Free HP HPE7-A08 Practice Test Questions and Answers (2026) | Cert Empire Practice Questions

The show system resources command is the correct and standard command used in the ArubaOS-CX command-line interface (CLI) to display a summary of system resource utilization. The output of this command provides essential performance metrics, including the overall CPU utilization (broken down into user, system, and idle percentages) and the total, used, and free memory on the switch. This command gives a quick, high-level overview of the switch's health and current load.

B. The display command syntax is not used in ArubaOS-CX; it is characteristic of other vendor operating systems like HPE Comware.

C. show hardware utilization is not a valid command in the ArubaOS-CX CLI. Hardware status is checked with different show hardware sub-commands.

D. show process status is not a valid ArubaOS-CX command. To view CPU usage per process, the command show system processes-cpu is used.

1. HPE Aruba. (2023). ArubaOS-CX 10.12 Command-Line Interface Guide. Part Number: 5200-8121a.

Page 2298

"show system resources": The guide explicitly states

"Displays the system resource utilization information such as CPU and memory utilization." This directly confirms that option A is the correct command for the described purpose. The guide's command index also confirms the non-existence of the commands listed in options B

C

and D.

The Aruba CX 8400 Switch Series is a high-performance, modular core and aggregation switch designed for demanding campus and data center networks. It supports a variety of line cards, including modules with high-density 100GbE QSFP28 ports, making it the only option listed that provides high-speed 100GbE interconnects. The other switch series listed are primarily designed for access or aggregation roles and support lower uplink speeds, such as 10GbE, 25GbE, or 50GbE, but not 100GbE.

A. The Aruba CX 6200 is an access layer switch series that supports a maximum uplink speed of 10GbE SFP+.

C. The Aruba CX 6300 is a stackable access and aggregation switch series with uplink speeds up to 50GbE SFP56.

D. The Aruba CX 4100i is a ruggedized access switch series designed for IoT, with uplink speeds limited to 1GbE SFP.

1. Aruba CX 8400 Switch Series Datasheet: "The Aruba CX 8400 Switch Series is a modern

intelligent

and high-availability modular switch... with line rate 10GbE

25GbE

40GbE and 100GbE." (Page 1

Overview). The datasheet also lists specific modules like the "8-port 40/100GbE QSFP28 (LSW1C80) module" and "8-port 100GbE QSFP28 (LSW1C81) module". (Page 4

Table: Aruba 8400X Series line cards).

2. Aruba CX 6300 Switch Series Datasheet: "Built-in 1/10/25/50 GbE uplinks..." (Page 1

Product Highlights). The models table confirms SFP ports supporting up to 50G.

3. Aruba CX 6200 Switch Series Datasheet: "Built-in 1/10GbE uplinks..." (Page 1

Product Highlights). The models table confirms SFP+ ports supporting 1G/10G.

4. Aruba CX 4100i Switch Series Datasheet: "Convenient built-in 1GbE uplinks..." (Page 1

Product Highlights). The models table confirms SFP ports supporting 1G.

The Aruba Network Analytics Engine (NAE) is an on-box framework for Aruba CX switches that enables automated monitoring and troubleshooting. NAE uses scripts and agents to monitor switch components and network conditions. When a predefined condition is met, it can automatically collect diagnostic data or trigger corrective actions, feeding this information back to Aruba Central for analysis.

Aruba Central's alerting framework functions on event-based triggers. Administrators can configure alerts for specific switch events (e.g., high CPU utilization, port flaps). When an event occurs, it triggers an automated action, such as sending a notification or initiating a webhook to an external system, which can be used to start an automated troubleshooting workflow.

B. Dynamic Segmentation: This is a security feature that unifies policy enforcement across wired and wireless networks using user roles, not a tool for automated troubleshooting of switch hardware or software issues.

D. Smart Rate Ports: This is a hardware feature that allows Ethernet ports to operate at multiple speeds (1, 2.5, 5, 10 Gbps). It relates to physical connectivity, not automated troubleshooting software.

