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HP HPE7-A08 Exam Syllabus Topics:
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NEW QUESTION # 139
You are planning a 1 Gbps link between two CX switches. Which type of SFP port will be required?
- A. SFP28
- B. QSFP+
- C. SFP
- D. SFP+
Answer: C
NEW QUESTION # 140
Which steps should be followed to configure Layer 2 VLANs on Aruba switches? (Select two.)
- A. Create a VLAN and assign it a name
- B. Enable DHCP relay
- C. Enable LLDP globally
- D. Assign VLAN ID to the switch interface
Answer: A,D
NEW QUESTION # 141
You have recommended that a customer adopt a modem management approach for their new CX switches. Which of these would this include? (Choose two.)
- A. NAE
- B. SNMP
- C. YAML
- D. REST API
- E. XML
Answer: B,D
Explanation:
SNMP provides standardized, programmatic monitoring and control of switch state, which is a core element of modern device management.
The REST API enables automated, script-driven configuration and operational management, supporting modern model-driven workflows for CX switches.
NEW QUESTION # 142
Which actions should be taken before deploying a configuration change to Aruba switches?
(Select two.)
Response:
- A. Apply changes directly to all switches simultaneously
- B. Disable all redundant links before applying changes
- C. Verify the configuration in a test environment
- D. Perform a rollback plan test
Answer: C,D
NEW QUESTION # 143
Which CLI command displays all currently active ARP entries on an Aruba CX switch?
- A. show interfaces arp
- B. display arp
- C. show arp table
- D. show ip arp
Answer: D
Explanation:
The show ip arp command lists MAC-to-IP mappings, helping identify ARP resolution failures affecting network communication.
NEW QUESTION # 144
A customer with a gateway connected to a device on gigabitethernet 0/0/3 configures an Asset ID TLV on the device for inventory management.
Refer to the exhibit.
The customer mentions the Asset ID is not shown. What is causing the issue?
- A. MTU size is too small.
- B. Unknown TLVs cannot be displayed.
- C. LLDP TX is not enabled.
- D. LLDP-MED needs to be enabled.
Answer: D
NEW QUESTION # 145
Company A has an existing HPE Aruba Networking CX 8325 VSX.
It has acquired Company B and must merge its networks onto the same VSX switch configuration as Company A.
Both Company A and Company B share the same 10.100.100.1/21 subnet.
What is the correct order for creating a configuration allowing overlapping networks in the setup?
Answer:
Explanation:
Explanation:
A screenshot of a computer AI-generated content may be incorrect.
NEW QUESTION # 146
You are planning a 10 Gbps link between two CX switches. Which type of SFP port will be required?
- A. SFP28
- B. QSFP+
- C. SFP+
- D. SFP
Answer: C
Explanation:
A 10 Gbps link requires an SFP+ transceiver.
SFP28 supports 25 Gbps
SFP supports 1 Gbps
QSFP+ supports 40 Gbps
NEW QUESTION # 147
You need to quickly verify whether a server is responding to a connection request from a client device. What is the best way to capture these packets on a CX switch?
- A. Inspect the summary of the packets in real time on the switch using tcpdump
- B. Configure a mirror session to the CPU, use tshark to capture it to a PCAP file
- C. Configure a mirror session using ERSPAN to a computer running Wireshark
- D. Configure a mirror session with another port on the switch as the destination
Answer: D
Explanation:
For a quick packet capture on an Aruba CX switch, the simplest and fastest method is to mirror the relevant traffic to another physical port and connect a laptop running Wireshark. This requires minimal configuration and provides immediate, full visibility into the traffic exchange between the client and server.
NEW QUESTION # 148
How would you explain to a new HPE Aruba Networking CX customer how the switch can protect against use cases of malicious DHCP servers and ARP poisoning in the network where client-to- server communication is required?
- A. The system configuration database protects the information of authenticated clients.
- B. DHCP-snooping-table and ARP protection will together maintain valid information.
- C. The control-plane policy can configured with the allowed DHCP servers.
- D. Private VLANs can be used to isolate the server resources to protect false DHCP servers.
Answer: B
Explanation:
Combining DHCP snooping and ARP protection ensures the switch maintains a table of valid IP- to-MAC bindings from trusted DHCP servers, preventing clients from being misled by rogue DHCP servers or ARP poisoning attacks.
NEW QUESTION # 149
A customer has interfering devices that are seen over the air. They contact you and ask you to configure RAPIDS to help identify interfering and rogue APs. HPE Aruba Networking Central identifies a rogue AP and displays the connected switch port. How can HPE Aruba Networking Central identify which switch port the AP is connected to?
