[H3CA] H3C Architect Certification Exam
Preparation
**Question 1.** In a three‑tier enterprise design, which layer is primarily responsible for
providing high‑speed inter‑site connectivity?
A) Access
B) Distribution
C) Core
D) Edge
Answer: C
Explanation: The Core layer aggregates traffic from distribution layers and provides
high‑capacity backbone links between sites, minimizing latency and maximizing throughput.
**Question 2.** Which architecture replaces traditional three‑tier designs with leaf switches
connecting to spine switches in a fabric that scales linearly?
A) Hierarchical model
B) Ring topology
C) Spine‑leaf architecture
D) Mesh network
Answer: C
Explanation: Spine‑leaf provides consistent latency and bandwidth by ensuring every leaf has a
direct, equal‑cost path to each spine, ideal for modern data centers.
**Question 3.** Service‑Oriented Architecture (SOA) in network design most directly influences
which of the following?
A) Physical cable type selection
B) Placement of firewalls
C) Logical grouping of services via VLANs and VRFs
D) Power redundancy schemes
, [H3CA] H3C Architect Certification Exam
Preparation
Answer: C
Explanation: SOA emphasizes decoupling services; in networking this translates to logical
segregation using VLANs, VRFs, and policy‑based routing.
**Question 4.** When using H3C IRF (Intelligent Resilient Framework) to eliminate single points
of failure, what is the minimum number of physical devices required to form an IRF group?
A) One
B) Two
C) Three
D) Four
Answer: B
Explanation: IRF can virtualize two or more physical switches into a single logical device,
providing redundancy and simplified management.
**Question 5.** Which protocol provides rapid fault detection in sub‑second intervals, often
used in conjunction with OSPF or BGP?
A) STP
B) BFD
C) LACP
D) LLDP
Answer: B
Explanation: Bidirectional Forwarding Detection (BFD) sends lightweight packets to detect link
failures quickly, enabling fast convergence for routing protocols.
**Question 6.** In a campus network that unifies wired and wireless infrastructures, which H3C
feature enables shared policy enforcement across both mediums?
A) Smart Link
, [H3CA] H3C Architect Certification Exam
Preparation
B) WLAN Controller Integration (WCI)
C) Unified Access Control (UAC)
D) IRF
Answer: C
Explanation: Unified Access Control allows administrators to apply the same security and QoS
policies to wired and wireless endpoints.
**Question 7.** Which VRRP mode provides load balancing across multiple virtual routers
rather than a single active router?
A) VRRPv2
B) VRRPv3 with preempt
C) VRRP with virtual MAC rotation
D) VRRP with load‑balancing (VRRP LB)
Answer: D
Explanation: VRRP load‑balancing distributes traffic among all routers in the VRRP group,
improving utilization and redundancy.
**Question 8.** In MSTP, what does the “M” stand for, and why is it preferred over traditional
STP in large campus networks?
A) Multiple; it supports multiple spanning trees for traffic segregation.
B) Managed; it allows centralized controller configuration.
C) Modular; it can be upgraded without downtime.
D) Multi‑domain; it isolates broadcast domains.
Answer: A
Explanation: Multiple Spanning Tree Protocol (MSTP) enables several spanning‑tree instances,
each mapped to a VLAN, optimizing path selection and reducing blocking ports.
, [H3CA] H3C Architect Certification Exam
Preparation
**Question 9.** Which of the following best describes a “policy‑driven segmentation”
approach?
A) Assigning IP subnets based on department location.
B) Using ACLs attached to physical ports only.
C) Dynamically placing users into groups that receive specific QoS and security policies.
D) Implementing static VLANs per floor.
Answer: C
Explanation: Policy‑driven segmentation uses identity‑based or role‑based groups to apply
consistent policies regardless of physical topology.
**Question 10.** When designing OSPF for a multi‑area environment, which statement is true
regarding route summarization?
A) Summarization can only be performed on ABR routers.
B) Summarization is mandatory for every area.
C) Summarization must be done on ASBR routers only.
D) Summarization is not supported in OSPFv3.
Answer: A
Explanation: Area Border Routers (ABRs) can summarize inter‑area routes to reduce LSDB size
and limit routing updates.
**Question 11.** In IS‑IS, what is the purpose of the “Level‑2” routers?
A) They operate only within a single area.
B) They provide backbone connectivity between multiple areas.
C) They replace OSPF’s DR/BDR election.
