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HP HPE3-U01 (Aruba Certified Network Technician) Exam is a certification exam for individuals who wish to demonstrate their knowledge and skills in networking technologies. HPE3-U01 exam is designed to test the candidate's ability to install, configure, and maintain Aruba networks. HPE3-U01 exam covers a range of topics including network fundamentals, wireless LANs, wired and wireless security, troubleshooting, and network management. HPE3-U01 exam is intended for individuals who are responsible for the day-to-day operation of an Aruba network, including network technicians, network engineers, and network administrators.
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.
NEW QUESTION # 14
Which protocols operate on the Management Plane? (Select two.)
- A. Spanning Tree Protocol
- B. Hypertext Transfer Protocol Secure
- C. Secure Shell
- D. Address Resolution Protocol
- E. Transmission Control Protocol
Answer: A,C
NEW QUESTION # 15
Which unit of measurement is recommended for expressing radio frequency power due to its logarithmic nature?
- A. decibel relative to milliwatt (dBm)
- B. milliwatt (mW)
- C. lumens
- D. decibel relative to isotrope (dBi)
Answer: A
Explanation:
Explanation
Decibel (dB)Decibel is a logarithmic unit of measure used to express the ratio of two values of the same measure. This unit is not included to the System International of units (SI), but it is widely used in communication systems and many other technical fields, as it allows to compare two values of any nature, provided that these values are expressed in the same unit.
Decibel is a decile of the main, larger unit - Bel. Bel is a common logarithm of the ratio of two energies. But in practice Bel was a far too big value, therefore its tenth part is used - decibel.
The logarithmic method of presentation of numbers often can be very useful, as it allows to replace multiplication with addition, division with subtraction, raising to power with multiplication, and extracting a root with the division.
What is measured in dB in the MRFC:
* Gain constant
* Sound level
* Signal/noise ratio
* Signal attenuation
https://en.cyclopedia.ifcg.ru/wiki/Radiofrequency_characteristics
NEW QUESTION # 16
How many IP assignable addresses are contained in 10.0.128.0/23?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION # 17
Which organization is in charge of determining the International Standards?
- A. Institute of Electrical and Electronics Engineers
- B. Wi-Fi Alliance
- C. Internet Engineering Task Force
- D. Federal Communications Commission
Answer: C
NEW QUESTION # 18
What is the binary equivalent of the decimal number of 233?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 19
Which Wi-Fi technology assists with data privacy on open networks?
- A. Opportunistic Wireless Encryption (OWE)
- B. Simultaneous Authentications of Equals (SAE)
- C. Commercial National Security Algorithm (CNSA)
- D. Wi-Fi Protected Access 2 (WPA2)
Answer: A
Explanation:
Explanation
OWE is a Wi-Fi technology that assists with data privacy on open networks by providing unauthenticated data encryption. OWE is based on the standard defined in RFC 8110, which specifies an extension to IEEE 802.11 that uses a cryptographic handshake to encrypt the devices connecting to open network access points. OWE reduces the risk of data exposure or theft when using an open Wi-Fi network, without adding complexity or scalability burdens. OWE is part of the Wi-Fi CERTIFIED Enhanced Open program, which is a new certification for Wi-Fi devices that support this technology123 References:
* Wi-Fi CERTIFIED Enhanced Open: Transparent Wi-Fi ... - Wi-Fi Alliance
* Debunking Wi-Fi Security Myths: Cellular Networks are ... - TechSpective
* 10. Use adequate security to send or receive health information over ...
NEW QUESTION # 20
Which characteristic allows switches to mitigate collisions?
- A. The switches use L3 protocols that eliminate collisions.
- B. The switches support VLANs that segment the collision domains.
- C. The switches' ports are independent collision domains.
- D. The switches have proprietary features that help eliminate collisions.
Answer: C
Explanation:
Explanation
A collision occurs when two or more devices try to transmit data at the same time on a shared medium, such as a bus or a hub. Collisions degrade network performance and cause data loss. Switches mitigate collisions by creating separate collision domains for each port. This means that each port can transmit and receive data without interfering with other ports. Switches also use full-duplex communication, which allows simultaneous transmission and reception of data on each port, further reducing the chances of collisions. VLANs and L3 protocols do not affect collisions, as they operate at different layers of the network model. Proprietary features are not a general characteristic of switches, and may not be compatible with other vendors' switches. References: Aruba Certified Network Technician (ACNT) | HPE Aruba Networking, Aruba Documentation Portal
NEW QUESTION # 21
What is the maximum recommended distance for a 1 Gbps Ethernet connection using Cat 6 UTP-based cabling between a host and the switch where it is plugged in?
