Network Technologies

Question 1

List the three types of guided or hard wired signal transmission mediums

Answer 1

Optical fiber, Twisted pair, Coaxial cable

Question 2

List the three types of unguided or wireless signal transmission mediums.

Answer 2

Radio, Wi-fi, Bluetooth

Question 3

Historically, twisted pair cabling has been the most common type of network communication cable in the gas industry.
TRUE / FALSE

Answer 3

true

Question 4

What are three types of noise that can interfere with a data signal?

Answer 4

Crosstalk, RFI, EMI

Question 5

How do we reduce the interference?

Answer 5

By using twisted pairs and shielding twisted pairs

Question 6

Which category of LAN cable commonly used with HVAC equipment has the highest throughput?

Answer 6

CAT 6

Question 7

What must be done to shielding to make it effective?

Answer 7

It must be grounded

Question 8

Which end of the shielded cable is grounded?

Answer 8

Only the source end

Question 9

What are the advantages of unshielded cable?

Answer 9

• Easier to install, no fragile shield to terminate.
• More flexible. STP Cable is ridged and Shield can be easily damaged from bending into too tight of a radius.
• Cost, UTP cable is cheaper.

Question 10

Which of the unguided or wireless signal transmission methods has the longest range?

Answer 10

Cellular