D) They handle only IPv6 routes.
Preparation
**Question 1.** In a three‑tier enterprise design, which layer is primarily responsible for
providing high‑speed inter‑site connectivity?
A) Access
B) Distribution
C) Core
D) Edge
Answer: C
Explanation: The Core layer aggregates traffic from distribution layers and provides
high‑capacity backbone links between sites, minimizing latency and maximizing throughput.
**Question 2.** Which architecture replaces traditional three‑tier designs with leaf switches
connecting to spine switches in a fabric that scales linearly?
A) Hierarchical model
B) Ring topology
C) Spine‑leaf architecture
D) Mesh network
Answer: C
Explanation: Spine‑leaf provides consistent latency and bandwidth by ensuring every leaf has a
direct, equal‑cost path to each spine, ideal for modern data centers.
**Question 3.** Service‑Oriented Architecture (SOA) in network design most directly influences
which of the following?
A) Physical cable type selection
B) Placement of firewalls
C) Logical grouping of services via VLANs and VRFs
D) Power redundancy schemes
, [H3CA] H3C Architect Certification Exam
Preparation
Answer: C
Explanation: SOA emphasizes decoupling services; in networking this translates to logical
segregation using VLANs, VRFs, and policy‑based routing.
**Question 4.** When using H3C IRF (Intelligent Resilient Framework) to eliminate single points
of failure, what is the minimum number of physical devices required to form an IRF group?
A) One
B) Two
C) Three
D) Four
Answer: B
Explanation: IRF can virtualize two or more physical switches into a single logical device,
providing redundancy and simplified management.
**Question 5.** Which protocol provides rapid fault detection in sub‑second intervals, often
used in conjunction with OSPF or BGP?
A) STP
B) BFD
C) LACP
D) LLDP
Answer: B
Explanation: Bidirectional Forwarding Detection (BFD) sends lightweight packets to detect link
failures quickly, enabling fast convergence for routing protocols.
**Question 6.** In a campus network that unifies wired and wireless infrastructures, which H3C
feature enables shared policy enforcement across both mediums?
A) Smart Link
, [H3CA] H3C Architect Certification Exam
Preparation
B) WLAN Controller Integration (WCI)
C) Unified Access Control (UAC)
D) IRF
Answer: C
Explanation: Unified Access Control allows administrators to apply the same security and QoS
policies to wired and wireless endpoints.
**Question 7.** Which VRRP mode provides load balancing across multiple virtual routers
rather than a single active router?
A) VRRPv2
B) VRRPv3 with preempt
C) VRRP with virtual MAC rotation
D) VRRP with load‑balancing (VRRP LB)
Answer: D
Explanation: VRRP load‑balancing distributes traffic among all routers in the VRRP group,
improving utilization and redundancy.
**Question 8.** In MSTP, what does the “M” stand for, and why is it preferred over traditional
STP in large campus networks?
A) Multiple; it supports multiple spanning trees for traffic segregation.
B) Managed; it allows centralized controller configuration.
C) Modular; it can be upgraded without downtime.
D) Multi‑domain; it isolates broadcast domains.
Answer: A
Explanation: Multiple Spanning Tree Protocol (MSTP) enables several spanning‑tree instances,
each mapped to a VLAN, optimizing path selection and reducing blocking ports.
, [H3CA] H3C Architect Certification Exam
Preparation
**Question 9.** Which of the following best describes a “policy‑driven segmentation”
approach?
A) Assigning IP subnets based on department location.
B) Using ACLs attached to physical ports only.
C) Dynamically placing users into groups that receive specific QoS and security policies.
D) Implementing static VLANs per floor.
Answer: C
Explanation: Policy‑driven segmentation uses identity‑based or role‑based groups to apply
consistent policies regardless of physical topology.
**Question 10.** When designing OSPF for a multi‑area environment, which statement is true
regarding route summarization?
A) Summarization can only be performed on ABR routers.
B) Summarization is mandatory for every area.
C) Summarization must be done on ASBR routers only.
D) Summarization is not supported in OSPFv3.
Answer: A
Explanation: Area Border Routers (ABRs) can summarize inter‑area routes to reduce LSDB size
and limit routing updates.
**Question 11.** In IS‑IS, what is the purpose of the “Level‑2” routers?
A) They operate only within a single area.
B) They provide backbone connectivity between multiple areas.
C) They replace OSPF’s DR/BDR election.
D) They handle only IPv6 routes.
