H12-831_V1.0 Exam Questions

Although adjacency will be formed between routers of the same level on the same network segment of IS-IS in the broadcast network, that is, adjacency will be formed between all non...

In the OSPF network shown in the figure, the area numbers are marked in the figure, where area 1 is the Stub area, area 2 is the Totally NSSA area, and area 3 is the NSSA area. If...

In order to publish the external routes introduced by the NSSA area to other areas, the Type 7 LSA needs to be converted into a Type 5 LSA so that it can be announced in the entire...

BGP's prefix-based ORF (Outbound Route Filtering) capability can send the prefix- based ingress policy configured on the local device to the BGP neighbor through the route refresh...

The BGP protocol supports the use of the "filter-policy acl-number import" command to subtract the received routing information. The value range of acl-number is 2000~3999.

In the OSPFv3 network shown in the figure, area 1 is an NSSA area. R1 enters external route 2000::1/128 into OSPFv3. By default, which of the following types of LSAs does not exist...

The address family information field of MP_REACH_NLRI consists of a 2-byte address family identifier AFI and a 1-byte sub-address family identifier SAFI. When public IPv4 routes ar...

In the OSPFV3 network shown in the figure, OSPFv3 is enabled on the interconnected ports of R1, R2, and R3, and IPv6 global unicast addresses are configured. R1 and R3 are DRs, so...

In the OSPFv3 network shown in the figure, area 1 is a stub area, area 2 is a normal area, and area 3 is an NSSA area. Which of the following types of LSAs will only appear in area...

R4's Router ID is 10.0.4.4. In R4's LSDB, the LSA shown in the figure is seen. The network engineer makes the following inferences based on the LSA. Which of them are correct? (Mul...

As shown in the figure, in order to ensure the normal MACsec session negotiation between the switch Core and ACC_1, the switch AGG_1 is required to support the Layer 2 protocol tra...

The MPLS label is a 20-bit identifier. When the administrator configures a static LSP, the label values of different IPLS devices cannot overlap.

When the administrator uses the static-Isp egress command to configure a static LSP for a device within an MPLS domain, both the incoming label value and the outgoing label value m...

As shown in the figure, CE1 sends VPN1 traffic to PE1. After receiving it, PE1 will forward the VPN traffic. Which of the following descriptions of this scenario are correct? (Mult...

In a BGP/MPLS IP VPN network, when which of the following routing protocols is running between CE and PE, the device can perform route redistribution operations without BGP?

Network engineers can determine whether the link connection is normal by observing the interface indicators of the NetEngine AR6120 on site, but cannot determine whether the interf...

A network engineer needs to write a device upgrade guide. Which of the following should be included in the guide? (Multiple choice)

In the OSPF network shown in the figure, if the cost levels of the links are the same, load sharing is selected. If R1 turns on OSPF IP FRR, the main path for R1 to reach 10.0.3.3/...

OSPF supports equal-cost load balancing. When the number of equal-cost routes in the network is greater than the number of equal-cost routes configured by the maximum load-balancin...

IPSG is a source IP address filtering technology based on the three-layer interface. It can prevent malicious hosts from forging the IP addresses of legitimate hosts to impersonate...

When the switch is configured with the port isolation function, by default, different hosts belonging to the same VLAN cannot communicate at Layer 2 and Layer 3.

In the network shown in the figure, R1 and R2 are connected through SW1. If STP is not enabled on SW1, R1 and R2 cannot ping each other.

In the Hub&Spoke network shown in the figure, in order to achieve correct routing transmission, the administrator must manually configure the command peer 10.1.2.1() in the BGP-VPN...

If an OSPF router is set as a stub router, which of the following is the link metric in the LSA sent by the router?

An administrator uses the display mls ldp session command to check the establishment of the LDP session between R1 and R2. The output information is shown in the figure. Which of t...

The network administrator has deployed the IPSG function on the switch to prevent IP address spoofing attacks. Among the device interfaces shown in the figure, which interfaces wil...

The configuration of a switch interface is as follows. When the average rate of broadcast packets received by the interface reaches which of the following items, storm control acti...

In the OSPFv3 network shown in the figure, area 1 is a normal area. Which of the following descriptions are correct? (Multiple choice)

When an OSPFv3 message is encapsulated in an IPv6 message, which of the following is the value of the Next Header field in the IPv6 message header?

As shown in the figure, an administrator has enabled the port isolation function on the interface of the switch connected to the terminal. In this scenario, which of the following...

In the OSPF network shown in the figure, the network engineer found that the Router ID configuration of R1 and R2 is the same, and both R1 and R2 have introduced the default route...

If the technical migration actions performed on the network will affect the existing network operations, the pre-set operating procedures and risk control measures must be strictly...

R1, R2, and R3 introduce the external network 192.168.1.0/24 into BGP through the import method. Which of the following descriptions are correct by default? (Multiple choice)

In the network shown in the figure, the network engineer found that the path between PC1 and PC2 is not the optimal path, and the cost value of each link is the same. Based on this...

When new features are added or the original performance needs to be optimized, or when problems with the current running version need to be solved, the device needs to be upgraded....

In the network shown in the figure, R1 and R2 are configured with single-hop BFD detection. The network engineer found that the BFD session was Down, so he queried the BFD-related...

When the hardware of a network device fails, you can usually use the replacement method, such as replacing the optical module, replacing the board, replacing the power module, etc....

Generally, large-scale and important cutover projects require setting up an environment in the laboratory for advance verification, which is called laboratory testing. Successful l...

When a device is abnormal or fails, it will generate a variety of information. According to the severity or urgency of the information, the information is divided into 8 levels. Wh...

In a Hub&Spoke network, the route transfer path of VPN1 is shown in the figure. When Hub-PE forwards the VPN1 route to Spoke PE2, which of the following AS_Path is carried?

Which of the following commands must the administrator configure when enabling the MPLS LDP function on the GE0/0/1 interface of the device? (Multiple choice)

In a BGP/MPLS IP VPN network, an MP-EBGP peer relationship needs to be established between the CE devices at two sites to achieve end-to-end delivery of VPN routes.

If the users connected to the switch change frequently, you can convert the dynamic MAC address to a sticky MAC address through port security. In this way, when the user changes, t...

In the OSPFv3 network shown in the figure, area 1 is an NSSA area. R1 imports the external route 2000::1/128 into OSPFv3. Which of the following descriptions are correct by default...

When a network device encounters any of the following faults, the network device will report the error message with OID 1.3.6.1.4.1.2011.5.25.155.31.3 (node name hwOspfv2IntraAreaR...

Use the "display current-configuration | include0.2.*" command on the router to see all the information including "10.0.2" in the current configuration.

In the OSPFv3 network shown in the figure, area 1 is a stub area, area 2 is a common area, and area 3 is an NSSA area. The IPv6 address of the R5 Lopback0 interface is 2000::5/128,...

In the network shown in the figure, R1, R2, R4, and R5 run IS-IS, and the area number is 49.0001. R3 and R6 run IS-IS, and the area number is 49.0002. Inside AS65000, R1, R3, R4, a...

In the network shown in the figure, adjacent routers use directly connected interfaces to establish EBGP neighbor relationships. The Router ID of each device is 10.0.XX, and the AS...

As shown in the figure, in the OSFF network: Area 1 is the NSSA area, Area 2 is the common area, R4 introduces the external route 10.0.0.4/32, and the Router ID of each device is 1...