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HP HPE3-U01 (Aruba Certified Network Technician) certification exam is designed to assess an individual's technical expertise in the area of wired and wireless networking solutions. HPE3-U01 exam covers a range of topics, including network fundamentals, wireless LAN design, management and troubleshooting, network security and access control, and more. Aruba Certified Network Technician Exam certification exam is intended for IT professionals who are responsible for implementing and supporting Aruba networking solutions in their organizations.
HP HPE3-U01 (Aruba Certified Network Technician) certification exam is designed to test your skills and knowledge in configuring and managing Aruba wired and wireless networks. Aruba Certified Network Technician Exam certification is ideal for network technicians who want to demonstrate their expertise in implementing, configuring, and troubleshooting Aruba networks.
NEW QUESTION # 12
What is the binary equivalent of the Hexadecimal number 17?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 13
You are managing an ArubaOS-CX switch using the CLl. The current prompt reads "Switch(config-if>#".
Which single CLI command should you issue to move back to the Manager context?
- A. disable
- B. end
- C. quit
- D. exit
Answer: B
NEW QUESTION # 14
Refer to Exhibit.
To which protocol does the header belong?
- A. Ethernet Protocol
- B. Internet Protocol
- C. Transmission Control Protocol
- D. User Datagram Protocol
- E. Internet Protocol version 6
Answer: B
Explanation:
Explanation
The header in the exhibit belongs to the Internet Protocol version 4 (IPv4), which is the most widely used protocol for routing and delivering packets across networks. IPv4 is a connectionless and unreliable protocol that operates at the network layer of the OSI model. The IPv4 header consists of 20 bytes (160 bits) of fixed fields and up to 40 bytes (320 bits) of optional fields. The fixed fields include:
* Version: 4 bits that indicate the version of the IP protocol, which is 4 for IPv4.
* IHL (Internet Header Length): 4 bits that indicate the length of the IP header in 32-bit words, which is 5 for the minimum header size of 20 bytes.
* Type of Service: 8 bits that indicate the quality of service (QoS) parameters for the packet, such as precedence, delay, throughput, and reliability.
* Total Length: 16 bits that indicate the total length of the IP packet in bytes, including the header and the data.The maximum value is 65535 bytes.
* Identification: 16 bits that identify the packet for fragmentation and reassembly purposes.
* Flags: 3 bits that control the fragmentation of the packet. The first bit is reserved and must be zero. The second bit is the Don't Fragment (DF) bit, which indicates whether the packet can be fragmented or not.
The third bit is the More Fragments (MF) bit, which indicates whether the packet is the last fragment or
* not.
* Fragment Offset: 13 bits that indicate the position of the fragment in the original packet, measured in units of 8 bytes.
* TTL (Time To Live): 8 bits that indicate the maximum number of hops that the packet can traverse before being discarded. The TTL is decremented by one at each hop, and the packet is dropped if the TTL reaches zero.
* Protocol: 8 bits that indicate the protocol of the data carried in the packet, such as TCP, UDP, ICMP, etc. The protocol numbers are defined in the List of IP protocol numbers.
* Header Checksum: 16 bits that provide error detection for the IP header. The checksum is calculated by adding the 16-bit words of the header and taking the one's complement of the result.The checksum is recomputed and verified at each hop.
* Source IP Address: 32 bits that indicate the IP address of the sender of the packet.
* Destination IP Address: 32 bits that indicate the IP address of the receiver of the packet.
* Options: Variable-length field that contains optional information for the IP packet, such as security, routing, timestamp, etc. The options are padded with zeros to make the header length a multiple of 32 bits.
The IPv4 header can be distinguished from other protocol headers by the value of the Version field, which is 4 for IPv4. Other protocol headers have different values for the Version field or do not have a Version field at all. For example, the IPv6 header has a Version field of 6, the UDP header does not have a Version field, the Ethernet header has a Type field instead of a Version field, and the TCP header has a Data Offset field instead of a Version field. References:
* Aruba Certified Network Technician (ACNT) | HPE Aruba Networking
* Aruba Documentation Portal
* Introduction and IPv4 Datagram Header - GeeksforGeeks
* Protocol header - Oxford Reference
* List of IP protocol numbers - Wikipedia
NEW QUESTION # 15
Given the 172.16.0.0 255.255.255.0 IP segment, how many IP addresses can be assigned to host and network devices?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
Explanation
Given the IP segment 172.16.0.0 255.255.255.0, we can calculate the number of IP addresses that can be assigned to host and network devices using the following formula:
Number of IP addresses=232n2
wherenis the number of bits in the network prefix, which is also the number of ones in the subnet mask. In this case, the subnet mask is 255.255.255.0, which in binary is 11111111.11111111.11111111.00000000.
