100-150 Question 19
Single answerA network administrator is troubleshooting a file transfer issue between two devices. The ISP guarantees a maximum bandwidth of 100 Mbps for the connection, but the user reports that the file transfer speed is consistently around 60 Mbps. What does this scenario primarily illustrate?
- A
The file transfer speed is limited by the throughput, which is affected by network conditions.
- B
The bandwidth of the connection is insufficient for the file transfer.
- C
The throughput exceeds the available bandwidth, causing performance issues.
- D
The file transfer speed is impacted by the ISP's failure to provide the promised bandwidth.
Show answer and explanation
Correct answer: A
Explanation
This scenario demonstrates the difference between bandwidth and throughput. Bandwidth is the maximum capacity of a connection, while throughput is the actual data transfer rate achieved under real-world conditions. In this case, the file transfer speed (throughput) is lower than the maximum bandwidth due to factors like network congestion or protocol limitations.
- A. Correct.
This is correct. Throughput measures the actual data transfer rate and can be lower than the maximum bandwidth due to factors such as network congestion, latency, or protocol overhead.
- B. Incorrect.
This is incorrect. A bandwidth of 100 Mbps is sufficient, and the issue lies with the actual throughput being lower than the maximum theoretical bandwidth.
- C. Incorrect.
This is incorrect. Throughput cannot exceed the available bandwidth; it is always equal to or less than the bandwidth.
- D. Incorrect.
This is incorrect. The ISP typically guarantees 'up to' the maximum bandwidth, but various factors can cause the throughput to be lower without indicating a failure on the ISP's part.