- A. 15 meters (49 feet)
- B. 100 meters (328 feet)
- C. 50 meters (164 feet)
- D. 300 meters (984 feet)
Answer: B
NEW QUESTION # 22
What is the binary equivalent of the Hexadecimal number 17?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION # 23
Which accurately describes the TCP/IP Model? (Select two.)
- A. It specifies how to compress, fragment, encrypt, and analyze data.
- B. It is a set of communication protocols used on TCP-based networks only.
- C. It specifies how to assemble, address, transmit, route, and disassemble a data packet.
- D. It is a set of communication protocols used on Ethernet-based networks only.
- E. It is a set of communication protocols used on IP-based networks only.
Answer: C,E
Explanation:
Explanation
The TCP/IP model is a hierarchical protocol for network communication. It consists of four layers: the application layer, the transport layer, the internet layer, and the network interface layer. Each layer has specific functions and protocols that enable data transmission over the internet123 The TCP/IP model does not specify how to compress, fragment, encrypt, or analyze data. These are functions that may be performed by some protocols at different layers, but they are not part of the TCP/IP model itself.
Therefore, option B is incorrect.
The TCP/IP model does not depend on the underlying physical network or data link technology. It can work on any network that supports IP addressing and routing, such as Ethernet, Wi-Fi, ATM, etc. Therefore, options A and E are incorrect.
The TCP/IP model specifies how to assemble, address, transmit, route, and disassemble a data packet. This is the core function of the internet layer, which uses the Internet Protocol (IP) to perform these tasks. IP is responsible for delivering packets from the source to the destination, based on the IP addresses of the hosts.
Therefore, option C is correct.
The TCP/IP model is a set of communication protocols used on IP-based networks only. This means that any network that supports the internet layer of the TCP/IP model can use the TCP/IP protocols. IP-based networks are the most common and widely used networks in the world, as they enable the interconnection of different networks and devices across the internet. Therefore, option D is correct. References: https://www.guru99.com/tcp-ip-model.html
https://www.javatpoint.com/computer-network-tcp-ip-model
NEW QUESTION # 24
Which condition allows 5Ghz channels to avoid Adjacent Channel Interference?
- A. transmit at low power levels
- B. transmit at 40 MHz bandwidth
- C. transmit at 20 MHz bandwidth
- D. transmit at high power levels
Answer: B
Explanation:
Explanation
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
NEW QUESTION # 25
Which commands can you use to save the switch configuration changes, so they survive a switch reboot?
(Select two.)
- A. save memory
- B. copy running-config checkpoint backup
- C. write memory
- D. store memory
- E. copy running-config checkpoint startup-config
Answer: A,C
Explanation:
Explanation
To save the switch configuration changes, so they survive a switch reboot, you can use either the write memory or the save memory command. Both commands perform the same function, which is to copy the running configuration to the startup configuration. The running configuration is the current active configuration in the switch's RAM, while the startup configuration is the configuration that is loaded when the switch boots up. By saving the configuration changes to the startup configuration, you ensure that they are preserved after a reboot12. The other commands are not valid for saving the configuration changes. The copy running-config checkpoint backup and copy running-config checkpoint startup-config commands are used to create checkpoints, which are snapshots of the running configuration that can be used to roll back changes in case of errors3. The store memory command does not exist in Aruba switches. References: 1: Saving Configuration Changes - Aruba 2: [ArubaOS-Switch 16.10 CLI Reference Guide] 3: [ArubaOS-Switch 16.10 Configuration and Management Guide] :
https://www.arubanetworks.com/techdocs/ArubaOS-Switch_16.10/5200-6928.pdf :
https://www.arubanetworks.com/techdocs/ArubaOS-Switch_16.10/5200-6929.pdf
NEW QUESTION # 26
Which command should you enter to access the second interface of the third slot in a modular ArubaOS-CX switch?
- A. Interface 0/3/2
- B. Interface 0/2/3
- C. Interface 1/3/2
- D. Interface 3/1/2
Answer: D
NEW QUESTION # 27
What is the binary equivalent of the decimal number of 233?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
Explanation
The binary equivalent of the decimal number of 233 is 11101001. To find this, we can use the following method:
* Divide 233 by 2 and write down the remainder. The remainder is either 0 or 1.
* Divide the quotient by 2 and write down the new remainder.
* Repeat this process until the quotient is 0.
* Write the remainders from the bottom to the top. This is the binary equivalent.
For example:
Table
Quotient
Remainder
233 / 2
1
116 / 2
0
58 / 2
0
29 / 2
1
14 / 2
0
7 / 2
1
3 / 2
1
1 / 2
1
0 / 2
0
The remainders from the bottom to the top are 11101001, which is the binary equivalent of 233.
