What is NOT an advantage of using a remote debugger?
A. Remote debugging allows control of registers and memory
B. Remote debugging provides excellent functional accuracy
C. Remote debugging allows good run control
D. Remote debugging requires an extra communication channel for debugging
The correct answer and explanation is:
The correct answer is D. Remote debugging requires an extra communication channel for debugging.
Explanation:
Remote debugging involves using a debugger to analyze and control a program running on a different system, typically over a network. The key advantage of remote debugging is that it allows the developer to debug a program that is running on hardware or in an environment that might not be directly accessible. However, there are specific features that are typically associated with remote debugging.
- A. Remote debugging allows control of registers and memory: This is true. Remote debugging often enables full access to the target machine’s memory and registers, allowing the developer to inspect and manipulate these to diagnose issues effectively. This is especially crucial when debugging low-level hardware or embedded systems.
- B. Remote debugging provides excellent functional accuracy: This is also true. Remote debuggers generally provide detailed insight into how the program functions on the remote system. It allows step-by-step execution, variable inspection, and manipulation, making it highly accurate in terms of understanding the program’s behavior.
- C. Remote debugging allows good run control: This is another advantage of remote debugging. It provides mechanisms to start, pause, step through, or stop the program’s execution remotely. It gives the developer control over the flow of the program, even when it is running on a different system.
- D. Remote debugging requires an extra communication channel for debugging: This is the exception. While remote debugging has many advantages, it also has the drawback of needing an additional communication channel between the local debugger and the remote system. This can introduce latency, bandwidth constraints, or security issues, and is a requirement that does not apply to local debugging where no extra communication channel is necessary.
In summary, the main drawback of remote debugging is the need for an additional communication channel, which can complicate the debugging process or introduce challenges like performance or security concerns.