View Full Huawei H12-811 V2.0 Exam Dumps and Practice Test Dumps

 

Question 301.

Which Huawei VRP command is used to enter the system view from the user view?

1. system-view
   2. enable
   3. configure terminal
   4. admin-view

Correct Answer: 1. system-view

Explanation:

The system-view command moves a Huawei VRP administrator from the user view into the system view, where most device configuration tasks are performed. From system view, administrators can enter interface views, routing-protocol views, VLAN views, and other configuration contexts. Huawei VRP uses a hierarchical command structure, so knowing how to move between views is essential. The commands enable and configure terminal are associated with other network operating systems rather than standard Huawei VRP syntax. Once configuration work is complete, the administrator can use quit to move back one level or return to go directly to the user view.

Question 302.

Which Huawei VRP command changes the device name shown in the command-line prompt?

1. hostname
   2. sysname
   3. device-name
   4. rename-system

Correct Answer: 2. sysname

Explanation:

The sysname command changes the system name of a Huawei VRP device. A meaningful system name helps administrators quickly identify which router or switch they are connected to, especially when managing many devices remotely. Organizations commonly use naming standards that reflect site, role, floor, or device function. The configured name appears in the command-line prompt and may also be referenced in management systems or documentation. Although hostname is common on other network platforms, Huawei VRP normally uses sysname. Consistent device naming improves operational clarity and reduces the chance of making configuration changes on the wrong device.

Question 303.

Which Huawei VRP command displays the current active configuration?

1. display saved-configuration
   2. display startup
   3. display current-configuration
   4. show running-config

Correct Answer: 3. display current-configuration

Explanation:

The display current-configuration command shows the configuration currently active on the Huawei device. It is commonly used for verification, troubleshooting, auditing, and documenting network settings. The output can include interfaces, routing protocols, VLANs, ACLs, management services, and many other configuration sections. This active configuration may differ from the configuration saved for the next reboot if recent changes have not yet been saved. Administrators should therefore understand the distinction between current and saved configuration. The show running-config command is associated with other platforms rather than Huawei VRP.

Question 304.

Which Huawei VRP command preserves configuration changes so they are available after the device restarts?

1. write
   2. commit-all
   3. store config
   4. save**

Correct Answer: 4. save

Explanation:

The save command stores the current configuration for future startup. Without saving, recent configuration changes may be lost when the device reboots. Administrators typically verify that changes are correct and that services remain operational before saving them permanently. This prevents an accidental or incomplete configuration from becoming the startup state. Saving is particularly important after changes to routing, VLANs, interfaces, ACLs, remote management, or redundancy protocols. On Huawei VRP, save is the standard command used for this task.

Question 305.

Which Huawei VRP command restarts the device?

1. reboot
   2. restart-device
   3. reload
   4. power-cycle

Correct Answer: 1. reboot

Explanation:

The reboot command restarts a Huawei VRP device. Before rebooting, administrators should confirm whether the current configuration has been saved because unsaved changes can be lost. Restarting a router or switch causes a service interruption while the device reloads its software and configuration, so it should normally be performed within an approved maintenance window. Rebooting may be required after some software upgrades, maintenance tasks, or recovery procedures. The command should not be used casually as a substitute for systematic troubleshooting because it can temporarily hide the underlying cause of a problem.

Question 306.

Which route is automatically created when an interface has a valid IP address and is operational?

1. Static route
   2. Direct route
   3. OSPF route
   4. Default route

Correct Answer: 2. Direct route

Explanation:

A direct route is automatically installed when a Layer 3 interface has a valid IP address and is operational. It represents the subnet directly connected to that interface. No manual static route or dynamic routing protocol is needed for the router to recognize a directly attached network. If the interface goes down, the corresponding direct route may disappear from the routing table. Direct routes are important because they allow the router to reach local hosts and next-hop devices. Dynamic protocols such as OSPF often depend on these connected interfaces for neighbor relationships and route advertisement.

Question 307.

Which Huawei VRP command is used to configure a manually defined IPv4 route?

1. route add
   2. static route
   3. ip route-static
   4. ip route

Correct Answer: 3. ip route-static

Explanation:

Huawei VRP uses the ip route-static command to configure static IPv4 routes. The command typically specifies the destination network, subnet mask or prefix, and either a next-hop address or outbound interface. Static routes provide predictable forwarding and require little protocol overhead, but they do not automatically adapt to network changes unless additional mechanisms are configured. They are commonly used for branch connectivity, default routing, backup routes, and simple topologies. After creating a static route, administrators can verify its presence with display ip routing-table.

