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Aruba Comware Advanced study materials
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Aruba Comware Advanced practice questions

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Question 1Comware System Architecture and Device Management

In Comware, which command displays the current software version and uptime of the device?

  1. display device
  2. display startup
  3. display version Correct answer.
  4. display current-configuration

Explanation

The display version command reports the Comware software version, hardware model, and system uptime. It is the standard first check when identifying the running release.

Question 2Comware System Architecture and Device Management

Which Comware command saves the running configuration to the startup configuration file?

  1. save Correct answer.
  2. write memory
  3. copy running-config startup-config
  4. backup configuration

Explanation

In Comware the save command writes the running configuration to the startup configuration file. You are prompted for a filename or can supply one directly.

Question 3Comware System Architecture and Device Management

What is the default behavior of the Comware CLI when a user with network-admin role logs in via console?

  1. They land in user view and must enter system view Correct answer.
  2. They are required to authenticate with a RADIUS server
  3. They are placed directly in interface view
  4. They are placed in a restricted diagnostic shell

Explanation

Comware always starts an authenticated session in user view. Administrative configuration requires entering system view with the system-view command.

Question 4Comware System Architecture and Device Management

Which file is loaded by default at startup to provide the initial device configuration on a Comware device?

  1. default.cfg
  2. running-config.cfg
  3. startup.cfg Correct answer.
  4. next-startup.mdb

Explanation

The startup configuration file, conventionally named startup.cfg, is loaded at boot to seed the running configuration. Its name is tracked by the startup file setting.

Question 5Comware System Architecture and Device Management

Which command shows which startup image and configuration file the device will use on the next reboot?

  1. display saved-configuration
  2. display version
  3. display startup Correct answer.
  4. display boot-loader

Explanation

display startup lists the current and next-startup image and configuration files. It confirms what will load after a reboot.

Question 6Comware System Architecture and Device Management

A network engineer wants to compare the running configuration against the saved startup configuration. Which pair of commands is most appropriate?

  1. display logbuffer and display trapbuffer
  2. display interface brief and display ip routing-table
  3. display version and display device
  4. display current-configuration and display saved-configuration Correct answer.

Explanation

display current-configuration shows the active config, and display saved-configuration shows the stored startup config. Comparing them reveals unsaved changes.

Question 7Comware System Architecture and Device Management

Which Comware feature provides role-based command authorization so different login users can be limited to specific command sets?

  1. MAC authentication
  2. Port isolation
  3. DHCP snooping
  4. AAA with RBAC user roles Correct answer.

Explanation

Comware RBAC assigns user roles to AAA users, and each role defines which commands are permitted. This controls what each authenticated user can execute.

Question 8Comware System Architecture and Device Management

Which command enters system view on a Comware device?

  1. system-view Correct answer.
  2. configure terminal
  3. enable
  4. config

Explanation

Comware uses system-view to move from user view into system view. The prompt changes from <name> to [name] to reflect the new view.

Question 9Comware System Architecture and Device Management

What does the Comware command display diagnostic-information produce?

  1. A live packet capture on all interfaces
  2. A single consolidated collection of diagnostic data for support Correct answer.
  3. The routing table for all VRFs
  4. A list of currently logged-in users

Explanation

display diagnostic-information gathers many diagnostic outputs into one report for troubleshooting or vendor support. It is commonly redirected to a file.

Question 10Comware System Architecture and Device Management

Which command displays the Comware system clock and time zone settings?

  1. display clock Correct answer.
  2. display time
  3. display calendar
  4. display ntp-service status

Explanation

display clock shows the current system time and configured time zone. Accurate time is important for log correlation.

Question 11Comware System Architecture and Device Management

An administrator needs to set the device clock manually to a specific date and time in system view. Which command accomplishes this?

  1. clock set
  2. clock datetime Correct answer.
  3. time set
  4. set clock

Explanation

The clock datetime command sets the system date and time in system view. It takes the form clock datetime HH:MM:SS YYYY/MM/DD.