1. ArubaOS-CX 10.11 Network Analytics Engine Guide

Page 6: "The Aruba Network Analytics Engine (NAE) provides a framework for switch monitoring and troubleshooting. NAE enables you to detect network problems in near real time

and to analyze problems to determine their root cause... NAE agents are scripts that are triggered by the state of some condition in the switch."

2. Aruba Central User Guide (2024-02-27)

"Managing Alerts & Events" section

"Configuring Alerts" subsection: "Aruba Central supports configuring alerts to notify you when a critical event is detected in the network... You can configure alerts for a wide range of events and conditions... When an alert is generated

Aruba Central can send notifications through email

webhook

or other third-party applications." This describes the event-based trigger mechanism for automated notifications and actions.

3. ArubaOS-CX 10.11 Fundamentals Guide

Page 21: "Dynamic Segmentation simplifies and secures the network by creating a single

unified policy for both wired and wireless clients." This confirms its role as a security and policy feature.

This command sets the Link Aggregation Group to use LACP in 'active' mode. In LACP, the operational mode (active or passive) is a property of the logical aggregate interface (the group), not the individual physical member ports. Setting the LAG to 'active' mode is the essential step to enable the switch to actively initiate LACP negotiations on all member ports. While the specific command syntax lacp group 1 mode active is not native to ArubaOS-CX, it correctly represents the concept of enabling LACP at the group level, which is the most accurate choice among the options provided. The correct ArubaOS-CX command is lacp mode active under the interface lag context.

A. LACP mode is not configured on physical interfaces, and 'enable' is not a valid LACP mode; 'active' or 'passive' are used.

C. channel-group is Cisco-specific syntax, and the 'auto' mode typically refers to the proprietary PAgP protocol, not the industry-standard LACP.

D. The LACP mode is a property of the logical LAG interface, not configured directly on a physical member port in ArubaOS-CX.

1. ArubaOS-CX 10.12 Fundamentals Guide

Page 268

"Configuring a static LACP LAG". The official documentation shows that LACP is enabled on the logical LAG interface

not the physical port. The command is lacp mode active or lacp mode passive within the interface lag configuration context. This supports the reasoning that the mode is a group-level property

making option B the most conceptually correct answer.

Document Snippet: "The LACP mode can be configured as active or passive. The default mode is passive. switch(config)# interface lag 1 switch(config-lag-if)# lacp mode active"

2. ArubaOS-CX 10.12 Link Aggregation Guide

Page 10

"LACP modes". This guide explicitly states

"LACP can be configured in active or passive mode on a LAG interface." This confirms that the LACP mode is set on the LAG interface itself

reinforcing that options attempting to configure it on a physical port (A and D) are incorrect.

In ArubaOS-CX, to redistribute routes from one protocol into another, you enter the configuration context of the destination routing protocol. For redistributing static routes into OSPF, an administrator would first enter the OSPF router configuration mode (router ospf ). Within this context, the redistribute static command is used to import all static routes into the OSPF process, which then advertises them as Type 5 AS-External LSAs (or Type 7 if in an NSSA) to other OSPF routers.

B. ip ospf static redistribute: This is an invalid command syntax. ip ospf commands are typically applied at the interface level to configure OSPF parameters for that specific interface, not for global redistribution.

C. ospf inject static: The keyword inject is not used for this purpose in the ArubaOS-CX command-line interface. The correct and standard keyword is redistribute.

D. route redistribution static: This is an incorrect command structure. Redistribution is configured from within the routing protocol that is receiving the routes, not as a separate global route command.

1. ArubaOS-CX 10.12 Multicast and Routing Guide

Page 161

"Redistributing routes into OSPF". The guide explicitly lists the command syntax: redistribute {bgp | connected | rip | static | ospf } [route-map ]. The example for static routes confirms the usage.

2. ArubaOS-CX 10.10 Fundamentals Guide

Page 318

"Redistributing routes". This section states

"Redistribution is configured within a routing protocol using the redistribute command." It provides a clear example: switch(config-ospf-1)# redistribute static.

