ﻢ ﷲ


EN. NUFFNANG ☺

Sahabatku Dunia Sampai Akhirat ☺

Saturday, October 3, 2009

SMS WORD's

SHORT FONT FOR SMS:

b4 = BEFORE

2 = TO

bc0z = BECAUSE

tq = THANK YOU

u = YOU

4 = FOR

k = OK

juz = JUST

d = THE

c = SEE

TOPOLOGY ☺

There are three topology’s to think about when you get into networks. These are the star, ring, and the bus.



Star - a ring topology features a logically closed loop. Data packets travel in a single direction around the ring from one network device to the next. Each network device acts as a repeater, meaning it regenerates the signal






Ring - in a star topology each node has a dedicated set of wires connecting it to a central network hub. Since all traffic passes through the hub, the hub becomes a central point for isolating network problems and gathering network statistics.






Bus - the bus topology, each node (computer, server, peripheral etc.) attaches directly to a common cable. This topology most often serves as the backbone for a network. In some instances, such as in classrooms or labs, a bus will connect small workgroups






MESH TOPOLOGY

A type of network setup where each of the computers and network devices are interconnected with one another, allowing for most transmissions to be distributed, even if one of the connections go down. This type of topology is not commonly used for most computer networks as it is difficult and expensive to have redundant connection to every computer. However, this type of topology is commonly used for wireless networks. Below is a visual example of a simple computer setup on a network using a mesh topology.






TREE TOPOLOGY
Among all the Network Topologies we can derive that the Tree Topology is a combination of the bus and the Star Topology. The tree like structure allows you to have many servers on the network and you can branch out the network in many ways. This is particularly helpful for colleges, universities and schools so that each of the branches can identify the relevant systems in their own network and yet connect to the big network in some way.

NETWORKING CABLE

Types of Networking Cables:

The three main types of networking cables are coaxial cable, twisted-pair cable and fiber optic cable and the differences:

Coaxial Cable:

Coaxial cable is made of two conductors that share the same axis; the center is a copper wire that is insulated by a plastic coating and then wrapped with an outer conductor (usually a wire braid). This outer conductor around the insulation serves as electrical shielding for the signal being carried by the inner conductor. A tough insulating plastic tube outside the outer conductor provides physical and electrical protection. At one time, coaxial cable was the most widely used network cabling. However, with improvements and the lower cost of twisted-pair cables, it has lost its popularity.

Network Cable Types

There are two types of coaxial cable.

1. ThickNet
2. ThinNet


ThickNet:

ThickNet is about .38 inches in diameter. This makes it a better conductor, and it can carry a signal about 1640 feet (500 meters) before signal strength begins to suffer. The disadvantage of ThickNet over ThinNet is that it is more difficult to work with. The ThickNet version is also known as standard Ethernet cable.

ThinNet:

ThinNet is the easiest to use. It is about .25 inches in diameter, making it flexible and easy to work with (it is similar to the material commonly used for cable TV). ThinNet can carry a signal about 605 feet (185 meters) before signal strength begins to suffer.


Twisted-Pair Cable:

Twisted-pair cable consists of two insulated strands of copper wire twisted around each other to form a pair. One or more twisted pairs are used in a twisted-pair cable. The purpose of twisting the wires is to eliminate electrical interference from other wires and outside sources such as motors. Twisting the wires cancels any electrical noise from the adjacent pair. The more twists per linear foot, the greater the effect.

Network Cable Types

There are two types of twisted pair cable

1. Shielded Twisted Pair (STP)

2. Unshielded Twisted Pair (UTP)

Shielded Twisted Pair (STP):

The only difference between STP and UTP is that STP has a foil or wire braid wrapped around the individual wires of the pairs. The shielding is designed to minimize EMI radiation and susceptibility to crosstalk. The STP cable uses a woven-copper braided jacket, which is a higher-quality, more protective jacket than UTP.

