A.when a collision occurs after the 32nd byte of a frame has been transmitted
The usual possible causes are full-duplex/half-duplex mismatch, exceeded Ethernet cable length limits, or defective hardware such as incorrect cabling, non-compliant number of hubs in the network, or a bad NIC.

B.when one side of the connection is configured for half-duplex

C.when the sending device waits 15 seconds before sending the frame again

D.when Carrier Sense Multiple Access/Collision Detection is used

E.when the cable length limits are exceeded

A.Option B

B.Option C

C.Option A

D.Option D

A.moves from a two-tier to a three-tier network architecture to provide maximum redundancy

B.allows configuration and monitoring of the network from one centralized port

C.provides an added layer of security to protect from DDoS attacks

D.combines control and data plane functionality on a single device to minimize latency

A.multicast address

B.link-local address

C.global unicast address

D.anycast address

A.A network device has restarted

B.An ARP inspection has failed

C.A routing instance has flapped

D.A debug operation is running