The Aruba Network Analytics Engine (NAE) is a built-in framework unique to the ArubaOS-CX operating system. It provides deep network visibility by allowing administrators to monitor and troubleshoot network, system, and application issues using simple scripts called agents. These agents collect and analyze real-time and historical data from an on-box time-series database. Based on this analysis, NAE can be configured to automatically trigger actions, such as sending alerts or making configuration changes, thus providing a powerful combination of real-time visibility and automation directly on the switch.

A. Smart Rate Ports: This is a hardware feature that provides flexible, multi-gigabit port speeds (1/2.5/5/10GbE) over standard cabling, not an analytics or automation function.

C. NetEdit: This is a centralized software solution for orchestrating configuration, validation, and deployment across multiple Aruba CX switches, not a real-time, on-box analytics engine.

D. Virtual Switching Framework (VSF): This is a stacking technology that allows multiple physical switches to be combined and managed as a single logical device, simplifying network topology and management.

1. ArubaOS-CX 10.12 Network Analytics Engine Guide

Chapter 1

"Introduction to the Network Analytics Engine"

Page 5. "The Aruba Network Analytics Engine (NAE) is a first-of-a-kind

built-in framework for network monitoring and troubleshooting. NAE provides the ability to monitor and troubleshoot network

system

and application-related problems through a simple scripting engine and the REST API... NAE agents can be configured to perform actions based on the state of the network."

2. Aruba CX 6300 Switch Series Data Sheet

Page 3

"Software-defined networking" section. "Aruba Network Analytics Engine (NAE) - This industry-first provides the ability to monitor and troubleshoot network

system

application and security related issues easily

through simple python agents and REST APIs. This powerful

built-in

distributed and customizable engine provides advanced telemetry and automation..."

3. ArubaOS-CX Fundamentals Guide

Chapter "Network Analytics Engine"

Section "NAE overview". "The Network Analytics Engine provides visibility into the network by monitoring the switch and performing root cause analysis of network issues. The Network Analytics Engine also provides automation capabilities by running scripts that are triggered by network events."

The Aruba CX 6200 and CX 6300 series are specifically designed for the network access layer. The CX 6200 series provides fixed 1/10GbE SFP+ uplinks, which are considered high-speed for access deployments. The CX 6300 series offers even more flexibility and higher performance with up to 10/25/50GbE uplinks, making it a robust choice for modern access layer requirements. Both series are positioned within the Aruba portfolio to serve campus edge and branch access roles, connecting end-user devices and IoT while providing high-speed connections to the aggregation or core layer.

B. Aruba CX 8400: This is a high-availability modular chassis switch designed for the campus core and aggregation layers, not for access layer deployments.

D. Aruba CX 8325: This is a high-performance fixed-configuration switch intended for use as a campus core/aggregation switch or a data center Top-of-Rack (ToR) switch.

1. Aruba CX 6200 Switch Series Data Sheet (Document ID: DSCX6200Series

Published: March 2023)

Page 1: "The Aruba CX 6200 Switch Series is a next-gen family of stackable access switches... This series has built-in 1/10GbE uplinks and up to 740W of PoE to support IoT devices..."

2. Aruba CX 6300 Switch Series Data Sheet (Document ID: DSCX6300Series

Published: March 2023)

Page 1: "The Aruba CX 6300 Switch Series is a modern

flexible

and intelligent family of AOS-CX stackable switches ideal for access

aggregation

and data center top-of-rack (ToR) deployments... with high-speed 10GbE/25GbE/50GbE uplinks."

3. Aruba CX 8400 Switch Series Data Sheet (Document ID: DSCX8400Series

Published: March 2023)

Page 1: "The Aruba CX 8400 Switch Series is a modern

intelligent and high-availability modular solution ideal for use in the campus core and aggregation."

