HPE3-U01 HPE Network Technician Exam Practice Questions
Prepare for HPE3-U01 with more than an answer.
- Time limit
- 90 minutes
- Questions on the exam
- 60
- Passing score
- 73%
- Level
- Technician (entry-level)
Domains covered on the exam 7
- Network Fundamentals9%
- Network Communications Model20%
- Networking Devices18%
- L2 Switching12%
- Internetwork Communication9%
- WLAN Fundamentals23%
- Deploying WLANs with HPE Aruba Networking Central9%
- 1
As data moves down the OSI model from the Application layer to the Physical layer, headers are added at various stages. What is the correct sequence of Protocol Data Unit (PDU) names during this encapsulation process?
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Correct answer: B
During encapsulation, upper-layer Data is passed to the Transport layer and becomes a Segment (Layer 4). It moves to the Network layer to become a Packet (Layer 3), then to the Data Link layer to become a Frame (Layer 2), and finally is transmitted as Bits (Layer 1) across the Physical medium.
- 2
A user reports they cannot access the internal corporate intranet portal via their web browser. A network technician successfully pings the portal's IP address from the user's workstation and resolves its DNS name correctly. However, a TCP connection attempt to port 80 fails. Based on the OSI model, at which layer is this issue most likely occurring?
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Correct answer: C
Because ICMP (ping) and DNS are working, Layers 1 through 3 are functioning correctly (routing and addressing are valid). The failure of the TCP connection on port 80 indicates an issue at the Transport layer (Layer 4, such as an ACL blocking port 80) or the Application layer (Layer 7, such as the web server service being down).
- 3
A financial services company has deployed a new multi-tier application. Employees complain that the application frequently drops sessions, requiring them to log in repeatedly.
The network team captures traffic and observes the following:
- ARP resolves the MAC address correctly.
- The initial TCP 3-way handshake completes successfully.
- Application data transfers begin, but randomly, the server sends TCP RST (Reset) packets to the client, terminating the connection unexpectedly.
Using the OSI model as a troubleshooting framework, how should the engineer classify and approach this problem?
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Correct answer: C
The OSI model dictates that if higher-layer functions (like a TCP handshake at Layer 4) are successful, the lower layers (Layers 1-3) are functioning correctly. Since the handshake completes and data transfer begins before a TCP RST is sent, the issue lies at Layer 4 (e.g., stateful firewall timeout) or higher (e.g., application crashing and tearing down the socket).
sequenceDiagram Client->>Server: SYN Server->>Client: SYN-ACK Client->>Server: ACK (Layer 1-4 OK) Client->>Server: Application Data (HTTP POST) Server-->>Client: TCP RST (Connection forcibly closed) - 4
Which of the following common networking services is responsible for securely logging into remote network devices using encrypted communications, typically operating on TCP port 22?
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Correct answer: C
Secure Shell (SSH) is a cryptographic network protocol operating on TCP port 22, used for secure remote login and command execution on network devices. FTP (port 21) and HTTP (port 80) transmit data in plaintext.
- 5
A manufacturing company is upgrading its factory floor network. The environment contains heavy machinery that generates significant electromagnetic interference (EMI). The network links must connect switches that are 250 meters apart. Which media type is the optimal choice for this scenario?
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Correct answer: C
Fiber optic cabling is completely immune to electromagnetic interference (EMI) because it uses light to transmit data rather than electrical signals. Furthermore, multimode fiber easily supports the 250-meter distance requirement, whereas copper Ethernet (UTP/STP) is limited to 100 meters per segment.
- 6
A university is deploying a new digital signage system across its campus. The central server must send the exact same high-definition video stream to 50 specific digital displays simultaneously without overwhelming the campus network core. Which transmission method should the network administrator utilize?
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Correct answer: D
Multicast is a one-to-many communication model where a single stream of data is sent from a source and replicated by the network infrastructure only to the specific devices (the multicast group) that have requested it. This prevents the server from having to send 50 individual Unicast streams, preserving significant bandwidth.
