Cables Flashcards
What is an unshielded twisted pair cable?
The most commonly used transmission media for a wired network, unshielded twisted pair cables contain one or more twisted-pair insulated copper wires bundled together. The wires are twisted together to reduce noise; an electrical disturbance that can degrade communications.
What is a fibre-optic cable?
Fibre-optic cables are made up of ultra-thin optical fibres and a core of hundreds of thin strands of glass or plastic that use light to transmit signals.
What are the ADVANTAGES of unshielded twisted-pair cables over fibre-optic cables?
Advantages:
- Cheaper than fibre-optics
- More affordable maintenance
- Easier installation
What are the DISADVANTAGES of unshielded twisted-pair cables over fibre-optic cables?
Disadvantages:
- Slower data transmission
- Carry significantly less cables than fibre optics
- Shorter distance transmission coverage than fibre optics.
What are the ADVANTAGES of wired networks over wireless networks?
Advantages:
- Faster data transfer speeds
- Better security, as signals are not easily as tapped
- More reliable connection, as there is less interference
What are the DISADVANTAGES of wired networks over wireless networks?
Disadvantages:
- Lack of mobility due to the physical connection of the cables
- Takes more time and effort to install
- Higher maintenance due to potential cable replacement or disconnection
What is the National Broadband Network (NBN)?
The NBN aims to connect homes in Australia to the internet, and provide them with high-speed internet and telephone access. By using nodes connecting to the internet via fibre-optic cables in various streets, hybrid cables and copper telephone networks carry internet signals to nearby homes and businesses from there.