- A. From the AP MAC address table
- B. From the switch MAC address table
- C. From the switch LLDP neighbors table
- D. Device profiling on the switch
Answer: B
NEW QUESTION # 150
Which CLI command displays the current time synchronization status on an Aruba CX switch?
- A. show clock
- B. display ntp
- C. show time sync
- D. show ntp status
Answer: D
Explanation:
The show ntp status command verifies if the switch is synchronized with an NTP server, preventing time drift issues that could impact logs and security events.
NEW QUESTION # 151
Which technologies enable high availability in an HPE Aruba wired network?
(Select two.)
Response:
- A. Spanning Tree Protocol
- B. LLDP
- C. VSX
- D. AirWave
Answer: A,C
NEW QUESTION # 152
Which two Aruba CX switch series are designed for enterprise core and aggregation layers? (Select two)
- A. Aruba CX 4100i
- B. Aruba CX 9300
- C. Aruba CX 8400
- D. Aruba CX 6200
Answer: B,C
Explanation:
The CX 9300 and CX 8400 provide multi-terabit switching, with VXLAN/EVPN support, deep buffering, and high-speed interconnects for core and aggregation layers.
NEW QUESTION # 153
On an HPE Aruba Networking CX switch, what needs to be done to complete the redistribution of the selected static routes using a single area OSPF when partial configuration already below exists on the switch:
- A.
- B.
- C.
- D.
Answer: B
Explanation:
The prefix list and route map are already defined to match the desired static routes (prefix-list net172 referenced by route-map map-172).
To redistribute only those matched static routes into OSPF, the OSPF process must use the redistribute static route-map map-172 command under router ospf 1, which applies the route map to static-route redistribution.
NEW QUESTION # 154
Which CLI command is used to verify active VLAN assignments on an Aruba CX switch?
- A. show vlans
- B. show running-config
- C. show interface vlan
- D. show system
Answer: A
Explanation:
The show vlans command lists all configured VLANs, including assigned interfaces, VLAN IDs, and status, aiding network troubleshooting.
NEW QUESTION # 155
Which CLI command removes IGMP snooping from an Aruba CX switch?
- A. clear multicast igmp
- B. no ip igmp snooping
- C. disable igmp snooping
- D. unset igmp snooping
Answer: B
Explanation:
The no ip igmp snooping command disables multicast filtering, allowing multicast packets to be flooded to all ports within the VLAN instead of optimized forwarding.
NEW QUESTION # 156
You need to run a packet capture on a CX switch and be able to view the full output on a remote device in real-time. What is the best way to do this?
- A. Inspect the summary of the packets in real time on the switch using tcpdump
- B. Configure a mirror session to the CPU, use tshark to capture it to a PCAP file
- C. Configure a mirror session using ERSPAN to a computer running Wireshark
- D. Configure a mirror session with another port on the switch as the destination
Answer: C
Explanation:
To capture packets on an HPE Aruba CX switch and view the output remotely in real-time, the best practice is to use a mirror session that forwards traffic to a remote device running a packet analyzer such as Wireshark.
ERSPAN (Encapsulated Remote Switched Port Analyzer) allows the mirror traffic to be encapsulated in GRE and sent over an IP network to a remote monitoring station. This method ensures full packet capture with no local resource constraints and provides full visibility to the analyst.
Option B (using tcpdump on the switch) only provides summarized or limited capture locally.
Option C (mirroring to another switch port) only allows local monitoring and does not provide remote real- time viewing.
Option D (mirror to CPU and then use tshark) is less efficient and may be resource-intensive on the switch.
Therefore, configuring ERSPAN to a remote Wireshark host is the recommended and best way.
References:
HPE Aruba CX Switch Documentation - Packet Capture and ERSPAN configuration guide ArubaOS-CX Configuration Guide, Monitoring and Troubleshooting Chapter
NEW QUESTION # 157
Two companies have merged, and BGP is used for routing. The customer has informed you that they currently have about 3600 routes in the routing table and would like to keep the total number of routes below 5000. A BGP routing table from the company to be merged is provided as an example below:
Based on the provided example of the BGP routing table from the merging company, what should the customer consider to achieve the routing table size requirement?
- A. Set the route metrics equal for each prefix
- B. Advertise routes only using a primary path
- C. Import only 0.0.0.0/0 route
- D. Enforce routing policies with aggregation
Answer: D
Explanation:
The routing table shown contains many individual /24 prefixes.
