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Question 201

An administrator needs to authenticate wireless users against a centralized identity service and assign access based on user credentials. Which solution is most appropriate?

1. Static MAC filtering
2. 802.1X with RADIUS
3. Open authentication
4. WPA2-Personal

Correct Answer: 2

Explanation

802.1X provides port-based network access control and can use a RADIUS server as the centralized authentication backend. In a wireless environment, users can authenticate using individual credentials rather than sharing a single wireless password. The authentication server can also work with network policies to determine the appropriate access level for authenticated users. Static MAC filtering identifies devices but does not provide equivalent user authentication. Open authentication provides no comparable identity verification, while WPA2-Personal uses a shared pre-shared key. Therefore, 802.1X with RADIUS is appropriate for centralized user authentication.

Question 202

Which Aruba Central feature provides a logical location-based organization for devices and helps administrators manage infrastructure according to physical sites?

1. Device inventory
2. Firmware dashboard
3. Sites
4. Client table

Correct Answer: 3

Explanation

Aruba Central Sites provide a logical representation of physical locations within the managed environment. Administrators can organize devices according to locations such as offices, branches, campuses, or other operational sites. This organization can simplify monitoring and operational visibility by associating infrastructure with its physical deployment. Device inventory provides information about managed devices, firmware dashboards focus on software compliance, and client tables provide endpoint information. Therefore, Sites are the appropriate Aruba Central feature when the administrator needs to organize infrastructure according to physical locations.

Question 203

An administrator wants to use WPA3 for an enterprise wireless deployment. Which authentication approach is commonly associated with WPA3-Enterprise?

1. 802.1X authentication
2. Static MAC filtering
3. Open authentication
4. Shared WEP key

Correct Answer: 1

Explanation

WPA3-Enterprise is designed for enterprise environments where centralized authentication is required. It commonly uses 802.1X authentication with an authentication server such as RADIUS. This model allows individual users or devices to authenticate using enterprise credentials rather than relying on one shared wireless password. Static MAC filtering does not provide equivalent identity-based authentication, open authentication provides no comparable protection, and WEP is an obsolete wireless security mechanism. Therefore, 802.1X authentication is the appropriate approach for a WPA3-Enterprise deployment.

Question 204

Which Wi-Fi 6 feature allows an access point to divide a wireless channel into smaller resource units so multiple clients can be scheduled efficiently?

1. MU-MIMO
2. BSS coloring
3. Target Wake Time
4. OFDMA

Correct Answer: 4

Explanation

OFDMA, or Orthogonal Frequency Division Multiple Access, is an important Wi-Fi 6 capability that allows a channel to be divided into smaller resource units. The access point can schedule different clients using portions of the available channel resources. This can improve efficiency in environments containing many devices, especially when clients transmit or receive relatively small amounts of data. MU-MIMO addresses simultaneous spatial streams, BSS coloring helps distinguish overlapping BSS transmissions, and Target Wake Time helps manage client power usage. Therefore, OFDMA is the feature that divides channel resources into smaller units.

Question 205

An administrator wants to improve wireless performance in a high-density environment by allowing an access point to communicate with multiple compatible clients simultaneously using multiple spatial streams. Which technology is relevant?

1. MU-MIMO
2. DHCP
3. RADIUS
4. LLDP

Correct Answer: 1

Explanation

MU-MIMO, or Multi-User Multiple Input Multiple Output, allows compatible wireless infrastructure to communicate with multiple clients using multiple spatial streams. This can improve wireless efficiency in suitable environments by allowing transmissions to multiple users rather than treating every transmission as strictly sequential. The actual benefit depends on client capabilities, radio conditions, traffic patterns, and access point implementation. DHCP provides IP configuration, RADIUS provides authentication services, and LLDP provides neighbor information. Therefore, MU-MIMO is the technology relevant to simultaneous multi-client spatial-stream communication.

Question 206

What is the primary purpose of BSS coloring in Wi-Fi 6 networks?

1. Encrypt management frames
2. Help distinguish transmissions from overlapping BSSs
3. Replace WPA3 authentication
4. Assign IP addresses to clients

Correct Answer: 2

Explanation

BSS coloring is a Wi-Fi 6 mechanism designed to help wireless devices distinguish transmissions belonging to different Basic Service Sets. This can improve spatial reuse in environments where multiple wireless networks operate on overlapping channels. By identifying the originating BSS, devices can make more informed decisions about whether a transmission from another BSS needs to be treated as interference. BSS coloring does not provide encryption, replace WPA3 authentication, or assign IP addresses. Therefore, helping distinguish transmissions from overlapping BSSs is its primary purpose.

Question 207

A wireless administrator wants compatible clients to remain asleep for longer periods and wake at scheduled times to exchange traffic. Which Wi-Fi capability supports this behavior?

