Cisco 300-430 Practice Test Questions, Exam Dumps

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300-430 Cisco Practice Test Questions and Exam Dumps

Question No 1:

In a branch office deployment, a FlexConnect Access Point (AP) is set to operate in standalone mode. It has been observed that when the connection to the Wireless LAN Controller (WLC) is lost, all clients are disconnected, and the SSID is no longer advertised. This behavior occurs even though FlexConnect local switching is enabled.

Which setting is causing this behavior?

A. ISE NAC is enabled
B. 802.11r Fast Transition is enabled
C. Client Exclusion is enabled
D. FlexConnect Local Authentication is disabled

Answer:

D. FlexConnect Local Authentication is disabled

Explanation:

In a FlexConnect deployment, Access Points (APs) can operate in either centralized or local mode, depending on whether they are connected to the Wireless LAN Controller (WLC). When the AP loses connection to the WLC, it can still support local switching and authentication for clients if configured properly.

In the scenario described, the issue occurs when the AP is in standalone mode, meaning it loses its connection to the WLC, and all clients are disconnected. The key factor here is that FlexConnect local switching is enabled, but clients still get disconnected because the SSID is not advertised. This suggests that a setting within the FlexConnect configuration is preventing the AP from functioning as expected when disconnected from the WLC.

Option A: ISE NAC is enabled

Incorrect. ISE NAC (Network Access Control) enables security policies to control network access but does not directly affect the behavior of FlexConnect APs in terms of local switching and SSID advertisement. NAC would not prevent the AP from advertising the SSID or cause disconnection issues when the WLC is unreachable.

Option B: 802.11r Fast Transition is enabled

Incorrect. 802.11r Fast Transition (FT) allows for quicker roaming between APs. While it can improve the user experience in a roaming scenario, it does not directly affect the ability of an AP to continue advertising an SSID or support local switching when the WLC is disconnected. It may affect roaming behavior but not the disconnection issue described.

Option C: Client Exclusion is enabled

Incorrect. Client Exclusion is a mechanism used to temporarily block a client from accessing the network due to policy violations or issues like excessive retries. It would not cause the SSID to stop being advertised or cause clients to be disconnected if the WLC is lost.

Option D: FlexConnect Local Authentication is disabled

Correct. When FlexConnect Local Authentication is disabled, the AP is unable to authenticate clients locally if the connection to the WLC is lost. This means the AP cannot process client authentication or continue to operate as a standalone unit when disconnected from the WLC. Even though local switching is enabled, without local authentication, the AP cannot authenticate or advertise the SSID, leading to disconnections and the SSID being no longer advertised.

The behavior where all clients are disconnected and the SSID is no longer advertised when the FlexConnect AP loses connection to the WLC is due to the fact that FlexConnect Local Authentication is disabled. For the AP to continue functioning properly in standalone mode with local switching, local authentication must be enabled, allowing the AP to handle client connections and advertisements even without a connection to the WLC.

Thus, the correct answer is:

D. FlexConnect Local Authentication is disabled.

Question No 2:

An engineer is tasked with implementing intrusion protection for a WLAN in a building where the AP coverage is sufficient, but on-channel attacks are the primary security concern. The building is historic, and adding additional Access Points (APs) is challenging due to the restrictions in place. To ensure effective security and protect the WLAN from attacks, the engineer needs to configure the appropriate AP mode and submode.

Which AP mode and submode should the engineer implement?

A. AP mode: local, AP submode: none
B. AP mode: monitor, AP submode: WIPS
C. AP mode: monitor, AP submode: none
D. AP mode: local, AP submode: WIPS

Answer:

B. AP mode: monitor, AP submode: WIPS

Explanation:

To protect a WLAN from on-channel attacks, such as jamming, deauthentication, and other types of interference, it is essential to use the appropriate AP mode and submode for intrusion protection. Given the specific scenario — adequate AP coverage and the difficulty of adding additional APs in a historic building — the correct approach is to utilize an AP mode that focuses on monitoring and intrusion detection.

