intro to data link layer

Question 1

Limitations of Data link layer

and why?

Answer 1

can only conducting error checking on Local Area Networks (LANs), as data is discarded in the decapsulation process.

Question 2

Standard governing Ethernet for LANs

Answer 2

IEEE 802.3

Question 3

what has allowed for faster Ethernet speeds?

Answer 3

advancements in copper cabling from Cat4 to Cat8

Question 4

MAC Address as seen as?

Answer 4

Physical Address

Question 5

ethernet def

Answer 5

uses frames to organize and transmit data in a LAN, supporting various topologies and speeds.

Question 6

ARP

Answer 6

allows devices to map logical (IP) addresses to hardware-specific (MAC) addresses, facilitating seamless communication across devices within a LAN.

Question 7

FCS

Answer 7

helps ensure data integrity by checking for errors in frames

Question 8

Layer 2 devices

Answer 8

work at the Data Link Layer, directing data to specific devices by referencing MAC addresses. They isolate collision domains, enhancing network efficiency.

Question 8

parts of a MAC Address

Answer 8

OUI (Organizationally Unique Identifier): The first three bytes of a MAC address,identify the manufacturer.
Network Interface Controller (NIC): The last three bytes, uniquely identifying individual devices.

Question 8

Layer 1 Devices

Answer 8

work at the Physical Layer, broadcasting data to all devices without differentiation.