Question

1. Explain the advantages of spread spectrum over narrowband transmissions.

2. Describe PLCP and PMD as they relate to the OSI physical layer.

3. Describe the 3 different WLAN service sets.

4. List and describe the 3 main types of wireless MAC frames.

5. Explain the 3 major functions of the MAC layer with wireless LANs.

6. Differentiate between authentication and association.

7. Summarize how active and passive scanning differ.

Answer 1

As per the Chegg Guidelines, among multiple questions, the first needs to be answered. Therefore, the solution of 1. is provided below:

1.

Solution:

• Spread-spectrum signals are fairly immune to narrowband interference. The technique of re-amassing a diffusion sign spreads out the interfering signal, inflicting it to recede into the history.
• Spread-spectrum indicators are difficult to intercept.
• An unfold-spectrum signal may truly seem like a boom inside the history noise to a narrowband receiver.
• An eavesdropper may additionally have problem intercepting a transmission in real-time if the pseudorandom sequence isn't recognized.
• Spread-spectrum transmissions can percentage a frequency band with many kinds of traditional transmissions with minimum interference.

//Kindly post the rest of the questions for answers.