a. Each downstream channel is 6 MHz wide, with a maximum throughput of approximately _____ per channel; each upstream channel has a maximum channel width of 6.4 MHz, and a maximum upstream throughput of approximately _____.

	A.	30 Mbps, 40 Mbps
	B.	30 Mbps, 30 Mbps
	C.	40 Mbps, 30 Mbps
	D.	40 Mbps, 40 Mbps

b. TCP socket will be used to send the HTTP request and the DNS protocol is used to provide this name-to-IP-address translation service.

True

False

c. Filtering is the switch function that determines whether a frame should be forwarded to some interface or should just be dropped.

True

False

d. An MPLS-capable router is often referred to as a label-switched router, since it forwards an MPLS frame by looking up the MPLS label in its forwarding table and then immediately passing the datagram to the appropriate output interface.

True

False

e. ALOHA is a ____ multiple access protocol.

	A.	centralized
	B.	decentralized
	C.	hybrid
	D.	None of the above