Free HP HPE3-U01 Practice Exam with Questions & Answers

A BSSID is a 48-bit label that identifies a basic service set (BSS) within a wireless network. A BSS is a subgroup of devices that share physical-layer medium access characteristics, such as radio frequency, modulation scheme, and security settings. A BSSID is usually the MAC address of the access point (AP) that creates the BSS, or a randomly generated value in an ad hoc network. A BSSID is different from an SSID, which is the name of the wireless network that users see and connect to. An SSID can have multiple BSSIDs associated with it, depending on the number and location of the APs. A BSSID is used to differentiate between different BSSs and to facilitate roaming and load balancing among them. References: https://internetspeedtest.world/wiki/bssid

https://www.minthaik.com/bssid-basic-service-set-identifier/

To configure interfaces 1/1/1 and 1/1/2 as VLAN 10 access ports in ArubaOS-CX switches, the following commands are required:

switch(config)# vlan 10

switch(config-vlan-10)# name VLAN10

switch(config-vlan-10)# exit

switch(config)# interface 1/1/1

switch(config-if)# no shutdown

switch(config-if)# vlan access 10

switch(config-if)# exit

switch(config)# interface 1/1/2

switch(config-if)# no shutdown

switch(config-if)# vlan access 10

switch(config-if)# exit

Option B shows the correct syntax and sequence of commands to create VLAN 10, assign a name to it, and configure the interfaces as access ports in that VLAN. Option A is incorrect because it uses the wrong keyword vlan-id instead of vlan access. Option C is incorrect because it does not create VLAN 10 before assigning the interfaces to it. Option D is incorrect because it uses the wrong keyword vlan mode instead of vlan access. References: ArubaOS-CX 10.05 Fundamentals Guide 6200 Switch Series, Configuring VLANs on AOS-CX - Aruba

 Adjacent Channel Interference (ACI) is a type of interference that occurs when two or more wireless devices use channels that are close to each other in the same frequency band. ACI reduces the signal quality and throughput of the wireless devices, as they have to compete for the same spectrum and deal with the noise from the neighboring channels12

The 5 GHz band has more non-overlapping channels than the 2.4 GHz band, which means that there is less chance of ACI in the 5 GHz band. However, ACI can still occur in the 5 GHz band if the wireless devices use wider channel bandwidths, such as 40 MHz or 80 MHz, which are supported by 802.11n and 802.11ac standards. Wider channel bandwidths can increase the data rate and performance of the wireless devices, but they also occupy more spectrum and reduce the number of available channels134

Therefore, one condition that allows 5 GHz channels to avoid ACI is to transmit at 20 MHz bandwidth, which is the narrowest channel bandwidth supported by 802.11a/n/ac standards. By transmitting at 20 MHz bandwidth, the wireless devices can use more non-overlapping channels in the 5 GHz band and minimize the impact of ACI. However, this alsomeans that the wireless devices will have lower data rates and performance than using wider channel bandwidths134

Another condition that can help avoid ACI in the 5 GHz band is to use channel bonding, which is a technique that combines two or more adjacent channels into one wider channel. Channel bonding can increase the data rate and performance of the wireless devices, but it also requires careful planning and coordination to avoid overlapping with other wireless devices. Channel bonding can be done with 40 MHz or 80 MHz channel bandwidths, but not with 20 MHz channel bandwidths134 References: 

https://www.ti.com/pdfs/bcg/80211_acr_wp.pdf

https://www.ti.com/pdfs/bcg/80211_acr_wp.pdf

According to the Ethernet cable standards, Cat 6 UTP-based cabling can support 1 Gbps data rates up to 100 meters (328 feet) of cable length. This is the maximum recommended distance for a single cable run between a host and the switch where it is plugged in. If the cable length exceeds 100 meters, the signal quality may degrade and cause errors or lower performance. Cat 6 UTP-based cabling can also support 10 Gbps data rates up to 37-55 meters (121-180 feet), depending on the alien crosstalk atmosphere. However, for 10 Gbps data rates, Cat 6a UTP-based cabling is preferred, as it can support the full 100 meters of cable length. References https://networkengineering.stackexchange.com/questions/81114/degradation-of-signal-quality-as-a-function-of-cat-6-cable-length

https://www.howtogeek.com/813419/how-long-can-an-ethernet-cable-be/

 Aruba Central is a cloud-based networking solution that offers simplicity, security, and scalability for managing Aruba network infrastructure. It uses HTTPs to communicate with networking equipment such as wireless, wired, VPN, and SD-WAN devices. It also provides AI-powered insights, workflow automation, and advanced security features to unifyoperations across campus, branch, data center, and remote work environments. Aruba Central does not require an on-premises server, nor does it use SNMP for management. It also does not support third-party networking equipment, as it is designed for Aruba ESP (Edge Services Platform). References: Aruba Central for Cloud-managed networking, About Aruba Central, Aruba Central data sheet

According to the Aruba Network Technician (ACNT) documents and learning resources, the valid configurable “Client VLAN Assignment” options for a Bridge-based WLAN in Aruba Central are native VLAN, automatic VLAN, and static VLAN. These options allow you to specify how the VLAN ID for the WLAN clients is determined.