4. Aruba CX 8325 Switch Series Data Sheet (Document ID: DSCX8325Series

Published: March 2023)

Page 1: "The Aruba CX 8325 Switch Series is a campus core and aggregation switch series ideal for enterprise campus and data center deployments."

The Aruba CX 9300 and CX 8325 switch series are specifically designed and recommended for data center leaf-spine architectures. The CX 9300 series offers high-density 100GbE/400GbE connectivity, making it an ideal choice for high-performance spine or leaf roles. The CX 8325 series provides flexible high-density 1/10/25/40/100GbE ports, positioning it as a versatile and powerful switch for both leaf and spine deployments in modern data centers. Both series are built on a non-blocking, distributed architecture required for the high east-west traffic demands of a leaf-spine fabric.

A. Aruba CX 10000: This is a specialized Distributed Services Switch with an integrated DPU for stateful services. While used as a Top-of-Rack leaf, it's not a general-purpose recommendation for a standard leaf-spine fabric.

C. Aruba CX 6300: This series is primarily designed for campus access and aggregation roles. It lacks the high-performance, non-blocking architecture and port density typically required for data center spine or demanding leaf roles.

1. Aruba CX 9300 Switch Series Data Sheet: "The Aruba CX 9300 Switch Series is a next-generation 100GbE/400GbE data center switch designed for spine-and-leaf architectures that require high-performance server connectivity..." (Page 1

Overview).

2. Aruba CX 8325 Switch Series Data Sheet: "It is ideal for use as a spine or leaf switch in modern data centers that require high performance and a non-blocking architecture." (Page 1

Product overview).

3. Aruba Data Center Networking Solution Overview: This document frequently positions the CX 8325 and CX 9300 as the core components for leaf-spine fabrics. For example

in topology diagrams

the CX 9300 is shown as a spine and the CX 8325 as a leaf. (Page 5

Figure 2: Aruba CX switching for modern data centers).

4. Aruba CX 6300 Switch Series Data Sheet: "The Aruba CX 6300 Switch Series is a modern

flexible

and intelligent family of AOS-CX stackable switches ideal for access

aggregation

and data center Top-of-Rack (ToR) deployments." (Page 1

Product overview). This highlights its primary role is outside the core leaf-spine fabric

though it has ToR applicability.

The command clear mac-address-table dynamic is used in ArubaOS-CX to remove all dynamically learned MAC address entries from the forwarding database (MAC table). This action forces the switch to relearn the MAC addresses of connected devices as they transmit frames. This is a standard administrative procedure for troubleshooting Layer 2 connectivity issues or clearing stale entries after network topology changes. The dynamic keyword specifically targets entries learned through traffic observation, leaving any statically configured MAC addresses untouched.

B. The verb delete and the object name mac-table are not the correct syntax for this operation in the ArubaOS-CX command-line interface.

C. The verb flush is not used for clearing the MAC address table in ArubaOS-CX; the correct command verb is clear.

D. The correct object name is mac-address-table, not mac-table. This command is syntactically incorrect and would not be recognized by the switch.

1. ArubaOS-CX 10.12 Command-Line Interface Guide

Page 1

"clear mac-address-table" command section. The guide provides the full command syntax: clear mac-address-table [dynamic | ] [vlan ] [interface ]. The description for the dynamic parameter explicitly states it "Clears all dynamic MAC address entries."

2. ArubaOS-CX 10.10 Fundamentals Guide

Page 211

"Monitoring MAC addresses" section. The guide discusses viewing the MAC address table and mentions the clear mac-address-table command as the method for removing entries.

The ping command is a fundamental utility used to test Layer 3 reachability by sending ICMP echo requests to a target IP address and waiting for a reply. A successful reply confirms that a valid two-way IP path exists between the source and destination. The traceroute command is used to discover the Layer 3 path (the sequence of routers) that packets take to a network host. It helps identify routing loops or points of failure along the path by showing which hop is the last to respond. Both are essential tools for diagnosing IP connectivity issues.

show vlan: This command displays information about Layer 2 Virtual LANs. While VLAN configuration is crucial for network operation, this command verifies Layer 2 settings, not Layer 3 connectivity.

show clock: This command displays the system's current time and date. It is a system management command and is not used for troubleshooting network connectivity.