Question 12Comware System Architecture and Device Management

Which protocol allows a Comware device to synchronize its clock with an external time source?

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

Explanation

NTP synchronizes device clocks to a reference time source over the network. Comware supports NTP client and server modes.

Question 13Comware System Architecture and Device Management

Which command displays the contents of the Comware log buffer that holds recent system messages?

  1. display info-center
  2. display logbuffer Correct answer.
  3. display syslog
  4. display trapbuffer

Explanation

display logbuffer shows messages stored in the log buffer, which captures system events at configured severity levels.

Question 14Comware System Architecture and Device Management

In the Comware information center, which destination stores messages for SNMP trap delivery?

  1. Console
  2. Log buffer
  3. Trap buffer Correct answer.
  4. Monitor terminal

Explanation

The trap buffer holds messages destined for SNMP trap transmission. The log buffer holds log messages, and console/monitor are output destinations.

Question 15Comware System Architecture and Device Management

Which command sends the current configuration to a TFTP server as a backup?

  1. tftp put
  2. save tftp
  3. copy running-config
  4. backup startup-configuration to Correct answer.

Explanation

backup startup-configuration to <server> <filename> uploads the startup configuration to a remote server for backup. It is a built-in Comware backup mechanism.

Question 16Comware System Architecture and Device Management

Which command restores a saved configuration file from a TFTP server onto a Comware device?

  1. restore startup-configuration from Correct answer.
  2. tftp get
  3. load configuration
  4. copy tftp running-config

Explanation

restore startup-configuration from <server> <filename> downloads a configuration file to become the startup configuration. A reboot or manual load then applies it.

Question 17Comware System Architecture and Device Management

What is the purpose of the Comware configuration archive feature?

  1. To encrypt all configuration files at rest
  2. To automatically save configuration snapshots on a schedule or trigger Correct answer.
  3. To mirror configuration to a peer device in real time
  4. To compress log files on flash

Explanation

Configuration archive periodically or on-demand saves snapshots of the running configuration. This provides rollback points and change history.

Question 18Comware System Architecture and Device Management

Which Comware command displays the software and hardware resource usage, including CPU utilization?

  1. display cpu-usage Correct answer.
  2. display memory
  3. display device manuinfo
  4. display environment

Explanation

display cpu-usage reports current and historical CPU utilization. It helps identify resource pressure during troubleshooting.

Question 19Comware System Architecture and Device Management

Which command shows the manufacturing serial number and vendor information of hardware components?

  1. display inventory
  2. display version
  3. display device manuinfo Correct answer.
  4. display device

Explanation

display device manuinfo reports manufacturer data such as serial numbers and vendor details for installed components.

Question 20Comware System Architecture and Device Management

An engineer reboots a Comware device and wants to boot from a different image on next startup without changing the current running image. Which command sets the next-startup image?

  1. startup image
  2. set boot image
  3. boot-loader file Correct answer.
  4. image load

Explanation

boot-loader file specifies the main or backup image used at the next reboot. The currently running image is unaffected until reboot.

Question 21Comware System Architecture and Device Management

Which AAA authentication method validates users against a local username and password database on the device?

  1. local Correct answer.
  2. scheme
  3. none
  4. radius

Explanation

The local authentication method checks credentials against the device's local user database. It is commonly used as a fallback when remote servers are unreachable.

Question 22Comware System Architecture and Device Management

Which command creates a local user named admin with password authentication in Comware?

  1. local-user admin password simple Admin123 Correct answer.
  2. aaa user admin password Admin123
  3. username admin password Admin123
  4. user admin secret Admin123

Explanation

local-user creates a local account, and password simple sets a plaintext-stored password. Service type and authorization attributes are then assigned to the user.

Question 23Comware System Architecture and Device Management

A Comware device must send log messages to a remote syslog server. Which information center command directs messages to that server?

