Data Link Layer Flashcards
What layer of the OSI model is the Data Link layer?
Layer 2
What are the data link sublayers?
Logical link control
Media access control
Which data link sublayer is responsible for data encapsulation and DE-encapsulation and access to the physical media?
Media access control
Which data link sublayer is responsible for controlling interaction between devices?
Media access control
Which data link sublayer is responsible for frame synchronization?
Media access control
Which data link sublayer is responsible for communicating between network software and device hardware?
Logical link control
Which data link sublayer is responsible for addressing, multiplexing, and acknowledgement messages?
Logical link control
What has a MAC address?
Every Network Interface Card (NIC) has their own unique MAC address.
How many bits in a MAC address? What type?
48 hexadecimal bits
What are the sections of a MAC address?
OUI (first 24 bits)
Vendor assigned ID (last 24 bits)
What is an Organizationally Unique Identifier (OUI)?
24 bits which are assigned to specific manufacturers and/or models by the IEEE
What is a Vendor Assigned ID?
The last 24 bits of a MAC address which are unique to the part/interface.
What are the types of MAC address?
Unicast Address
Broadcast Address
Multicast Address
What is a Network Topology?
The way that network nodes are connected to each other
What are the common Network Topologies?
Bus
Ring
Star
Mesh
