PBR is a mechanism for selecting routes based on user-defined policies. There are two types of PBR: interface-based PBR and local PBR. Which of the following statements is false about these two types of PBR?
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 carries the Atomic-aggregate attribute rather than the community attributes of specific routes.
A Layer 2 switch supports multiple types of Ethernet interfaces. Similar to a trunk interface, a hybrid interface allows data frames from multiple VLANs to pass through. In addition, you can determine whether data frames from a VLAN sent out from a hybrid interface are tagged or untagged.
On an RSTP network, port priorities may be compared during root port or designated port election. Which of the following values is the default priority of a port on a Huawei switch?
To prevent loops on an STP network, after a designated port is elected, it must wait for a long time and can forward packets only after the status of all ports on the entire network is determined. To solve this problem, RSTP uses the P/A mechanism to speed up the downstream port's transition to the Forwarding state.
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.
On an OSPF network, if the network type is NBMA, a router unicasts all protocol packets; if the network type is broadcast, a router multicasts all protocol packets.
On a network, each router has a local core routing table and protocol routing tables. A routing entry in the local core routing table has multiple key fields. Which of the following are included?
When configuring BFD to detect link faults on devices at both ends, an enterprise administrator incorrectly sets parameters to different values on the two devices, as shown in the figure. Which of the following is the interval for sending packets on R1 after negotiation?
When a router that runs BGP receives an unreachable route from a peer, which of the following measures will be taken by the router?
The following figure shows a broadcast IS-IS network. By default, Rl is elected among the four routers as the DIS. After the DIS priority of GE 0/0/1 on R2 is changed to 63 and the network stabilizes, which of the following routers is elected as the DIS?
OSPF has several types of special areas, which are used to reduce the LSDB size and improve device performance.
Which of the following LSAs cannot be in a totally stub area?
The filter-policy 2000 export command is run in an ISIS process. Which of the following statements about the functions of a filter policy is false?
VRRP defines three states. Only the device in which state can forward packets destined for a virtual IP address?
(Write in full and capitalize the first letter.)
In the VRP, by default, the routes imported by BGP will be automatically summarized.
To overcome the disadvantages of STP, RSTP changes the format of configuration BPDUs. Which of the following fields in STP BPDUs is used to specify the port role?
The IP prefix list configuration on a Huawei router is shown below. Which of the following routes can match this IP prefix list?
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[huawei] ip ip-prefix test index 10 permit 10.0.0.0 8 less-equal 32
A firewall receives a packet that PC1 sends to PC2. Which of the following statements are true?
After HSB is configured, the HSB channel fails to be established and cannot back up information on the active device to the standby device. What are the possible causes for this HSB function failure?
When configuring an ACL on a router, you can identify the ACL by number or name. When configuring a named ACL, you need to manually specify a name and a number for the ACL.
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?
The OSPF neighbor table stores important entries maintained by OSPF. Which of the following statements are true about the entries?
In addition to numerous normal service packets, the CPUs of devices on a network may also receive large numbers of attack packets. To ensure that the CPUs can properly respond to normal services, the devices provide the local attack defense function.
Which of the following statements are true about this function? (Select all that apply)
When an SSH client accesses an SSH server for the first time and the SSH server's public key is not configured on the SSH client, you can enable first-time authentication on the SSH client. This allows the SSH client to access the SSH server and saves the SSH server's public key on the SSH client. In this way, the next time the SSH client accesses the SSH server, the SSH client can use the saved public key to authenticate the SSH server.
A data center is a set of complex facilities including equipment rooms. Which of the following devices are involved in data center deployment?
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?
BFD provides fast fault detection independent of media and routing protocols. To use this mechanism to detect link connectivity, devices at both ends must support this feature.
If you do not take proper precautions when deploying a VRRP network, the network may be disconnected. Which of the following is not a precaution for deploying VRRP?
When receiving a packet, a Huawei router matches the packet against ACL rules. The default ACL matching order used by the Huawei router is.
On an STP network, parameters used for role election, such as the root bridge ID, root path cost, and bridge ID, are all fields in BPDUs.
BGP itself does not discover routes. Therefore, other routes need to be imported to the BGP routing table for route exchanges between ASs. In import mode, routes are imported to the BGP routing table by protocol. Which of the following routes can be imported to the BGP routing table using the import mode?
The VRID of the VRRP virtual router is 3 and the virtual IP address is 100.1.1.10. What is the virtual MAC address?
IGMP has three versions. Different versions support different features. Which of the following features is supported by all versions?
The typical characteristics of the AI era are that it focuses on data, explores data value, and improves AI efficiency. Therefore, the core requirement of AI for data center networks is speed, meaning low latency.
A large number of routes typically exist in a BGP routing table, and transmitting such extensive routing information brings a heavy burden to a device. In order to address this problem, it is necessary to filter those routes to be advertised. You can configure a device to advertise only necessary routes or those that its peers require.
