dumpstool logo
Which of the following values is the Reserved/Circuit Type field in the IIH packets sent by a Level-1-2 router on an IS-IS network?
When a BGP device sends an Open message to establish a peer connection, which of the following information is carried?
On a WLAN, the HSB service sets up an HSB channel between two devices that back up each other, maintains the channel status, and backs up data. Which of the following can HSB back up in real time?
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.
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?
On an OSPF network, OSPF routers exchange LSAs to synchronize their LSDBs. If an OSPF router receives an LSA that does not exist in its LSDB, it updates its LSDB and floods the LSA.
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. If a BGP speaker advertises a route to an IBGP peer, it creates an empty AS_Path in an Open message. This prevents routing loops between ASs.
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?
When IPv4 unicast packets are transmitted over Ethernet, their destination MAC address is also a multicast MAC address. If the IP address of a multicast group is 224.0.1.1, which of the following is the corresponding multicast MAC address?
By default, the maximum number of hops allowed over an EBGP connection is 1. That is, an EBGP connection can be established only over a physical link between directly connected devices.
A large enterprise deploys a WLAN in VRRP HSB mode to ensure WLAN reliability. Which of the following statements are false about the VRRP configuration?
In VRRP networking, devices assume the Master and Backup roles after election. Match the two roles with their working mechanisms.(Token is reusable)
BGP confederations are widely used because they can reduce the number of IBGP connections in an AS. Which of the following statements is false about confederations?
Which of the following statements regarding OSPF route summarization commands are true?
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?
BGP is a distance-vector protocol that implements route reachability between ASs and selects optimal routes. Which of the following statements are true about this protocol?
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 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.
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.
On Huawei firewalls, a larger priority value of a security zone indicates a higher priority. Which of the following is the default priority of the Trust zone?
On an RSTP network, you can set the STP priority of a switch to specify the switch as the root bridge.
Which of the following values is the default STP priority of a Huawei switch?
A local router runs IS-IS and its command output is shown in the following figure. Which of the following statements is true?
ACLs are a common matching tool in routing policies. An ACL can be configured on a router to match routes.
Typically, a protocol that occupies two ports during communication is called a multi-channel protocol. For such protocols, the ASPF function must be enabled on the firewall to ensure smooth setup of the data channel and reduce the risk of attacks. Which of the following protocols is not a multi-channel protocol?
Which of the following statements regarding OSPF route summarization is false?
Route summarization can effectively reduce the number of BGP routes. However, many parameters need to be properly set when configuring BGP route summarization. Otherwise, problems such as routing loops may occur.
Which of the following statements is false about BGP route summarization?
Which of the following community attributes enables a device to send a received route with this attribute to any BGP peer?
Which of the following fields in DD packets is used for implicit acknowledgment to ensure the reliability and integrity of DD packet transmission on an OSPF network?
After a BGP peer relationship is established between two ends, changing the router ID of one end resets the BGP peer relationship.
An OSPF area ID identifies an OSPF area. Which of the following OSPF area IDs is equivalent to 0.0.1.0?
Compared with STP, RSTP defines the different port states. Which of the following statements regarding discarding and learning states are true?
During routine operation and maintenance, an engineer checks the IGMP configuration on RTA. The configuration is as follows:
Interface information of VPN-Instance: public net
GigabitEthernet0/0/1 (192.168.1.1):
IGMP is enabled
Current IGMP version is 2
IGMP state: up
IGMP group policy: none
IGMP limit: -
Value of query interval for IGMP (negotiated): -
Value of query interval for IGMP (configured): 60 s
Value of other querier timeout for IGMP: 0 s
Value of maximum query response time for IGMP: 10 s
Querier for IGMP: 192.168.1.1 (this router)
Given this, which of the following statements is false?
In which of the following scenarios can a neighbor relationship not be established between two directly connected Huawei routers after IS-IS is configured?
An enterprise uses OSPF to implement network communication. To ensure data validity and security, all authentication modes supported by OSPF are enabled on routers. In this case, interface authentication is preferentially used by the routers.
During routine O & M, an engineer finds that the Hold Time parameters of two devices are inconsistent. In this case, which of the following situations occurs?