Question 308.

Which IPv4 route matches every possible destination and is used only when no more specific route is available?

1. 127.0.0.0/8
   2. 169.254.0.0/16
   3. 224.0.0.0/4
   4. 0.0.0.0/0**

Correct Answer: 4. 0.0.0.0/0

Explanation:

The IPv4 default route is represented as 0.0.0.0/0. Its prefix length of zero means it can match any IPv4 destination, but routers use longest-prefix matching, so any more specific matching route is preferred. Default routes are commonly configured on branch or edge routers that have a primary upstream path. Instead of maintaining routes for every possible remote network, the router can forward unknown destinations toward a central router or internet gateway. Proper return routing must still exist for successful end-to-end communication.

Question 309.

Which routing rule ensures that the most specific matching destination route is selected?

1. Longest-prefix match
   2. Highest route preference
   3. Lowest MAC address
   4. Highest VLAN ID

Correct Answer: 1. Longest-prefix match

Explanation:

Longest-prefix matching means a router chooses the matching route with the greatest number of destination prefix bits. For example, if a packet to 10.1.1.10 matches 10.0.0.0/8, 10.1.0.0/16, and 10.1.1.0/24, the /24 route is selected because it is the most specific. Only after the destination prefix has been determined do route preference and metrics become important among competing routes to the same prefix. This rule allows networks to use broad summary routes alongside more specific exception routes.

Question 310.

Which Huawei VRP command displays the device’s IPv4 routing table?

1. display route table
   2. display ip routing-table
   3. display forwarding only
   4. display network route

Correct Answer: 2. display ip routing-table

Explanation:

The display ip routing-table command shows IPv4 routes known to a Huawei VRP device. The table can contain direct, static, OSPF, RIP, and other routes depending on the configuration. Important information includes destination prefixes, route sources, preferences, metrics, next hops, and outbound interfaces. This command is fundamental during Layer 3 troubleshooting because it reveals whether the router has a path toward a destination and which route has been selected. If no route is present, the administrator must investigate addressing, static configuration, or routing-protocol operation.

Question 311.

Which OSPF packet is used to discover neighbors and maintain OSPF neighbor relationships?

1. Link State Update
   2. Database Description
   3. Hello
   4. Link State Request

Correct Answer: 3. Hello

Explanation:

OSPF Hello packets discover neighboring routers and maintain existing neighbor relationships. They carry information such as Router ID, area-related parameters, Hello and Dead intervals, and other values used during adjacency formation. Certain settings must match between neighboring routers before a normal relationship can form. If Hello packets are no longer received within the Dead interval, the neighbor is considered unavailable. Other OSPF packet types are used later for database synchronization and link-state exchange.

Question 312.

Which OSPF state indicates that neighboring routers have fully synchronized their required link-state information?

1. Init
   2. ExStart
   3. Exchange
   4. Full**

Correct Answer: 4. Full

Explanation:

The Full state normally indicates that OSPF neighbors have completed adjacency formation and synchronized the necessary link-state database information. Routers can pass through states such as Down, Init, 2-Way, ExStart, Exchange, and Loading before reaching Full. If an adjacency remains stuck in an intermediate state, the administrator should investigate possible issues involving MTU, network type, timers, authentication, area configuration, or connectivity. On some multiaccess networks, not every neighbor relationship becomes fully adjacent because DR and BDR behavior affects adjacency requirements.

Question 313.

Which OSPF value uniquely identifies a router inside an OSPF routing domain?

1. Router ID
   2. VLAN ID
   3. MAC table index
   4. TCP sequence number

Correct Answer: 1. Router ID

Explanation:

The OSPF Router ID is a 32-bit identifier used to uniquely identify a router within the OSPF domain. It appears in neighbor relationships, Link State Advertisements, and other protocol operations. Although written in dotted-decimal form like an IPv4 address, it functions primarily as an identifier and does not necessarily need to correspond to an active interface address. Administrators frequently configure Router IDs manually to provide predictable and stable OSPF behavior. Duplicate Router IDs can cause serious routing problems and should be avoided.

Question 314.

Which OSPF router type connects different OSPF areas?

