Pass the CWNP CWSP CWSP-208 Questions and answers with ValidTests

In 802.1X/EAP authentication:

The EAP method (e.g., EAP-TLS, PEAP) results in the generation of a Master Session Key (MSK).

The Pairwise Master Key (PMK) is derived from the MSK.

The Pairwise Transient Key (PTK) is derived from the PMK using nonces and MAC addresses during the 4-Way Handshake.

The PTK includes the actual keys used for data encryption.

Incorrect:

B. This applies to WPA/WPA2-Personal, not 802.1X/EAP.

C. The RADIUS server sends the MSK, not the PMK directly.

D. The MSK is always derived during EAP authentication, mutual or not.

Endpoint security software can:

A. Enforce network access policies by validating that security settings meet organizational standards.

B. Monitor usage for auditing and threat detection.

C. Limit network connectivity based on SSID names, encryption, and authentication parameters.

Incorrect:

D. Detecting rogue APs and clients is typically done by WIPS, not endpoint security agents.

Comprehensive Detailed Explanation:

In the 802.1X/EAP framework:

The Authenticator is the device that controls access to the network — typically the AP or WLAN controller.

The Authenticator passes EAP messages between the Supplicant (client) and the Authentication Server (RADIUS).

Incorrect:

A. SRV21 is the RADIUS server (Authentication Server), not the Authenticator.

C. The MacBook Pro is the Supplicant.

D. RADIUS server handles Authentication, not Authenticator functionality.

The Message Integrity Code (MIC) is:

A cryptographic checksum applied to the data payload.

It ensures the payload was not modified in transit and guards against tampering.

With AES-CCMP, the MIC is generated as part of the encryption process and verified upon decryption.

Incorrect:

A. Signal integrity is validated at the physical layer, not through the MIC.

C. The MIC protects data payload integrity, not just MAC headers.

D. The MIC is not generated during the 4-Way Handshake.

After deploying a WIPS, an essential baseline activity is to classify all detected devices in the RF environment. These classifications allow the system to enforce security policies and detect policy violations. Classifications include:

Authorized (managed devices)

Rogue (unauthorized, possibly dangerous)

Neighbor (not part of your network but legitimate)

External or Ad hoc devices

Without this initial classification, WIPS cannot properly assess threats or trigger alarms.

A Wireless Network Management System (WNMS) often uses SNMP to manage APs. SNMPv3 is the secure version of SNMP because it supports authentication, encryption, and message integrity. Unlike SNMPv1 and SNMPv2c, which transmit data (including community strings) in plaintext, SNMPv3 provides secure management communications.

Without proper staging, change management, and installation procedures, significant vulnerabilities may arise:

(B) WIPS relies on a known database of authorized APs and clients. If devices are deployed without proper registration and staging, WIPS cannot accurately classify devices as authorized, rogue, or neighbor.

(D) If APs are installed without changing default credentials, attackers can exploit them through common web or SNMP-based management interfaces.

This undermines both operational visibility and network security posture.

For troubleshooting fast roaming (e.g. 802.11r) across channels, a portable protocol analyzer with dual- or multi-band 802.11n adapters enables:

Simultaneous packet capture on different channels

Capturing handoff-related frames and timing analysis in roaming scenarios

This setup allows detailed capture of reassociation, authentication, and 4-Way Handshake processes, essential for diagnosing roaming delays.

Other options (WIPS, spectrum analyzer, autonomous AP) do not support detailed 802.11 frame capture across multiple channels during roaming events.

When compliance reporting and forensic analysis are required and the WLAN vendor’s centralized management system does not provide it, deploying a dedicated overlay WIPS is the most effective solution. Overlay WIPS uses dedicated sensors independent of the WLAN’s operational radios, offering detailed threat detection, compliance logging, and reporting capabilities that often surpass native WLAN features.

In integrated WIPS systems, radios are shared between client servicing and security scanning. To maintain quality of service for latency-sensitive applications such as VoWiFi (Voice over Wi-Fi), scanning operations may be temporarily suspended or deprioritized, potentially reducing security monitoring during those periods.