H12-831_V1.0 Exam Questions

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

In the scenario shown in the figure, if you want to implement the backdoor link as a backup link, you can use the Sham Link function. Which of the following descriptions about Sham...

In the Hub&Spoke network shown in the figure, in order to achieve correct routing transmission, the administrator must manually configure which of the following commands on the Hub...

A message with a destination IP address of 4.4.4.4 forwarded by R1 is transmitted in an MPLS network. Part of the LSP information of R3 is shown in the figure. Which of the followi...

The debug output information of an OSPF router is shown in the figure. Which of the following is the Router ID of this router?

The debug output information of an OSPF router is shown in the figure. Which of the following is the router ID of this router?

As shown in the figure, the VRRP virtual IP address of network R1 and R2 is configured as 10.0.12.254. After the configuration is completed, the network engineer checks the VRRP st...

If the cutover preparation is insufficient, which of the following problems may occur? (Multiple choice)

Based on the locally maintained LSDB, the device running the OSPF protocol calculates the shortest path tree with itself as the root through the SPF algorithm, and determines the n...

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...

Each OSPFv3 router generates a Link-LSA for each link, describing information such as the link- local address, IPv6 prefix address, and interface number on this link, and provides...

In the IS-IS IPv6 network shown in the figure, the interfaces of R1 and R2 both have two IPv6 addresses. Since the prefix lengths of the IPv6 addresses of R1 and R2 are different,...

MPLS supports carrying multiple network protocol services, including unicast IPv4 services, multicast IPv4 services, unicast IPv6 services, multicast IPv6 services, etc.

An enterprise network is shown in the figure. If CE2 is dual-owned by PE2 and PE3, a Type 3 LSA routing loop may occur. The loop can be prevented by setting the dn-bit-set disable...

In an MPLS network, an LSR ID is used to uniquely identify an LSR (Label Switching Router). The LSR ID defaults to the IP address of a physical interface of the device and can be m...

In the network shown in the figure, the DHCP Server function is enabled on the R2 GE0/0/0 interface, and the address pool is the interface address pool. The R1 GE0/0/0 and GE0/0/1...

As the scale of the enterprise network continues to expand, a certain enterprise plans to move the dispersed servers to the same computer room for unified management. At a certain...

Huawei NetEngine AR6120 and AR6121 both have two service interface card slots, and these two slots can be merged into one slot.

In order to ensure the reliable transmission of LDP messages, LDP's Discovery messages, Session messages, Advertisement messages and Notification messages all use TCP transmission.

OSPFv3 messages are encapsulated in IPv6 messages and can be sent in unicast, multicast and broadcast forms.

The entries in the MAC address table are divided into dynamic entries, static entries and black hole entries. At the same time, there is also a service type of MAC address entry in...

When a large number of MAC addresses drift in the network in a short period of time, it is generally because there is a loop in the network. The Layer 2 loop can be eliminated thro...

When an IP packet enters the MPLS domain, the ingress node checks the Tunnel ID corresponding to the source IP address. When the Tunnel ID is not 0x0, the ingress node performs MPL...

The path that IP packets pass through in the MPLS network is called the label switched path LSP. LSP is a bidirectional path that indicates the direction of data flow transmission.

An enterprise network is shown in the figure. If CE2 is dual-owned by PE2 and PE3, a Type 5 LSA routing loop may occur. The loop can be prevented by setting the route-tag command o...

I-SPF and PRC can improve the convergence speed of IS-IS routes. They both recalculate only the changed routes. The difference is that PRC does not need to calculate the node path,...

The AS-path attribute is a private attribute of the BGP protocol. The "if-match as- path-filter" command is only valid for BGP routes.

In a large BGP network, there are many peers, which makes configuration and maintenance extremely inconvenient. For BGP peers with the same configuration, they can be added to a BG...

In the IS-IS network shown in the figure, R1 introduces the default route through the "default- route-advertise always level-1" command. Which device is the next hop corresponding...

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. Within AS 65000, R1, R3, R4,...

In the network shown in the figure, R1, R2, R4, and R5 run IS-IS in area 49.0001, and R3 and R6 run IS-IS in area 49.0002. Within AS 65000, R1, R3, R4, and R6 establish IBGP neighb...

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...

In the IS-IS IPv6 network shown in the figure, all routers have multi-topology enabled. The IPv6 address of the R4 Loopback0 interface is 2000::4/128. By default, which of the foll...

In the IS-IS IPv6 network shown in the figure, all routers have multi-topology enabled. The IPv6 address of the R4 Loopback0 interface is 2000::4/128, and "ipv6 summary 2000::64 le...

Which of the following descriptions about OSPFv3 are correct? (Multiple choice)

The Router-LSA generated by a router is shown in the figure. Based on this LSA, which of the following descriptions are correct? (Multiple choice)

IPSG can defend against IP address spoofing attacks. Which of the following descriptions of IPSG are wrong? (Multiple choice)

In a certain MPLS network, the LSP information of R1 and R2 is shown in the figure. At this time, the administrator enters the command ping 3.3.3.3 on R1. Which of the following de...

In a BGP/MPLS IP VPN network, the configuration of some PE options is to update VPN routes through Update messages. Which of the following information will be included in the Updat...

As shown in the figure, an administrator configures static LSP between routers R1~R4. Which of the following configuration options are correct? (Multiple choice)

When the administrator enters the command label advertise explicit-null on the egress device in the MPLS network, which of the following labels is assigned to the penultimate hop d...

An MPLS label is a 20-bit local identifier. Its label space is divided into special labels, static shared label space, and dynamic signaling protocol label space. Which of the foll...

The normal operation environment of the equipment is the prerequisite for ensuring the normal operation of the equipment. When checking the equipment operation environment, which o...

After troubleshooting the problem, the network engineer wrote a troubleshooting report. He simplified the actual networking into the network shown in the figure. R1 and R2 both hav...

In the network shown in the figure, PC1 and PC2 are connected to the same switch and belong to the same VLAN. Which of the following reasons may cause PC1 and PC2 to be unable to c...

Network engineers found that the multicast client could not receive multicast data correctly, so they suspected that the group address set by the multicast server was wrong. Which...

The network logic architecture of a cutover project is shown in the figure. The purpose of the cutover is to expand a network device R4 between R2 and R3. The OSPF protocol runs be...

In the network shown in the figure, the DHCP Server function is enabled on the R2 GE0/0/0 interface, and the address pool is the global address pool. The R1 GE0/0/0 and GE0/0/1 int...

In the OSPF network shown in the figure, the link cost value has been marked in the figure, R1 enables OSPF IP FRR, then which of the following descriptions is wrong?

The LSP fast diffusion feature can speed up the diffusion of LSP. Under normal circumstances, when IS-IS receives an LSP from another router, if this LSP is newer than the correspo...