Option A: AP mode: local, AP submode: none

Incorrect. In local mode, the AP serves as the primary access point for wireless clients and handles data traffic. The "none" submode indicates no special features enabled for intrusion protection. This mode is more suited for serving clients, not for monitoring or preventing attacks.

Option B: AP mode: monitor, AP submode: WIPS

Correct. In monitor mode, the AP is used exclusively for monitoring the wireless environment without serving clients. This mode allows the AP to listen for suspicious activity or attacks on the network. WIPS (Wireless Intrusion Prevention System) is a submode designed to detect and protect against various types of wireless attacks, including on-channel attacks like deauthentication and jamming. This configuration allows the AP to actively detect, prevent, and mitigate attacks on the WLAN without adding additional APs. It fits the scenario where the building's historic nature makes it difficult to add extra APs but still requires robust intrusion protection.

Option C: AP mode: monitor, AP submode: none

Incorrect. In monitor mode, the AP can monitor for interference and attacks, but without the WIPS submode, the AP will not actively engage in preventing or mitigating attacks. It will only observe the network but not provide any active protection or intrusion prevention.

Option D: AP mode: local, AP submode: WIPS

Incorrect. In local mode, the AP is dedicated to serving client traffic, not for monitoring and detecting attacks. While WIPS is useful for intrusion detection and prevention, it requires the AP to be in monitor mode to function properly. Local mode with WIPS would not provide the desired security benefits.

For intrusion protection focused on on-channel attacks and with the constraints of the building’s historic nature (which limits the ability to add APs), monitor mode with the WIPS submode is the correct choice. This configuration allows the AP to monitor the wireless environment for attacks and actively protect the network from intrusions without needing additional hardware.

Thus, the correct answer is:

B. AP mode: monitor, AP submode: WIPS.

Question No 3:

An engineer is configuring a FlexConnect group for access points at a remote location. The configuration includes local switching for data traffic, but centralized DHCP for IP address assignment. The engineer is looking to enable a specific client feature that is dependent on a change in the current configuration.

Which client feature becomes available only if the configuration is modified?

A. Multicast
B. Static IP
C. Fast Roaming
D. mDNS

Answer:

C. Fast Roaming

Explanation:

In a FlexConnect deployment, access points can be configured to either use local switching or centralized switching. Local switching means that the data traffic from wireless clients is forwarded directly to the local AP, bypassing the Wireless LAN Controller (WLC). However, other aspects such as DHCP can be handled centrally. Understanding the impact of local switching with centralized DHCP is key to identifying the available features for clients in the WLAN.

Here’s a breakdown of the possible client features:

Option A: Multicast

Incorrect. Multicast support in FlexConnect mode is independent of whether DHCP is centralized or local. The ability to forward multicast traffic can be supported with local switching. This feature doesn't necessarily require any change from the current configuration in order to function properly.

Option B: Static IP

Incorrect. The configuration of static IP addresses is typically done on the client side and is independent of the switching mode (local or centralized). Static IP addressing is not dependent on how the DHCP service is configured, so it doesn’t require any modification to the existing setup.

Option C: Fast Roaming

Correct. Fast Roaming (also known as 802.11r) is a feature that allows clients to roam more quickly between APs, reducing the time it takes to reconnect to the network when moving across access points. Fast Roaming requires the local switching configuration to be modified to allow seamless roaming behavior. Specifically, fast roaming is enabled when the APs support centralized or local authentication with centralized key management, both of which are prerequisites for 802.11r fast roaming. Since the engineer has configured local switching with centralized DHCP, this feature will only become available once certain settings are adjusted to support fast roaming.

Option D: mDNS

Incorrect. mDNS (Multicast DNS) is a protocol that enables devices on the same local network to discover each other by name. This is supported in FlexConnect, and its functionality isn’t directly dependent on whether DHCP is centralized or local. It is more tied to the configuration of the multicast services rather than specific to local switching or centralized DHCP.

