HPE3-U01 Dumps with Practice Exam Questions Answers

An access point is a device that creates a wireless local area network (WLAN) by connecting wireless devices to a wired network. An access point performs two main functions: bridging and wireless connectivity.

Bridging is the process of forwarding data frames between different networks or network segments. An access point bridges wireless frames from wireless devices to the wired network, and vice versa, using the destination MAC address of the frame. This allows wireless devices to communicate with other devices on the same network or on different networks.

Wireless connectivity is the process of providing a wireless signal to wireless devices, such as laptops, smartphones, tablets, etc. An access point offers wireless connectivity to endpoints by broadcasting a service set identifier (SSID), which is the name of the wireless network. Wireless devices can scan for available SSIDs and connect to the access point by providing the correct security credentials, such as a password or a certificate.

The other statements are false because:

A. They use destination IP addresses to switch the packets. This is false because access points do not use IP addresses to switch packets. IP addresses are used at layer three of the OSI model, which is the network layer. Access points operate at layer two of the OSI model, which is the data link layer. Access points use MAC addresses to switch frames, not packets.

C. They are used to interconnect wireless devices only. This is false because access points are not used to interconnect wireless devices only. Access points are also used to connect wireless devices to a wired network, which may contain other devices, such as routers, switches, servers, etc.

E. They only operate at Layer three of the OSI model. This is false because access points do not operate at layer three of the OSI model, which is the network layer. Access points operate at layer two of the OSI model, which is the data link layer. Access points do not use network layer protocols, such as IP, to perform their functions. References:

• What is an Access Point? - Cisco
• Access Point | What is it and how it works?IAPP specification

A hardwire desktop PC belongs to the category of stationary devices, which are devices that are fixed in one location and do not move. Stationary devices typically have a constant power supply and a wired network connection. Examples of stationary devices are desktop PCs, servers, printers, and IP phones. Stationary devices are different from mobile devices, which are devices that can move from one location to another and connect to the network wirelessly. Mobile devices can be further classified into somewhat mobile devices, highly mobile devices, and intermittent mobile devices, depending on their mobility patterns and network requirements. Examples of mobile devices are laptops, tablets, smartphones, and wearable devices. References:

• Aruba Certified Network Technician (ACNT) | HPE Aruba Networking
• Aruba Documentation Portal

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 IP address 10.0.128.0/23 is a Class A private address with a subnet mask of 255.255.254.0. This means that the network prefix is 10.0.128.0 and the host identifier is the last 9 bits of the address. To find the number of IP assignable addresses, we need to subtract 2 from the total number of possible hosts, which is29=512. This is because the network address (10.0.128.0) and the broadcast address (10.0.129.255) are reserved and cannot be assigned to any host. Therefore, the number of IP assignable addresses is 512 - 2 = 510.References:IP Subnet Calculator,CIDR Calculator for IPv4 addresses,Free online IPv4 subnet calculator

Full-duplex is a switchport feature that allows simultaneous transmission and reception of data on a link, without causing collisions. Collisions occur when two devices try to send data at the same time on a shared medium, such as a half-duplex link or a hub. Full-duplex eliminates the need for collision detection and avoidance mechanisms, such as CSMA/CD, and increases the effective bandwidth of the link. Full-duplex requires both ends of the link to support and be configured for full-duplex mode. If one end is configured for full-duplex and the other for half-duplex, the result is a duplex mismatch, which causes performance issues and errors. Auto speed is a switchport feature that allows the switch to negotiate the speed of the link with the connected device, such as 10 Mbps, 100 Mbps, or 1000 Mbps. VLANs are logical groups of devices that share the same broadcast domain, regardless of their physical location or connection. VLANs can reduce collisions by segmenting the network and limiting the scope of broadcasts. However, VLANs alone do not prevent collisions on a link, as they depend on the duplex mode of the switchport. Half-duplex is a switchport feature that allows only one direction of data transmission at a time on a link, either sending or receiving. Half-duplex requires collision detection and avoidance mechanisms, such as CSMA/CD, to coordinate the access to the shared medium. Half-duplex reduces the effective bandwidth of the link by half, as only one device can use the link at a time. Half-duplex can cause collisions if two devices try to send data at the same time on the same link. References:

• Aruba Certified Network Technician (ACNT) | HPE Aruba Networking
• Aruba Documentation Portal
• switch port collisions - Cisco Community
• Why is a switch port a collision domain? - Cisco Community