300-430 Implementing Cisco Enterprise Wireless Networks (300-430 ENWLSI) Questions and Answers

 Bluetooth Low Energy (BLE) is renowned for its ability to provide precise location services, especially in the context of indoor positioning systems. BLE beacons can be strategically placed throughout a facility, and when used in conjunction with a mobile application, they can deliver the high level of location accuracy required for various use cases, including navigation, asset tracking, and contextual marketing.

To enable VLAN tagging for wireless Identity-Based Networking on a WLAN, an engineer must enable AAA override, which allows for dynamic VLAN assignment. Additionally, the RADIUS server attributes need to be updated to include tunnel type 64, medium type 65, and tunnel private group type 81, which are necessary for VLAN tagging information. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 A single SSID method satisfies the requirements for a BYOD policy that includes onboarding unknown machines, scalability, and low overhead on the wireless network. It simplifies network access for users and reduces overhead by minimizing broadcast traffic associated with multiple SSIDs.

The Cisco Hyperlocation feature requires enabling on both the wireless LAN controller and Cisco CMX to function correctly. This allows for precise location tracking by integrating data from both components. Additionally, if the Cisco CMX server is a virtual machine (VM), it is recommended to use a high-end VM to handle the processing demands of Cisco Hyperlocation deployments, ensuring optimal performance and accuracy.

When a client is authenticated but cannot pass traffic in the RUN state, it indicates that an ACL may be blocking the traffic post-authentication. Disabling or modifying this ACL to allow traffic can resolve the connectivity issue, ensuring that the client’s traffic flows correctly after authentication with Cisco ISE.

 Cisco Context Aware Services provide real-time tracking of mobile assets and users by gathering contextual information from networked devices. This service is not limited to wireless devices; it can track both wired and wireless devices within the network. The technology utilizes elements like Received Signal Strength Indicator (RSSI) and Time Difference of Arrival (TDoA) for location tracking and telemetry. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide, and Cisco Context Aware Software FAQ.

 If the administrator is unable to see interferers on the Cisco Prime Infrastructure maps, it could be due to the MSE (Mobility Services Engine) not being added and synchronized with Cisco Prime Infrastructure, which is essential for tracking and locating devices, including interferers. Additionally, if interferer tracking is not enabled on the MSE, it would not track or display the location of interferers on the maps. The other options, such as SNMP failure, reaching the Context Aware Service tracking limit, or inactive NSMP communication, would affect other aspects of network visibility but not specifically the tracking and display of interferers. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

The command cmxha convert backup is used on the backup Cisco CMX server to designate it as the secondary server in a high-availability deployment. This command helps to resolve the issue where both servers are considered primary. References: Cisco CMX high-availability documentation will provide more details on this command.

The issue described in the scenario occurs because when creating an Access Control List (ACL) to be used for managing traffic to the Wireless LAN Controller’s (WLC) CPU, it must be explicitly defined as a CPU ACL. If this specification is not made during the creation process, the ACL will not appear in the drop-down list when enabling the CPU ACL function. This is necessary because CPU ACLs are used to protect the WLC against potential Denial-of-Service (DoS) attacks by filtering incoming packets directed at the management interface before they are processed by the CPU. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

In a FlexConnect deployment, enabling FlexConnect Local Switching allows branch office APs to map client traffic directly onto the local LAN, bypassing the need to tunnel all traffic back to the WLC at the main campus. This is essential for corporate devices at branch offices to access local resources efficiently and to be mapped to the correct VLANs according to their VLAN tag ID and WLAN. This setting is not relevant for APs in Local mode at the main campus, as they already switch traffic locally by default.