References:
1: Decimal to Binary Converter - RapidTables 2: How to Convert Decimal to Binary - wikiHow 3: Decimal to Binary Conversion Methods - GeeksforGeeks
NEW QUESTION # 28
Which statement accurately describes an omnidirectional antenna?
- A. Radiates almost equal power in all directions in the Vertical Plane.
- B. Radiates more power in a specific angle and less power in others.
- C. Radiates equal power in all directions in the Elevation Plane.
- D. Radiates almost equal power in all directions in the Horizontal Plane.
Answer: D
Explanation:
Explanation
An omnidirectional antenna is an antenna that radiates almost equal power in all directions in the horizontal plane, which is also called the azimuth plane1. This means that the antenna has a 360-degree coverage in the horizontal plane, but a narrow coverage in the vertical plane, which is also called the elevation plane2. An omnidirectional antenna is suitable for indoor environments where the clients are distributed around the access point3. Therefore, statement D accurately describes an omnidirectional antenna. Statements A, B, and C are incorrect because they describe different types of antennas. Statement A describes an isotropic antenna, which is a theoretical antenna that radiates equal power in all directions in both the horizontal and vertical planes.
Statement B describes a vertical antenna, which is an antenna that radiates almost equal power in all directions in the vertical plane, but a narrow coverage in the horizontal plane. Statement C describes a directional antenna, which is an antenna that radiates more power in a specific angle and less power in others, creating a focused beam of radio waves. References: 1: Aruba Certified Network Technician (ACNT) Study Guide, page
872: Aruba Certified Network Technician (ACNT) Study Guide, page 883: Aruba Certified Network Technician (ACNT) Study Guide, page 89. : Aruba Certified Network Technician (ACNT) Study Guide, page
87. : Aruba Certified Network Technician (ACNT) Study Guide, page 88. : Aruba Certified Network Technician (ACNT) Study Guide, page 89.
NEW QUESTION # 29
Before routers forward unicast packets, what information is compared with the unicast routing table entries?
- A. The destination address of the Ethernet header.
- B. The inbound port the packet is received in.
- C. The source address of the IP header.
- D. The destination address of the IP header.
- E. The source address of the Ethernet header.
Answer: D
Explanation:
Explanation
Before routers forward unicast packets, they compare the destination address of the IP header with the unicast routing table entries. This is because routers use the destination IP address to determine the next hop or outgoing interface for the packet. Routers do not care about the source address of the IP header or the Ethernet header, as they are not relevant for forwarding decisions. The inbound port the packet is received in is also not important, as routers use the routing table to make forwarding decisions, not the interface information.
Therefore, the correct answer is
C: Referenceshttps://networklessons.com/cisco/ccie-routing-switching/unicast-reverse-path-forwarding-urpf
https://www.killtest.com/news_Aruba_Certified_Network_Technician_Exam_ACNT_HPE3-U01_Exam_Questi
NEW QUESTION # 30
Which commands can you use to save the switch configuration changes, so they survive a switch reboot?
(Select two.)
- A. write memory
- B. copy running-config checkpoint backup
- C. store memory
- D. copy running-config checkpoint startup-config
- E. save memory
Answer: C,D
NEW QUESTION # 31
Whichtraffic type is used for one-to-one communication?
- A. Broadcast
- B. Unicast
- C. Multicast
- D. Anycast
Answer: B
Explanation:
Explanation
https://www.omnisecu.com/tcpip/ipv6/unicast-multicast-anycast-types-of-network-communication-in-ipv6.php
NEW QUESTION # 32
What is the decimal equivalent of the binary number 10001010?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 33
Which dual-band IEEE WLAN standard provides up to 4.8 Gbps of theoretical data rate?
- A. 802.1 In
- B. 802.11 ac
- C. 802.11 be
- D. 802.1 lax
Answer: C
Explanation:
Explanation
https://ieeexplore.ieee.org/iel7/6287639/8948470/09090146.pdf
NEW QUESTION # 34
Which commands are required to configure interfaces 1 /1/1 and 1 /1/2 as VLAN 10 access ports in ArubaOS-CX switches?
- A. Option B
- B. Option A
- C. Option C
- D. Option D
Answer: A
Explanation:
Explanation
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
NEW QUESTION # 35
What do the digits in the ArubaOS-CX switch interface numbering represent?
- A. Stack/Member/Port
- B. Member/Slot/Port
- C. Module/Slot/Port
- D. Slot/Member/Port
Answer: A
NEW QUESTION # 36
Which statements are true about a router? (Select two.)
- A. They analyze source addresses to learn paths.
- B. They are considered layer three devices.
- C. They are considered layer two devices.
- D. They utilize protocols to learn all possible paths.
- E. They are considered layer four devices.
Answer: A,B
NEW QUESTION # 37
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