WCM Chapter 3

Which of the following is NOT an 'Unguided' media?

• Optic Fibre

• Satellite

• Broadcast Radio

• Infrared

Which of the following describes 'Shielded Twisted Pair' (STP) cables?

• Has an inner conductor surrounded by a tubular insulting layer, surrounded by a tubular conducting shield.

• Has an overall sheath shield across all cable pairs.

• Has pairs of wires wrapped in metallic foil.

• Has twisted cable pairs.

Which of the following type of cable offers highest data speed transmission?

• Coaxial

• UTP

• STP

• Fibre Optic

The frequency range of 30 MHz to 300 MHz is known as the ________ Frequency Band.

• HF

• VHF

• UHF

• SHF

An Antenna having a Gain of 25dBd has a gain of _____ dBi.

• 22.86 dBi

• 25 dBi

• 27.14 dBi

• 30 dBi

what is the process known for light can be trapped in the fiber core

• Total internal reflection

• Total external reflection

• Total internal refraction

• Total external refraction

Which frequency band support Line-of-Sight

• Medium Frequency

• High Frequency

• Low Frequency

• Super High Frequency

What are the two main categories of Polarization?

• round, sharp

• flat, long

• Linear, Circular

• square, hexagon

Beam Width of the antenna is the ___________within which the ____________ radiated above one-half of the preferential direction

• theory, voltage

• angle, power

• value, current

• axis, current

Isotropic antenna has a ____________________vertical and horizontal beam width

• perfect 360 degree

• straight

• flat

• round