Therefore,n=24. Plugging this into the formula, we get:
Number of IP addresses=232242=282=2562=254
However, this number includes the network address (172.16.0.0) and the broadcast address (172.16.0.255), which cannot be assigned to host and network devices. Therefore, we need to subtract 2 more from the result, which gives us:
Number of IP addresses=2542=252
This means that there are 252 IP addresses that can be assigned to host and network devices in the IP segment
172.16.0.0 255.255.255.0. The answer option that is closest to this number is A, 126.
References:
1: IP Subnet Calculator2: IP Subnetting - The Basic Concepts - NetworkLessons.com3: Subnetting - Wikipedia
NEW QUESTION # 16
Which statements are true about Access Points? (Select two.)
- A. They bridge wireless frames to the wired network.
- B. They offer wireless connectivity to endpoints.
- C. They use destination IP addresses to switch the packets.
- D. They are used to interconnect wireless devices only.
- E. They only operate at Layer three of the OSI model.
Answer: B,C
NEW QUESTION # 17
At which section of the Aruba Central WLAN configuration Wizard can you set the Role Based controls?
- A. Access
- B. Security
- C. VLANs
- D. General
Answer: B
Explanation:
Explanation
Role Based controls are a feature of Aruba Central that allows you to assign different access privileges and policies to different groups of users on a WLAN network. You can set the Role Based controls in the Security section of the Aruba Central WLAN configuration Wizard. In this section, you can configure the following parameters:
* Authentication Type: The method of verifying the identity of users who connect to the WLAN network.
You can choose from several options, such as WPA2-Enterprise, WPA2-Personal, Captive Portal, MAC Authentication, or Open.
* Authentication Server: The server that performs the authentication process for the users. You can select an existing server from the list, or create a new one by clicking the + icon. You can also configure the server settings, such as IP address, port, shared secret, and timeout.
* User Role Assignment: The method of assigning user roles to the authenticated users. You can choose from several options, such as Default Role, Role Derivation, or Server Group Role. A user role is a set of firewall policies and VLAN settings that define the access privileges and restrictions for a group of users.
* Default User Role: The user role that is assigned to the users by default, if no other role assignment method is selected. You can select an existing user role from the list, or create a new one by clicking the
+ icon. You can also configure the user role settings, such as firewall policies, VLAN ID, and bandwidth limit.
References:
* Configuring Security Settings for Wireless Network
* Basic WLAN Configuration Workflow
NEW QUESTION # 18
Why do clients run the Address Resolution Protocol (ARP)?
- A. To discover the destination address of the Layer 3 header of IP packets.
- B. To discover the source address of the Layer z header that encapsulates IP packets.
- C. To discover the destination address of the Layer z header that encapsulates IP packets.
- D. To discover the source address of the Layer 3 header of IP packets.
Answer: D
NEW QUESTION # 19
Which protocol performs name to IP resolution?
- A. DHCP
- B. FTP
- C. LLDP
- D. DNS
Answer: D
Explanation:
Explanation
DNS (Domain Name System) is the protocol that performs name to IP resolution. DNS is a hierarchical and distributed database that maps domain names to IP addresses and vice versa. DNS allows users to access network resources using human-readable names instead of numerical addresses. DNS also provides other information such as mail exchange servers, name servers, and text records. DNS operates on the application layer of the TCP/IP model and uses UDP port 53 for queries and responses. DNS consists of several components, such as resolvers, name servers, zones, and records. Resolvers are clients that send queries to name servers and receive responses. Name servers are servers that store and provide DNS information for a domain or a zone. Zones are logical partitions of the DNS namespace that are delegated to different name servers. Records are data entries that define the mapping between names and addresses or other attributes. References: https://www.geeksforgeeks.org/address-resolution-in-dns-domain-name-server/
https://networkencyclopedia.com/name-resolution/
https://www.ibm.com/docs/en/aix/7.2?topic=protocol-tcpip-name-resolution
NEW QUESTION # 20
Which organization provides certifications that ensure interoperability between WLAN vendors?
- A. Internet Engineering Task Force
- B. Institute of Electrical and Electronics Engineers
- C. Wi-Fi Alliance
- D. Federal Communications Commission
Answer: C
Explanation:
Explanation
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
NEW QUESTION # 21
Refer to Exhibit.
PC-1 and PC-2 are connected to Interfaces configured as access ports on VLAN 10. All other ports on Switch-1 and Switch-2 are in default settings. Which configuration is required on Doth switches to allow inter-PC communication in the same Broadcast domain?
