Ethernet Frames (7.1)
What are the two data-link sub-layers?
The Logical Link Control (LLC) sublayer and the Media Access Control (MAC) sublayer.
How many bits are in an Ethernet MAC address?
48
This network component maintains a table mapping MAC addresses to specific port locations.
A switch.
This feature of a switch allows simultaneous transmission and reception of data on a port, enhancing network efficiency.
Full-duplex.
How many bits are in a byte?
8
Ethernet operates at which two layers on the OSI model?
What is the Ethernet broadcast MAC address?
FF:FF:FF:FF:FF:FF
What is the MAC address table also referred to as?
The content-addressable memory (CAM) table.
What are the two different forwarding methods for switching data between network ports?
Store-and-forward switching; cut-through switching.
What is 171 in hexadecimal?
AB
Ethernet LAN's use switches that operate in __ duplex.
Full-duplex.
What is 11000100 in hexadecimal?
C4
By default, how long do most Ethernet switches keep an entry in the MAC address table?
5 minutes.
What are the two variants of cut-through switching?
What happens to runt frames received by a Cisco Ethernet switch?
The frame is dropped.
What network device makes forwarding decisions based only on the destination MAC address that is contained in a frame?
Layer 2 switch.
This is the process that a source host uses to determine the destination MAC address associated with an IPv4 address.
Address Resolution Protocol (ARP).
When a switch uses this process, it consults its MAC address table to determine the correct port for forwarding data packets.
MAC address forwarding.
What must be enabled on a switch to automatically detect the cable type attached to a port and configure the interfaces accordingly?
Auto-MDIX.
What are the two sizes (minimum and expected maximum) of an Ethernet frame?
64 bytes; 1518 bytes.
Which part of an Ethernet Frame notifies the receiver to get ready for a new frame?
The preamble.
A burned-in address (BIA).
When a network device receives a data packet with a destination MAC address not listed in its MAC address table, it treats it as what type of traffic?
Unknown unicast.
When network devices on the same link operate with conflicting transmission modes, such as one using full-duplex and the other half-duplex, it leads to this networking issue.
Duplex mismatch.
What will a host on an Ethernet network do if it receives a frame with a unicast destination MAC address that does not match its own MAC address?
It will discard the frame.