Unshielded Twisted Pair (UTP):

As the name implies, "unshielded twisted pair" (UTP) cabling is twisted pair cabling that contains no shielding. UTP cables can be divided further into following categories:
Category 1 : Traditional telephone cable. Carries voice but not data
Category 2 : Certified UTP for data transmission of up to 4 megabits per second (Mbps). It has four twisted pairs
Category 3 : Certified UTP for data transmission of up to 10 Mbps. It has four twisted pairs
Category 4 : Certified UTP for data transmission of up to 16 Mbps. It has four twisted pairs
Category 5 : Certified for data transmission of up to 100 Mbps. It has four twisted pairs of copper wire
Category 6 :Offers transmission speeds up to 155 Mbps
Category 7 :Category 7 is a proposed standard that aims to support transmission at frequencies up to 600 MHz

Twisted-pair cable has several advantages over other types of cable (coaxial and fiberoptic): It is readily available, easy to install, and inexpensive. Among its disadvantages are its sensitivity to electromagnetic interference (EMI), its susceptibility to eavesdropping, its lack of support for communication at distances of greater than 100 feet, and its requirement of a hub (multiple network connection point) if it is to be used with more than two computers. Twisted pair cables use RJ45 connector.



Fiberoptic Cable:
Fiberoptic cable is made of light-conducting glass or plastic fibers. It can carry data signals in the form of modulated pulses of light. The plastic-core cables are easier to install but do not carry signals as far as glass-core cables. Multiple fiber cores can be bundled in the center of the protective tubing.

Network Cable Types

When both material and installation costs are taken into account, fiberoptic cable can prove to be no more expensive than twisted-pair or coaxial cable. Fiber has some advantages over copper wire: It is immune to EMI and detection outside the cable and provides a reliable and secure transmission media. It also supports very high bandwidths (the amount of information the cable can carry), so it can handle thousands of times more data than twisted-pair or coaxial cable.Cable lengths can run from .25 to 2.0 kilometers depending on the fiberoptic cable and network. If you need to network multiple buildings, this should be the cable of choice. Fiberoptic cable systems require the use of fiber-compatible NICs.


Twisted pair cabling is a form of wiring in which two conductors (the forward and return conductors of a single circuit) are twisted together for the purposes of canceling out electromagnetic interference (EMI) from external sources; for instance, electromagnetic radiation from Unshielded Twisted Pair (UTP) cables, and crosstalk between neighboring pairs.

Unshielded Twisted Pair (UTP)
This is the most popular form of cables in the network and the cheapest form that you can go with. The UTP has four pairs of wires and all inside plastic sheathing. The biggest reason that we call it Twisted Pair is to protect the wires from interference from themselves. Each wire is only protected with a thin plastic sheath.

Shielded Twisted Pair (STP)
Is more common in high-speed networks. The biggest difference you will see in the UTP and STP is that the STP use’s metallic shield wrapping to protect the wire from interference.
-Something else to note about these cables is that they are defined in numbers also. The bigger the number the better the protection from interference. Most networks should go with no less than a CAT 3 and CAT 5 is most recommended.
-Now you know about cables we need to know about connectors. This is pretty important and you will most likely need the RJ-45 connector. This is the cousin of the phone jack connector and looks real similar with the exception that the RJ-45 is bigger. Most commonly your connector are in two flavors and this is BNC (Bayonet Naur Connector) used in thicknets and the RJ-45 used in smaller networks using UTP/STP

RILEK

Rilek portal

Introducing RILEK as the revolutionary way to perform all your e-government services:

Jabatan Pengangkutan Jalan (JPJ)
Polis DiRaja Malaysia (PDRM)
Telekom Malaysia Berhad (TMB)
Tenaga Nasional Berhad (TNB)

They provide easy transactions electronically via various delivery channels.

RILEK offers JPJ Driving Licences services, summons payments and inquiries on Kejara points.

Their services include electronic utility bill payment for TNB and Telekom bills.

Go online and experience hands-on the technologically advanced payment method, minus the hassle, queues, and frustrations. You can complete all your billing payments and inquiries in an instant, comfortably from anywhere.

My EG Portal

MyEG Services Berhad is a concessionaire for the Malaysian E-Government MSC Flagship Application. Their role as a Service Provider for the E-Services component essentially provides the electronic link between the Government and citizens/businesses.


Through the portal, They offer the Malaysian public a single point of contact between the Government and the people it serves. This portal enables Malaysians to dynamically interact with numerous agencies within the Federal, State and the Local Government machinery providing services ranging from information searches to licence applications.


