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1.4 Basic Networking (Hardware (SWITCH (ADVANTAGES (Switches connect…

- - - - Switches connect directly to workstations
      - Networks that include switches experience fewer frame collisions because switches create collision domains for each connection (a process called micro segmentation)
      - Switches increase available network bandwidth
    - - If switches are in promiscuous mode, they are vulnerable to security attacks
      - Network connectivity issues are difficult to be traced through the network switch.
      - more expensive than hub
  - - - It does not affect performance of the network seriously.
      - It is cheaper.
      - It can extend total distance of the network.
    - - It does not have mechanisms such as collision detection and retransmission of packets.
      - It can not filter information i.e. it passes packets to all the connected segments
      - It does not have mechanism to reduce the network traffic
  - - - They are expensive compare to other network devices.
      - Dynamic router communications can cause additional network overhead. This results into less bandwidth for user data.
    - - It can reduce network traffic by creating collision domains and also by creating broadcast domains.
      - It can choose best path across the internetwork using dynamic routing algorithms.
  - - - Most modern mobile telephone devices support WAP
      - No hardware obsolescence(no need for it )
    - - Low speeds, security, and very small user interface
      - Business model is expensive
  - - - allow viruses and hackers to enter your network.
    - - it allows you and your devices to access the internet and communicate with the outside world.
  - - - Fast connection to internet(1Gbps)
      - Network interface cards provide a reliable connection to the Internet
    - - poor mobility
      - Require a Hard Wired Connection
- - - - A VLAN cannot forward traffic to another VLAN
      - The management is complex
    - - reduced broadcast traffic
      - VLANs reduce the need to have routers deployed on a network to contain broadcast traffic
  - - - your connection can suddenly drop
      - Configuration Can Be Difficult If You Don’t Know What You’re Doing
    - - cost effective
      - They also simplify management and access with centralized access control.
  - - - Less distance range
      - Slow data transfer
    - - Cost effective
      - Connect to many devices at a time
  - - - Files and folders cannot be centrally backed up
      - Because each computer might be being accessed by others it can slow down the performance for the user
    - - No need for a network operating system
      - If one computer fails it will not disrupt any other part of the network.
  - - - Security Concerns
      - High setup costs
    - - Centralizes IT infrastructure
      - Increases bandwidth
  - - - The server is expensive to purchase
      - If any part of the network fails a lot of disruption can occur
    - - All files are stored in a central location
      - Backups and network security is controlled centrally
  - - - High Setup Cost
      - Covers Limited Area
    - - Easy and Cheap Communication
      - Centralized Data
- - - - url to ip
  - - - Network Address Translation (NAT)
- - - - good security : need to plug cmputer into a socket
      - no interference with cables
      - high bandwidth 10Gbps
    - - difficult to setup:must run cables throughout the site
      - poor mobility : need to plug computer into socket
      - expensive - cables and installation
  - - - poor security- anyone can access it within range therefore you must use security passwords
      - signals can be affected by walls and other electronic equipment
      - low bandwidth- 600Mbps
    - - cheap cost of wireless access point
      - good mobility - can be accessible from anywhere within range
      - Easy to setup- just need a wireless access point
- - - - the amount of data that can be transmitted per secnd