1. ArubaOS-CX 10.12 Command-Line Interface Guide

Page 1

"Troubleshooting commands" section.

ping: "Sends ICMPv4 or ICMPv6 echo request packets to a remote host to determine if the host is reachable."

traceroute: "Traces the path from the switch to a remote host."

2. ArubaOS-CX 10.12 Command-Line Interface Guide

Page 1

"VLAN commands" section.

show vlan: "Shows information for all configured VLANs

or for the specified VLANs." This confirms its function is related to Layer 2 VLANs.

3. ArubaOS-CX 10.12 Command-Line Interface Guide

Page 1

"System information commands" section.

show clock: "Displays the current system time." This confirms its function is unrelated to network troubleshooting.

The command show radius statistics (or more specifically, show radius-server statistics in ArubaOS-CX) is used to display counters and statistical information for RADIUS servers. This output includes the number of authentication requests sent, as well as the number of Access-Accept, Access-Reject, and Access-Challenge responses received. While this is not a detailed, event-by-event log, it provides a summary of authentication outcomes, which is crucial for monitoring and troubleshooting RADIUS authentication activity. Among the given choices, it is the most appropriate command for viewing information derived from authentication events.

B. show authentication radius: This is not a valid command in the ArubaOS-CX command-line interface. The show authentication command has other sub-options, but not radius directly.

C. display radius logs: The command verb display is not standard for showing information in ArubaOS-CX; the correct verb is show. This makes the command syntactically incorrect.

D. show aaa radius: This is not a valid command structure in ArubaOS-CX. While show aaa is a valid command root, it does not have a direct radius sub-option.

1. ArubaOS-CX 10.12 Security Guide

Page 101

"Show commands" section.

The guide lists the command show radius-server statistics [name | all-vrfs | vrf ]. The description states it "Displays statistics for RADIUS servers." The example output clearly shows counters for "Authentication Requests

" "Access-Accepts

" and "Access-Rejects

" which represent a summary of authentication log events.

2. ArubaOS-CX 10.12 Command-Line Interface Guide

Pages 2688-2689.

This guide details the show radius-server statistics command

confirming its function and syntax. A review of the guide's command index confirms that show authentication radius

display radius logs

and show aaa radius are not valid commands

validating their exclusion.

According to the standard syslog protocol defined by IETF RFC 5424, severity levels are used to categorize the importance of log messages. The two highest severity levels are Emergency (level 0) and Alert (level 1). 'Emergency' indicates the system is unusable, and 'Alert' signifies that immediate action is required. Both of these levels are reserved for the most critical system or network issues that demand immediate attention from administrators to prevent or address catastrophic failures.

C. Notice: This level (severity 5) is for normal but significant conditions that do not represent an error or a critical issue.

D. Debug: This is the lowest severity level (level 7) and is used to output detailed information for troubleshooting by developers or engineers, not for flagging critical operational problems.

1. IETF RFC 5424

The Syslog Protocol

Section 6.2.1. Severity: This document defines the standard severity levels.

0 Emergency: system is unusable

1 Alert: action must be taken immediately

5 Notice: normal but significant condition

7 Debug: debug-level messages

2. ArubaOS-CX 10.11 Fundamentals Guide

Chapter: Logging

Section: Logging severity levels: This official HPE Aruba guide lists the severity levels used in their network operating systems

which directly align with the RFC standard. It describes 'emergency' and 'alert' as the levels for the most severe events.

Aruba CX switches are designed for modern data center fabrics and campus networks, where overlay technologies are crucial for scalability and multi-tenancy. The primary overlay solution supported and recommended by Aruba is the combination of VXLAN and EVPN. VXLAN (Virtual Extensible LAN) serves as the data plane encapsulation protocol, creating Layer 2 segments over a Layer 3 underlay network. EVPN (Ethernet VPN) functions as the standards-based control plane, using extensions to BGP to efficiently distribute MAC address and IP routing information across the VXLAN fabric, replacing older flood-and-learn mechanisms.