B2c

Business-to-consumer (B2C, sometimes also called Business-to-Customer) describes activities of businesses serving end consumers with products and/or services.

An example of a B2C transaction would be a person buying a pair of shoes from a retailer. The transactions that led to the shoes being available for purchase, that is the purchase of the leather, laces, rubber, etc. .

B2b

Business-to-business (B2B) describes commerce transactions between businesses, such as between a manufacturer and a wholesaler, or between a wholesaler and a retailer.

The volume of B2B transactions is much higher than the volume of B2C transactions. The primary reason for this is that in a typical supply chain there will be many B2B transactions involving subcomponent or raw materials, and only one B2C transaction, specifically sale of the finished product to the end customer. For example, an automobile manufacturer makes several B2B transactions such as buying tires, glass for windshields, and rubber hoses for its vehicles. The final transaction, a finished vehicle sold to the consumer, is a single (B2C) transaction.

C2c

Consumer-to-consumer (C2C) (or citizen-to-citizen) electronic commerce involves the electronically-facilitated transactions between consumers through some third party. A common example is the online auction, in which a consumer posts an item for sale and other consumers bid to purchase it; the third party generally charges a flat fee or commission. The sites are only intermediaries, just there to match consumers. They do not have to check quality of the products being offered.

RAZAKSAT



The objectives of the project are to provide high-resolution images for Malaysia and build Malaysian space technology capabilities through ATSB®. In order to meet the technology objective, a cost-effective high resolution imaging system for Earth observation specifically for a small satellite less than 200 kg was implemented. RazakSAT® carries the Medium-sized Aperture Camera (MAC) that will provide 2.5m resolution panchromatic and 5.0m resolution multi-spectral images. This project involves the design, development, launch and operations of the satellite.

The RazakSAT® satellite is planned to be launched near in the future on a USA launcher Falcon 1 owned and operated by the company Space Exploration Technologies (SpaceX). It will be a dedicated launch from kwajalein in the Republic of Marshall Islands which is situated very close to the equator to give the best orbital injection for RazakSAT® , i.e. near equatorial orbit (NEqO). RazakSAT®s images would be applied to forestry, fishery, migration and other areas that will benefit the nation.

It carries an electro-optical payload, a Medium-sized Aperture Camera (MAC) a pushbroom camera with 5 linear detectors (1 panchromatic, 4 multi-spectral). The RazakSAT® satellite will be operated through its ground segment in Malaysia, consisting of a Mission Control Station (MCS) and Image Receiving and Processing Station (IRPS). ATSB®'s engineers are operators at the MCS and they will execute the mission plan, command generation and telemetry receiving, archiving and analysis.

ATSB® is also involved in Sg Lang Ground Station implementation project committee. ATSB® has assisted in development of the system specification to support RazakSAT® Mission Control Station (MCS) and Image Receiving and Processing Station (IRPS).

Thursday, October 1, 2009

WINDOWS OS & Mac OS

The differences of Microsoft Windows and MacOS System:



♦ Windows ♦

It is the operating system by Microsoft, it is the one, that most home users use and it is also the one, that most games and stuff are developed for (maybe after game consoles like PlayStation etc.). Windows is a pre-compiled system, so you install a finished package on you computer and it is supposed to work right from the start. It can NOT be installed on any computer, not Power PCs for example.





♦ MacOS X ♦
This is a quite young system by the company apple, it is based on the first system: UNIX (very stable), but unlike UNIX it has a GUI (Graphical User Interface).
The current version is called OS X Tiger; it is also what I am using. OS X used to only work on special Apple Computers (the ones with the nice Design, iMac, iBook, etc.) but now they're making it compatible to the Intel-architecture too.

