Write the fullform of the following abbrevations:
a. LAN : Local Area Network b. MAN : Metropolitan Area Network c. WAN : Wide Area Network d. Wi-Fi : Wireless Fidelity e. NIC: Network Interface Card f. VoIP : Voice Over Internet Protocol g. UTP : Unshielded Twisted Pair h. Modem : Modulator Demodulator i. PPP : Point to Point Protocol j. NOS: Network Operating System k. SMTP : Simple Mail Transfer Protocol l. IMAP : Internet Message Access Protocol m. NNTP : Network News Transfer Protocol n. NetBEUI: Network Bios extended User Interface o. NCP : Network Control Protocol p. BNC: British Naval Connector/Bayonet Naur Connector q. GPS : Global Positioning System r. MAC: Media Access Control p. OFDM : Orthogonal Frequency Division Multiplexing q. STP : Shielded Twisted Pair r. SMTP : Simple Mail Transfer Protocol s. FTP : File Transger Protocol t. HTTP : HyperText Transfer Protocol u. POP : Post Office Protocol v. IPX/SPX : Internetwork Packet eXchange/Sequence Packet eXchange w. Mbps : Mega bits per second