The ORF function of BGP can control the routing entries sent by neighbors. In order to achieve this purpose, the BGP router will send the list of routes to be filtered to the neighbors.

Which tool is generally used to send the list to the neighbors?

On the IS-IS IPv6 network shown in the figure, multi-topology is enabled on all routers.
The IPv6 address of Loopback0 on R4 is 2000::4/128. The command ipv6 summary 2000::/64 level-1-2 is
configured in the IS-IS process of R4.

Which of the following statements is false?

The cutover risk assessment mainly considers which of the following aspects?

FILL IN THE BLANK

In the hub-spoke networking shown in the figure, to ensure correct route transmission, an administrator must manually configure the peer 10.1.2.1 _____ command in the IPv4 address family view of the BGP-
VPN_out instance on the Hub-PE.

(Enter the answer in lowercase letters only.)

What is the command to adjust the link cost of an IS-IS interface?

R1 forwards a packet with the destination IP address of 4.4.4.4 on an MPLS network.

Some LSP (Label Switched Path) information of R3 is shown in the figure.
During packet transmission, which of the following devices perform MPLS label operations?

Regarding MP-BGP, which of the following descriptions is wrong?

The figure shows information about VPN1 on a PE (Provider Edge) router in a BGP/MPLS IP VPN network.

When the VPNv4 route corresponding to VPN1 is advertised to the remote PE, which VPNs of the remote PE will accept the route?

VPN1 Configuration:

ip vpn-instance VPN1

ipv4-family

route-distinguisher 100:1

vpn-target 100:1 200:1 300:1 export-extcommunity

VPN Import Policies on the Remote PE:

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

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

FILL IN THE BLANK

On the network shown in the figure, OSPF is deployed on R1 and R2. IS-IS is deployed on R2 and R3. To enable R1 to obtain the route to 10.0.3.3/32, ISIS routes are imported into OSPF on R2. In this case, the next hop address to 10.0.3.3/32 in the routing table of R1 is_____.

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.

During the process of viewing the debug input through the SSH terminal, there is a lot of pop-up information.

Which of the following operations can make the monitor terminal no longer pop up the debug message?

MPLS-straight is slower than IP forwarding.