  1. info-center enable
  2. info-center loghost Correct answer.
  3. info-center logbuffer
  4. info-center source

Explanation

info-center loghost specifies the remote syslog server address and optional port/VPN instance. Messages matching the configured source rules are then forwarded.

Question 24Comware System Architecture and Device Management

Which statement best describes the relationship between user view and system view in Comware?

  1. System view is only reachable over SSH
  2. Both views allow identical configuration changes
  3. User view permits display commands while system view permits configuration changes Correct answer.
  4. User view requires no authentication while system view does

Explanation

User view provides monitoring and display commands, while system view enables configuration modifications. Authentication occurs before either view is entered.

Question 25Comware System Architecture and Device Management

An engineer must ensure that after a device reload the previous running configuration is not lost. Which action guarantees this?

  1. Issue display startup
  2. Issue save and confirm the startup file Correct answer.
  3. Issue reboot without saving
  4. Issue display current-configuration

Explanation

Only saving the running configuration to the startup file preserves changes across a reboot. Display commands merely show state and do not persist changes.

Question 26Comware System Architecture and Device Management

In Comware, which storage medium typically holds the startup configuration file that the device reads during boot?

  1. The flash file system Correct answer.
  2. The NVRAM log buffer
  3. The SDRAM working memory
  4. The TFTP server

Explanation

Comware devices read their startup configuration from a file stored in flash memory (for example startup.cfg) during the boot process. Working memory holds the running configuration only while the device is powered on, and remote servers are only used if explicitly configured for backup or restore.

Question 27Comware System Architecture and Device Management

Which Comware command displays the current running configuration in sections that can be paged through?

  1. display startup
  2. display current-configuration Correct answer.
  3. display saved-configuration
  4. display this

Explanation

The display current-configuration command outputs the active running configuration of the device. display startup shows which files are used at the next boot, display saved-configuration shows the saved file contents, and display this shows only the current view context.

Question 28Comware System Architecture and Device Management

An administrator wants Comware to record every configuration change made in system view so that a history of modifications is retained on the device. Which feature should be enabled?

  1. Automatic configuration
  2. Information center logging
  3. Configuration archive Correct answer.
  4. Password recovery

Explanation

The configuration archive feature periodically or on demand saves copies of the running configuration to a designated location, providing a change history. Information center logging records system messages but does not preserve configuration snapshots, and the other options do not track configuration changes.

Question 29Comware System Architecture and Device Management

A Comware device is configured to use NTP, and the administrator wants to confirm which time source the device is currently synchronized to. Which command provides this information?

  1. display clock
  2. display version
  3. display ntp-service sessions Correct answer.
  4. display users

Explanation

The display ntp-service sessions command shows the NTP associations and indicates which server the device is synchronized with. display clock shows only the current time and time zone, not the source of synchronization.

Question 30Comware System Architecture and Device Management

An engineer notices that a Comware device boots with an older configuration than expected. Which file and command combination should be checked first to determine what the device will load at the next startup?

  1. The running configuration shown by display current-configuration
  2. The license file shown by display license
  3. The startup configuration file identified by display startup Correct answer.
  4. The log buffer shown by display logbuffer

Explanation

The display startup command identifies the configuration file and system image the device will use at the next boot, which explains why an older configuration is loaded. The running configuration reflects current state after boot and cannot explain the startup behavior.

Question 31Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

On a Comware switch, which command creates VLAN 20 and enters its view in a single step?

  1. vlan create 20
  2. interface vlan 20
  3. port vlan 20
  4. vlan 20 Correct answer.

Explanation

In Comware, the global command 'vlan 20' creates the VLAN if it does not exist and immediately enters VLAN view, where port membership can be assigned. There is no separate creation subcommand.

Question 32Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

Which port link type accepts untagged frames and places them into the port's configured PVID?