1. BSS coloring
2. OFDMA
3. Target Wake Time
4. LLDP

Correct Answer: 3

Explanation

Target Wake Time, or TWT, allows compatible wireless devices and access points to negotiate scheduled times when a client should wake and communicate. This can reduce unnecessary radio activity and conserve client battery power. TWT is particularly useful for compatible devices that can operate according to predictable communication schedules. BSS coloring is intended to improve spatial reuse, OFDMA divides channel resources into resource units, and LLDP provides network neighbor information. Therefore, Target Wake Time is the appropriate Wi-Fi capability for scheduled client wake periods.

Question 208

An administrator wants an Aruba wireless client to receive an address from a DHCP server located on a different IP subnet. Which network function is required?

1. DHCP relay
2. Port mirroring
3. LACP
4. SNMP

Correct Answer: 1

Explanation

A DHCP relay forwards DHCP requests between clients and a DHCP server located on another IP subnet. DHCP discovery traffic is initially local to the client’s broadcast domain, so a relay function is required when the DHCP server is not directly connected to that subnet. The relay receives the request and forwards it toward the appropriate DHCP server, allowing centralized DHCP infrastructure to serve multiple network segments. Port mirroring copies traffic for analysis, LACP aggregates links, and SNMP provides monitoring. Therefore, DHCP relay is the required function for this scenario.

Question 209

An administrator needs to restrict communication between two VLANs according to source and destination IP addresses and protocols. Which feature should be configured?

1. NTP
2. LLDP
3. DHCP snooping
4. ACL

Correct Answer: 4

Explanation

An Access Control List, or ACL, can be used to control traffic according to defined criteria such as source IP address, destination IP address, protocol, and service ports. ACLs can therefore restrict communication between different network segments or VLANs according to an organization’s security requirements. NTP synchronizes clocks, LLDP discovers neighboring devices, and DHCP snooping protects against unauthorized DHCP server activity. ACL rules should be carefully designed because incorrect ordering or overly restrictive rules can block legitimate traffic. Therefore, an ACL is the appropriate feature for controlling inter-VLAN communication.

Question 210

Which wireless technology is designed to provide an encrypted connection on an open Wi-Fi network without requiring a traditional shared password?

1. WPA2-Personal
2. MAC authentication
3. Enhanced Open
4. WEP

Correct Answer: 3

Explanation

Enhanced Open is based on Opportunistic Wireless Encryption and is designed to provide encryption for open wireless networks without requiring users to enter a shared password. It improves privacy compared with completely open Wi-Fi because traffic is encrypted on the wireless link. However, Enhanced Open does not provide the same user authentication model as an enterprise network using 802.1X. WPA2-Personal uses a shared pre-shared key, MAC authentication identifies devices, and WEP is an obsolete security technology. Therefore, Enhanced Open is appropriate for passwordless encrypted open Wi-Fi access.

Question 211

An administrator wants to provide IPv6 hosts with information about the local IPv6 network prefix and default gateway. Which mechanism normally provides this information?

1. IPv6 Router Advertisements
2. ARP
3. DHCP snooping
4. LACP

Correct Answer: 1

Explanation

IPv6 Router Advertisements are sent by IPv6 routers to provide hosts with important network information. This can include the network prefix, default router information, and flags indicating how hosts should obtain additional configuration. IPv6 hosts can use Router Advertisements as part of Stateless Address Autoconfiguration and other IPv6 configuration processes. ARP is associated with IPv4 address resolution and is not used in the same way for IPv6. DHCP snooping protects DHCP operations, while LACP aggregates physical links. Therefore, IPv6 Router Advertisements provide the relevant network information.

Question 212

An administrator wants to identify wireless clients that may have unusual behavior or configuration issues using Aruba Central analytics. Which capability is designed to provide additional client-focused visibility?

1. Port security
2. Client Insights
3. STP
4. DHCP relay

Correct Answer: 2

Explanation

Client Insights provides additional visibility into client behavior and characteristics within the Aruba management environment. It can help administrators understand client types, connectivity information, and potentially identify unusual or problematic client behavior based on available analytics. This information can assist with troubleshooting and network operations. Port security controls MAC addresses on switch ports, STP manages Layer 2 topology, and DHCP relay forwards DHCP requests between networks. Therefore, Client Insights is the capability designed to provide enhanced client-focused visibility.

Question 213

An administrator needs to ensure that network devices use a centralized and secure management authentication system supporting command authorization. Which protocol is commonly used for this purpose?

1. DNS
2. NTP
3. TACACS+
4. LLDP

Correct Answer: 3

Explanation

TACACS+ is commonly used for centralized administrative authentication and authorization of network device management access. It can separate authentication, authorization, and accounting functions, allowing organizations to control what administrative users are permitted to do. This makes it useful in environments where administrators require different command privileges. DNS provides name resolution, NTP provides time synchronization, and LLDP provides information about directly connected neighbors. Therefore, TACACS+ is the protocol commonly selected when centralized network-device administrative authentication and command authorization are required.

Question 214

Which Aruba Central capability can help administrators identify devices that are not compliant with the desired software version?