As shown in the figure, SWA, SWB, SWC, and SWD run the Rapid Spanning Tree Protocol (RSTP). Which of the following statements are true?
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?
RPF check is an important mechanism in multicast to ensure the correctness and uniqueness of the forwarding path. In normal cases, which of the following routing entries are used to select the optimal route during RPF check?
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.
BFD can quickly detect faults in channels at multiple network layers, ensuring high reliability. To which of the following layers does BFD belong?
A large number of external routes are imported to an NSSA of an enterprise's OSPF network. The customer requires that the number of LSAs in non-special areas be reduced. To meet this requirement, route summarization can be configured on an ABR in the NSSA to summarize the routes corresponding to the Type 5 LSAs translated from Type 7 LSAs.
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.
To inject IGP routes into BGP routes, you can only use the network command.
On an OSPF network, the default interface cost is calculated by dividing the default reference value by the actual interface bandwidth. By default, the reference value is______Mbit/s.
(Enter only digits.)
On an OSPF network, the I bit, M bit, and MS bit in the first DD packet sent by a router are all set to 1.
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:
sql
Copy
< 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?
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.
BGP is generally applied to complex networks where routes change frequently. Frequent route flapping consumes a large number of bandwidth and CPU resources, and even affects the normal operation of the network. This is an unavoidable problem that cannot be solved in BGP.
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?
In the VRP, by default, the routes imported by BGP will be automatically summarized.
The IP prefix list configuration on a Huawei router is shown below. Which of the following routes can match this IP prefix list?
bash
Copy
[huawei] ip ip-prefix test index 10 permit 10.0.0.0 8 less-equal 32
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?
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 reserved for routing protocols?
The traffic limiting policy feature only supports the number of connections initiated by the specified IP or the number of connections received.
On an IS-IS broadcast network, neighbor relationships are established between routers (including all non-DIS routers) of the same level on the same network segment.
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?
If a router ID is configured in both the system via and the BGP view, BGP uses the router ID configured in the BGP view because the BGP view takes precedence over the system view.
Both MQC and PBR can be applied on device interfaces to filter received and sent packets or control packet forwarding paths.
An enterprise uses Huawei routers to deploy an IS-IS network for network-wide communication. An engineer wants to change the interface cost to control route selection. By default, which of the following values is the maximum cost that can be configured?
On an IP network, both PBR and routing policies are commonly used for routing and traffic control, but they are different from each other. Match PBR and routing policy with their functions.(Token is reusable)
An IP prefix list is configured on a router using the following command:
ip ip-prefix huawei index 10 permit 10.1.1.0 24 greater-equal 26
In this case, the value of greater-equal-value is ____, and the value of less-equal-value is ____.
A session is an entry used to record the connection status of a protocol and is fundamental for the firewall to forward packets. Which of the following protocol packets will the firewall create sessions for?
See the network shown in the following figure.
R1 and R2 run IS-IS and establish an adjacency. IS-IS is enabled on Loopback0 of R2 but disabled on Loopback3 of R2. The configurations shown in the figure are performed in the IS-IS process of R2. Which of the following statements are true?
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?
Based on 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 substitute for downstream hosts to send IGMP Report/Leave messages to an upstream device. As such, this function conserves bandwidth between the upstream device and the local device.
A large shopping mall configures a VLAN pool to prevent network performance deterioration caused by potentially large broadcast domains. A network engineer runs the display vlan pool name STA command to check information about the VLAN pool. The following command output is displayed:
< AC > display vlan pool name STA Name : STA Total : 2 Assignment: hash Threshold Notify Count: 3 Threshold Notify time(min): 3 VLAN ID : 2 4
Which of the following statements are true?
Compared with OSPF, IS-IS has higher scalability because IS-IS uses the______structure to construct packets. (Enter the acronym in uppercase.)
An edge port is a new port role added to RSTP to overcome the disadvantages of STP. Which of the following statements is false about this port role?
When a router that runs BGP receives an unreachable route from a peer, which of the following measures will be taken by the router?
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?
When two BGP peers support different Hold Time, they will negotiate to support the shortest Hold Time interval they can support.
