[H3CNE Cert] H3CNE Certification Exam
Guide
**Question 1. Which OSI layer is responsible for end‑to‑end transport services such as TCP and
UDP?**
A) Physical
B) Data Link
C) Network
D) Transport
Answer: D
Explanation: The Transport layer (Layer 4) provides end‑to‑end communication services,
encapsulating data into segments for TCP and UDP.
**Question 2. In a star topology, what is the primary disadvantage compared to a mesh
topology?**
A) Higher cabling cost
B) Single point of failure at the central hub
C) Complex routing algorithms
D) Increased broadcast traffic
Answer: B
Explanation: All devices connect to a central hub or switch; if it fails, the entire network
becomes inoperative, making it a single point of failure.
**Question 3. Which of the following media provides the highest bandwidth among the listed
options?**
A) Category‑5e twisted pair
B) Single‑mode optical fiber
C) Coaxial cable
D) Wireless 802.11ac
, [H3CNE Cert] H3CNE Certification Exam
Guide
Answer: B
Explanation: Single‑mode fiber supports up to 10 Gbps and beyond over long distances,
surpassing the bandwidth of the other media listed.
**Question 4. In Ethernet, what does the CSMA/CD algorithm detect?**
A) Duplicate IP addresses
B) Collisions on the shared medium
C) Invalid MAC addresses
D) Looped frames in a switch
Answer: B
Explanation: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) monitors the
medium for collisions and initiates retransmission.
**Question 5. Which command on an H3C device displays the current routing table?**
A) display ip routing-table
B) show routes
C) display route‑summary
D) get ip route
Answer: A
Explanation: `display ip routing-table` is the standard H3C CLI command to view the IPv4 routing
table.
**Question 6. In H3C’s Comware, which mode allows you to modify interface parameters?**
A) User view
B) System view
C) Interface view
, [H3CNE Cert] H3CNE Certification Exam
Guide
D) Configuration view
Answer: C
Explanation: Interface view is entered with `interface GigabitEthernet 0/0/1` and permits
configuration of interface‑specific settings.
**Question 7. Which file extension denotes a Comware system image?**
A) .cfg
B) .bin
C) .img
D) .exe
Answer: B
Explanation: Comware system images are stored as binary files with the `.bin` extension.
**Question 8. What is the default administrative distance of OSPF routes in H3C devices?**
A) 1
B) 90
C) 110
D) 120
Answer: C
Explanation: OSPF has an administrative distance of 110, which determines its preference over
other routing protocols.
**Question 9. Which VLAN tagging protocol is defined by IEEE 802.1Q?**
A) ISL
B) QinQ
, [H3CNE Cert] H3CNE Certification Exam
Guide
C) 802.1Q
D) VTP
Answer: C
Explanation: IEEE 802.1Q adds a 4‑byte tag to Ethernet frames to identify VLAN membership.
**Question 10. In STP, which bridge becomes the Root Bridge by default?**
A) The bridge with the highest MAC address
B) The bridge with the lowest bridge ID (priority + MAC)
C) The bridge with the most ports
D) The first bridge to receive a BPDU
Answer: B
Explanation: STP elects the bridge with the lowest bridge ID, which consists of priority (default
32768) followed by the MAC address.
**Question 11. What is the purpose of LACP in link aggregation?**
A) To encrypt aggregated links
B) To dynamically negotiate the number of active member links
C) To assign IP addresses to a port channel
D) To provide load‑balancing for multicast traffic only
Answer: B
Explanation: LACP (Link Aggregation Control Protocol) automatically detects and bundles
multiple physical links into a single logical link, negotiating active members.
**Question 12. Which IPv4 address class provides 16 million host addresses?**
A) Class A
Guide
**Question 1. Which OSI layer is responsible for end‑to‑end transport services such as TCP and
UDP?**
A) Physical
B) Data Link
C) Network
D) Transport
Answer: D
Explanation: The Transport layer (Layer 4) provides end‑to‑end communication services,
encapsulating data into segments for TCP and UDP.
**Question 2. In a star topology, what is the primary disadvantage compared to a mesh
topology?**
A) Higher cabling cost
B) Single point of failure at the central hub
C) Complex routing algorithms
D) Increased broadcast traffic
Answer: B
Explanation: All devices connect to a central hub or switch; if it fails, the entire network
becomes inoperative, making it a single point of failure.
**Question 3. Which of the following media provides the highest bandwidth among the listed
options?**
A) Category‑5e twisted pair
B) Single‑mode optical fiber
C) Coaxial cable
D) Wireless 802.11ac
, [H3CNE Cert] H3CNE Certification Exam
Guide
Answer: B
Explanation: Single‑mode fiber supports up to 10 Gbps and beyond over long distances,
surpassing the bandwidth of the other media listed.
**Question 4. In Ethernet, what does the CSMA/CD algorithm detect?**
A) Duplicate IP addresses
B) Collisions on the shared medium
C) Invalid MAC addresses
D) Looped frames in a switch
Answer: B
Explanation: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) monitors the
medium for collisions and initiates retransmission.
**Question 5. Which command on an H3C device displays the current routing table?**
A) display ip routing-table
B) show routes
C) display route‑summary
D) get ip route
Answer: A
Explanation: `display ip routing-table` is the standard H3C CLI command to view the IPv4 routing
table.
**Question 6. In H3C’s Comware, which mode allows you to modify interface parameters?**
A) User view
B) System view
C) Interface view
, [H3CNE Cert] H3CNE Certification Exam
Guide
D) Configuration view
Answer: C
Explanation: Interface view is entered with `interface GigabitEthernet 0/0/1` and permits
configuration of interface‑specific settings.
**Question 7. Which file extension denotes a Comware system image?**
A) .cfg
B) .bin
C) .img
D) .exe
Answer: B
Explanation: Comware system images are stored as binary files with the `.bin` extension.
**Question 8. What is the default administrative distance of OSPF routes in H3C devices?**
A) 1
B) 90
C) 110
D) 120
Answer: C
Explanation: OSPF has an administrative distance of 110, which determines its preference over
other routing protocols.
**Question 9. Which VLAN tagging protocol is defined by IEEE 802.1Q?**
A) ISL
B) QinQ
, [H3CNE Cert] H3CNE Certification Exam
Guide
C) 802.1Q
D) VTP
Answer: C
Explanation: IEEE 802.1Q adds a 4‑byte tag to Ethernet frames to identify VLAN membership.
**Question 10. In STP, which bridge becomes the Root Bridge by default?**
A) The bridge with the highest MAC address
B) The bridge with the lowest bridge ID (priority + MAC)
C) The bridge with the most ports
D) The first bridge to receive a BPDU
Answer: B
Explanation: STP elects the bridge with the lowest bridge ID, which consists of priority (default
32768) followed by the MAC address.
**Question 11. What is the purpose of LACP in link aggregation?**
A) To encrypt aggregated links
B) To dynamically negotiate the number of active member links
C) To assign IP addresses to a port channel
D) To provide load‑balancing for multicast traffic only
Answer: B
Explanation: LACP (Link Aggregation Control Protocol) automatically detects and bundles
multiple physical links into a single logical link, negotiating active members.
**Question 12. Which IPv4 address class provides 16 million host addresses?**
A) Class A
