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Computer network
-Files can be transferred easily
-You can connect with other devices
It stores data centrally
- Can easily get hacked
- Virus is spread easily
- If the server breaks down, the computer will shut down
There are 5 types of computer networks: Personal area network (PAN), Local area network (LAN), Wireless local area network (WLAN), Metropolitan area network (MAN) and Wide area network (WAN)
- A personal area network (PAN) connects electronic devices within a user's immediate area.
- PAN network connections can either be wired (USB and FireWire)or wireless(Bluetooth, WiFi, IrDA, and Zigbee.)
- Less expensive
- Data protection
- Easy to use
- Reliable and stable
- No need additional space
- Limited area
- Slow data transmission
- Interfere with radio signals
- Higher expensive devices
- Communication among personal devices
- Connecting personal devices to a higher-level network and the Internet
- Short-range communication
- Data transfer within a personal area network.
- They proved wireless network communications over short distances using radio or infrared signals instead of using cables.
- Access points are connected into a wired which enables wireless stations to connect to a local area network.
- Easier to expand the networks
- Safety imporvement and increased flexibility
- Increased chance of interference from external sources
- Data is less secured
- Slow rate of data transmission
- Signals can be stopped by thick walls
- Higher cost
- Reliable communication
- Versatile communication
- Reduced cost of ownership
- Easier to add or remove workstation
- High rate due to small area coverage
They are usually within one building or near to each other. It consists of computers and devices connected to hubs or switches which is connected to a router to allow LAN connected to extrenal networks.
Pros
Network administrator ensuring security
- They allow the sharing of resources such as hardware and software.
- They premit easy communication between users.
- They use a network administrator that ensures security
Cons
Virus spread across the internet
- Easier spread of viruses
- Queues for shared resources
- Slower access to external networks
- increased security risk
- if main server breaks down, the network will no longer function properly
Uses
Easy transfer of data and emails
- Provide resource sharing.
- Transfer data and e-mail.
- Improve the reliability of the computer system.
- Connect computers together.
It is a computer network that connects computers within a single large city, multiple cities and towns. It is larger than a local area network (LAN) but smaller than a wide area network (WAN).
- Allows users to share their internet connections
- less expensive than WAN.
- has high speed than WAN.
- provides high effiency data transmission.
- Manages data in a central part.
- Not easily maintained.
- High chance of getting hacked.
- Requires highly trained staff and tools.
- Cannot work in traiditional phone
- Connect computer networks across cities
- Build networks with high data connection speeds for cities and towns
- Provide shared network connections
- Interconnect the local area network
They are used where computers or networks are situated a long distance from each other. Its is created when a number of LANs are joined together using a router
- Share resources
- Scalability and flexibility
- Cost reduction
- Access to a wide range of services
- Improved security
- Increased latency
- Higher cost
- security risks
- slower issues
- complexity
- Communicate using voice & video
- Share resources between customers and employees
- Access data storage and remotely back up data
- Connect to applications running in the cloud
- Run and host internal applications
Wired and wirless are two methods of connecting devices and transferring data. Wired networks use cables while wireless networks use radio signals.
PROS
CONS
Cabled networks lose the ability for devices to be mobile
- Uses cables which can produce a more reliable and stable network
Having lots of wires can lead to hazards, such as tripping, overheating and disconnection of cables
- Data transfer rate tend to be faster
Less convenient and secure
- Setting up cabled networks tend to be more cheaper.
PROS
CONS