  1. Monitor
  2. Access Correct answer.
  3. Hybrid
  4. Trunk

Explanation

An access port carries a single VLAN, accepts only untagged traffic, and tags it internally with the port PVID. Trunk and hybrid ports can carry multiple VLANs.

Question 33Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

A hybrid port has VLAN 10 untagged and VLAN 20 tagged. Which statement describes its behavior?

  1. Frames for both VLANs leave tagged
  2. Frames for VLAN 10 leave untagged and VLAN 20 tagged Correct answer.
  3. Frames for VLAN 10 leave tagged and VLAN 20 untagged
  4. Frames for both VLANs leave untagged

Explanation

On a hybrid port each VLAN is individually marked tagged or untagged. Untagged VLANs are sent without a tag, while tagged VLANs retain their tag on egress.

Question 34Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

Which command assigns ports GigabitEthernet1/0/1 through 1/0/4 to VLAN 30 as access ports?

  1. port link-type access vlan 30
  2. switchport access vlan 30 (global)
  3. port access vlan 30 (issued in interface range view) Correct answer.
  4. vlan 30 port GigabitEthernet1/0/1 to 1/0/4

Explanation

After entering interface range view and setting the link type to access, 'port access vlan 30' places all selected ports into VLAN 30. Comware uses 'port access vlan' rather than the Cisco-style 'switchport' form.

Question 35Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

What is the purpose of the PVID on a Comware port?

  1. It sets the 802.1p priority of egress frames
  2. It defines the native VLAN used to classify untagged ingress frames Correct answer.
  3. It selects the spanning tree instance for the port
  4. It limits the maximum number of learned MAC addresses

Explanation

The port VLAN ID (PVID) determines which VLAN receives untagged frames arriving on the port. On access ports the PVID equals the access VLAN.

Question 36Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

Which VLAN type carries traffic for multiple customer VLANs across a provider network by adding an outer tag?

  1. Voice VLAN
  2. Isolate-user VLAN
  3. QinQ VLAN Correct answer.
  4. Super VLAN

Explanation

QinQ (802.1ad) stacks an outer service-provider tag on top of the customer tag, allowing transparent transport of many customer VLANs. Super VLAN and isolate-user VLAN serve different aggregation purposes.

Question 37Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

In a super VLAN configuration, what role do sub-VLANs play?

  1. They authenticate users via 802.1X
  2. They carry the Layer 3 gateway address
  3. They define the spanning tree root priority
  4. They provide the physical broadcast domains mapped to the super VLAN Correct answer.

Explanation

Sub-VLANs are the actual Layer 2 broadcast domains containing the physical ports, while the super VLAN provides a single Layer 3 interface for all of them. Sub-VLANs are isolated from each other at Layer 2.

Question 38Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

Which command creates a Layer 3 interface for VLAN 50 on a Comware switch?

  1. interface vlan 50
  2. interface loopback 50
  3. interface vlan-interface 50 Correct answer.
  4. vlan 50 ip address

Explanation

Comware names switched virtual interfaces 'Vlan-interface' followed by the VLAN ID. An IP address is then assigned within that interface view.

Question 39Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

Which command adds GigabitEthernet1/0/1 and 1/0/2 to link aggregation group 1 as static members?

  1. aggregation-group 1
  2. channel-group 1 mode active
  3. port-group 1 lacp
  4. link-aggregation group 1 mode static (in interface range view) Correct answer.

Explanation

On Comware, member ports join an aggregation group with 'link-aggregation group <id> mode static' (or 'mode lacp') issued in interface or interface range view.

Question 40Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

What distinguishes a dynamic LACP aggregation from a static aggregation on Comware?

  1. Dynamic groups negotiate membership with LACP PDUs, while static groups force membership Correct answer.
  2. Dynamic groups do not require matching port speeds
  3. Static groups cannot carry tagged VLAN traffic
  4. Only dynamic groups support more than two member ports

Explanation

A dynamic aggregation uses LACP to negotiate which links become active members, whereas a static aggregation treats configured ports as members without protocol negotiation. Both support multiple ports and tagged traffic.

