12 Questions
What does the Logical Link Control (LLC) sublayer provide in the data-link layer?
Independence from existing technologies
How are MAC addresses used in the data-link layer?
To maintain a table of device addresses
What is the purpose of the Media Access Control (MAC) sublayer?
Defines MAC addresses
How do computers in an Ethernet LAN determine when to send data frames?
By listening to the media before transmitting
What is the role of the Logical Link Control (LLC) header in the encapsulation process?
Tells the data-link layer what to do with a packet
Why is carrier sense multiple access collision detect (CSMA/CD) used in Ethernet LANs?
To prevent data collisions
What type of networks are LANs?
High-speed, low-error data networks that cover a relatively small geographic area
What do LANs connect within a limited geographic area?
Workstations, peripherals, terminals, and other devices
Which organization originally developed Ethernet?
DEC, Intel, and Xerox
What was the original name for Ethernet due to the cable's thickness?
Thick Ethernet
What updated standard for Ethernet was referred to as Ethernet II?
Thin Ethernet
Which professional organization defines network standards, including LAN standards?
Institute of Electrical and Electronics Engineers (IEEE)
Learn about LAN standards in relation to the OSI reference model, including cabling and signaling at the physical and data-link layers. This topic covers the standards that apply to LANs, which are high-speed, low-error data networks that cover a small geographic area.
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