Guided & unguided media

Transmission media are usually categorized as -----------

(a)  

------- cable consists of an inner copper core and a second conducting outer sheath.

(a)  

The inner core of an optical fiber is made of --------

(a)  

------- cable consists of two insulated copper wires twisted together

(a)  

------- cable is used for voice and data communications

(a)  

------- cable carry data signals in the form of light

(a)  

In a fiber optic cable,the signal is propagated along the inner core by -------

(a)  

Radio waves are --------- directional

(a)  

------- waves are used for cellular phone,satellite and wireless LAN communication

(a)  

------- waves are used for short range communication such as those between a PC and a peripheral device.

(a)