Question 41Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

Which factor prevents a port from being selected as an active member of a link aggregation group?

  1. The port has a description configured
  2. The port carries the native VLAN untagged
  3. The port speed differs from the reference port Correct answer.
  4. The port is configured as a trunk

Explanation

LACP and static aggregation require member ports to have consistent attributes, including speed, duplex, and link type. A speed mismatch keeps the port out of the active set.

Question 42Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

Which load-sharing mode determines how traffic is distributed across the links of an aggregation group?

  1. qos trust dscp
  2. link-aggregation load-sharing mode Correct answer.
  3. stp instance load-balance
  4. lacp system-priority

Explanation

The 'link-aggregation load-sharing mode' command sets the hashing basis (for example source/destination MAC, IP, or port) used to distribute frames across member links.

Question 43Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

In LACP, which parameter is used to elect the actor with the higher priority for a given aggregation group?

  1. System priority Correct answer.
  2. Operational key
  3. Port priority
  4. Admin key

Explanation

LACP compares system priority first (lower value wins), then the system MAC address, to determine the controlling actor for the group. Port priority is used later to decide which specific ports become active.

Question 44Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

A two-switch LACP bundle has four member links but only two are active. What is the most likely cause?

  1. Spanning tree is disabled on the bundle
  2. LACP max active links is limited by the configured maximum number of Selected ports Correct answer.
  3. The member ports are using different VLANs
  4. The ports are configured as access ports

Explanation

LACP limits the number of Selected (active) links using the max-active setting; excess links remain in Standby. The other factors do not by themselves cap the active count.

Question 45Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

Which spanning tree protocol standard is defined by IEEE 802.1D and uses a single common topology for all VLANs?

  1. PVST
  2. STP Correct answer.
  3. RSTP
  4. MSTP

Explanation

Classic STP (802.1D) builds one spanning tree for the entire bridged network, independent of VLANs. RSTP and MSTP are later standards, and PVST is a vendor-specific per-VLAN variant.

Question 46Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

Which command enables spanning tree globally on a Comware switch?

  1. spanning-tree enable
  2. stp mode enable
  3. stp enable Correct answer.
  4. stp global on

Explanation

The global 'stp enable' command turns on spanning tree; the mode and per-port settings are configured separately with 'stp mode' and 'stp edged-port'.

Question 47Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

What is the default spanning tree mode on current Comware switches?

  1. MSTP Correct answer.
  2. PVST
  3. RSTP
  4. STP

Explanation

Comware defaults to MSTP, which is backward compatible with STP and RSTP and supports multiple instances. The mode can be changed with 'stp mode'.

Question 48Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

Which port role does RSTP introduce that classic STP lacks?

  1. Designated port
  2. Root port
  3. Blocked port
  4. Alternate port Correct answer.

Explanation

RSTP adds the Alternate and Backup port roles to represent pre-computed backups for the root and designated roles. Classic STP only defines root and designated roles, with other ports simply blocked.

Question 49Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

In MSTP, what is the purpose of the region configuration?

  1. It defines a group of switches sharing the same region name, revision, and VLAN-to-instance mapping Correct answer.
  2. It sets the bridge priority per instance
  3. It assigns edge ports to instances
  4. It configures the root guard timer

Explanation

An MST region is identified by matching region name, revision level, and VLAN-to-instance mapping across switches. Switches with mismatched parameters form separate regions and use the CIST to interconnect.

Question 50Advanced VLAN, Link Aggregation, and Spanning Tree Configuration

Which parameter is compared first when electing the root bridge in a spanning tree network?

  1. Port priority
  2. Bridge priority Correct answer.
  3. Path cost
  4. Bridge MAC address

Explanation

The root bridge is elected by lowest bridge priority; the bridge MAC address is used only as a tiebreaker when priorities are equal. Path cost and port priority affect downstream port role decisions.