Networking Fundamentals Knowledage Base- Noor

ch1- introduction

Basic functions

Input

Processing

Output

Storage components

Short-term/ Ram

Long-term/ LIke DVE...

Personal Computer components

Motherboard

Hard drive

RAM

BIOS/ CMOS

Multitasking

Steps of Network Commuinction

Layer of Network communication

User applicaton

network software

network protocol

network interface

Types of networks

LAN

internetworks

LAN+ raouter+LAN

MAN

WAN

Packet/ farmes

Client/ server

Client/ server operating system

Client/Server computer

Client. server/ sofware

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Exam1 part B

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CH2 - hardware essentials

Multirepeater

called hub

four ports

first recieve signals

then Clean signals

then regenrates signal

then transmits signals

bandwidth sharing

half duplex only

traditional repeater

has 2 ports

study cases 1,2,3

r

case 2-1Since the most important thing that I care about in this network is speed, it is better to use a Switch as an interconnect device, because it has dedicated bandwidth in which all computer have the same amount of bandwidth as the overall bandwidth, unlike hubs in which the bandwidth is shared. case 2-2We can use a router, that will work as a messenger that allow communication between LANs, yet it won't forward the message. case 2-3 1. logical topology is how devices appear to connect with the user, while physical topology is how these devices are connected between one another ( the wires and cables ). 2. bus is a network architecture, it is one type of topology in which the clients are connected by a line cable. 3. star topology is the most common topology, it has a central switch or hub that is connected to the other CPUs. 4. ring topology is a type of topology in which the all devices are connected to one another by a cable that goes in a circle just like a ring. 5. Ethernet and CSMA/CD: Ethernet is a computer network technology that is used for Local Area Networks. / it is a Media Access Control method that use a carrier sense schema, and transmitting data and except it if it was a signal, and refuse it if it was a frame.

Classroom2

d

Homework 3

d

switches

dedicated bandwidth

first recieve frame

then read the destenation

then look up the destenation

then forward the frame to it

then update the source with the new address

half duplex or full duplex

Access point

use for wireless communications

similar to hubs

NIC

provide connection

recieve signals and frames

recieve packets

convert frames into signals

router

enable LANs communicate b/t 1 another

hub and switch connect CPU to LAN/ raouter connect LANs