The traffic limiting policy feature only supports the number of connections initiated by the specified IP or the number of connections received.
As a next-generation wireless technology, Wi-Fi 6 greatly improves bandwidth rate and performance. Which of the following statements is false about the features of Wi-Fi 6?
From the logical architecture perspective, network devices are logically divided into multiple planes. Which of the following planes is not one of them?
IS-IS has multiple types of packets, each with different functions. Which of the following types of packets is used to establish and maintain neighbor relationships?
After the administrator of an enterprise deploys a DHCP server, employees complain that their clients cannot obtain IP addresses from the DHCP server. Which of the following may cause this problem?
On an ISIS network, each router has at least one NET. If a router is configured with multiple NETs, ensure that these NETs have the same system ID.
OSPF neighbors have multiple states, such as Down, Init, 2-way, Loading, or Full. In which of the following states do OSPF routers negotiate the master and slave roles?
On an STP network, the root bridge, root port, and designated port are elected in sequence. The election rules of these ports are different. List the steps for electing the root port in sequence.
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 relationship between the two interfaces, you can change their network types to which of the following?
GRE is a Layer 2 VPN encapsulation technology that encapsulates packets of certain data link layer protocols so that the encapsulated packets can be transmitted over an IP network.
On an OSPF network, the inter-area routing loop prevention mechanism requires that all non-backbone areas be directly connected to the backbone area. If a non-backbone area is not connected to the backbone area, you can configure a virtual link instead. Which of the following statements are true about virtual links?
On a BGP network, locally originated routes may be generated in multiple ways. Which of the following locally originated routes has the highest priority?
An ACL can be used to match routes or data, but cannot be used to match both the IP address prefix length and mask length.
In special scenarios, when advertising routes to an IBGP peer, a BGP device needs to set the next hop to its IP address to prevent blackhole routes. Which of the following commands can be run in this case?
If the interval for two consecutive packets of a TCP session reaching the firewall is longer than the aging time of the session, the firewall deletes the session information from the session table to ensure network security.
The Internet Assigned Numbers Authority (IANA) allocates Class D addresses to IPv4 multicast. An IPv4 address is 32 bits long, and the four most significant bits of a Class D address are 1110.
When performing a lookup in its FIB table for a packet, a router performs a bitwise "OR" operation on the destination IP address of the packet and the mask of each entry in the FIB table. If the resulting address matches the corresponding network address in the FIB table, a matching route is found.
In IP multicast transmission, packets are transmitted from a source to a group of receivers. Which of the following statements are true about IP multicast technologies?
OSPF routers exchange Hello packets to establish neighbor relationships. The Hello packet sending modes vary by network type. On which of the following types of networks are Hello packets multicast?
In BGP, the AS_Path attribute records the numbers of all ASs that a route passes through from the local end to the destination in the vector order.
Which of the following statements is false about the attribute change during route transmission?
On an office network of an enterprise, OSPF is enabled on two directly connected routers. During adjacency establishment, the state machine stays in the 2-way state. Which of the following statements are not possible causes?
A node of a route-policy can contain multiple if-match and apply clauses. If a route matches a node, all apply clauses of the node are applied to the route. Which of the following routing information can be modified by configuring the apply clauses?
In an MST region, MSTP independently calculates an MSTI for each VLAN based on mappings between VLANs and MSTIs.
Which of the following statements is false about the characteristics of MSTIs?
On a WLAN, MAC address authentication controls network access rights of a user based on the user's access interface and terminal MAC address.
Which of the following statements is false about MAC address authentication?
BFD can quickly detect faults in channels at multiple network layers, ensuring high reliability. To which of the following layers does BFD belong?
On an STP network, only the designated port processes inferior BPDUs. On an RSTP network, a port with any role processes inferior BPDUs.
The native AC function allows an agile switch to integrate AC capabilities, achieving wired and wireless convergence. The agile switch centrally manages wired and wireless service traffic.
In a route-policy, which of the following BGP attributes can be used in apply clauses?
Which of the following statements regarding routing policy and policy-based routing are true?
As shown in the following figure, a new AP is deployed In dual link MSB networking (load balancing mode). Which AC will the connect to?
A large enterprise deploys WLAN in VRRP HSB mode to ensure network reliability.
In this networking mode, which of the following data backup modes are supported? (Select all that apply)
As shown in the figure, data traffic is forwarded in tunnel mode along the path of STA - > HAP - > HAC - > upper-layer network before roaming. What is the flow direction of data traffic after Layer 3 roaming?
Which of the following statements is false about the session table mechanism on firewalls?
On an STP network, if the topology changes, the topology change information must be transmitted to the root bridge first. The root bridge then floods the topology change information to downstream devices.
There are two types of BGP peer relationships: EBGP and IBGP. When configuring EBGP, ensure that the peer IP address is routable and the UDP connection can be correctly established.
VRF, also called VPN instance, is a network virtualization technology that helps VPN technology to isolate users. In normal cases, multiple VPN instances can be created on a physical device, and each VPN instance has independent entries. Which of the following resources can be independently owned by a VPN instance?
