WC Revision 3 (L)

Write your register number & Real Name

Which of the following is a guided media?

• Microwave

• Infrared

• Satellite

• Twisted Pair Cable

Which of the following statements is False for unguided medium?

• Directional Antenna needs to achieve line-of-sight transmission.

• Omnidirectional antenna need not be mounted to a precise alignment.

• Satellite receives transmissions on one frequency is known as 'Downlink'.

• Unguided medium uses antenna to transmit through air, vacumn or water.

Which of the following twisted pair cable is more prone to electrical noise and interference?

• Shielded Twisted Pair

• Unshielded Twisted Pair

• Screen Twisted Pair

• Screen shielded twisted pair

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

• Fibre Optic

• STP

• Coaxial

• UTP

For transmission using fibre optic cable, signal bits have been converted to

• waves

• light

• sound

• electric

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

• 
  Total internal refraction

• 
  Total internal reflection

• Total external reflection

• 
  Total external refraction

Which frequency band support Line-of-Sight

• 
  Low Frequency

• Medium Frequency

• 
  High Frequency

• Super High Frequency

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

• HF

• VHF

• UHF

• SHF

The radiation pattern on a polar plot for a directional antenna would show

• an uniform coverage

• an intensity of radiation on a certain direction