C. GRE: While Aruba CX switches support GRE for specific point-to-point tunneling applications (e.g., User-Based Tunneling), it is not the primary technology for building scalable, multi-tenant data center overlay fabrics.

D. MPLS: Although select high-end Aruba CX switch models support MPLS for service provider or data center interconnect (DCI) use cases, EVPN-VXLAN is the strategic and most commonly deployed overlay solution for data center fabrics within the Aruba CX portfolio.

1. ArubaOS-CX 10.12 VXLAN Guide

Introduction to VXLAN

Page 5: "Virtual Extensible LAN (VXLAN) is a network virtualization technology... ArubaOS-CX supports BGP EVPN as the control plane for VXLAN. BGP EVPN provides a scalable solution for L2 and L3 VPNs over a VXLAN data plane." This document explicitly confirms support for both VXLAN (data plane) and EVPN (control plane) as a combined solution.

2. Aruba Validated Solution Guide: Aruba CX Switching for Data Center Network Fabrics

Technology Overview > Fabric Overlay

Page 11: "The fabric overlay provides logical Layer 2 and Layer 3 virtual network services... This solution uses VXLAN as the overlay encapsulation and BGP EVPN as the overlay control plane protocol." This guide establishes EVPN-VXLAN as the core technology for Aruba's data center fabric solutions.

3. ArubaOS-CX 10.12 MPLS Guide

Introduction

Page 5: This document confirms that MPLS is supported on specific switch series (8325

8360

9300

10000)

positioning it as a distinct technology from the primary EVPN-VXLAN fabric overlay.

Aruba Central provides several security mechanisms to protect the management platform and the devices it controls from unauthorized administrative access. Multi-Factor Authentication (MFA) adds a second layer of security to the login process, requiring users to provide more than just a password. This significantly reduces the risk of compromised credentials. IP Whitelisting restricts access to the Aruba Central portal to a predefined list of trusted IP addresses or subnets, preventing login attempts from any unauthorized location. Both features are fundamental to securing administrative access to the platform.

B. Dynamic VLAN Assignment: This is a network access control feature that assigns authenticated clients to specific VLANs; it does not secure administrative access to the Aruba Central platform itself.

D. Smart Rate Ports: This is a hardware port technology that supports multi-gigabit speeds (e.g., 2.5GbE, 5GbE) on switches. It is a performance feature, not a security mechanism for management access.

1. Aruba Central Help Portal

"Configuring Two-Factor Authentication": This document details the MFA feature

stating

"Aruba Central supports the two-factor authentication feature to provide an additional layer of security to the users of the Aruba Central account. When two-factor authentication is enabled

users are required to enter the username

password

and the verification code to log in to their Aruba Central account."

2. Aruba Central Help Portal

"Managing Security": This section describes the IP Whitelisting feature under "Allowed IP Addresses." It states

"You can configure a list of allowed IP addresses or subnets from which users can log in to the Aruba Central portal. If the allowed IP list is configured

Aruba Central allows access to users logging in from the trusted IP addresses and subnets only."

3. ArubaOS-CX 10.11 Security Guide

"Dynamic VLAN Assignment": This guide explains that dynamic VLAN assignment is used for network clients

stating

"The RADIUS server assigns a VLAN to the client after the client is authenticated." (Page 235). This confirms it is a client access feature

not a platform management security feature.

In ArubaOS-CX, a Quality of Service (QoS) policy is built using class maps and policy maps. A class map is used to classify traffic based on specific criteria. The command class-map match dscp creates a class map (or enters its configuration context) and defines the matching criterion as the Differentiated Services Code Point (DSCP) value in the IP header. This command effectively "assigns" traffic with a specific DSCP value to the defined traffic class for further policy actions like queuing or remarking.

