2.3 Given a scenario, select and configure wireless devices and technologies
Network Types
📘CompTIA Network+ (N10-009)
Point-to-Point Wireless Networks (P2P)
Definition
A Point-to-Point (P2P) wireless network is a type of network where two devices are directly connected to each other over a wireless link. Unlike networks where many devices communicate with a central hub (like Wi-Fi access points in offices), P2P is strictly one-to-one.
Think of it as a dedicated, private link between two network devices.
Key Characteristics
- Direct Connection
- Only two devices communicate with each other.
- No other devices share the link.
- High Speed and Reliability
- Since the connection is direct, data travels faster and with lower delay.
- There is no interference from other devices (except physical obstructions or weather if outdoors).
- Fixed Locations
- Usually, the devices are in specific locations because P2P links require line-of-sight (especially for wireless like microwave or laser connections).
- Antennas are often aligned precisely to maintain the connection.
- Long-Distance Capability
- P2P links can cover long distances (sometimes several kilometers).
- This makes them useful for connecting two distant parts of a network where running cables is impractical.
Common Uses in IT Networks
- Connecting Two Branch Offices
- A P2P wireless link can connect two office buildings to share data and applications securely.
- Connecting Remote Network Devices
- Example: Linking a remote server farm to a central data center without laying physical cables.
- Backhaul for Wireless Networks
- P2P links are often used to carry traffic between access points or cell towers in larger wireless networks.
Advantages
- Fast and reliable connection because there is no extra traffic from other devices.
- Long-distance coverage, reducing the need for expensive cabling.
- Simple setup when only two devices need to communicate.
- Secure, since the link is private between two endpoints.
Disadvantages
- Only supports two devices. You cannot expand the network easily.
- Requires line-of-sight for most wireless technologies (like microwave or laser).
- Cost can be high if specialized antennas or equipment are needed for long distances.
Common Technologies Used
- Microwave Wireless Links – Often used for very long distances.
- Laser Links / Infrared – Line-of-sight, used in specific situations.
- Dedicated Wireless Bridges – Devices designed for connecting two networks wirelessly.
Exam Tips
- If a question mentions:
- “Connecting exactly two networks or devices” → think Point-to-Point.
- “Direct wireless link between two locations” → P2P.
- Keywords to remember for the exam:
- One-to-one connection
- High speed / low latency
- Long distance link
- Line-of-sight requirement
- Used for connecting network devices directly
✅ Summary in Simple Terms:
A Point-to-Point wireless network is a private, direct connection between two devices. It’s fast, reliable, and ideal for connecting two networks over long distances, but it only works for two devices and usually needs a clear path between them.
