Please Explain why answer was chosen

QUESTION 9: For guided mediums, insertion loss is dependent upon which of the following?

		a. number of connectors and splices
		b. wire diameter
		c. signal frequency
		d. all of the above

QUESTION 10: Select the correct statement(s) regarding UTP.

		a. UTP signals are unbalanced, meaning that one wire transmits the signal, while the other wire is connected to ground
		b. All UTP wire pairs within a cable (e.g., Cat 5e) are twisted at exactly the same twist ratio
		c. UTP signals are balanced, which means that each wire within a pair carries the same signal, but with opposite polarities
		d. Crosstalk is never a problem with UTP

QUESTION 11:What is true about delay skew?

		a. delay skew is only a problem with coaxial cables
		b. delay skew exists in UTP cables (e.g., Cat 5E) where each wire pair is twisted at different twist ratios
		c. delay skew only exists in unguided systems where path reflection causes signal copies to reach the receiver at different times
		d. delay skew is another term for signal propagation

QUESTION 12:Coaxial conductors use unbalanced signals, which means that it is less capable than UTP balanced conductors with regards to data rate capacity and attenuation.

True

False