Question

Question 12 (1 point)

For a bus-type switching fabric, what factor mainly limits the switching speed?

Question 12 options:

	a. memory bandwidth
	b. bus bandwidth
	c. CPU speed
	d. hard-drive RPM

Question 13 (1 point)

The datagram network does not rely on call set up in the network layer.

Question 13 options:

	True
	False

Question 14 (1 point)

The Internet service model is "best effort" with no guarantees of bandwidth, loss, and ordering.

Question 14 options:

	True
	False

Question 15 (1 point)

Virtual circuit routers maintain connection state information for switching.

Question 15 options:

	True
	False

Question 16 (1 point)

For a virtual circuit, the number assigned to that virtual circuit can be changed on each link.

Question 16 options:

	True
	False

Question 17 (1 point)

What is the data unit exchanged in the network layer?

Question 17 options:

	a. frame
	b. datagram
	c. segment
	d. message

Question 18 (1 point)

Each router has a forwarding table (or tables).

Question 18 options:

	True
	False

Question 19 (1 point)

Which of the following is unlikely to be one of the key components of a router?

Question 19 options:

	a. input port module
	b. output port module
	c. error detection module
	d. switching fabric

Answer 1

Answers)

12.b

13. True

14. False

15. False

16. True

17. Frame

18. True

19. Error detection module