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Question 61

An Aruba administrator needs to identify the VLAN assigned to a wireless client after successful authentication. Which information should be reviewed?

1. Client details and role information
2. NTP synchronization status
3. DNS cache entries
4. SNMP community string

Correct Answer: 1

Explanation

Client details and role information can show how an authenticated wireless client has been classified and which network policies or VLAN assignment apply to that client. In Aruba environments, authentication results can influence role assignment and associated network access. NTP synchronization status provides time information, DNS cache entries relate to name resolution, and an SNMP community string is used for management communication. When troubleshooting a wireless user’s network placement, administrators should inspect the client’s authentication, role, and VLAN information. Therefore, client and role details are the most relevant information for determining the VLAN assigned after authentication.

Question 62

A network administrator wants to connect an Aruba switch to another switch and allow several VLANs to traverse the connection. Which configuration is required?

1. Access port
2. Trunk port
3. Loopback interface
4. Routed interface

Correct Answer: 2

Explanation

A trunk port allows multiple VLANs to traverse a single physical Ethernet connection. VLAN tagging is used to identify traffic belonging to each VLAN as it crosses the trunk. This configuration is commonly used between switches and other network devices that need connectivity to multiple VLANs. An access port normally carries traffic for one VLAN, while a routed interface provides Layer 3 connectivity rather than traditional VLAN trunking. A loopback interface is logical and is not used as a physical VLAN transport. Therefore, a trunk port should be configured for a switch-to-switch link carrying multiple VLANs.

Question 63

A wireless administrator notices that a client has a strong signal but poor throughput. Which factor should be investigated?

1. DHCP lease duration
2. DNS records
3. Channel utilization and interference
4. NTP server configuration

Correct Answer: 3

Explanation

A strong received signal does not always guarantee good wireless throughput. High channel utilization, neighboring access points, non-Wi-Fi interference, retransmissions, and congestion can significantly reduce available wireless airtime. Administrators should examine RF statistics and channel utilization to determine whether the client is competing with other transmissions. DHCP lease duration affects IP address assignment, DNS records affect name resolution, and NTP configuration affects system time. These services do not directly explain reduced wireless throughput caused by RF conditions. Therefore, channel utilization and interference should be investigated when signal strength is good but performance remains poor.

Question 64

An administrator wants to authenticate users against a centralized database before allowing access to an Aruba wireless network. Which protocol is commonly used?

1. RADIUS
2. NTP
3. SNMP
4. Syslog

Correct Answer: 1

Explanation

RADIUS is commonly used for centralized authentication and authorization in enterprise wireless environments. Aruba infrastructure can communicate with a RADIUS server when users authenticate through 802.1X-based wireless security. The RADIUS server validates the supplied credentials and can return authorization information that influences the user’s network access. NTP provides time synchronization, SNMP provides network monitoring, and Syslog transports event messages. Therefore, RADIUS is the appropriate protocol for integrating Aruba wireless access with a centralized authentication service. Proper server configuration and secure shared secrets are also important for successful communication.

Question 65

An Aruba administrator needs to provide a wireless network for visitors that requires users to authenticate through a web page before gaining normal network access. Which feature should be used?

1. WPA2-Personal
2. Trunking
3. Captive portal
4. SNMP

Correct Answer: 3

Explanation

A captive portal provides a web-based authentication or access-acceptance page for users connecting to a network. It is commonly used in guest wireless deployments where visitors must authenticate, accept terms, or provide temporary credentials before receiving normal network access. WPA2-Personal uses a shared pre-shared key and does not itself provide the same web-based guest experience. Trunking carries multiple VLANs, while SNMP is used for network monitoring. Therefore, a captive portal is the appropriate feature when guest users must interact with a web page before gaining network access.

Question 66

A network administrator wants to configure a wireless SSID so that users are placed into a specific VLAN after connecting. Which configuration should be used?

1. Map the SSID to the required VLAN
2. Change the NTP server
3. Configure an SNMP trap
4. Modify the DNS zone

Correct Answer: 1

Explanation

An SSID can be associated with a specific VLAN so that wireless clients connecting through that SSID are placed into the appropriate Layer 2 network. This is commonly used to separate corporate, guest, voice, IoT, or other wireless traffic types. Changing the NTP server affects time synchronization, SNMP traps provide monitoring notifications, and DNS zones provide name-resolution information. These settings do not determine the VLAN into which wireless client traffic is placed. Therefore, the administrator should configure the SSID-to-VLAN mapping required by the network design.

Question 67

Which protocol should an administrator use to securely access an Aruba network device through a remote command-line interface?

