Networks and the Internet

What is the core protocol of computer networks?

• HTTP
• TCP/IP
• FTP
• SMTP

Which of the following is an example of a guided transmission medium?

• Radio waves
• Infrared light
• Fiber-optic cable
• Bluetooth

What does the term 'attenuation' refer to in transmission media?

• Signal interference
• Signal weakening over distance
• Error correction
• Increasing bandwidth

Which type of cable is surrounded by a metal shield to reduce noise?

• Twisted pair
• Coaxial cable
• Fiber-optic cable
• DSL cable

Which IEEE standard is commonly used for wireless networking?

• IEEE 802.3
• IEEE 802.5
• IEEE 802.11
• IEEE 802.15

What is the main benefit of wireless technology?

• Increased cabling costs
• Device mobility or portability
• Slower transmission speeds
• Requires physical wiring

What is the main advantage of fiber-optic cables over copper wires?

• Higher resistance to interference
• Higher latency
• Lower bandwidth
• More susceptible to attenuation

What is the purpose of a protocol in networking?

• To physically connect devices
• To facilitate communication between devices
• To store data
• To eliminate data loss completely

Which of the following is NOT a function of the Transport layer in the OSI model?

• Fault detection
• Flow control
• Physical addressing
• Error recovery

In the OSI model, which layer is responsible for path selection and connectivity?

• Physical
• Data Link
• Network
• Transport