1.4 - Connectivity Flashcards

1
Q

Why use Copper Cables?

A

Transport electricity more efficiently.

Resistant to corrosion and high thermal resistance.

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2
Q

What are the characteristics of Copper Cables?

A

Limited bandwidth - cannot transmit much data.

Less expensive when connecting to network devices and high attenuation.

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3
Q

What is a key feature of Fibre Cables?

A

Very fast wired internet connection.

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4
Q

What are the characteristics of Fibre Optic Cables?

A

Expensive.

Faster transmission than copper, high bandwidth - more data, and less attenuation / signal loss.

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5
Q

What are some Wireless Technologies?

A

Bluetooth, infrared, microwave, laser, satellite, GSM/5G.

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6
Q

What are the characteristics of Wireless Technology?

A

Signals degrade with distance.

Infrastructure does not cover all remote areas.

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7
Q

What is Bluetooth?

A

Short range communication - 10 metres.

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8
Q

What is Infrared?

A

Device needs to be in line of sight.

Short distance - remote.

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9
Q

What is Microwave technology?

A

Used with microwave towers.

Sends signals across large areas / large amounts of data but is affected by bad weather - high attenuation.

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10
Q

What is Laser technology?

A

Transmits data up to 2km as long as there is no barrier, needs to be in line of sight.

Bad weather severely affects transmission.

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11
Q

What is Satellite communication?

A

Point to multipoint communication (channel is shared among multiple devices/nodes).

Large distance between communication device and satellite causes delay in transmission.

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12
Q

What is GSM / 5G?

A

Connect to a network for network calls.

Supports messages/voice calls, good compatibility with other devices, but has insufficient coverage in some areas - unstable communication and security protection isn’t that strong.

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