NET1L - Lesson 4 (Physical Layer)

Provides the physical topology of the system.

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Physical Layer is the first layer in the OSI Reference Model.

• True

• False

Communication starts at the 7th Layer (Application).

• True

• False

Tangible parts that we can see which enables communication.

- Ex: end devices, intermediary devices

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Before any network communications can occur, a physical connection is not needed to a local network for it to be established.

• True

• False

A PHYSICAL connection can be a ______ connection using a cable or a ______ connection using radio waves.

• wired

• wireless

• data

• user

A _______________ connects a device to the network.

• Network Interface Card (NIC)

• Physical Port

• Interfaces

Some devices may have just one NIC, while others may have multiple NICs (Wired and/or Wireless, for example).

• True

• False

What are the components of an access point?

• Wireless antennas

• Several ethernet switchports

• Internet port

• LAN port

_____________ are used for a wired connection, whereas ___________________ are used for wireless.

• Ethernet NICs, Wireless local area network (WLAN) NICs

• Wireless local area network (WLAN) NICs, Ethernet NICs