1. DR
   2. Area Border Router
   3. Backup DR
   4. Internal router only

Correct Answer: 2. Area Border Router

Explanation:

An Area Border Router, or ABR, connects multiple OSPF areas. In a standard hierarchical OSPF design, an ABR connects one or more non-backbone areas to Area 0. It maintains link-state information for the areas it participates in and exchanges inter-area routing information. An internal router has all its OSPF interfaces in the same area. DR and BDR roles are associated with multiaccess network adjacency management and do not necessarily indicate that the router participates in multiple areas.

Question 315.

Which OSPF area serves as the backbone for a conventional multi-area OSPF design?

1. Area 1
   2. Area 10
   3. Area 0
   4. Area 100

Correct Answer: 3. Area 0

Explanation:

Area 0 is the OSPF backbone area. Non-backbone areas normally connect to it through Area Border Routers so inter-area routing information can be exchanged in a structured way. Multi-area OSPF improves scalability by limiting detailed topology information and SPF calculations within individual areas. However, this hierarchical design depends on correct backbone connectivity. If an area’s relationship with Area 0 is incorrect, inter-area communication can be disrupted even when routers inside the area communicate successfully with one another.

Question 316.

Which OSPF metric is used to select the preferred path?

1. Hop count
   2. MAC priority
   3. VLAN cost
   4. Cost**

Correct Answer: 4. Cost

Explanation:

OSPF uses cost as its metric when calculating routes. The total cost of a path is based on the cost assigned to interfaces along that path, and a lower total cost is normally preferred. Interface cost is commonly related to bandwidth but can also be configured manually. This gives administrators flexibility to influence which links should carry normal traffic while retaining alternate paths for resilience. Hop count is associated primarily with RIP, while MAC and VLAN values do not serve as OSPF route metrics.

Question 317.

Which protocol provides automatic first-hop gateway redundancy using a shared virtual IP address?

1. VRRP
   2. STP
   3. LLDP
   4. LACP

Correct Answer: 1. VRRP

Explanation:

VRRP allows multiple routers or Layer 3 switches to present a shared virtual default gateway to hosts. One device normally operates as the master and forwards traffic, while backup devices monitor the master and can assume the role if it fails. End hosts continue using the same virtual gateway address throughout the failover. This improves gateway availability without requiring changes to endpoint configuration. STP prevents Layer 2 loops, LLDP discovers neighbors, and LACP manages aggregated Ethernet links.

Question 318.

Which protocol dynamically negotiates participation in an Ethernet link aggregation group?

1. STP
   2. LACP
   3. OSPF
   4. ARP

Correct Answer: 2. LACP

Explanation:

LACP dynamically negotiates and manages member links in an Ethernet aggregation group. It allows devices at both ends of the connection to exchange information about candidate interfaces and determine which links can actively participate in the logical bundle. This helps detect mismatched or unsuitable configurations. On Huawei devices, link aggregation is commonly implemented using an Eth-Trunk interface. STP prevents switching loops, OSPF performs Layer 3 routing, and ARP resolves IPv4 addresses to MAC addresses.

Question 319.

Which Huawei logical interface is commonly used to aggregate several physical Ethernet links?

1. Vlanif
   2. LoopBack
   3. Eth-Trunk
   4. NULL

Correct Answer: 3. Eth-Trunk

Explanation:

An Eth-Trunk interface represents a logical bundle of multiple physical Ethernet connections on Huawei devices. Aggregation can increase total available bandwidth and provide redundancy because traffic can continue over remaining members if one physical link fails. The logical interface can be configured for Layer 2 or supported Layer 3 functions depending on the device and design. Member links should have compatible configuration, and administrators should verify their status with appropriate display commands when troubleshooting.

Question 320.

A Huawei router has a valid route to a destination, but communication still fails. Which set of checks is most appropriate next?

1. Change the sysname and reboot immediately
   2. Delete the routing table
   3. Disable all dynamic routing protocols
   4. Check next-hop reachability, interface status, ARP, ACL/NAT policies, and return routing**

Correct Answer: 4. Check next-hop reachability, interface status, ARP, ACL/NAT policies, and return routing

Explanation:

A valid route only confirms that the router has selected a forwarding path. It does not prove that packets can successfully reach the destination and return. The next hop must be reachable, the outbound interface must be operational, and ARP resolution may be required on Ethernet networks. ACLs can block otherwise valid traffic, while NAT policies can create or prevent necessary address translations. The remote side must also know how to return traffic toward the source. Systematic checks using ping, tracert, display ip routing-table, display arp, interface statistics, and relevant policy information are far more effective than making disruptive changes before identifying the real cause.