Understanding Transmission Media in Computer Networks

The video explores the concept of transmission media in computer networks, focusing on both guided (wired) and unguided (wireless) media. It explains the importance of transmission media in data communication, covering types like twisted pair, coaxial, and fiber optic cables, as well as wireless methods such as radio waves, microwaves, and infrared. The video highlights the advantages and limitations of each type, emphasizing their roles in speed, reliability, and security of data transmission.

What is the primary function of transmission media in computer networks?

• To delete data

• To transmit data

• To process data

• To store data

Which of the following is a key advantage of guided media?

• No physical installation required

• High bandwidth capacity

• Low cost

• Susceptibility to interference

Why are twisted pair cables twisted?

• To make them more flexible

• To reduce electromagnetic interference

• To increase their length

• To make them cheaper

What is a major drawback of coaxial cables?

• Low bandwidth capacity

• High flexibility

• Susceptibility to bending

• Low cost

What type of signal do fiber optic cables use to transmit data?

• Microwaves

• Electrical signals

• Radio waves

• Pulses of light

Which of the following is NOT an advantage of fiber optic cables?

• High transmission speed

• High reliability

• Resistance to electromagnetic interference

• Low cost

What is a key characteristic of unguided media?

• Limited to short distances

• Transmits data through electromagnetic waves

• Requires direct line of sight

• Uses physical cables

Which type of unguided media is commonly used for short-range communication like TV remotes?

• Infrared radiation

• Visible light

• Microwaves

• Radio waves

What is a common use of microwaves in wireless communication?

• Fiber optic networks

• Bluetooth devices

• Satellite communication

• AM/FM radio broadcasts

Which type of unguided media can penetrate through walls and other obstacles?

• Infrared radiation

• Microwaves

• Radio waves

• Visible light