Network technology study guide help needed, thank you.

Which of the following statements about deploying WAN is FALSE?

A) A key part of any successful wan deployment is testing.

B) Any time you have wide area links, at least two third parties are involved

C) With a phased approach, you can upgrade a network a little at a time.

D)Key components in connecting LANs might include a local connection device to the high-speed link, a high-speed carrier, and an ISP.

Which of the following has the highest relative cost?

A) X.25

B) ATM

C) Frame Relay

D) Ethernet

the larger the _____ the greater the capacity of the wireless circuit and the faster data can be sent.

A) basic rate interface

B) frequency range

C) cloud architecture

D) bandwidth

The PSTN is an example of which type of network?

A) Star

B) Ring

C) Bus

D) Mesh

The usual working estimate is that upgrading a network costs what percentage more than building it right the first time?

A) 10-20%

B)20-30%

C)50-80%

D)100%