ICT Fundamentals: Telecommunications Questions And Answers Verified by Experts

ICT Fundamentals: Telecommunications
Questions And Answers Verified by Experts


What method of transmission is used in telephone systems?


Simplex
Half-duplex

Full duplex


Which of the following is an example of an INTENTIONAL source of radio frequency
interference (RFI)?


Automobile spark plug
Lightning storm
Microwave oven

Sparks from an electric welder Microwave oven


Which of the following advantages is associated with ac voltage?


Battery compatible
Smaller and more portable
More efficient over longer distances

Easier to manipulate More efficient over longer distances
Easier to manipulate

, ICT Fundamentals: Telecommunications
Questions And Answers Verified by Experts

A piece of equipment draws 2 amperes. If the resistance is 100 ohms, what voltage is needed to
operate the equipment?


50 V
100 V
150 V

200 V


If the voltage is 20 volts and the resistance is 5 amps, what is the current?


4 ohms
10 ohms
15 ohms

20 ohms


Which of the following categories of cable can support bandwidths up to 1 Gbps?


Category 2
Category 3
Category 4

Category 5e Category 5e


Which of the following is an advantage of using a shielded twisted-pair (STP) cable instead of an
unshielded twisted-pair (UTP) cable?