Page 114 - DMGT505_MANAGEMENT_INFORMATION_SYSTEM

Unit 6: Business Networks and Telecommunications

two cables to a network interface card (NIC). A BNC barrel connector facilitates connecting two Notes
cables together.
Figure 6.11: Thinnet and BNC Connector

The following summarizes the features of coaxial cables:
1. Speed and throughput – 10 to 100 Mbps
2. Average cost per node – Inexpensive
3. Media and connector size – Medium

4. Maximum cable length – 500 m (medium)
Self Assessment

Fill in the blanks:
8. ......................... is the actual path over which an electrical signal travels as it moves from
one component to another.
9. ......................... cable combines the techniques of shielding, cancellation, and wire twisting.
10. ......................... consists of a hollow outer cylindrical conductor that surrounds a single
inner wire made of two conducting elements.
6.5 Networks and Their Types

Communication networks are formed by interconnection of a number of different communications
through communication facilities. There are multiple devices on the network with multiple users,
able to choose among them. A path is established by pair-wise linking of nodes in the network. A
node is a physical box that can accept and redirect a message along an access path; it may be a
computer, a multiplexor, or a terminal controller. A network can be configured in many different
ways, depending primarily on the applications and geographic location to be supported. The
placement of the nodes and the number of alternate communication paths between them determine
the configuration. The communications network is needed to connect:
1. Remote devices to a central computer.

2. A computer in one location to a computer in another within or among organisations.
3. An intelligent device (having microprocessor logic and processing capability) to other
intelligent devices.

Functions

 Communication among users of computer systems.
 Communication among applications being executed on different systems.
 Sharing computer resources.

 Distribution of computer applications among computers in different locations.

LOVELY PROFESSIONAL UNIVERSITY 109