chapter 1

Question 1

Which statement is true about the differences between a WAN and a LAN?

Answer 1

A WAN often relies on the services of carriers, such as telephone or cable companies, but a LAN does not.

Question 2

A U.S. company requires a WAN connection used only to transfer sales data from individual stores to the home office. All transfers will occur after business hours. The required bandwidth for this connection is estimated to be less than 38 kbps. Which type of connection requires the least investment for this company?

Answer 2

analog dialup

Question 3

What are two advantages of an analog PSTN WAN connection

Answer 3

low cost

availability

Question 4

Which WAN technology uses a fixed payload of 48 bytes and is transported across both switched and permanent virtual circuits?

Answer 4

ATM

Question 5

Which three WAN devices can be found in the cloud?

Answer 5

ATM switches
core routers
Frame Relay switches

Question 6

Which term describes a device that will put data on the local loop?

Answer 6

DCE

Question 7

is an advantage of packet-switched technology over circuit-switched technology?

Answer 7

Packet-switched networks can efficiently use multiple routes inside a service provider network