N10-009 Question 166
Single answerNetwork types: Mesh networks, Ad hoc, Point to point, InfrastructureA construction company is deploying temporary network connectivity at a remote job site. There is no existing cabling, and workers need reliable wireless access for tablets across several trailers and outdoor work areas. The IT team also wants the network to keep working if one wireless node fails or loses power. Which network type is the BEST fit for this requirement?
- A
Ad hoc network
- B
Point-to-point network
- C
Infrastructure network
- D
Mesh network
Show answer and explanation
Correct answer: D
Explanation
The key requirement in this scenario is fault tolerance in a temporary wireless deployment with no existing cabling. That points to a mesh network. Mesh topologies are commonly used when extending coverage over a broad area is necessary and when resiliency is important because nodes can provide alternate paths for traffic. By contrast, ad hoc networking is peer-to-peer and generally intended for small, simple, short-term device groupings rather than managed site-wide access. Point-to-point describes a dedicated connection between two endpoints, which is too limited here. Infrastructure mode is the standard WLAN model using access points and is highly common, but the scenario specifically emphasizes continued operation after node failure, which is a defining practical advantage of mesh designs. This aligns with common networking best practices and vendor documentation for wireless mesh deployments in environments where cabling is difficult or impractical.
- A. Incorrect.
An ad hoc network allows devices to connect directly to one another without a central access point, which can be useful for small, temporary peer-to-peer communication. However, it is not the best choice for a larger job site that needs broad coverage, centralized access for many client devices, and resilience if one node fails. Ad hoc networks are typically limited in scalability, management, and fault tolerance.
- B. Incorrect.
A point-to-point network is designed to connect exactly two endpoints, such as two buildings linked by a wireless bridge or a WAN circuit between two sites. It does not match this scenario because the company needs coverage across multiple trailers and outdoor areas for many users, not just a dedicated link between two locations.
- C. Incorrect.
An infrastructure network uses centralized devices such as wireless access points to provide client connectivity. This is common in offices and can support many clients well, but by itself it does not inherently provide the self-healing, multiple-path redundancy described in the scenario. If a single access point or uplink fails, clients depending on it may lose connectivity unless additional design features are added.
- D. Correct.
A mesh network is the best fit because multiple wireless nodes can interconnect and forward traffic for one another, creating redundant paths. This makes mesh networking well suited for temporary or hard-to-cable environments such as construction sites, warehouses, campuses, or outdoor areas. If one node fails, traffic can often reroute through another node, improving availability and coverage.