Wired networks :
1) Physically connected using cables.
1) Physically connected using cables.
2) Example: Using conventional telephone cables.
Wireless networks :
1) Use signals to transfer data.
1) Use signals to transfer data.
2) Example: Television and radio network, cellular network.
Kedua-dua rangkaian tersebut adalah tidak sama dan berbeza dari segi :
- Speed
- Cost
- Reliability
Comparison between Wired Networks vs Wireless Networks :
Wired Home Networks :
1) Networking
The networking of the wired home networks are more faster as compared to other types of wireless networking devices because they are able to provide the speed of more then 1000 Mbps.
2) Cost Comparison
We need many expenses to configure or setup the wired home network. Because we need large money to spread the network of coaxial cables.
3) Advantages
More reliable
Faster internet
Transfer of data at a very faster speed
4) Cons
It can not provide mobile network
Difficult to lay down the cables and it looks very messy when install outside
Wireless Home Networks :
1) Networking
The networking of the wireless networking is good and better for the future resources but it is not faster as the wired home networking devices. Wifi is the common types of wireless home network that can provide the reliable working
2) Cost Comparison
As compared to other wired devices it is easy to setup the wireless networking devices at the very low and at the reliable cost
3) Advantages
You can Access internet from any place through hot pots
No hassles of cables
No need any kind of wiring for installation
4) Cons
Not very much reliable
Only best for mobile devices such as Laptops
Not faster as compared to wired devices
Seterusnya setelah belajar dan memahami mengenai perbandingan di antara Wired Networks dan Wireless Network, kami telah diajar oleh pensyarah Dr. Norasyikin mengenai Wired Network yang berkaitan dengan Cabling, Types of Cable, Types of Cable Connector, Types of Topology and Cable Used, Network Topology Comparison, and Types of Network Hardware / Equipment.
Wired network: Cabling
Cable is the medium through which information usually moves from one network device to another.
Wired network: Type of Cable
Several types of cable are commonly used with LANs. Three (3) types of cable :
1. Coaxial Cable
2. Fiber Optic Cable
3a. Unshielded Twisted Pair (UTP)
3b. Shielded Twisted Pair (STP)
1. Coaxial Cable
- Originally develop to carry large number of high-speed video transmission at one time.
- Shield of braided wire to block electromagnetic signals from entering the cable
- Used in telephone transmission outside home and cable for television delivery
- More expensive than twisted pair but less susceptible to interference
- Can carry more data quickly
- Coaxial cabling has a single copper conductor at its center.
2. Fiber Optic Cable
- consists of a center glass core surrounded by several layers of protective materials
- Fastest delivery : able to transmit signals over much longer distances than coaxial and twisted pair.
- Transfers data represented by light pulses (billions of bit per second)
- Each strand: carry data for several television stations or thousands of voice
- Each strand: Only send data in one direction
- Example: Unifi
3a. Unshielded Twisted Pair (UTP)
- Has 4 pairs of wires inside the jacket
- Each pair is twisted with a different number of twists per inch to help eliminate interference from adjacent pairs and other electrical devices.
- A disadvantage : may be susceptible to radio and electrical frequency interference.
3b. Shielded Twisted Pair (STP)
- Two individual wires wrap in a foil shielding
- Shielding to help provide a more reliable data communication
- Suitable for environment with electrical interference
- Disadvantage: Extra shielding cause bulky
Cable Connector have a Three (3) Types :
1. Coaxial cable connector
- The most common type of connector used with coaxial cables is the Bayonet-Neill-Concelman (BNC) connector
• Different types of adapters are available for BNC
connectors, including a T-connector, barrel connector,
and terminator.
2. Fibre optic cable connector
- The most common type of connector used with fiber optic cable is the ST & SC connector
3. UTP cable connector
- The standard connector for unshielded twisted pair cabling is an RJ-45 connector (RJ=Registered Jack)
• Look like a large telephone-style connector
• A slow allows RJ-45 to be inserted only one way
Types of Topology & Types of Cable Used :
Selepas belajar mengenai jenis-jenis Topology dan Cable yang digunakan, kami semua telah diberikan aktiviti oleh Dr. Norasyikin di dalam kelas iaitu membuat lakaran mengenai jenis Topology yang sesuai digunakan dan jenis Topology ini berkaitan dalam sistem Perancangan Perkahwinan di Malaysia seperti penyusunan meja makan untuk tetamu. Saya dan Muhammad Johan Iskandar telah memilih Topology jenis Star.
Network Hardware / Equipment
Networking hardware includes all computers, peripherals, interface cards and other equipment needed to perform data-processing and communications within the network.
Dalam topik ini, saya telah belajar dan mengetahui ada 8 kesemuanya jenis-jenis Network Hardware / Equipment iaitu :
1. File Server
• A file server stands at the heart of most networks.
• very fast computer
• large amount of RAM and storage space,
• a fast network interface card.
• network operating system software resides on this computer, along with any software applications and data files that need to be shared.
2. Workstation
• user computers that is connected to a network are called workstations.