Wednesday, July 15, 2009

MY MEMBER OF >> SCCT 1023 <<

Name: Yen Pin
Hobbies: Shopping
Fav. Color: Pink
Fav. Place: Shopping Centre
From: Pahang

Name: Per Chin
Hobbies: Jogging
Fav. Color: Blue
Fav. Place: KL
From: Pahang

Name: Loges
Hobbies: Listening Music
Fav. Color: Pink
Fav. Place: Tumpat
From: Kelantan

Name: Yusof
Hobbies: Online
Fav. Color: White / Red
Fav. Place: KL
From: Sg. Buloh, Selangor

Name: Chuah
Hobbies: Singing
Fav. Color: Pink
Fav Place: KL
From: Taiping

Name: Kong
Hobbies: Football
Fav. Color: Black
Fav Place: YAB Cafe
From: KL

Name: Sook Peng
Hobbies: Watch Movie
Fav. Color: Blue
Fav Place: Korea
From: Kuantan, Pahang

Name: Ummi
Hobbies: Chatting
Fav. Color: Red
Fav Place: Jitra
From: Kedah

Name: Roslin
Hobbies: Chatting
Fav. Color: White
Fav Place: Friend Room
From: Johor

Name: Kalai
Hobbies: Chatting
Fav. Color: Black & White
Fav Place: Langkawi
From: Sg. Petani, Kedah

Name: Ridwan
Hobbies: Talking
Fav. Color: Blue
Fav Place: KL
From: Nigeria

Name: Yana
Hobbies: Surf Internet
Fav. Color: All Color
Fav Place: Times Square
From: Sabah

Name: Nadia
Hobbies: Surf Internet
Fav. Color: Purple
Fav Place: Shopping Centre
From: Taiping

Name: Za
Hobbies: Chatting
Fav. Color: Blue
Fav Place: Shopping Centre
From: Terengganu

Name: Nad
Hobbies: Reading Novel's
Fav. Color: Blue
Fav Place: My Room
From: Kedah

Name: Nurul
Hobbies: Travelling
Fav. Color: Brown
Fav Place: Mall
From: Indonesia

Name: Seha
Hobbies: Chatting
Fav. Color: Black & White
Fav Place: Putrajaya
From: Terengganu

Name: Say Are
Hobbies: Surf Internet
Fav. Color: Pink
Fav Place: Putrajaya
From: Sepang, Selangor

Name: Miey
Hobbies: Wall Climbing
Fav. Color: Red, White & Black
Fav Place: All Cafe in Malaysia
From: Perlis

Name: Mit
Hobbies: Chatting
Fav. Color: Green
Fav Place: Shopping Centre
From: Perlis

Name: Lea
Hobbies: Reading
Fav. Color: White
Fav Place: Food Court
From: Kuala Kangsar, Perak

Name: Mimi
Hobbies: Singing
Fav. Color: Black
Fav Place: Hometown
From: Ipoh

Name: Hanis
Hobbies: Surf Internet
Fav. Color: Purple
Fav Place: Shopping Centre
From: Penang

Name: Naqia
Hobbies: Reading
Fav. Color: Blue
Fav Place: Shopping Centre
From: Johor

Name: Sandra
Hobbies: Chatting
Fav. Color: Red
Fav Place: Room
From: Sabah

Name: Ah-Yien
Hobbies: Reading Novel's
Fav. Color: Purple
Fav Place: Book Shop
From: Sarawak

Name: Mun
Hobbies: Reading
Fav. Color: Blue
Fav Place: Shopping Centre
From: Selangor

Name: Fong
Hobbies: Watch TV
Fav. Color: Purple
Fav Place: Beach
From: Sarawak

Name: Ying
Hobbies: Singing
Fav. Color: Purple
Fav Place: Shopping Centre
From: Kedah

Name: Yau
Hobbies: Sleeping
Fav. Color: White
Fav Place: DPP YAB
From: KL

Name: AA-RON
Hobbies: Football
Fav. Color: Red
Fav Place: Pub
From: Penang

Name: Wai Kee
Hobbies: Badminton
Fav. Color: Green
Fav Place: Cafe
From: Melaka

Name: Anggie
Hobbies: Play Tennis
Fav. Color: Blue
Fav Place: Cinema
From: Indonesia

Name: Siemens
Hobbies: Piano
Fav. Color: Purple
Fav Place: Redbox
From: Penang

Name: Katrine
Hobbies: Badminton
Fav. Color: Blue
Fav Place: Shopping Centre
From: Klang

Name: Sam
Hobbies: Listening Music
Fav. Color: Silver
Fav Place: Cafe
From: Perak

Name: Fishi
Hobbies: Badminton
Fav. Color: Red
Fav Place: Cafe
From: Pahang

SHOUT !!!