Free H12-311-V3.0 sample questions

Correct answer: Target Wake Time (TWT)

Target Wake Time (TWT) is a Wi-Fi 6 feature specifically designed to improve power efficiency for client devices, especially IoT devices. It allows the AP to negotiate specific times for devices to wake up and transmit data, enabling them to remain in a low-power sleep state for extended periods. OFDMA is for high-density efficiency, BSS Coloring reduces interference, and 1024-QAM increases data rates, but TWT directly addresses the goal of maximizing battery life.

Correct answer: Option 43

When a Fit AP is on a different subnet from its AC, it cannot use Layer 2 broadcast methods for discovery. DHCP Option 43 is the standard method used to provide vendor-specific information, such as the IP address(es) of an AC, to a client. The AP, upon receiving its IP address, will also receive the AC's IP address via Option 43 and can then initiate the CAPWAP tunnel establishment process. Option 60 is for the Vendor Class Identifier, Option 66 is for a TFTP server, and Option 150 is for a Cisco TFTP server.

Correct answer: Directional panel antenna

Directional antennas, such as panel or Yagi antennas, focus RF energy in a specific direction. This is ideal for long, narrow spaces like warehouse aisles, as it maximizes signal strength within the aisle and reduces co-channel interference with APs in adjacent aisles. An omnidirectional antenna would waste signal by broadcasting it into the metal shelves, causing high reflection and poor coverage down the aisle. Smart antennas are more complex and expensive, while an isotropic antenna is a theoretical reference, not a practical device.

Correct answers: Incorrect password entered on the client device.; The RADIUS server is unreachable from the AC.

Correct answer: Tunnel forwarding

In tunnel forwarding mode, all traffic from the client, including user data, is encapsulated within the CAPWAP tunnel and sent to the AC. The AC then de-encapsulates the traffic and forwards it to the upstream network. This allows for centralized control, security policies, and management. In direct forwarding, only control packets are sent to the AC via the CAPWAP tunnel; user data is forwarded directly by the AP onto the local wired network.

Correct answer: False

This statement is false. OFDMA and MU-MIMO are complementary technologies in Wi-Fi 6. OFDMA divides the channel frequency into smaller Resource Units (RUs) to serve multiple users with small packets simultaneously. MU-MIMO uses multiple spatial streams to serve different users at the same time. They can be used together; for example, an AP can allocate different RUs to different groups of users, and within some of those RUs, it can use MU-MIMO to serve multiple users simultaneously.

Correct answer: IEEE 802.1X

WPA3-Enterprise mode uses the IEEE 802.1X framework for authentication, which provides per-user, per-session authentication typically via a RADIUS server. This is the standard for enterprise-grade security. SAE (Simultaneous Authentication of Equals) is the technology that replaces PSK in WPA3-Personal mode. MAC Address Filtering is a much weaker form of access control and not the primary method for WPA3-Enterprise.

Correct answer: [AC6508] vap-profile name New-VAP [AC6508-vap-prof-New-VAP] ssid-profile Corp-WiFi [AC6508-vap-prof-New-VAP] security-profile WPA2-Ent

The correct procedure is to first enter the VAP profile view using `vap-profile name `. From within this context, you then bind the existing SSID profile using the `ssid-profile ` command and the security profile using the `security-profile ` command. The other options use incorrect commands or an incorrect order of operations.

Correct answer: Direct forwarding; its primary advantage is reducing the processing load and potential bottleneck on the central AC.

The scenario explicitly states that guest traffic should be sent 'directly from the APs to a dedicated internet gateway' to 'minimize load on the central AC'. This describes direct forwarding (also known as local forwarding). Its main benefit in this context is offloading the data plane from the AC, preventing the AC from becoming a bottleneck for high-volume guest internet traffic and improving overall WLAN scalability.

Correct answer: To convert guided waves from a transmission line into electromagnetic waves in free space.

The fundamental purpose of a transmitting antenna is to act as a transducer that converts electrical energy in the form of guided waves traveling along a transmission line (like a coaxial cable) into electromagnetic waves that can propagate through free space. Conversely, a receiving antenna performs the reverse function. While antennas have gain, they do not actively amplify power like an amplifier; they focus existing power. They do not modulate or demodulate signals.