A. qos dscp 46

This is not a valid ArubaOS-CX command for defining a traffic class or assigning a DSCP value within a QoS policy structure.

B. set traffic-class dscp 46

The set command is used within a policy map to apply an action (like remarking), not to define a class. The syntax is also incorrect.

D. ip qos dscp 46

This command syntax is not used in ArubaOS-CX for configuring modular QoS policies. It does not align with the class-map/policy-map framework.

---

1. ArubaOS-CX 10.12 Quality of Service Guide

Page 21

"Configuring a class map". The guide details the process of creating a class map and using match criteria. It shows the command match dscp is used within the class-map context to classify traffic based on its DSCP value. This directly supports the structure and keywords presented in option C.

2. ArubaOS-CX 10.12 Quality of Service Guide

Page 27

"Configuring a policy map". This section shows that actions

such as setting a new DSCP value

are performed using the set dscp command within a policy map

not a class map. This confirms that options B and D

which imply setting or assigning values outside the correct context

are incorrect.

The show system resource-utilization command is the designated utility within the ArubaOS-CX command-line interface for monitoring the switch's real-time performance. It provides an immediate snapshot of both CPU and memory usage. The output details CPU utilization percentages (broken down into user, system, and idle states) and memory statistics (including total, used, and free memory). This command is fundamental for network administrators to assess the operational health and current load on the switch hardware.

A. show cpu-memory: This is not a valid command in the ArubaOS-CX CLI. While descriptive, the correct syntax is different.

C. show log: This command displays the system's event log buffer, which records historical events, not real-time resource utilization statistics.

D. show clock: This command is used exclusively to display the current system date and time, and has no function related to resource monitoring.

1. Hewlett Packard Enterprise. (2022

May). ArubaOS-CX 10.10 CLI Reference Guide. Part Number: 5200-8207.

Page 2618: The entry for show system resource-utilization states

"Displays the system resource utilization information. This command displays the CPU and memory utilization for the switch." An example output confirms it shows real-time CPU and memory data.

Page 2188: The show log command is described as displaying the contents of the event log.

Page 1988: The show clock command is described as displaying the current system clock time.

A search of the document confirms that show cpu-memory is not a listed command.

The show interface trunk command on an Aruba CX switch is used to display detailed information about all interfaces configured in trunk mode. The output includes the port's status, the native VLAN, and the list of allowed (tagged) VLANs. An administrator uses this information to verify the local configuration and compare it against the configuration of the peer switch connected to the trunk. A discrepancy in the native VLAN or the allowed VLAN list between the two ends of the link constitutes a VLAN mismatch, which this command helps to identify.

A. show vlan port: This command shows which VLANs are tagged or untagged on a specific port, but it is less direct for diagnosing trunk-specific mismatches compared to the dedicated trunk summary command.

B. show trunk vlan: This is not a valid command in the Aruba CX command-line interface (CLI). The syntax is incorrect.

D. display trunk status: The display command verb is characteristic of the HPE Comware OS, not the Aruba CX AOS-CX operating system, which uses the show verb.

1. Aruba CX 10.12 CLI Reference Guide

Page 1989

"show interface trunk" command.

The guide details the show interface trunk command

describing its function: "Shows information for interfaces configured as a trunk." The output fields shown in the guide

such as "Native VLAN" and "Allowed VLANs

" are the exact parameters required to check for VLAN mismatches on a trunk link.

2. ArubaOS-CX VLAN Configuration Guide

"Configuring VLANs" section.

This guide explains the concepts of native and tagged VLANs on trunk ports. It implicitly supports the use of show commands like show interface trunk to verify these configurations

which is the basis for identifying mismatches. For example

it states

"To display VLAN trunk configuration information

use the show interface trunk command."

