Layer 1 Physical Flashcards
What is the layer of the OSI model that is responsible for the transmission and receipt of signals from another node?
Layer 1-Physical
What are the two types of physical transmission media?
Cabled and Wireless
What kind of transmission media is a physical signal conductor between nodes such as copper of fiber optic cable?
Cabled
What transmission media uses free space between nodes such as microwave or radio?
Wireless
What three things does the physical layer specify?
Physical topology, physical interface, signaling.
What is the layout of nodes and links as established by the transmission media?
Physical topology
What is an area of a larger network called?
A segment
At the physical layer, what defines a segment?
Where all the. nodes share access to the same media
Why is a network typically divided into segments?
To cope with physical restrictions of the network media, to improve performance or security
What term defines the mechanical specifications for the network medium?
Physical interface
What are some examples of physical interface?
Cable/radio transceiver specifications, the medium connector and pin-out details
What is the process of transmitting and receiving encoded data over a network medium?
Signaling
What devices operate at the physical layer?
Transceiver, repeater, hub, media converters, modems
What part of the network interface sends and receives signals over the network media?
Transceiver
What device amplifies electronic signals to extend the maximum allowable distance for a media type?
Repeater
