Network Fundamentals I: Chapter 7
What is the special value assigned to the first 24 bits of a multicast MAC address transporting an IPv4 packet?
01-00-5E
What is the maximum size of valid frame?
1518 bytes
What is the minimum size of a valid frame?
64 bytes
Which data link sublayer controls the network interface through software drivers?
LLC
What is auto-MDIX?
a feature that detects Ethernet cable type
What feature automatically negotiates the best speed and duplex setting between interconnecting devices?
autonegotiation
What is a function of the MAC sublayer?
controls access to the media, checks for errors in received bits, uses CSMA/CD or CSMA/CA to support ethernet technology
Which switching method can be implemented using fast-forward switching or fragment-free switching?
cut-through switching
What are two methods for switching data between ports on a switch?
cut-through switching, store-and-forward switching
Which part of an Ethernet Frame uses a pad to increase the frame field to at least 64 bytes?
data field
Which part of an Ethernet Frame describes the higher-layer protocol that is encapsulated?
ethertype
Which part of an Ethernet frame detects errors in the frame?
frame check sequence
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
Which two types of memory buffering techniques are used by switches?
port-based memory buffering, shared memory buffering
Which part of an Ethernet Frame notifies the receiver to get ready for a new frame?
preamble
Which network device makes forwarding decisions based on the destination MAC address that is contained in the frame?
switch
Which data link sublayer works with the upper layers to add application information for delivery of data to higher level protocols?
the LLC
Which network device has the primary function to send data to a specific destination based on the information found in the MAC address table?
the switch
What statement describes a characteristic of MAC addresses?
they must be globally unique