A Huawei firewall by default creates security zones named untrust, dmz, _________ and local. (Use Lowercase letters.)
In the OSPF protocol, intra-area route calculation involves only Router LSA, Network LSA, and Summary LSA.
Which of the following statements are true about the packet filtering firewall?
Which of the following statements regarding the firewall zone security level is false?
On an IS-IS network, two directly connected routers establish a neighbor relationship through the three-way handshake mechanism by default, regardless of whether the network type is P2P or broadcast.
ACLs are a common matching tool in routing policies. An ACL can be configured on a router to match routes.
On an OSPF network, there are multiple types of packets, each with a different function. Which of the following are the main functions of Hello packets?
On the campus OSPF network shown in the following figure, the interfaces connecting the five routers are GE interfaces, and their costs are not changed. The import-route command is run on R1. After the network converges, the route to the server at 192.168.1.0/24 is queried on R2. Which of the following is the cost of this route?
By default, a router interface sends PIM Hello messages at an interval of __________ seconds.
CPU attack defense uses a multi-level security mechanism to implement hierarchical device protection. Match the following levels with the corresponding protection functions.
There are two BFD operating modes. In_______mode, the local end sends BFD Control packets at specified intervals, and the remote end checks whether the local end periodically sends BFD Control packets. (Use lowercase letters.)
Preferences of routing protocols determine the sequence In which a router selects a route among routes to the same destination /earned through different routing protocols.
Which of the following statement regarding the display ospf peer command output is true?
To reduce the workload of configuring VPN instances, the administrator can import interface IP addresses and features to the device in batches using a script, and then manually bind the interfaces to VPN instances.
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?
Which of the following statements are false about VRRP timers? (Select all that apply)
A router uses an advanced ACL to filter data. The ACL configuration is shown below. Which of the following statements is false about the configuration?
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[Huawei] acl 3001
[Huawei-acl-adv-3001] rule permit icmp source 192.168.1.3 0 destination 192.168.2.0 0.0.0.255
Which of the following statements is false, based on the following IGMP information on an interface of RTA?XC
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 routers are changed to be the same, neighbor relationship establishment and LSDB synchronization are not affected.
When receiving a packet, a router matches the packet against ACL rules. The ACL matching result is either Matched or Unmatched. If the matching result is Unmatched, which of the following are possible causes?
On an OSPF network, LSDBs are used to store LSAs. Common LSAs include router LSAs and network LSAs. Which of the following items is not included in the 3-tuple that is used to uniquely identify an LSA?
On the network shown in the following figure, the management VLAN is VLAN 10, and the AP is configured to obtain an IP address on the network segment 10.1.1.0/24 through DHCP. The AP, AC, and AR function as the DHCP client, DHCP relay agent, and DHCP server, respectively. Which of the following configurations for the DHCP relay agent and DHCP server are correct?
IGMP group entries play an important role in multicast forwarding. An administrator runs a command to view information about a multicast entry. The information is as follows:
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< HUAWEI > display igmp group
Interface group report information
Vlanif100(10.1.6.2):
Total 1 IGMP Group reported
Group Address Last Reporter Uptime Expires
225.1.1.2 10.1.6.10 00:02:04 00:01:17
Given this, which of the following statements are true?
A wide area network (WAN) is a remote network that connects local area networks (LANs) or metropolitan area networks (MANs) in different areas for communication purposes. It is typically used to interconnect campus networks or data center networks.
After IPsec is deployed on an enterprise network, services are interrupted. The administrator finds that no data flow triggers IKE negotiation.
Which of the following are possible causes? (Select all that apply)
On an IPv6 network, intermediate forwarding devices do not fragment IPv6 packets for the purpose of reducing their packet processing pressure. Packets are fragmented only on the source node.
Depending on the type of algorithms used, routing protocols are classified into distance-vector protocols and link-state protocols. Which of the following routing protocols are link-state protocols?
On a campus network, ISIS runs on all devices. Detailed LSDB information displayed on one of the devices is as follows:
Which of the following statements are true based on the command output?
OSPF has multiple types of routes with varying priorities. Which of the following types of routes has the lowest priority when they have the same prefix?
On an IS-IS network, areas are divided by router, and a router can belong to only one area. Therefore, an IS-IS router only needs to maintain the LSDB of its area.
On an IS-IS network, each device needs to be configured with a network entity title (NET), which consists of three parts, each containing different fields. Which of the following fields are contained in the Area Address part?
A switch runs MSTP. The configuration is shown in the figure. What is the role of this switch in MSTI 1?
BGP can select routes based on the AS_Path attribute. Therefore, in some cases, a route-policy needs to be used to modify the AS_Path attribute for route selection. Which of the following parameters can be specified in the apply as-path command for a route-policy to modify this attribute?
A forwarding information database (FIB) can directly guide packet forwarding on a router.
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TESTED 05 Oct 2026
