QUIZ 2

Physical Layer Standards address three functional areas:

Concentrate wireless signals from users and connect to the existing copper-based network infrastructurE

• Wireless Access Point (AP)

• Wireless NIC Adapters

- Provide wireless communications capability to network host

• Wireless Access Point (AP)

• Wireless NIC Adapters

s responsible for communications between end-device network interface cards. • It allows upper layer protocols to access the physical layer media and encapsulates Layer 3 packets (IPv4 and IPv6) into Layer 2 Frames.

• The Data Link layer

• . Logical Link Control (LLC) and Media Access Control (MAC).

The Data Link Layer consists of two sublayers

communicates between the networking software at the upper layers and the device hardware at the lower layers.

• Logical Link Control (LLC)

• Media Access Control (MAC)

The Data Link Layer consists of two sublayers

r is responsible for data encapsulation and media access control.

• Logical Link Control (LLC)

• Media Access Control (MAC)

– shows physical connections and how devices are interconnected.

• Physical topology

• Logical topology –

• Point-to-point

• Hub and spoke

– identifies the virtual connections between devices using device interfaces and IP addressing schemes.

• Physical topology

• Logical topology –

• Point-to-point

• Hub and spoke

– the simplest and most common WAN topology. Consists of a permanent link between two endpoints

• Physical topology

• Logical topology –

• Point-to-point

• Hub and spoke

– similar to a star topology where a central site interconnects branch sites through point-to-point links.

• Physical topology

• Logical topology –

• Point-to-point

• Hub and spoke