100-150 Question 14
Single answerA user reports that they are unable to access a website. You are investigating the issue and find that the website's server is not responding to HTTP requests. To troubleshoot further, you decide to analyze network traffic using a packet capture tool. At which layer of the TCP/IP model would you examine the HTTP traffic, and what type of addressing would you use to identify the website's server?
- A
Application layer; IP address
- B
Transport layer; MAC address
- C
Network layer; IP address
- D
Data Link layer; MAC address
Show answer and explanation
Correct answer: A
Explanation
To troubleshoot HTTP traffic, you need to analyze data at the Application layer of the TCP/IP model, where HTTP operates. IP addressing is used to identify the website's server within the Network layer for routing purposes. Understanding the relationship between layers and addressing is critical for diagnosing connectivity issues.
- A. Correct.
Correct: HTTP traffic is part of the Application layer in the TCP/IP model. To identify the destination (the website's server), you would use an IP address, which is part of the Network layer addressing.
- B. Incorrect.
Incorrect: The Transport layer handles segmenting data and managing connections (e.g., TCP or UDP), not the specific HTTP traffic itself. MAC addresses are used at the Data Link layer, not for identifying remote servers.
- C. Incorrect.
Incorrect: While the Network layer uses IP addresses, examining HTTP traffic specifically occurs at the Application layer, not the Network layer.
- D. Incorrect.
Incorrect: The Data Link layer uses MAC addresses for local network communication, which is not relevant to troubleshooting HTTP traffic between a user and a website's server.