From the logical architecture perspective, network devices are logically divided into multiple planes. Which of the following planes is not one of them?
On a broadcast network, IS-IS elects a DIS, and OSPF elects a DR. Which of the following statements are true about the differences between a DIS and a DR?
See the following figure. RTA, RTB, RTC, and RTD are in the same AS and establish IBGP peer relationships through direct links. RTB an RTC are route reflectors (RRs), RTA and RTC are the RR clients of RTB, and RTB and RTD are the RR clients of RTC. If RTA advertises the route 10.1.1.0/24 to the BGP process, the Originator ID of the BGP route received by RTD is------------------.
Which of the following is the default interval at which the DIS on a broadcast IS_IS network sends CSNPs.
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?
On an IS-IS network, each router can generate LSPs. Which of the following events trigger the generation of a new LSP?
The following figure shows a campus network. IS-IS is configured on all routers, and the network runs normally.
By default, which of the following routers have specific routes on the entire network?
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 parts constitute the LSP ID in an LSP?
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)
IP multicast effectively conserves network bandwidth and reduces network load. Therefore, it is widely used in network services, such as IPTV, real-time data transmission, and multimedia conferencing.
On a BGP network, a route-policy can be used to modify route attributes. Which of the following statements is false about route-policies?
A switch running a later IGMP version can identify Report messages of an earlier IGMP version, but the switch running an earlier IGMP version cannot identify Report messages of a later IGMP version. To ensure that IGMP runs properly, you are advised to set the IGMP version on the switch to be the same as or later than the IGMP version of member hosts.
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.
In BGP, the origin attribute of the routes imported using the import-route command is incomplete.
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.
During routine check, the administrator of an enterprise finds that some switch ports are not in use. Therefore, the administrator logs in to the device and manually disables the ports to further ensure device security.
On an IS-IS network, the area address and router ID of a router are 49.0001 and 10.10.1.1, respectively. For easier management, you are advised to configure a system ID based on the router ID. In this case, the corresponding NET is______. (Enter digits only and separate them with periods).
Hackers often obtain the login permissions of system administrators through various attacks.
Which of the following measures can be taken to enhance the security of administrator accounts? (Select all that apply)
An OSPF AS-external LSA describes a route to an AS external network. When the field in the LSA is 0.0.0.0, the traffic destined for the external network is sent to the ASBR that imports this external route. (Enter the acronym in uppercase.)
When a routing policy is used to filter routes, which of the following route prefixes will be denied by the IP prefix below?
Bidirectional route re-advertisement enables a border router to import routes between two routing domains. However, this may cause sub-optimal routes and routing loops.
Which of the following statements regarding BGP route advertisement are false?
OSPF networks are classified into four types of networks by link layer protocol. Drag the following link layer protocols to the corresponding network types.(Token is reusable)
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.
When receiving a packet that does not match any session table entry, the firewall discards the packet to prevent external attacks and ensure internal information security.
Regarding the route-policy set-cost configuration below, which of the following statements is true?
A campus network uses OSPF for network communication. The display ospf peer command is run on a router, and the command output is as follows:
vbnet
Copy
Edit
< R2 > display ospf peer
OSPF Process 1 with Router ID 10.0.2.2
Area 0.0.0.0 interface 10.0.235.2 (GigabitEthernet0/0/1)'s neighbors
Router ID: 10.0.5.5 Address: 10.0.235.5
State: Full Mode: Nbr is Master Priority: 1
DR: 10.0.235.5 BDR: 10.0.235.3 MTU: 0
Dead timer due in 40 sec
Area 0.0.0.0 interface 10.0.24.2 (Serial1/0/1)'s neighbors
Router ID: 10.0.4.4 Address: 10.0.24.4
State: Full Mode: Nbr is Master Priority: 1
DR: None BDR: None MTU: 0
Dead timer due in 35 sec
Which of the following statements are true about the device?
Which of the following statements are true about the packet filtering firewall?
After which of the following parameters are modified does an IS-IS neighbor relationship need to re-established?
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.
On an OSPF network, if two indirectly connected routers with the same router ID run in the same area, Type 1 LSA calculation fails.
TESTED 09 Oct 2026