To keep the total route count below the customer's 5000-route requirement, the company must reduce the number of specific prefixes being advertised.
The correct way to accomplish this is to implement route aggregation in BGP.
Aggregation summarizes multiple contiguous prefixes into a single advertisement, significantly reducing the number of routes learned and stored in the routing table.
NEW QUESTION # 158
What command is used to check VLAN assignments on an Aruba switch?
Response:
- A. show vlan
- B. show mac-address-table
- C. show spanning-tree
- D. show interface status
Answer: A
NEW QUESTION # 159
Which CLI command verifies the status of active spanning-tree instances?
- A. show spanning-tree
- B. display stp state
- C. show spanning-tree details
- D. show stp summary
Answer: A
Explanation:
The show spanning-tree command provides details on STP topology, helping identify performance issues caused by blocked or redundant links.
NEW QUESTION # 160
What does it mean when an event like the one below is seen on the HPE Aruba Networking CX switch?
2024-04-04T08:35:38.312254+00:00 ICX-Core-1 hpe-vaxd[2167]: Event[701|LOG_INFO|AMM1/1|VSX2 state local up, remote down]
- A. The physical interface of LAG 2 on the secondary VSX member is down.
- B. VSX keepalive has detected that the secondary member is down.
- C. VSX secondary switch is down.
- D. The multichassis LAG 2 interface is down on both switches.
Answer: C
Explanation:
The event message:
perl
Copy
2024-04-04T08:35:38.312254+00:00 ICX-Core-1 hpe-vaxd[2167]: Event[701|LOG_INFO|AMM1/1|VSX2 state local up, remote down] indicates that the local VSX member is up, but the remote VSX member is down. In a VSX pair, both switches must be operational for full redundancy and synchronization.
This log means the secondary VSX switch (remote) is down or unreachable, causing loss of synchronization and possibly traffic failover issues.
Option B (keepalive detection) is related but the event specifically shows the state of the remote switch being down.
Options C and D refer to LAG or interface state, which are not what this log entry describes.
References:
HPE Aruba VSX Troubleshooting Guide
ArubaOS-CX System Event Logs and Interpretation
VSX High Availability Documentation
NEW QUESTION # 161
An HPE Aruba Networking CX 6000 switch is connected to port 1/1/1 on an aggregation layer CX
8325 VSX configuration. The following state is seen on the aggregation switch:
The SVI on CX 6000 is not reachable. What can be done to enable connectivity to the SVI on CX
6000?
- A. Configure on VSX secondary:
int lag 1
lacp fallback - B. Configure on VSX primary:
int lag 1 multi-chassis
lacp fallback - C. Configure on VSX primary:
int lag 1
lacp fallback - D. Configure on VSX secondary
int lag 1 multi-chassis
lacp fallback
Answer: C
Explanation:
The LAG member toward the CX 6000 is being blocked because no valid LACP partner is detected. Enabling LACP fallback on the LAG allows the link to forward traffic even when LACP negotiation is not successfully established, restoring reachability to the CX 6000 SVI.
NEW QUESTION # 162
Your company needs to run BGP in a multi-homed configuration to two ISPs, advertising a block of public address space you own. Which AS number would be an example of a suitable number?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
For multi-homed BGP with public address space, you must use a globally unique public AS number. 64813 falls within the range of valid public 16-bit AS numbers.
NEW QUESTION # 163
A customer has connected a server to VLAN 100 on a 6300 switch which is streaming video using multicast group 224.0.0.100. This stream would need to be received by the clients in VLANs 200 and 300, routed on the same CX switch. What needs to be done to enable the requirement?
- A. The igmp needs to be enabled on the SVIs 100, 200, and 300
- B. The multicast group address needs to be changed to a routable subnet.
- C. The multicast group address needs to be changed to other 224.0.0x non-overlapping address
- D. The igmp-snooping needs to be enabled on SVIs 100, 200, and 300
Answer: B
Explanation:
The multicast group 224.0.0.100 is in the 224.0.0.x link-local multicast range, which is not routable. These addresses are restricted to the local VLAN and cannot be forwarded or routed between interfaces on any router or Layer-3 switch.
To allow multicast traffic to be routed from VLAN 100 to VLANs 200 and 300, the server must stream to a routable multicast group address (e.g., 239.x.x.x or 232.x.x.x).
Therefore, the multicast group must be changed to a routable subnet.
NEW QUESTION # 164
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