References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

To take full advantage of the WLAN configuration, VoWLAN phones must support 802.11e, which is a standard for wireless QoS, and Wi-Fi Multimedia (WMM), which is a subset of 802.11e that provides prioritized media delivery. These standards ensure that voice traffic is prioritized appropriately in the wireless network. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

On a Cisco Catalyst 9800 Series Wireless Controller, the command set that prevents a FlexConnect AP from allowing wireless clients to connect when its Ethernet connection is nonoperational is the fallback-radio-shut command within the FlexConnect profile configuration. This command disables the radios on the AP, thus preventing client connections during Ethernet link failure. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

The issue with users configured for EAP-PEAP not being able to connect to the network, when a Cisco Wireless LAN Controller (WLC) is deployed using local EAP, typically points to a misconfiguration in the local EAP profile on the WLC. EAP-PEAP relies on a server-side certificate to create a secure TLS tunnel for the authentication process. If the local EAP profile is not correctly configured with the proper certificate or other necessary settings, the authentication process will fail, preventing users from connecting. References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

The Simple Certificate Enrollment Protocol (SCEP) is used to securely issue certificates to network devices in a scalable manner. When provisioning certificates on a Cisco Catalyst 9800 Series Wireless Controller using a third-party CA server, SCEP is the protocol that facilitates this process. It allows the controller to request and install certificates automatically, which is essential for establishing secure communications within the network. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

The image provided shows a packet capture with multiple entries displaying UDP traffic between two IP addresses using different ports (notably port number ‘16666’ which is commonly used for NMSP). Network Mobility Services Protocol (NMSP) is used by wireless controllers like WLCs to communicate with management software such as Cisco’s Mobility Services Engine or CMX. This protocol helps in managing various mobility services across wireless networks. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

When performing a Cisco Hyperlocation accuracy test, the relevant parameters include the X, Y real location and the client MAC address. The X, Y coordinates provide the actual location data needed for the test, while the client MAC address identifies the specific device being located.

In a FlexConnect group with local switching but central DHCP, clients can use features like multicast and static IP without any issues. However, fast roaming, which allows clients to move seamlessly between access points with minimal delay, requires the access points to handle client information locally. If the configuration is changed to allow local DHCP, then the access points can cache client credentials, enabling fast roaming.

References :=

• CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide
• Cisco documentation on FlexConnect configurations

VLAN-based central switching is the feature that meets the requirements stated. With this feature, when a subnet assigned to a client is available at the remote site, the traffic is offloaded locally. If the subnet is not available, the traffic is tunneled back to the Wireless LAN Controller (WLC). This setup allows for dynamic assignment of clients to specific IP subnets using Cisco Identity-Based Networking Services with ISE. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 Differentiated Services Code Point (DSCP) is the trust model that must be configured on the switch ports to which the APs are connected in local mode. This is because DSCP provides a way to classify and manage network traffic and to provide QoS. DSCP can be trusted on the switch port, and the AP can then mark the packets with the appropriate DSCP value, which will be retained across the network. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

In Cisco ISE version 2.1 for BYOD with a Single SSID setup, 802.1x must be configured to provide the necessary layer of security and to facilitate the device registration process. 802.1x authentication allows for the use of EAP (Extensible Authentication Protocol) to authenticate users before they can access the network. This ensures that only authorized devices can join the BYOD network, providing a secure method for device onboarding and access control. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

To track guest traffic flow using the WLAN infrastructure, the ‘detect and locate’ feature of Cisco CMX must be configured and used. This feature allows the engineer to monitor the location and movement of guests within the WLAN coverage area.

References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

The Voice VLAN feature on switches allows the network to distinguish between voice traffic and data traffic from wireless clients connected to IP phones. This is crucial for applying the appropriate QoS to ensure that voice traffic is prioritized over client data traffic. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide.

Allowing access to the Local Area Network (LAN) without implementing a Mobile Device Management (MDM) solution poses a significant security risk to a Bring Your Own Device (BYOD) policy. Without MDM, the organization lacks control over the personal devices that connect to its network, which could lead to unauthorized access to sensitive data, potential data breaches, and the inability to enforce security policies.

