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HP HPE3-U01 Practice Exam Questions & Answers
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· Last reviewed: October 12, 2026
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Exam Facts
HP HPE3-U01 Exam Details
Key details for this exam, checked against the published exam outline
60
Practice Questions (Our Bank)
90 minutes
Exam Duration
- Exam Code
- HPE3-U01
- Full Name
- Aruba Certified Network Technician Exam
- Issuing Body
- HP Aruba
- Question Format (Our Bank)
- Multiple Choice
Practice Questions
Free HPE3-U01 Practice Questions
Each question shows the correct answer and an explanation of why it is right
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How many addresses does the 255.255.252.0 provide?
Correct Answer:
D
Explanation
The 2.4 GHz Wi-Fi band uses channels spaced 5 MHz apart, but each channel occupies 22 MHz of spectrum. Channels 1, 6, and 11 are the only three non-overlapping channels in this band. This spacing ensures minimal interference between access points. Any other combination like 1, 5, 9 or 2, 7, 12 would have overlapping frequencies that degrade performance. For optimal network deployment, you should use only these three non-overlapping channels.
Which dual-band IEEE WLAN standard provides up to 4.8 Gbps of theoretical data rate?
Correct Answer:
D
Explanation
https://ieeexplore.ieee.org/iel7/6287639/8948470/09090146.pdf
Why do clients run the Address Resolution Protocol (ARP)?
Correct Answer:
B
Which configurable switchport feature makes collisions impossible to occur?
Correct Answer:
C
Explanation
The subnet mask 255.255.252.0 uses 22 bits for the network portion, leaving 10 bits for host addresses. Two bits raised to the 10th power equals 1024 total addresses. This includes both the network address and broadcast address, which cannot be assigned to devices. So while you get 1024 addresses, only 1022 are usable for actual hosts. Other options like 512 or 2048 come from counting 9 or 11 host bits instead of 10.
Which protocol provides frame delivery using physical addressing and error detection using frame check sequence?
Correct Answer:
A
Explanation
The MAC table, also called the MAC address table or forwarding table, stores the Layer 2 addresses of neighboring devices. Switches populate this table by learning the source MAC addresses of frames they receive on each port. This allows switches to forward frames to the correct port without flooding. Routing tables handle Layer 3 addresses while ARP tables map IP addresses to MAC addresses, so those are not the answer here.
What is the goal of the TCP three-way handshake?
Correct Answer:
C
Explanation
Collisions occur when two devices transmit simultaneously on the same medium. Wi-Fi is a shared wireless medium where all devices in a coverage area contend for channel access using CSMA/CA. Multiple devices often attempt transmission at the same time, causing frame collisions. Wired Ethernet connections are typically point-to-point or use switches that prevent collisions by creating separate collision domains. The inherent nature of wireless transmission makes collisions far more likely than on properly switched wired networks.
Question 7
Which command should you enter to access the second interface of a one-rack-unit standalone ArubaOS-CX switch?
Correct Answer:
C
Full Access
Get the complete HPE3-U01 question set
- 60 questions covering all exam domains
- Correct answers with explanations, like the free questions above
- PDF and online practice test
- 90 days of free updates
Domain 1: Network Fundamentals
9%
Covers the basics of networking including LAN and WAN concepts. Learn how different media types carry network signals and how numbering systems work in networking contexts.
Domain 2: Network Communications Model
20%
Focuses on the OSI model layers and how data moves through networks via encapsulation and headers. Understand TCP handshakes, common protocols from Layer 2 to Layer 7, and services like DHCP and DNS.
Domain 3: Networking Devices
18%
Explores switches, routers, multilayer switches, and access points. Gain hands-on familiarity with Aruba OS-CX show commands and basic configuration tasks on network devices.
Sample question from this domain above:
Q5
Domain 4: L2 Switching
12%
Examines how switches forward frames using MAC addresses and learn to configure VLANs properly. Understand collision and broadcast domains, and how to avoid creating loops in switched networks.
Sample question from this domain above:
Q2
Domain 5: Internetwork Communication
9%
Covers IP addressing schemes and how routers forward traffic between networks using default gateways. Learn how traffic moves between VLANs and the basics of IPv6 addressing.
Sample question from this domain above:
Q4
Domain 6: WLAN Fundamentals
23%
The largest exam domain, covering 802.11 standards, RF signal propagation, and channel selection. Study antenna types, interference patterns, roaming behavior, and the wireless frame formats you will see in real deployments.
Sample questions from this domain above:
Q1Q3Q6
Domain 7: Deploying WLANs with Central
9%
Focuses on Aruba Central as a cloud management platform for wireless networks. Learn how to provision SSIDs, apply security policies, and understand how Central communicates with access points.
FAQ
HPE3-U01 Exam FAQ
Common questions about the exam itself
What does the HPE3-U01 exam assess and who should take it?
HPE3-U01 validates your ability to deploy, configure, and troubleshoot Aruba networking solutions. It is designed for network technicians and IT professionals who support Aruba infrastructure, whether they work with wired switches and routers or wireless access points.
How does WLAN Fundamentals fit into the HPE3-U01 exam?
WLAN Fundamentals is the heaviest weighted domain at 23 percent of the exam. It covers 802.11 standards, radio frequency propagation, channel planning, interference, antenna types, and wireless roaming behavior.
What is the difference between local and server-based management in Aruba networks?
Local management applies configuration directly to a device at the console or via SSH. Server-based management uses Aruba Central, a cloud platform that manages multiple devices from a single location and applies policies across your entire network.
Why are L2 loops a problem and how do you prevent them?
L2 loops occur when multiple paths exist between switches, causing frames to circulate indefinitely and clogging the network. Spanning Tree Protocol prevents loops by blocking redundant paths while keeping them available as backup routes.
How do you calculate IP subnets and why does it matter for the HPE3-U01 exam?
Subnetting breaks a large IP network into smaller pieces. You need to convert between decimal and binary, identify network and broadcast addresses, and understand how default gateways route traffic between subnets on different VLANs.
What background do you need before attempting HPE3-U01?
You should have foundational knowledge of networking concepts such as the OSI model, basic IP addressing, and how switches forward frames. Some hands-on experience with network devices or wireless access points is helpful but not formally required.
How much time should I allow to prepare for HPE3-U01?
Most candidates spend four to eight weeks preparing if they have basic networking knowledge. The WLAN domain often requires the most study time because it covers radio frequency concepts that are new to many network technicians.
What happens on exam day for HPE3-U01?
You will sit a 90-minute proctored exam with 60 multiple-choice and scenario-based questions. You can take it at a Pearson VUE test centre or online with remote proctoring, and you will receive your score immediately after completion.
How long does the Aruba Certified Network Technician certification stay valid?
Certification validity depends on HPE policy, which you should confirm on the official exam page. Some certifications expire after three years and require renewal through retesting or continuing education credits.
What exam comes after HPE3-U01 in the Aruba certification path?
HPE3-U01 is the entry-level Aruba certification. After passing it, candidates typically pursue intermediate certifications like the Aruba Certified Switching Associate or Aruba Certified WLAN Specialist, depending on their career focus.