• Native VLAN: This option allows you to use the native VLAN of the AP’s Ethernet port as the VLAN ID for the WLAN clients. The native VLAN is the default VLAN that carries untagged traffic on a trunk port. This option is useful when you want to simplify the VLAN configuration and use the same VLAN for all the WLAN clients connected to the same AP.
• Automatic VLAN: This option allows you to use the VLAN ID assigned by a DHCP server to the WLAN clients. The DHCP server can use attributes such as MAC address, hostname, or vendor class to assign different VLAN IDs to different WLAN clients. This option is useful when you want to dynamically assign VLANs based on the client characteristics or policies.
• Static VLAN: This option allows you to specify a single VLAN ID for all the WLAN clients. You can either enter a VLAN ID manually or select a named VLAN from the drop-down list. A named VLAN is a VLAN that has a user-defined name associated with it for easy identification. This option is useful when you want to assign a fixed VLAN to a WLAN SSID.

References:

The subnet mask 255.255.252.0 is equivalent to the CIDR notation /22, which means that 22 bits are used for the network prefix and 10 bits are used for the host part. To calculate the number of addresses that this subnet mask provides, we can use the formula2n−2, wherenis the number of bits in the host part. In this case,n=10, so the number of addresses is210−2=1024−2=1022. The subtraction of 2 is because the first and the last addresses are reserved for the network identifier and the broadcast address, respectively. Therefore, the subnet mask 255.255.252.0 provides 1022 usable addresses for hosts, plus 2 reserved addresses, for a total of 1024 addresses.References:IP Subnet Calculator,How many host addresses are available on the network … - ITExamAnswers

To access the second interface of a one-rack-unit standalone ArubaOS-CX switch, you should enter the command interface 0/0/2. This command specifies the interface name in the format of interface //, where  is the chassis number,  is the module number, and  is the port number. For a one-rack-unit standalone switch, the chassis number is always 0, and the module number is also 0 for the front panel ports. The port number starts from 1 and increments by 1 for each port. Therefore, the second interface of the switch is named interface 0/0/2. The other options are incorrect because they do not follow the correct interface naming convention for a one-rack-unit standalone switch. References: ArubaOS-CX 10.05 Command-Line Interface Guide 6200 Switch Series, ArubaOS-CX Switches - Configuring for initial access and performing a software upgrade

The Wi-Fi Alliance is an organization that promotes interoperability among WLAN device manufacturers. The Wi-Fi Alliance is an important organization for the advancement of wireless LAN (WLAN) technology. It develops certification programs and technologies that deliver quality Wi-Fi experiences. Members have completed more than 80,000 certifications. Through industry-developed comprehensive testing, Wi-Fi Alliance certification programs ensure that Wi-Fi products from multiple manufacturers work well together. These certification programs are foundational to the rapid adoption and proliferation of Wi-Fi products in home, office, and public access locations around the world and underpin the success of Wi-Fi technology proliferation. Only Wi-Fi CERTIFIED™ products have been tested to deliver interoperability with the latest technologies, and industry-standard security protections. The Wi-Fi CERTIFIED logo gives consumersconfidence that the Wi-Fi devices purchased deliver a positive user experience, regardless of brand. For retailers, vendors, and service providers, the Wi-Fi CERTIFIED seal of approval means consistent performance and better user experience. A company must be a member of Wi-Fi Alliance ® and achieve certification to use the Wi-Fi CERTIFIED logo and Wi-Fi CERTIFIED certification marks. The Wi-Fi Alliance certification programs cover the following categories: Connectivity, Security, Mobility, Coexistence, and Performance123. References: Certification | Wi-Fi Alliance, Programs | Wi-Fi Alliance, Aruba Certified Network Technician Exam HPE3-U01 Actual Questions, Why Wi-Fi Certification Really Matters | Aruba Blogs

The management plane is the logical path of all traffic related to the management of the device. Examples of protocols processed in the management plane are Simple Network Management Protocol (SNMP), Telnet, HTTP, Secure HTTP (HTTPS), and SSH. These management protocols are used for monitoring and for command-line interface (CLI) access12. Therefore, HTTPS and SSH are protocols that operate on the management plane, while the other options are not. TCP is a transport layer protocol that provides reliable data delivery for various applications, but it is not specific to the management plane3. ARP is a network layer protocol that resolves IP addresses to MAC addresses, but it is not used for device management4. STP is a data link layer protocol that prevents loops in switched networks, but it is not related to the management plane5. References: 1: Management Plane Protection - Cisco 2: Planes of Operation > IP Routing on Cisco IOS, IOS XE, and IOS XR: How … 3: [Transmission Control Protocol - Wikipedia] 4: [Address Resolution Protocol - Wikipedia] 5: [Spanning Tree Protocol - Wikipedia] : https://en.wikipedia.org/wiki/Transmission_Control_Protocol : https://en.wikipedia.org/wiki/Address_Resolution_Protocol : https://en.wikipedia.org/wiki/Spanning_Tree_Protocol