For a deployment that supports Cisco Connected Mobile Experiences (CMX), licenses for at least 3000 Access Points (APs), and wIPS licenses for 6000 sensors, a High-End vMSE is required. This version of MSE is designed to handle large-scale deployments with high license and sensor requirements, ensuring that the system can manage the data and analytics for such a substantial wireless environment. References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

Mobile Device Management (MDM) integration with Cisco ISE increases security for lost devices by providing functions such as data wipe and jailbreak/root detection. Data wipe allows the remote erasure of sensitive information from lost devices, preventing unauthorized access. Jailbreak/root detection helps identify compromised devices that may bypass standard security measures, ensuring that they do not access network resources.

To rename access points and add them to the correct AP groups on a wireless controller, the minimum custom attributes required using Cisco ISE TACACS is role1=WIRELESS. This role provides the necessary permissions for read/write access to wireless-related configurations. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

The output observed in Prime Infrastructure suggests that there is at least one strong interferer impacting connectivity at this site. This conclusion is drawn from observing areas marked with intense red coloring indicating high levels of RF interference which could degrade wireless performance significantly if not addressed. 

The configuration that must be applied in the RADIUS Authentication Settings section from the ISE Network Device page when clients are able to authenticate successfully but the ISE policies designed to place them on different interfaces are not working is to change the CoA Port. The CoA (Change of Authorization) port is used by ISE to send messages to the network device to apply different policies post-authentication. If the CoA port is not correctly configured, the network device will not receive or act upon these messages, resulting in clients not being placed on the correct interfaces as per ISE policies. References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

To address concerns about detecting spurious threats from channels not used by the wireless infrastructure, deploying APs in monitor mode (B) and local mode with WIPS submode (D) would be beneficial. Monitor mode allows APs to listen to the wireless spectrum and identify potential threats, while WIPS (Wireless Intrusion Prevention System) submode enhances the ability to detect and mitigate wireless threats. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

The default NMSP echo interval between Cisco MSE and a Wireless LAN Controller is 15 seconds. This interval determines how frequently the MSE sends echo messages to the WLC to maintain the NMSP connection and ensure that the link is active and operational. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

To segregate iOS-connected devices onto a guest SSID on VLAN 101 and the rest of the clients on VLAN 102, specific configurations are needed on the Cisco Catalyst 9800 Wireless LAN Controller (WLC). The correct configurations required are:

• Add local profiling policy under global security policy settings (Option B): This allows the WLC to profile devices based on their operating system. By identifying iOS devices, a local profiling policy can then direct these devices to the appropriate VLAN.
• Enable device classification on global wireless settings (Option E): Device classification is necessary for the WLC to differentiate between device types. Once enabled, it can apply different policies based on whether a device is recognized as an iOS device or not.

References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

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Enabling unicast AP multicast mode can correct the issue of increased controller CPU overhead and overall network utilization after multicast is enabled. This mode allows the controller to send multicast traffic to the APs as unicast, which is more efficient for the wireless medium and reduces the load on the controller’s CPU.

References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

 In FlexConnect deployments with local switching, dynamic VLAN assignments are facilitated by Cisco ISE through the use of specific RADIUS attributes. The Tunnel-Private-Group-ID attribute is essential for communicating the VLAN ID to the access point, which then applies it to the wireless client after successful authentication.

References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

The Cisco Aironet 600 Series OfficeExtend APs support various Layer 2 security options, including WPA+WPA2 and 802.1X. WPA and WPA2 provide secure encryption for wireless data, while 802.1X offers a robust authentication framework. These security options ensure that the wireless network is protected against unauthorized access and data breaches, which is crucial for remote workers connecting to the corporate network. References := CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

To separate different types of client authentication on a Cisco ISE deployment, policy sets and policy groups can be used. Policy sets allow the creation of policies based on conditions such as device type, while policy groups categorize clients for the application of specific policies. References: Cisco ISE documentation on policy sets and policy groups will have detailed information.