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

Correct Answer: 3

Explanation

SSH provides encrypted remote command-line access to network devices and protects authentication credentials and management traffic during transmission. It is preferred over Telnet because Telnet does not provide equivalent encryption for the management session. FTP and TFTP are file-transfer protocols and are not intended for secure interactive CLI administration. Administrators should also limit remote management access to trusted networks and apply appropriate authentication controls. Therefore, SSH is the correct protocol when secure remote command-line management of an Aruba network device is required.

Question 68

An administrator wants to automatically assign IP addresses to clients connecting to a wireless network. Which service should be configured?

1. DNS
2. DHCP
3. SNMP
4. RADIUS

Correct Answer: 2

Explanation

DHCP automatically assigns IP addresses and other network parameters to clients. A DHCP server can provide information such as subnet mask, default gateway, DNS server addresses, and lease duration. This makes network deployment easier because clients do not need to be manually configured. DNS resolves domain names, SNMP provides monitoring and management, and RADIUS is used for authentication and authorization. Therefore, DHCP is the correct service for automatically assigning IP addresses to wireless clients. The administrator should also verify that the correct DHCP scope is associated with the client’s VLAN.

Question 69

An Aruba administrator wants to monitor events generated by multiple network devices from a central server. Which technology should be configured?

1. RADIUS
2. Syslog
3. DHCP
4. ARP

Correct Answer: 2

Explanation

Syslog is commonly used to forward system and event messages from network devices to centralized logging servers. Centralized logging allows administrators to review events from multiple devices in one location and can support troubleshooting, operational monitoring, and security investigations. RADIUS is primarily used for authentication and authorization, DHCP provides IP configuration, and ARP resolves local IPv4 addresses to MAC addresses. Therefore, Syslog is the appropriate technology for centralized event collection. Administrators should configure suitable log levels and destinations according to their monitoring and storage requirements.

Question 70

A wireless administrator wants to determine whether a client is experiencing a weak wireless signal. Which value should be examined?

1. RSSI
2. DHCP scope
3. DNS TTL
4. Routing metric

Correct Answer: 1

Explanation

RSSI, or Received Signal Strength Indicator, provides an indication of the wireless signal level received by a client or access point. It is useful for evaluating coverage and identifying clients that may be too far from an access point or affected by attenuation. DHCP scope information determines available IP addresses, DNS TTL controls how long DNS information may be cached, and routing metrics influence Layer 3 path selection. These values do not directly measure wireless signal strength. Therefore, RSSI should be examined when troubleshooting a client that appears to have weak wireless coverage.

Question 71

An administrator needs to ensure that all Aruba switches use synchronized timestamps for event logging. Which service should be configured?

1. SNMP
2. Syslog
3. NTP
4. RADIUS

Correct Answer: 3

Explanation

NTP allows network devices to synchronize their system clocks with a common time source. Consistent timestamps are important when analyzing logs from multiple Aruba switches because administrators can accurately correlate events across devices. This is particularly useful during troubleshooting and security investigations. SNMP provides monitoring and management functions, Syslog transports log messages, and RADIUS provides centralized authentication and authorization. Therefore, NTP should be configured on Aruba switches when synchronized timestamps are required for accurate event logging and analysis.

Question 72

An administrator needs to allow a wireless client to authenticate using a username and password validated by a RADIUS server. Which security framework should be used?

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

Correct Answer: 4

Explanation

WPA2-Enterprise with 802.1X supports individual user authentication and can use a RADIUS server to validate usernames and passwords or other supported authentication credentials. This differs from WPA2-Personal, which relies on a shared pre-shared key. Open authentication does not provide enterprise user authentication, while MAC filtering identifies devices by their hardware addresses rather than providing a full user authentication framework. Therefore, WPA2-Enterprise with 802.1X is appropriate when wireless clients must authenticate using individual credentials through a RADIUS server.

Question 73

An Aruba administrator needs to apply different firewall policies to users depending on their assigned network role. Which capability should be used?

1. Role-based access control
2. Channel bonding
3. NTP
4. DHCP relay

Correct Answer: 1

Explanation

Role-based access control allows Aruba administrators to associate different security and network policies with different user or device roles. For example, employees, contractors, and guests can receive different firewall rules and access permissions based on their assigned roles. This provides granular policy enforcement after authentication. Channel bonding affects wireless radio operation, NTP synchronizes system time, and DHCP relay forwards DHCP requests between network segments. Therefore, role-based access control is the appropriate capability when different firewall policies need to be applied according to a user’s network role.

Question 74

A wireless administrator wants to encourage capable clients to associate with the 5 GHz radio rather than the 2.4 GHz radio. Which feature should be configured?

