Nanotechnology and Nanoparticles

Q.

A fibre optic telephone transmission can handle more than thousands of voice channels.

1. True

2. False

Q.

Nanotechnology is a branch of science that deals with particles of size __.

1. 1nm to 100nm

2. 1nm to 1000nm

3. 1cm to 100cm

4. 1cm to 1000cm

Q. Telephone companies use ................ to combine voice channels into successively larger groups for efficient transmission.

1. TDM
2. WDM
3. FDM
4. None of the above

Q.

Magnetic quantum number specifies_______________.

Q. Error detection at data link layer is achieved by

1. Bit stuffing
2. Humming codes
3. Cyclic redundancy codes
4. Equalization