MCSE Notes Lecture # 5 : TCP/IP (Transmission Control Protocol / Internet Protocol)


TCP/IP (Transmission Control Protocol / Internet Protocol):


  • NIC cards having unique addressing.
  • Address is in the form of Hexa-Decimal.
  • (e.g.)  A1.B2.00.C1.D2.01
Manufacturing Number of NIC Cards
Company Name designed by company


  • IP address is in Network layer.
  • IP address is of 32 bits.

Classes of IP address:

  • Sub-net mask specifies the direction of data (i.e.) where data is to be sent.
  • Router sends data by checking sub-net mask.
  • IP addresses having different classes are called IPV 4 (IP version 4).


Class Network Host IP Range IP Range
Sub-net Mask Range Sub-net Mask Range
Name Bits Bits
Starting Ending
Class A 8 24


Class B 16 16
Class C 24 8
Class D
Class E
  • To is used for device checking called “Loopback” address.
  • Class D is used for multitasking (not for normal communication).
  • To are used by NASA for Research work.

Private IP: Private IP can’t run on Internet because Router can’t understand private IP.

Class Name IP Range IP Range
Starting Ending
Class A
Class B
Class C

Public IP: Public IP are those who can run on Internet Services and Ports:

WWW 80
DNS 53
Telnet 23
POP3 110
SSL 423

Setting for Data Communication:

  • NIC Card + Drivers
  • Protocols (TCP/IP, IPx/SPx, Apple Talk, NetBeui)
  • Client Software
  • File and Print Sharing
  • IP Address


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