What are the possible ways of data exchange?

(i) Simplex (ii) Half-duplex (iii) Full-duplex

What are the types of Transmission media?

Signals are usually transmitted over some transmission media that are broadly classified in to two categories

Guided Media: These are those that provide a conduit from one device to another that include twisted-pair, coaxial cable and fiber-optic cable. A signal traveling along any of these media is directed and is contained by the physical limits of the medium. Twisted-pair and coaxial cable use metallic that accept and transport signals in the form of electrical current. Optical fiber is a glass or plastic cable that accepts and transports signals in the form of light

Unguided Media: This is the wireless media that transport electromagnetic waves without using a physical conductor. Signals are broadcast either through air. This is done through radio communication, satellite communication and cellular telephony

Difference between the communication and transmission?

Transmission is a physical movement of information and concern issues like bit polarity, synchronization, clock etc

Communication means the meaning full exchange of information between two communication media

The Internet Control Message Protocol occurs at what layer of the seven layer model?


Which protocol resolves an IP address to a MAC address?