1. DHCP snooping
2. Band steering
3. Static routing
4. RADIUS accounting

Correct Answer: 2

Explanation

Band steering can encourage capable dual-band wireless clients to use a preferred frequency band. Administrators often use this feature to encourage suitable clients toward 5 GHz when the RF environment makes that beneficial. The 5 GHz band can provide additional channel options and may experience less congestion than 2.4 GHz in some environments. DHCP snooping provides DHCP security controls, static routing defines fixed Layer 3 paths, and RADIUS accounting records authentication activity. Therefore, band steering is the appropriate wireless feature for influencing capable clients toward the 5 GHz band.

Question 75

An administrator wants to determine whether a switch interface is receiving excessive packet errors. Which information should be reviewed?

1. DNS cache
2. NTP status
3. Interface error counters
4. RADIUS configuration

Correct Answer: 3

Explanation

Interface error counters provide information about packets that were received or transmitted with errors or were otherwise discarded. Reviewing these counters can help administrators identify physical-layer problems, faulty cabling, hardware issues, or other interface conditions. DNS cache information is related to name resolution, NTP status concerns time synchronization, and RADIUS configuration is associated with authentication. Therefore, interface error counters should be examined when investigating packet errors on a switch interface. Administrators can also compare counters over time to determine whether errors are increasing during the reported problem.

Question 76

An Aruba administrator needs to connect an end-user computer to a switch and place the computer into a single VLAN. Which port configuration should be used?

1. Trunk
2. Access
3. Routed
4. Loopback

Correct Answer: 2

Explanation

An access port is normally configured for a single VLAN and is commonly used to connect end-user devices such as computers and printers. The switch associates traffic arriving on the port with the configured access VLAN. A trunk port is intended to carry multiple VLANs, while a routed interface provides Layer 3 connectivity instead of traditional VLAN access. A loopback is a logical interface and is not used to connect a physical end-user device. Therefore, an access port is the appropriate configuration for connecting a computer that should belong to one VLAN.

Question 77

A network administrator wants to collect CPU utilization and interface statistics from Aruba devices using a monitoring platform. Which protocol should be used?

1. FTP
2. SMTP
3. SNMP
4. NTP

Correct Answer: 3

Explanation

SNMP allows network management platforms to collect operational information from network devices. Depending on the device and configuration, the monitoring platform can retrieve metrics such as CPU utilization, memory usage, interface counters, and device status. This information can be used to create monitoring dashboards and alerts. FTP is used for file transfers, SMTP is used for email transport, and NTP synchronizes system time. Therefore, SNMP is the appropriate protocol for collecting performance and interface statistics from Aruba network devices through a centralized monitoring platform.

Question 78

An administrator needs to isolate guest users from internal users while allowing both groups to use the same physical Aruba switching infrastructure. Which design should be implemented?

1. Use separate VLANs with appropriate access policies
2. Use the same VLAN for both groups
3. Disable VLAN tagging
4. Increase switch interface speed

Correct Answer: 1

Explanation

Separate VLANs provide logical Layer 2 segmentation between guest and internal users even when both groups share the same physical switching infrastructure. Appropriate firewall or access-control policies can then restrict communication between the VLANs while allowing guests to access approved external services. Using the same VLAN does not provide strong logical separation, disabling VLAN tagging can prevent proper VLAN transport across trunk links, and increasing interface speed does not provide security isolation. Therefore, separate VLANs combined with appropriate access policies are an effective design for isolating guest and internal users.

Question 79

A wireless administrator needs to investigate whether nearby wireless networks are causing interference. Which information is most useful?

1. DHCP lease records
2. RF environment and channel utilization data
3. DNS records
4. NTP synchronization data

Correct Answer: 2

Explanation

RF environment and channel utilization data can reveal the presence of neighboring wireless networks, high airtime usage, and potential interference sources. This information is valuable when diagnosing wireless performance problems because a client can have an acceptable signal while still experiencing poor throughput due to congestion or interference. DHCP lease records show IP address assignments, DNS records relate to name resolution, and NTP data concerns time synchronization. Therefore, RF information and channel utilization should be examined when investigating whether nearby wireless networks are affecting wireless performance.

Question 80

An administrator wants to verify basic network-layer reachability between an Aruba device and another IP endpoint. Which tool should be used first?

1. FTP
2. RADIUS
3. Ping
4. Syslog

Correct Answer: 3

Explanation

Ping is commonly used to test basic IP connectivity by sending ICMP echo requests to a destination and checking for responses. It can help determine whether the endpoint is reachable and can provide round-trip timing and packet-loss information. A successful ping does not guarantee that application services are functioning, but it provides a useful initial Layer 3 connectivity test. FTP is used for file transfers, RADIUS provides authentication services, and Syslog is used for event logging. Therefore, ping is an appropriate first troubleshooting tool for verifying basic network-layer reachability.