Free H12-811 sample questions

Correct answer: Configure the port as a trunk port and permit VLANs 10 and 20.

To facilitate inter-VLAN routing, the link between the switch and the router (a 'router-on-a-stick' configuration) must carry traffic for multiple VLANs. This is achieved by configuring the switch port as a trunk port. A trunk port uses IEEE 802.1Q tagging to identify frames belonging to different VLANs. Permitting VLANs 10 and 20 ensures that traffic from both the Sales and Marketing departments can reach the router for routing.

Correct answers: The OSPF router priorities are both set to 0 on a broadcast network.; One router is a DR and the other is a DROTHER on a broadcast network.

Correct answer: True

This statement is true. If only the next-hop IP address is specified for a static route on a multi-access network (like Ethernet), the router cannot directly determine which interface to send the packet out of. It must first look up the next-hop IP address in its routing table to find the corresponding outbound interface. This process is known as a recursive lookup. To avoid this and improve performance, it is best practice to specify both the next-hop IP address and the outbound interface when configuring static routes on broadcast networks.

Correct answer: rule 10 permit tcp source 10.1.1.0 0.0.0.255 destination 192.168.100.10 0 destination-port eq 80

This command correctly defines one of the required rules for an advanced ACL. It specifies the protocol (TCP), the source network (10.1.1.0 with a wildcard mask of 0.0.0.255, equivalent to /24), the specific destination host (192.168.100.10 with a wildcard mask of 0, meaning an exact match), and the destination port (equal to 80). An additional rule would be needed for port 22. The other options are incorrect because they either permit all IP traffic, use an incorrect wildcard mask, or use incorrect syntax for port specification.

Correct answer: Tunnel forwarding

Tunnel forwarding, also known as centralized forwarding, is the mode where all user data traffic is encapsulated in a CAPWAP tunnel and sent from the Access Point (AP) to the Access Controller (AC). The AC then decapsulates the traffic and forwards it to the upstream network. This allows for centralized control, security policy enforcement, and simplified AP configuration. Direct forwarding would involve the AP forwarding data traffic directly to the local wired network.

Correct answer: Link-Local Address

A Link-Local Address is an IPv6 unicast address that is automatically configured on every IPv6-enabled interface. These addresses are restricted to a single link (network segment) and are not forwarded by routers. They typically begin with the prefix FE80::/10 and are used for functions like the Neighbor Discovery Protocol (NDP) and communication between devices on the same local link.

Correct answer: Edge port

RSTP introduces the concept of an edge port, which is a port that connects directly to an end station (like a PC or server) and not to another switch. By configuring a port as an edge port, the administrator tells the switch not to expect BPDUs on that port. This allows the port to bypass the listening and learning states and transition immediately to the forwarding state, eliminating the 30-second delay associated with standard STP convergence. This feature is functionally similar to PortFast in other vendor implementations.

Correct answer: NAT with Port Address Translation (PAT/NAPT)

Port Address Translation (PAT), also known as Network Address Port Translation (NAPT) or NAT Overload, is the ideal solution. It allows multiple devices on a private network to be mapped to a single public IP address by using different source port numbers to distinguish between connections. This is the most common form of NAT for home and small business networks, as it conserves public IPv4 addresses. In Huawei's VRP, this is often configured using the 'Easy IP' feature on the outbound interface.

Correct answer: DHCP Discover

The DHCP process is known as DORA: Discover, Offer, Request, Acknowledge. The process begins when a client without an IP address boots up and sends a DHCP Discover message. This message is a broadcast sent to the destination MAC address FF:FF:FF:FF:FF:FF and destination IP address 255.255.255.255 to find any available DHCP servers on the local network segment.

Correct answer: Root Bridge: SW1, Port State on SW3: Alternate

With default priorities, the switch with the lowest MAC address becomes the root bridge. In this case, SW1 (MAC ending in AA-AA-AA) has the lowest MAC and will be elected root. All ports on the root bridge are designated ports. For SW3, the path to the root via SW1 (direct link) is the lowest cost path, making its G0/0/1 port the Root Port. The path to the root via SW2 is a longer path. Therefore, the port on SW3 connected to SW2 (G0/0/2) becomes an Alternate port, which is an RSTP state for a port that provides a redundant path to the root bridge and is ready to take over if the Root Port fails. 'Blocking' is a state in classic STP, not the primary non-forwarding state in RSTP.