Classification of networks, Computer Network Security

 

Computer networks are defined by four factors which are as given below:

1) NETWORK SIZE:

According to the size of networks.

1) Local Area Network ( LAN)

2) Wide Area Network   (WAN)

 

In LAN network has the smaller area like a room a building or a floor.

In WAN, network has larger areas like countries & cities. Internet also is a Wide Area

Network.

WAN & LAN are compared by the speed of security, bandwidth and latency, billing, transmission, reliability, management and their standards.

 

2) NETWORK CONNECTIVITY:

Networks are also defined by connectivity in which two topologies are illustrated.

a) Point-to-Point

b) Broadcast

 

3) BY MEDIUM:

The types of networks is also based on the Medium of transmission.

Mediums of transmission are shown below:

 

  • Copper wire
  • Co-axial cable
  • Optical fiber
  • Radio waves

 

All these mediums different from each other with respect different parameters. These variables are speed of transmission, range of the transmitter and receiver computer, sharing of topology, information, installation & maintenance reliability and costs. The range of radio waves will be much more than an optical fiber wire. Similarly other mediums different from each other and appropriate medium is checked for the sake of transmission.

4) BY MOBILITY:

The networks are also divided according to their mobility.

In this respect there are two kinds of networks.

  • Fixed networks
  • Mobile networks

In these days mobile networks are the latest case. Mobile networks have been started in the last decade. In this regard there are some cause which are attached with the mobility of networks which are as given:

  • tracking and Location
  • Semi persistent connections
  • Complex billing and administration as machines and users move around the network

 

 

Posted Date: 7/30/2012 3:23:24 AM | Location : United States







Related Discussions:- Classification of networks, Assignment Help, Ask Question on Classification of networks, Get Answer, Expert's Help, Classification of networks Discussions

Write discussion on Classification of networks
Your posts are moderated
Related Questions
Risk Identification Risk management comprises of identifying, classifying and prioritizing organization’s information assets, threats and vulnerabilities also. Risk Identificati

Question requires you to develop firewall rules based on a fictitious organisation. Scenario: You work for a security-conscious company, xC-Cure, who develop encryption tec

Problem (a) Distinguish between passive and active attacks. (b) Give two reasons why it is important to organise security awareness programs for users. (c) Describe how

Cost Benefit Analysis (CBA) The common approach for information security controls is economic feasibility of implementation. CBA is begun by evaluating the worth of assets which

Routers They transfer packets among multiple interconnected network machines (i.e. LANs of different kind). They perform in the data link, physical and network layers. They ha

FRAGMENT IDENTIFICATION: IDENT field in every fragment matches IDENT field in real datagram. Fragments from different datagrams may arrive out of order and still be saved out.

Q. Explain the random key distribution? The triple key management mechanisms ensure a better and complete security solution using the random key distribution mechanism. In this

Problem 1: What does the SNMP access policy show? SNMP community diagram SNMP access policy Problem 2: Does there exist any formal functional specificat

Problem: (a) What is a firewall and which are its most important tasks? (b) What is the difference between default deny and default permit? Which advantages and disadvanta

ADDRESS RESOLUTION PROTOCOL (ARP) TCP/IP can use any of the three address resolution functions relaying on the addressing procedure used by the underlying hardware. To guarant