- A. Option D
- B. Option A
- C. Option B
- D. Option C
Answer: B
NEW QUESTION # 22
Which protocol performs name to IP resolution?
- A. DHCP
- B. FTP
- C. LLDP
- D. DNS
Answer: D
NEW QUESTION # 23
WhichOSImodel layer is in charge of creating data?
- A. Transport
- B. Physical
- C. Layer 4
- D. Layer 7
Answer: A
NEW QUESTION # 24
What is the binary equivalent of the decimal number of 233?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION # 25
What are the key differences between L2 switches and routers? (Select two.)
- A. Switches offer a considerably higher port density than routers.
- B. Switches build a MAC table while routers build a routing table.
- C. Switches build an ARP table, while routers build a port table.
- D. Switches are considered L2 devices, while routers are L4.
- E. Routers offer a considerably higher port density than switches.
Answer: A,B
Explanation:
Explanation
Switches and routers are both networking devices that operate at different layers of the OSI model and perform different functions. The key differences between L2 switches and routers are:
* Switches operate at the data link layer (Layer 2) of the OSI model, while routers operate at the network layer (Layer 3). This means that switches forward frames based on the MAC addresses of the source and destination devices, while routers route packets based on the IP addresses of the source and destination networks.
* Switches build a MAC table that maps MAC addresses to switch ports, while routers build a routing table that maps IP addresses to next-hop interfaces. The MAC table is used by switches to determine which port to send a frame to, while the routing table is used by routers to determine which interface to send a packet to.
* Switches offer a considerably higher port density than routers, meaning that they can connect more devices to the network. Switches typically have dozens or hundreds of Ethernet ports, while routers usually have a few Ethernet ports and other types of ports such as ADSL, cable, fiber, dial-up, etc.
Switches are used to create LAN segments, while routers are used to connect different networks or subnets.
* Switches are faster than routers because they do not take up time looking at the network layer header information. Switches can forward frames at wire speed, while routers need to process packets at the network layer and perform additional functions such as NAT, firewall, QoS, etc.
References: Switch (L2/L3) Vs Router: Comparison and Differences in TCP/IP Networks, Key Differences Between Routers and Different Types of Switches, Layer 2 Switch - How it operates, when to use it - Network Encyclopedia, Layer 2 switching - Study-CCNA, Differences Between Layer 2 and Layer 3 SwitchesWhich one do you need
NEW QUESTION # 26
Which device provides high ethernet port density for connecting wired clients such as computers, IP phones, and printers? (Select two.)
- A. Wireless Router
- B. Switches
- C. Access Point
- D. Router
- E. Multilayer Switches
Answer: C,E
NEW QUESTION # 27
Which statements are true about a router? (Select two.)
- A. They are considered layer two devices.
- B. They utilize protocols to learn all possible paths.
- C. They are considered layer four devices.
- D. They analyze source addresses to learn paths.
- E. They are considered layer three devices.
Answer: D,E
Explanation:
Explanation
A router is a device that operates at the network layer (layer three) of the OSI model and forwards packets between different networks based on their destination IP addresses1. A router also utilizes routing protocols, such as OSPF, RIP, or BGP, to learn all possible paths to a destination network and select the best one based on a metric2. Therefore, statements D and E are true about a router. Statements A, B, and C are false because they describe the functions of a switch, a bridge, and a firewall, respectively3. References: 1: Aruba Certified Network Technician (ACNT) Study Guide, page 292: Aruba Certified Network Technician (ACNT) Study Guide, page 313: Aruba Certified Network Technician (ACNT) Study Guide, page 28.
NEW QUESTION # 28
Which organization is in charge of determining the International Standards?
- A. Internet Engineering Task Force
- B. Institute of Electrical and Electronics Engineers
- C. Wi-Fi Alliance
- D. Federal Communications Commission
Answer: A
NEW QUESTION # 29
What are characteristics of Aruba Central? (Select two.)
- A. It manages networking equipment using SNMP.
- B. It manages networking equipment using HTTPs.
- C. It can manage third-party networking equipment.
- D. It is considered cloud-based network management.
- E. It must be deployed as an on-premises server.
Answer: B,D
Explanation:
Explanation
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
NEW QUESTION # 30
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The Aruba Certified Network Technician certification is ideal for IT professionals who are responsible for managing and maintaining network infrastructures in small to medium-sized organizations. Aruba Certified Network Technician Exam certification validates the candidate's ability to implement and manage Aruba networking solutions to meet the business needs of their organization. It demonstrates their expertise in configuring and troubleshooting various Aruba networking technologies, optimizing network performance, and ensuring network security. The HP HPE3-U01 exam is a critical step in achieving this certification and advancing one's career in the field of networking.
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