Intro to java 9 review

What determines the perceived speed of a communication channel?

• Bandwidth

• Latency

• Throughput

• Jitter

What is the speed at which electronic signals travel?

• 300,000 km/sec

• 186,000 miles/sec

• 1,000 miles/sec

• Speed of light

Which of the following has the highest speed?

• Copper Cable

• Coaxial Cable

• Fiber Optics

• DSL

What is the recommended bandwidth for streaming 1080p video?

• 1-3 Mbps

• 3-5 Mbps

• 5-8 Mbps

• 10-15 Mbps

What is the primary purpose of a router in a network?

• Connect devices

• Route messages between devices

• Provide internet access

• Filter traffic

Which device converts signals into sound?

• Microphone

• Speaker

• Headphones

• Amplifier

What is the role of a VPN?

• Encrypt data

• Create a secure connection in a public network

• Hide IP address

• Bypass firewalls

What powers an RFID tag?

• Battery

• Radio waves

• Magnetic field

• Solar energy

What is the main disadvantage of coaxial cables?

• Higher cost

• Slower speeds than fiber optics

• Limited distance

• Interference

Which wireless technology is best for short-range, high-speed communication?

• WiFi

• Bluetooth

• Zigbee

• NFC