To ensure reliable streaming of multicast video over a wireless link, it’s essential to optimize the multicast settings on the controller. Option B, implementing video-stream for the multicast video on the controller, is a feature that optimizes the delivery of multicast streams by converting them into unicast streams for specific clients, thus improving reliability. Option C, allowing multicast-direct to work correctly, involves enabling multicast-direct globally, which allows multicast packets to be sent directly to clients without the need for them to subscribe to a specific multicast group, enhancing efficiency and reliability. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

When configuring multicast for two WLCs in different physical locations, each handling around 500 wireless clients, it is important to assign a unique multicast group address to each WLC. This ensures that multicast traffic is properly segregated and managed within each controller’s network.

References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

The Network Mobility Services Protocol (NMSP) is the protocol used by Cisco Mobility Services Engine (MSE) to communicate with Cisco Wireless LAN Controllers (WLCs). For NMSP messages to successfully pass through a firewall, the correct port must be allowed. The default port for NMSP traffic is TCP 16113. Therefore, to ensure communication between MSE and WLC using NMSP, TCP port 16113 must be allowed on the firewall. References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

Disabling DHCP proxy on the Cisco WLC and running the ip helper-address command under the VLAN interface to point to DHCP and the two ISE servers is the recommended action. This allows direct communication between clients and DHCP/ISE servers, which is necessary for accurate device profiling.

To establish connectivity between a Wireless LAN Controller (WLC) and Cisco’s Connected Mobile Experiences (CMX) through Network Mobility Services Protocol (NMSP), it is essential to enable NMSP on the WLC, which facilitates communication with location-based services like CMX. Additionally, for secure communication, it is necessary to add the MAC address of the Cisco CMX server to the WLC along with its SSC (Self-Signed Certificate) key, ensuring that both devices can authenticate each other and establish a trusted connection. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 To ensure the 1810 OEAP can join the controller from remote teleworker locations, the firewall must allow specific UDP ports that are used for AP communication with the controller. UDP ports 5246 and 5247 are used for Control and Provisioning of Wireless Access Points (CAPWAP) control and data messages, while UDP ports 12222 and 12223 are used for OfficeExtend APs’ data traffic. Blocking these ports would prevent the APs from joining the controller, hence they must be allowed on the firewall.

In Cisco Prime Infrastructure, the report that must be created to present a list of all rogue APs with a high severity score to senior management is the “Rogue APs” report. This report provides detailed information about rogue access points detected in the network, including their severity score, which helps in assessing the potential risk they pose to the network security. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

The wireless client cannot reach the RUN state because it is not receiving an IP address. This is a crucial step in the connection process, as a valid IP address is necessary for the client to communicate on the network. Without it, the client cannot achieve the RUN state, which indicates full authentication and association.

References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 In Cisco CMX, to view active RFID tags, the engineer needs to enable the tracking of these tags within the system settings. This is typically done by selecting an option that allows for RFID tag tracking, which makes them visible on location-based services like the Detect and Locate window of Cisco CMX. By enabling this feature, the system starts to interpret signals from RFID tags and displays their location accordingly. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 The benefit of using dual SSIDs with a captive portal on the onboard SSID compared to a single SSID solution is the ability to restrict allowed device types. With a dual SSID setup, one SSID can be used for onboarding new devices with a captive portal that can enforce policies and check the device type before allowing access to the main SSID. This helps in maintaining a secure and compliant network environment. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

The Cisco Aironet 1800s Active Sensor is designed to work with Cisco DNA Center. It is a compact, flexible sensor that provides insights into the wireless network’s health and is used for proactive monitoring and troubleshooting. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide, which includes information on Cisco DNA Center and compatible AP models.

 A successful RF jamming attack primarily disrupts WLAN services by overwhelming the network with noise or unwanted signals, making it impossible for legitimate devices to communicate effectively. While physical damage to AP hardware is not a direct outcome of RF jamming, the persistent interference can lead to hardware malfunction due to overheating or overcompensation for the poor signal environment. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide.

