N-GEN Communications Web-based Seminars ©NGCS

Seminar - An Overview of Communications Technologies

Module 6 - Internet, Intranet, Extranet, e-Commerce and Web Services                                      Slide 23 of 70 _________________                                                                                  __________

                                                TCP / IP Model

                                            Configuring TCP / IP

                                            IP Address

                                            Subnet Mask

_________________                                                                                  __________

A computer must be configured with the user address and subnet mask to transmit and receive data on a network using protocols included in the TCP/IP protocol suite. Telnet, File Transfer Protocol (FTP), Simple Mail Transfer Protocol ( SMTP), Network File System (NFS) and Simple Network Management Protocol (SNMP) are higher level protocols. Media Access Control (MAC), Point-to-Point Protocol (PPP) and Serial Line Internet Protocol (SLIP) are link layer (OSI model) protocols.

IP Address - All hosts that use TCP/IP as their networking protocol must have an IP address which is a number that other computers and devices use to locate the host for communications (slide 19).

Subnet Mask - A subnet mask is a 32 bit number that is used to identify the network and sub-network portion of an IP address. It looks like 255.0.0.0 which indicates that the first octet of the corresponding IP address is net identification and the remaining three identify the specific host..