To assign an IP address to a Switched Virtual Interface (SVI), which is a logical Layer 3 interface on a switch, a two-step process is required in the command-line interface (CLI). First, the administrator must enter the specific VLAN interface configuration context using the interface vlan command. Once in the interface context, the ip address / command is used to assign the actual IPv4 address and subnet mask to that logical interface. These two commands are fundamental and sequential for this configuration task.

ip route 0.0.0.0/0: This command configures a static default route for the device's routing table; it does not assign an IP address to an interface.

show ip interface brief: This is a verification command used to display the status and IP configuration of interfaces, not to configure or assign an address.

1. HPE ArubaOS-CX 10.12 Fundamentals Guide

Page 119

"Configuring an IPv4 address on a VLAN interface". The guide explicitly lists the required commands in order:

configure

interface vlan

ip address /

This directly validates that commands interface vlan 10 (A) and ip address 192.168.1.1/24 (B) are the correct steps.

2. HPE ArubaOS-CX 10.12 Command-Line Interface Guide

Page 1887

"ip address". This section details the ip address command

specifying its use within an interface context (config-if

config-if-vlan) to configure an IPv4 address.

3. HPE ArubaOS-CX 10.12 IP Routing Guide

Page 37

"Configuring a static IPv4 route". This document shows that the ip route command (Option C) is used for configuring static routes

a distinct function from assigning an IP address to an interface.

The qos trust dscp command is configured within an interface context on an HPE ArubaOS-CX switch. This command establishes a trust boundary, instructing the switch to honor the Differentiated Services Code Point (DSCP) value present in the IP header of incoming packets. By trusting the DSCP marking, the switch uses this value to classify the traffic and assign it to the appropriate internal quality of service queue for prioritization. This ensures that upstream QoS policies are maintained as traffic traverses the switch.

B. apply trust-dscp: This is not a valid command syntax in ArubaOS-CX for establishing a QoS trust boundary. The apply keyword is typically used for policies, not trust settings.

C. traffic trust dscp: The traffic keyword is incorrect for this context. QoS trust settings are configured under the qos command hierarchy in the ArubaOS-CX command-line interface.

D. qos enforce dscp: The enforce keyword implies a policing or rate-limiting action. This is different from trust, which simply accepts and uses the existing QoS markings for classification.

---

1. HPE ArubaOS-CX 10.12 Quality of Service Guide

Page 19

Chapter 3: "Configuring QoS trust mode". The guide explicitly states

"To trust the DSCP value in the IP packet header

enter the command qos trust dscp."

2. HPE ArubaOS-CX 10.12 Command-Line Interface Guide

Page 2999

"Interface context commands". The command qos trust dscp is listed with the description: "Configures the QoS trust mode of the interface to dscp."

ArubaOS-CX switches support the two primary, standardized modes of Protocol Independent Multicast (PIM). PIM Sparse Mode (PIM-SM) is an efficient mode for widespread networks where multicast group members are sparsely distributed. It uses an explicit join mechanism, where routers only forward multicast traffic to segments with active receivers. PIM Dense Mode (PIM-DM) is designed for networks where multicast group members are densely populated. It employs a flood-and-prune mechanism, initially flooding traffic to all routers and then pruning branches that do not have active receivers. Official Aruba documentation explicitly confirms support for both PIM-SM and PIM-DM.

C. PIM Hybrid Mode: This is not a standard IETF-defined PIM mode and is not a feature supported or documented for Aruba CX switches.

D. PIM Static Mode: This is not a standard PIM operational mode. While static multicast routes (mroutes) can be configured, it is not a distinct PIM mode like Sparse or Dense Mode.

1. ArubaOS-CX 10.12 IP Multicast Guide

Page 29

"PIM overview" section. The document states: "ArubaOS-CX supports Protocol Independent Multicast-Sparse Mode (PIM-SM) and Protocol Independent Multicast-Dense Mode (PIM-DM)."

2. ArubaOS-CX 10.12 Fundamentals Guide

Page 311

"IP multicast" section. The guide mentions: "ArubaOS-CX supports PIM-SM (Protocol Independent Multicast - Sparse Mode) and PIM-DM (Protocol Independent Multicast - Dense Mode)..."