H12-831_V1.0 Exam Questions

In the OSPF network shown in the figure, area 1 is an NSSA area, area 2 is a common area, and R4 imports the external route 10.0.4.4/32. The Router ID of each device is 10.0.XX, wh...

In the IS-IS network shown in the figure, R1 introduces the default route through the "default- route-advertise always level-1" command. Which of the following descriptions is corr...

In the OSPF network shown in the figure, the area number has been marked in the figure, where area 1, area 2, and area 3 are all common areas. The IP address of the R5 Loopback0 in...

In the OSPFv3 network shown in the figure, routers are interconnected using Ethernet links. By default, the number of DRs in this network is which of the following?

VLAN aggregation is deployed in a switching network, where Sub-VLAN 2 and Sub- VLAN 3 are added to Super-VLAN 10. If hosts in different Sub-VLANs want to communicate with each othe...

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 the OSPFV3 network shown in the figure, area 1 is a normal area. R2 generates an Intex-Area-Prefix-LSA to describe the route of a network segment in the area. This type of LSA e...

A network engineer of an enterprise wants to save IP addresses and isolate Layer 2 mutual access by deploying VLAN aggregation and MUX VLAN. In order to save VLAN resources, the en...

When the network changes, the DHCP Snooping binding table will not age immediately, so it needs to be cleared manually. Which of the following commands can the administrator use to...

A certain enterprise network is shown in the figure, in which CE and PE communicate with each other by deploying EBGP. At this time, CE1 transmits a private network route to PE1. w...

When the administrator statically configures the Ingress node of LSP, it is recommended to establish a static LSP by specifying the next hop to ensure that there is a routing entry...

Which of the following information can be judged by observing the device indicator light and can also be viewed through the command line? (Multiple choice)

In the IS-IS network shown in the figure, R1 introduces the default route through the "default- route-advertise always level-1" command. Which of the following routers have a defau...

Which of the following is not included in the OSPF Hello message?

Advanced ACL defines rules based on information such as source IP address, destination IP address, IP protocol type, TCP source/destination port, UDP source/destination port number...

A BGP router receives a BGP route whose AS_Path attribute is "100200300". If the router wants to reject this route, which of the following as-path-filters can it use? (Multiple cho...

When VPN traffic is transmitted in a typical BGP/MPLS IP VPN network, it usually contains two layers of labels. Which of the following descriptions about these two layers of labels...

In an HPLS network, when a transit device receives an MPLS message and prepares to perform label switching, it finds that the label value after switching is 0. Which of the followi...

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

The network logical architecture of a cutover project is shown in the figure. The purpose of the cutover is to enable terminals located in different geographical locations to acces...

The Router ID of R1 is 10.0.1.1. In the LSDB of R1, the LSA shown in the figure is seen. The network engineer makes the following inferences based on the LSA. Which one is wrong?

In the OSPFv3 network shown in the figure, area 1 is the Totally Stub area, area 2 is the normal area, and area 3 is the Totally NSSA area. The IPv6 address of the R6 Loopback0 int...

The LSP information generated by an IS-IS router is shown in the figure. Which of the following conclusions cannot be inferred from the LSP information?

In the network shown in the figure, IS-IS IPv6 runs between R2, R6, and R3, and the IPv6 address of R6 Looback0 interface is 2000::6/128. Other links run OSPFv3, area 1 is a Stub a...

The R2 device has the file information shown in the figure. When the network engineer uses the "dir|include4" command to view the file information, which of the following files wil...

Trap information is a notification generated by the system when a fault is detected. It mainly records system status information such as faults. If the network administrator wants...

An enterprise service route is transmitted in the network, and the partial configuration of PE1 and PE2 is shown in the figure. In this scenario, which of the following types of LS...

As shown in the figure, VLAN aggregation function is deployed in a switching network, in which Sub-VLAN 10 and Sub-VLAN 20 are both added to Super-VLAN 100. which of the following...

In the network shown in the figure, R1 and R2 establish an EBGP neighbor relationship through a directly connected interface, and the BFD function is enabled in the BGP process. Th...

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 0SP network shown in the figure, area 1 and area 2 are both common areas. The IP address of R5's Loopback0 interface is 10.0.5.5/32, and OSPF is enabled on this interface. T...

In the OSPF network shown in the figure, the link cost value has been marked in the figure. R1 has enabled OSPF IP FRR and configured the "maximum load-balancing 1" command in the...

The "set-overload" command is configured in the process of an IS-IS router. By default, how long does it take for the router to exit the overload state after restarting?

In the Hub&Spoke network shown in the figure, in order to achieve correct routing transmission, the administrator must manually configure the command peer10.1.2.1() (all letters ar...

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...

The concepts of RD and RT are introduced in BGP/MPLS IP VPN network. Which of the following descriptions about RD and RT are wrong? (Multiple choice)

The business route of an enterprise is transmitted in the network, and part of the configuration of PE1 and PE2 is shown in the figure. At this time, CE1 adds a new business networ...

LSR (Label Switching Router) discovers LDP peers through the LDP discovery mechanism and establishes LDP sessions. Which of the following descriptions of LDP sessions are correct?...

The three devices in the MPLS network have successfully established an LDP session. At this time, which of the following information does the administrator configure or modify to c...

The Route-LSA generated by a router is shown in the figure. Which of the following descriptions are correct? (Multiple choice)

In the IS-IS IPv6 network shown in the figure, check the LSDB on R1. From the output information, it can be inferred that R1 is the DIS.

IS-IS LSP fragments are identified by the LSP Number field in the LSP ID, which is 4 bits long. Therefore, an IS-IS process can generate a maximum of 256 LSP fragments, and the amo...

By default, the IS-IS LSP refresh interval is which of the following?

In the IS-IS network shown in the figure, R1 introduces the default route through the "default- route-advertise always level-1" command. Which of the following descriptions are cor...

Which of the following phenomena may occur when a layer 2 loop appears in the network? (Multiple choice)

In the network shown in the figure, the IP addresses planned for the interconnection interfaces of R1 and R2 have been marked in the figure, but R1 and R2 cannot be Pine connected....

As shown in the figure, this is an MPLS message with multiple layers of labels nested. Which of the following is the correct value of the S field at the three positions S1, S2, and...

There are multiple types of MAC address entries on the switch. Which of the following types of entries can discard messages by matching the source MAC address of the received messa...

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

When there are multiple equal-cost routes to the same destination address, BGP equal-cost load balancing can be used to achieve the purpose of balancing traffic. However, IBGP rout...