The configuration change needed to enable Fast Roaming in a FlexConnect group is related to ensuring proper key management and roaming settings. While multicast, static IP, and mDNS features can work without changes to the configuration, Fast Roaming requires adjustments to support seamless transitions between APs. Therefore, the client feature that becomes available once the configuration is adjusted is:

C. Fast Roaming.

Question No 4:

In a FlexConnect deployment at a remote office, there are five 2702i indoor APs and two 1532i outdoor APs. A code upgrade is performed, and FlexConnect Smart AP Image Upgrade is used. However, no FlexConnect Master AP has been configured.

How many image transfers will occur between the WLC and the APs during the upgrade process?

A. 1
B. 2
C. 5
D. 7

Answer:

D. 7

Explanation:

In a FlexConnect deployment, when performing a code upgrade with FlexConnect Smart AP Image Upgrade, the WLC needs to transfer the new software image to the Access Points (APs). The transfer process typically involves the WLC pushing the image to each AP in the deployment, and it is heavily influenced by the configuration of the FlexConnect Master AP.

The key detail here is that no FlexConnect Master AP has been configured. When a Master AP is configured in a FlexConnect deployment, the Master AP holds the image and distributes it to the other APs in the group. Since no Master AP is set in this scenario, the WLC will be responsible for sending the image to each AP individually, one at a time.

Here’s how the image transfer process works:

The WLC will transfer the image to the five 2702i indoor APs individually.
The WLC will also transfer the image to the two 1532i outdoor APs individually.

Since the WLC must send the image to each AP, and there are seven APs in total (5 indoor + 2 outdoor), the total number of image transfers will be 7.

Breakdown of image transfers:

5 indoor 2702i APs → 5 image transfers
2 outdoor 1532i APs → 2 image transfers

Thus, the total number of image transfers is:

5 + 2 = 7 image transfers

Why the other options are incorrect:

A. 1 – This would imply a single image transfer, but there are multiple APs in the deployment, so the image must be sent to each one individually without a FlexConnect Master AP.
B. 2 – This suggests only two image transfers, which would be the case if there were just two APs. However, there are seven APs in total.
C. 5 – This would imply only the five 2702i indoor APs are being updated, but the 1532i outdoor APs also require an image transfer, making this answer incorrect.

In the absence of a FlexConnect Master AP, the WLC must transfer the image to each AP individually. Since there are seven APs in total (five indoor and two outdoor), the total number of image transfers is:

D. 7.

Question No 5:

In a Cisco Catalyst 9800 Series Wireless Controller deployment, the engineer needs to enable Cisco OEAP (Office Extend Access Point) functionality to extend the wireless network to a remote office. The engineer is configuring the controller, and it is important to know the correct location to enable the Cisco OEAP feature.

Where should Cisco OEAP be enabled on a Cisco Catalyst 9800 Series Wireless Controller?

A. RF Profile
B. Flex Profile
C. Policy Profile
D. AP Join Profile

Answer:

D. AP Join Profile

Explanation:

In a Cisco Catalyst 9800 Series Wireless Controller, the Office Extend Access Point (OEAP) feature is used to extend the wireless network to remote offices. This feature allows APs to be deployed in remote locations while still being managed centrally by the main wireless controller. To enable OEAP functionality on a Cisco Catalyst 9800 Series Wireless Controller, the appropriate settings need to be configured under the AP Join Profile.

Explanation of Each Option:

A. RF Profile
Incorrect. The RF Profile is used to define settings related to the radio frequency environment, such as power levels and channel settings. It is not responsible for enabling OEAP features.
B. Flex Profile
Incorrect. The Flex Profile is used for FlexConnect deployments, allowing access points to operate in local switching mode, typically used for remote offices or branch locations. While FlexConnect is useful for certain deployment types, OEAP is specifically configured under the AP Join Profile, not the Flex Profile.
C. Policy Profile
Incorrect. The Policy Profile contains settings related to security, traffic filtering, and QoS. It is used to apply policies to users or devices connecting to the wireless network, but it does not handle the OEAP feature.
D. AP Join Profile
Correct. The AP Join Profile is the correct place to enable and configure OEAP functionality. This profile contains the settings that control how access points join the controller and how remote APs, including OEAPs, are managed and provisioned. By enabling OEAP mode within the AP Join Profile, the Cisco 9800 Series Wireless Controller is able to manage OEAPs for remote office connectivity.

To configure Cisco OEAP on a Cisco Catalyst 9800 Series Wireless Controller, you need to enable it under the AP Join Profile. The AP Join Profile allows the controller to properly manage and configure remote access points, making it the correct location for enabling OEAP functionality.

Thus, the correct answer is:

D. AP Join Profile.

Question No 6:

An engineer is configuring a Cisco Wireless LAN Controller (WLC) and needs to add a VLAN with VLAN ID 30 to a FlexConnect group named BranchA-FCG. The engineer is using the command-line interface (CLI) to complete this task and must choose the correct command syntax to add the VLAN to the group.

Which CLI command will add a VLAN with VLAN ID 30 to the FlexConnect group named BranchA-FCG?

A. config flexconnect BranchA-FCG vlan 30 add
B. config flexconnect BranchA-FCG vlan add 30
C. config flexconnect group BranchA-FCG vlan 30 add
D. config flexconnect group BranchA-FCG vlan add 30

Answer:

D. config flexconnect group BranchA-FCG vlan add 30

Explanation:

When configuring a FlexConnect group on a Cisco Wireless LAN Controller (WLC), you need to specify the VLANs that should be used for wireless clients in that group. FlexConnect is a deployment mode where access points (APs) operate with local switching of wireless traffic while still being managed centrally by the WLC. To configure a VLAN in a FlexConnect group, the config flexconnect group command is used, followed by specifying the group name, the VLAN ID, and the action (add).

Breakdown of the Command Options:

A. config flexconnect BranchA-FCG vlan 30 add
Incorrect. The correct syntax requires the command to specify the group before adding the VLAN, not directly on the FlexConnect group.
B. config flexconnect BranchA-FCG vlan add 30
Incorrect. This command incorrectly places the VLAN ID in the middle of the command and does not follow the proper syntax.
C. config flexconnect group BranchA-FCG vlan 30 add
Incorrect. This command has the correct sequence but places the VLAN ID in the wrong order. The VLAN ID should be placed after the "vlan add" portion of the command.
D. config flexconnect group BranchA-FCG vlan add 30
Correct. This is the correct syntax to add VLAN ID 30 to the BranchA-FCG FlexConnect group. The command properly specifies the FlexConnect group name followed by the vlan add operation and the VLAN ID.

The correct command to add VLAN 30 to the BranchA-FCG FlexConnect group is:

D. config flexconnect group BranchA-FCG vlan add 30.

This command follows the correct syntax and ensures that VLAN 30 is added to the specified FlexConnect group. This is essential for enabling the FlexConnect access points within the group to properly handle traffic associated with this VLAN.

Question No 7:

A corporation with offices in different countries is using MPLS to connect its locations. Senior management wants to enable wireless network access for all employees while ensuring strong connectivity and minimizing delays. An engineer is tasked with controlling the amount of traffic that is sent between the Access Points (APs) and the central Wireless LAN Controller (WLC).

Which configuration should the engineer use to minimize traffic between the APs and the central WLC while ensuring strong connectivity?

A. FlexConnect mode with central switching enabled
B. FlexConnect mode with central authentication
C. FlexConnect mode with OfficeExtend enabled
D. FlexConnect mode with local authentication

Answer:

A. FlexConnect mode with central switching enabled

Explanation:

When dealing with a distributed network, especially one that spans multiple countries and uses MPLS for connectivity, it is crucial to minimize the amount of traffic that has to traverse across the WAN link to the central Wireless LAN Controller (WLC). This is important to maintain strong connectivity and reduce delays in network performance.

One of the most effective ways to achieve this is by using FlexConnect mode on Cisco Wireless Access Points (APs). FlexConnect allows for local switching of wireless traffic, which means that the APs can locally forward traffic between wireless clients and the wired network, without always needing to send traffic back to the central WLC.

Breakdown of Options:

A. FlexConnect mode with central switching enabled
Correct. In FlexConnect mode with central switching enabled, the Access Points (APs) still rely on the central WLC for management and configuration, but traffic from wireless clients is switched locally at the AP. This helps minimize the amount of traffic that traverses between the APs and the WLC, especially for data traffic. The APs will forward user traffic directly to the local LAN rather than sending it back to the central WLC, ensuring faster communication and reducing latency.
B. FlexConnect mode with central authentication
Incorrect. This option focuses on the centralized authentication of users via a centralized authentication server (such as RADIUS). While this is useful for ensuring secure wireless access, it does not directly address the issue of controlling traffic between the APs and the WLC. The traffic would still need to be sent back to the central WLC for processing.
C. FlexConnect mode with OfficeExtend enabled
Incorrect. OfficeExtend is a specific mode used for remote office or home-office scenarios, enabling remote access points to connect back to the central WLC. However, this configuration is typically used when remote offices need secure access to the corporate network, not specifically to minimize traffic between APs and the central WLC in a large distributed network.
D. FlexConnect mode with local authentication
Incorrect. Local authentication allows the APs to authenticate wireless clients directly at the local site, reducing the need to authenticate through the central WLC. While this can reduce delays during the authentication process, it does not address the main issue of controlling traffic between the APs and the WLC. It only applies to the initial authentication process, not data traffic flow.

The best approach to minimize traffic between the APs and the central WLC while ensuring strong connectivity and reducing delays is:

A. FlexConnect mode with central switching enabled.

This configuration allows local traffic switching, which reduces WAN congestion and provides improved performance in a geographically dispersed network, such as one connected via MPLS.

Question No 8:

An engineer is configuring a Cisco Aironet 600 Series OfficeExtend AP for a remote user who needs to access and print to a printer located on their home network. The engineer is tasked with configuring the Cisco Wireless LAN Controller (WLC) to ensure that the remote user can print to the local printer while maintaining secure access to the corporate network.

What should the engineer configure on the Cisco WLC to allow the user to print to a printer on their home network?

A. Split tunneling
B. SE-connect
C. FlexConnect
D. AP failover priority

Answer:

A. Split tunneling

Explanation:

When configuring an OfficeExtend Access Point (OEAP) for remote users, one of the key goals is to allow the remote user to have access to both their corporate network (via the Wireless LAN Controller, or WLC) and their local home network (for tasks like printing to a printer on the home network). The feature that enables this is split tunneling.

What is split tunneling?

Split tunneling allows traffic to be divided into two paths:

Traffic destined for the corporate network (or other remote networks) is sent through the VPN tunnel (managed by the WLC).
Traffic destined for the local home network (such as printing to a local printer) bypasses the VPN and goes directly to the local network.

This is crucial because, without split tunneling, all traffic would be forced through the VPN tunnel, which would route all traffic back to the central WLC, creating unnecessary delays and preventing access to local devices like printers.

