What are the two sublayers of the Data Link layer?

(a)  

What is the role of the LLC sublayer?

(a)  

What is the role of the MAC sublayer?

(a)  

Which Data Link sublayer is implemented in hardware?

(a)  

What additional function does the Data Link layer provide besides framing?

(a)  

What is a frame?

(a)  

What is the difference between physical and logical topology?

(a)  

Which topology does the Data Link layer see?

(a)  

Why do point-to-point WAN frames not require MAC addresses?

(a)  

What is half-duplex communication?

(a)  

What is full-duplex communication?

(a)  

What is contention-based access?

(a)  

Name two contention-based access methods.

(a)  

What is controlled access?

(a)  

Which OSI layers define Ethernet?

(a)  

What does CSMA/CD stand for?

(a)  

Why can collisions still occur in CSMA/CD?

(a)  

What happens when a collision is detected in CSMA/CD?

(a)  

Why do devices increase back-off time after repeated collisions?

(a)  

What is CSMA/CA mainly used for?

(a)  

What is the size of an Ethernet MAC address?

(a)  

What do the first 3 bytes of a MAC address represent?

(a)  

Why is a MAC address not a global identifier?

(a)  

What is the Ethernet broadcast MAC address?

(a)  

What is a collision domain?

(a)  

How do switches affect collision domains?

(a)  

Do collisions occur in a switched Ethernet network?

(a)  

How does a switch build its MAC address table?

(a)  

What is unicast frame flooding?

(a)