1. Client Insights
2. Firmware compliance
3. Port mirroring
4. MAC learning

Correct Answer: 2

Explanation

Firmware compliance capabilities allow administrators to compare device software versions against the versions required by the organization’s management policy. This helps identify devices that are running older or otherwise noncompliant firmware. Maintaining appropriate firmware versions can help organizations manage supported features, security updates, and operational consistency. Client Insights focuses on client visibility, port mirroring copies network traffic for analysis, and MAC learning concerns Layer 2 forwarding. Therefore, firmware compliance is the appropriate capability for identifying devices that do not meet the desired software-version requirement.

Question 215

An administrator wants to create a secure API integration with Aruba Central while avoiding the use of a user’s interactive password for every API request. What should be used?

1. API access token
2. Telnet session
3. Console cable
4. SNMP trap

Correct Answer: 1

Explanation

An API access token can provide an application with a credential specifically intended for programmatic access to supported APIs. This allows automation tools and integrations to authenticate API requests without repeatedly using an interactive administrator password. Token permissions and lifecycle should be managed carefully according to the platform’s security model. Telnet provides interactive remote access and is not an API authentication mechanism. A console cable is a physical management method, while an SNMP trap is an event notification mechanism. Therefore, an API access token is appropriate for secure programmatic API integration.

Question 216

An administrator needs a network management solution that can automate configuration and manage Aruba network infrastructure from a centralized interface. Which solution is designed for network configuration automation and management?

1. ARP
2. DNS
3. DHCP
4. Aruba NetEdit

Correct Answer: 4

Explanation

Aruba NetEdit is designed to provide centralized network configuration management and automation capabilities for supported Aruba infrastructure. It can help administrators maintain configuration consistency, validate changes, and manage network devices through a centralized operational workflow. ARP resolves IPv4 addresses to MAC addresses, DNS provides name resolution, and DHCP provides host configuration. A centralized configuration management platform can be particularly useful in environments with multiple switches where manually maintaining identical settings would be difficult. Therefore, Aruba NetEdit is the appropriate solution for centralized network configuration automation and management.

Question 217

An administrator needs to protect a Layer 2 network from unauthorized DHCP servers responding to client requests. Which feature should be enabled?

1. Dynamic ARP Inspection
2. DHCP snooping
3. LACP
4. LLDP

Correct Answer: 2

Explanation

DHCP snooping helps protect a switched network against unauthorized DHCP servers. It allows the administrator to identify trusted interfaces where legitimate DHCP server responses are expected and treat other interfaces as untrusted. DHCP messages received from unauthorized sources can then be handled according to the configured protection behavior. Dynamic ARP Inspection addresses ARP-related attacks, LACP provides link aggregation, and LLDP provides neighbor discovery. Therefore, DHCP snooping is the appropriate feature when the primary concern is preventing unauthorized DHCP server responses.

Question 218

An administrator wants to verify that an Aruba switch has sufficient PoE resources available for additional access points. Which information should be checked?

1. DNS cache
2. OSPF neighbor table
3. PoE power budget
4. MAC address aging timer

Correct Answer: 3

Explanation

The PoE power budget represents the amount of electrical power available for powered devices connected to a switch. Before adding additional access points, administrators should verify that sufficient power remains within the switch’s available PoE capacity. The actual power requirements of connected devices should also be considered because different access points can require different power levels. DNS cache information concerns name resolution, the OSPF neighbor table concerns routing relationships, and MAC aging controls Layer 2 address-table entries. Therefore, checking the PoE power budget is the appropriate step before deploying additional powered devices.

Question 219

An administrator wants to maintain a secure management session to an Aruba switch over the network. Which protocol should be preferred over Telnet?

1. FTP
2. TFTP
3. SSH
4. SNMP

Correct Answer: 3

Explanation

SSH provides encrypted remote management sessions and is preferred over Telnet when secure administrative access is required. SSH encrypts the management communication between the administrator and the network device, helping protect credentials and administrative commands from interception. Telnet transmits management information without equivalent encryption and is therefore unsuitable for secure administrative access in modern networks. FTP and TFTP are primarily file-transfer protocols, while SNMP is mainly used for monitoring and management data exchange. Therefore, SSH is the appropriate protocol for secure remote command-line management.

Question 220

An administrator wants wireless clients to transition more efficiently between compatible access points while maintaining connectivity during movement. Which wireless capability can assist with faster roaming?

1. DHCP snooping
2. Port security
3. 802.11r
4. Storm control

Correct Answer: 3

Explanation

802.11r, also known as Fast BSS Transition, is designed to help compatible wireless clients perform faster transitions between access points within a wireless network. It can reduce the amount of time required for security-related procedures during a roam, which can be useful for latency-sensitive applications such as voice. Successful roaming also depends on client capabilities, WLAN configuration, authentication methods, and overall network design. DHCP snooping protects DHCP operations, port security controls switch-port access, and storm control limits excessive Layer 2 traffic. Therefore, 802.11r is the relevant wireless capability for faster roaming.