Breakdown of Options:

A. Split tunneling
Correct. By configuring split tunneling on the Cisco WLC, the remote user's traffic destined for their home network (e.g., printing to a local printer) will bypass the corporate VPN tunnel, allowing for efficient local communication. Meanwhile, traffic that needs to access the corporate network will go through the VPN tunnel to the WLC, ensuring secure access to corporate resources.
B. SE-connect
Incorrect. SE-connect is a Cisco feature that provides a method for managing secure remote office access, but it does not directly address the ability to print to a local printer on the home network.
C. FlexConnect
Incorrect. FlexConnect allows local switching of client traffic at remote sites, but it is typically used for remote FlexConnect APs where wireless traffic can be switched locally at the AP. It is not specifically used for enabling direct access to a home network printer while still providing access to the corporate network.
D. AP failover priority
Incorrect. AP failover priority refers to AP redundancy and determines which AP will take over when a primary AP fails. This is unrelated to configuring the remote user's ability to access a local printer.

The correct answer is:

A. Split tunneling.

By enabling split tunneling on the Cisco WLC, the remote user will be able to access both the corporate network via the VPN and their home network (for tasks like printing) without routing unnecessary traffic through the corporate VPN tunnel. This ensures efficient network use and seamless operation.

Question No 9:

An engineer is tasked with configuring a Cisco Wireless LAN Controller (WLC) to support Cisco Aironet 600 Series OfficeExtend APs. The engineer needs to ensure that appropriate Layer 2 security measures are configured for these remote APs.

Which two Layer 2 security options are supported in this environment for the OfficeExtend APs? (Choose two.)

A. Static WEP + 802.1X
B. WPA+WPA2
C. Static WEP
D. CKIP
E. 802.1X

Answer:

B. WPA+WPA2
E. 802.1X

Explanation:

When configuring Cisco Aironet 600 Series OfficeExtend APs, which are typically deployed in remote office or home office environments, the goal is to provide secure, efficient, and manageable wireless connectivity. Layer 2 security is a critical aspect of the deployment, as it ensures the wireless traffic remains secure between the AP and the connected devices.

Cisco supports several Layer 2 security options, which vary in terms of strength, compatibility, and deployment flexibility. Below is an explanation of the supported and unsupported security options for the Cisco WLC in this context:

Supported Layer 2 Security Options:

B. WPA+WPA2
Correct. Both WPA (Wi-Fi Protected Access) and WPA2 (Wi-Fi Protected Access 2) are widely supported and provide strong security using AES (Advanced Encryption Standard) for encryption and TKIP (Temporal Key Integrity Protocol) for key management. WPA and WPA2 provide robust security and are the standard security protocols for most wireless deployments, including those involving Cisco Aironet OfficeExtend APs.
E. 802.1X
Correct. 802.1X is a widely-used network access control protocol that ensures secure authentication for wireless clients. 802.1X uses an authentication server (usually RADIUS) to authenticate users or devices attempting to connect to the wireless network. This method offers strong, centralized control over who is allowed to connect to the network, making it a popular option for ensuring security in environments using Cisco Aironet 600 Series OfficeExtend APs.

Unsupported or Less Secure Options:

A. Static WEP + 802.1X
Incorrect. While 802.1X is supported, pairing it with Static WEP (Wired Equivalent Privacy) is not a recommended or secure configuration. WEP is considered obsolete and insecure because it can be easily cracked. Even though 802.1X provides robust authentication, combining it with WEP negates its effectiveness, and this configuration is generally not supported in newer deployments.
C. Static WEP
Incorrect. WEP is an outdated and insecure encryption standard. It is highly vulnerable to attacks and is not recommended for modern wireless environments. Therefore, it is not supported for Cisco Aironet 600 Series OfficeExtend APs, which require more secure encryption methods like WPA2 or 802.1X.
D. CKIP
Incorrect. CKIP (Cisco Key Integrity Protocol) was a proprietary encryption protocol used by Cisco in the past. However, it is now obsolete and no longer supported in most modern Cisco equipment, including Cisco Aironet 600 Series OfficeExtend APs.

To secure a Cisco Aironet 600 Series OfficeExtend AP deployment, the two recommended and supported Layer 2 security options are:

B. WPA+WPA2 and E. 802.1X.

These options provide a combination of strong encryption and robust user/device authentication, ensuring the security of the wireless network for remote users.