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In Quality of Service (QoS) for networking, Class of Service (COS) and Differentiated Services Code Point (DSCP) are used for traffic classification and prioritization. Voice traffic is generally given high priority due to its sensitivity to delay and requires proper tagging to maintain quality over the network.

The correct mapping for voice traffic, according to best practices, is a COS value of 5 mapped to a DSCP value of 46. This is because DSCP 46 corresponds to Expedited Forwarding (EF), which is typically used for voice traffic prioritization in IP networks.

The exhibit shows the output from a command on a network device that displays the current mappings between COS values and DSCP values. The mapping that needs modification for correct voice traffic tagging can be identified by looking at the standard practice for voice QoS, which uses a COS value of 5 mapped to a DSCP value of 46.

References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

The AAA override feature on a WLAN allows for individualized security policies to be applied to users after they are authenticated by the AAA server, which in this case is Cisco ISE (Identity Services Engine). The company policy requires that all users be denied access to any resources until they pass validation. By using AAA override, the network can enforce access control policies based on user credentials and group membership, ensuring that users cannot access network resources until they have been validated by Cisco ISE. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

In this scenario where branch wireless users can still associate locally but cannot access head office services due to WAN downtime indicates that Cisco FlexConnect is likely in use. The correct elements are: A - authentication-local/switch-local: This means that client authentication and data switching are happening locally at the branch. E - standalone mode: With WAN down, FlexConnect APs operate in standalone mode allowing clients to associate even without connectivity back to WLC. F - WEB authentication: This could be used as an authentication method regardless of WAN state since it’s processed locally at AP level. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

For guests to reach a Web Authentication Redirect page while blocking web management traffic to the controller, guest client HTTPS traffic must be allowed to a specific IP address that does not interfere with management access. The virtual interface IP on a Cisco Wireless LAN Controller serves as a DHCP relay and is used for web authentication processes. Therefore, allowing HTTPS traffic to this IP enables guests to reach the redirect page without granting them access to manage the controller. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

When configuring access control on a WLC using a TACACS+ server for centralized authentication on network devices, the role value that must be configured under the shell profile on the TACACS+ server for a user with read-only permissions is “MONITOR”. This role restricts the user to monitoring functions without the ability to make changes to the configuration. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

 In a self-registration setup for guest/BYOD devices, when an employee tries to connect multiple devices simultaneously, the system allows the registration of all devices. However, it restricts the active connection to only one device at a time. This ensures that network resources are not overburdened by a single user connecting multiple devices. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

To segregate all iPads on the guest WLAN to a separate VLAN without using Cisco ISE, the engineer can create a local policy on the WLC (option A). This local policy can be configured to identify iPad devices and assign them to a specific VLAN based on their device profile or other identifying characteristics. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide, especially the sections that cover local policies and device profiling on the WLC.

If the Cisco 5520 Series Wireless LAN Controller is no longer manageable via the network after implementing a CPU ACL, permit statements must be added to the top of the ACL in both directions (A). These statements should specify the network from which management is allowed and the virtual interface of the controller to ensure proper management access. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 For a wireless network supporting voice and video applications for Apple devices, especially with Fastlane implementation, the QoS profile to configure on the user WLAN for iPhones updated to version 14.5.432302546 is Platinum. This profile provides the highest level of QoS, ensuring priority for voice and video traffic. References:= (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

The FlexConnect AP Upgrade feature allows for a selective upgrade process within a FlexConnect group. By not setting any master APs, the WLC will automatically select one AP of each model with the lowest MAC address to receive the upgrade directly from the controller. This ensures that the upgrade is distributed efficiently across different AP models in the group without manual intervention.

References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

When FlexConnect APs are in standalone mode due to losing connection to the WLC, they should still be able to serve clients if local switching and authentication are enabled. The issue described occurs because FlexConnect Local Authentication is disabled. With local auth enabled, the AP can authenticate clients directly, without needing to communicate with the WLC, thus allowing the SSID to remain advertised and clients to stay connected even if the WLC is unreachable. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide