H12-821_V1.0 Exam Questions

Arrange the following OSPF status changes under the Broadcast network type in the correct order: Exchange, Attempt, Init, Loading, Full, ExStart, 2-way, Down

It is known that the MAC address of an interface is 0A-04-3B-45-1A-03, then the interface ID generated according to the IEEE EUI-64 specification is: ______.

Configure OSPF area 10 as a Totally NSSA NSSA area. The commands that need to be configured are: [Huawei] ospf 1 [Huawei-ospf-1] area 10 [Huawei-ospf-1-area-10] nssa ______

The administrator received the following requirements to design ip as-path-filter. It needs to be realized that the company headquarters (AS 65001) can accept the route originating...

Match the following firewall zone traffic directions with their corresponding zone pairs.

Please match the following BGP messages with their corresponding functions: Open, Update, Notification, Keepalive Announce and revoke BGP routing, Negotiate BGP peer parameters, Ma...

Please match the following mechanisms in PIM-DM with their corresponding concepts: diffusion mechanism, pruning mechanism, assertion mechanism Multicast data packets are flooded to...

If a network received a multicast packet, based on the source address of the packet, it was found that the route existed in the unicast routing table, MBGP routing table and multic...

When a router running IS-IS receives multiple instances of an LSP, please arrange the following operations in the order of the LSP processing mechanism: Check the checksum, Check t...

Match the following VRP concepts with their definitions: MAC address generated based on virtual router ID, ID of the virtual router, IP address of the virtual router, The device wh...

Drag and drop question: In the WLAN three-layer network scenario, the AP will go through the following stages when going online. Please sort them in order: A. AP discovers AC throu...

Which of the following describes the process of allocating VLANs to terminals from the VLAN Pool? Please sort the following steps in the correct order: A. The terminal accesses fro...

Match the following question: Huawei modular devices have multiple hardware modules that provide different functions. Match the following hardware modules with their functions: MPU...

OSPF performs a lookup in its FIB table for a packet. If the tunnel ID in the matching entry is 0, the packet needs to be forwarded through a tunnel, such as an MPLS tunnel.

On an OSPF network, one router with P2P as the network type is directly connected to another router with P2MP as the network type. If the Hello intervals on the two interfaces are...

On an enterprise network, the directly connected interfaces of two OSPF routers are on different network segments and have different masks. To establish an OSPF neighbor relationsh...

In an OSPF network, an algorithm is used to prevent loops within an area, but loops may occur between areas. Therefore, OSPF defines a loop prevention mechanism for inter-area rout...

OSPF has five types of packets, which have the same header format. If the Auth Type field in the packet header is 1, which of the following authentication modes is used?

On an OSPF network, if a router receives an update of an LSA that exists in the local LSDB, the router updates the LSDB and floods the LSA.

IP is designed to achieve OSPF to implement network communication. To ensure data validity and security, all authentication modes supported by OSPF are enabled on routers. In this...

Refer to the provided OSPF network diagram with R1, R2, and a Server in Area 0, where R1's GigabitEthernet0/0/1 interface is configured for OSPF in Area 0 and connected to a segmen...

On an OSPF network, if two routers with the same router ID run in different areas and one of the routers is an ASBR, LSA flapping occurs.

On an OSPF network, routers learn routing information on the entire network by exchanging LSAs. Which of the following values is the LS Age in the LSA header when an LSA is deleted...

OSPF networks are classified into four types of networks by link layer protocol. Match the following link layer protocols with the corresponding OSPF network types: Broadcast, P2P,...

On an IS-IS network, each router can generate LSPs. Which of the following events can trigger the generation of a new LSP? A. Related IS-IS interfaces go up or down. B. Periodic up...

Similar to the OSPF DR, the IS-IS DIS needs to be elected on a broadcast network. However, the OSPF DR is preemptive by default, whereas the IS-IS DIS is not preemptive by default.

On an IS-IS network, routers send LSPs to exchange link state information. LSPs are classified into Level-1 LSPs and Level-2 LSPs and have the same format. Which of the following p...

On an OSPF network, interfaces are classified into four types based on link layer protocols. Which of the following types can interfaces on an IS-IS network be classified into (bas...

Which of the following attributes must be carried when BGP sends route update messages?

A non-client is an iBGP peer that functions as neither an RR nor a client. A non-client must fully mesh connected connections with the RR and all the other non-clients.

In BGP, Keepalive messages are used to maintain BGP peer relationships. When a BGP router receives a Keepalive message from a peer, the BGP router sets the timer to 60s for its Est...

Which of the following statements is true about BGP?

In BGP, Notification messages are used to request peers to resend routing information after routing policies are changed.

When a BGP device sends an Open message to establish a peer connection, which of the following information is carried?

During BGP route summarization configuration, the keyword can be used to suppress all specific routes so that only the summary route is advertised. The summary route contains the A...

Route flapping is applied to complex networks where routes change frequently. Frequent route flapping consumes a large number of bandwidth and CPU resources, and even affects the n...

The next-hop attribute in BGP records the next hop of a route. Similar to the next hop in an IGP, the Next_Hop attribute in BGP must be the IP address of a peer interface.

A BGP router receives an unidentifiable advertising attribute from a peer but does not know whether other devices need the attribute. In this case, the BGP device retains this attr...

When configuring an ACL on a router, you can specify a unique number or name to identify the ACL. Once a named ACL is created, it cannot be modified. You can only delete the named...

ACL is a common tool for matching routes. ACLs are classified into multiple types based on ACL rule functions. An ACL can be identified by a number, and the number range for each t...

ACLs are common matching tool in routing policies. An ACL can be configured on a router to match routes.

QoS and PBR can be applied on device interfaces to filter received and sent packets or control packet forwarding paths.

An IP prefix list is a common matching tool used in routing policies. Which of the following cannot be configured as matching conditions in an IP prefix list on a Huawei router?

When receiving a packet, a Huawei router matches the packet against ACL rules. The default ACL matching order used by the Huawei router is.

Which of the following port roles are added to MSTP?

On an RSTP network, if a port receives an RST BDPU and finds that its buffered RST BDPU is superior to the received RST BDPU, the port discards the received RST BDPU without respon...

Which of the following statements is false about this port role?

In an IPv4 address space, Class D addresses are used for multicast. Among Class D addresses, which of the following is the permanent group address range?

With IGMP snooping, IGMP snooping proxy enables a switch to act as a substitute for an upstream Layer 3 device to send IGMP Query messages to downstream hosts, and also to act as a...

Which of the following descriptions related to PIM is correct?