• configured with a network interface card, networking software, and the appropriate cables.
• do not necessarily storage capability , files can be saved on the file server.
• almost any computer can serve as a network workstation.
3. Network Interface Cards
• provides the physical connection between the network and
the computer workstation.
• major factor in determining the speed and performance of a
network
• Most NICs are internal, with the card fitting into an expansion
slot inside the computer.
• Some computers, such as Mac Classics, use external boxes which are attached to a serial port or a SCSI port.
• Laptop computers - built-in NIC or network cards that slip into a PCMCIA slot.
• The three most common network interface connections are
– Ethernet cards,
– LocalTalk connectors
– Token Ring cards.
4. Concentrator/Hubs
• Central connection point
• Transmit all data received to all node connected to the hub. Regardless to which device the data being sent to
• Lots of extra network traffic, network less efficient
5. Switch
Both devices contain ports to connect the devices together via networking cables and to facilitates communication between the devices, but they differ in how they transfer data.
• Identifies the device on the network for which the data is intended and sends the data to that node only
• Can connect Ethernet, token ring, Fiber Channel or other types of packet switched network segments together to form an inter
network
6. Repeater
• to boost the signal with a device called a repeater. The repeater electrically amplifies the signal it receives and rebroadcasts it.
• can be separate devices or they can be incorporated into a concentrator.
• used when the total length of your network cable exceeds the standards set for the type of cable being used.
7. Bridges
• A bridge monitors the information traffic on both sides of
the network so that it can pass packets of information to the correct location. The bridge manages the traffic tomaintain optimum performance on both sides of the network
• It keeps information flowing on both sides of the network, but it does not allow unnecessary traffic through.
• Can be used to connect different types of cabling, or physical topologies. They must be between networks with the same protocol.
• A network bridge connects multiple network segments.
8. Routers
• Connectors that used to link different networks
• translates information from one network to another; it is similar to a superintelligent bridge.
• select the best path to route a message, based on the destination address and origin.
• direct traffic to prevent head-on collisions, and is smart enough to know when to direct traffic along back roads and shortcuts.
Network Hardware / Equipment
Networking hardware includes all computers, peripherals, interface cards and other equipment needed to perform data-processing and communications within the network.
Dalam topik ini, saya telah belajar dan mengetahui ada 8 kesemuanya jenis-jenis Network Hardware / Equipment iaitu :
1. File Server
• A file server stands at the heart of most networks.
• very fast computer
• large amount of RAM and storage space,
• a fast network interface card.
• network operating system software resides on this computer, along with any software applications and data files that need to be shared.
2. Workstation
• user computers that is connected to a network are called workstations.
• configured with a network interface card, networking software, and the appropriate cables.
• do not necessarily storage capability , files can be saved on the file server.
• almost any computer can serve as a network workstation.
3. Network Interface Cards
• provides the physical connection between the network and
the computer workstation.
• major factor in determining the speed and performance of a
network
• Most NICs are internal, with the card fitting into an expansion
slot inside the computer.
• Some computers, such as Mac Classics, use external boxes which are attached to a serial port or a SCSI port.
• Laptop computers - built-in NIC or network cards that slip into a PCMCIA slot.
• The three most common network interface connections are
– Ethernet cards,
– LocalTalk connectors
– Token Ring cards.
4. Concentrator/Hubs
• Central connection point
• Transmit all data received to all node connected to the hub. Regardless to which device the data being sent to
• Lots of extra network traffic, network less efficient
Both devices contain ports to connect the devices together via networking cables and to facilitates communication between the devices, but they differ in how they transfer data.
• Identifies the device on the network for which the data is intended and sends the data to that node only
• Can connect Ethernet, token ring, Fiber Channel or other types of packet switched network segments together to form an inter
network
6. Repeater
• to boost the signal with a device called a repeater. The repeater electrically amplifies the signal it receives and rebroadcasts it.
• can be separate devices or they can be incorporated into a concentrator.
• used when the total length of your network cable exceeds the standards set for the type of cable being used.
7. Bridges
• A bridge monitors the information traffic on both sides of
the network so that it can pass packets of information to the correct location. The bridge manages the traffic tomaintain optimum performance on both sides of the network
• It keeps information flowing on both sides of the network, but it does not allow unnecessary traffic through.
• Can be used to connect different types of cabling, or physical topologies. They must be between networks with the same protocol.
• A network bridge connects multiple network segments.
8. Routers
• Connectors that used to link different networks
• translates information from one network to another; it is similar to a superintelligent bridge.
• select the best path to route a message, based on the destination address and origin.
• direct traffic to prevent head-on collisions, and is smart enough to know when to direct traffic along back roads and shortcuts.
Selepas belajar mengenai jenis-jenis Network Hardware/Equipment kami semua telah diberikan tugasan iaitu Setup Network oleh Dr. Norasyikin iaitu membuat lakaran dan ahli kumpulan saya yang terdiri daripada Shahirah, Fatehah dan Vivian telah membuat lakaran tersebut seperti gambarajah di bawah.
