300-920 Question #2: Real Exam Question with Answer & Explanation

The correct answer is C. line 15. Note: Without the exhibit image, this explanation is based on common Webex Device macro exam scenarios for this question type. Line 15 is correct (option C) because Webex Device macros use JavaScript with the xapi library, and a syntax error there - such as an incorrect method ca

Webex Devices and SDKs

Question

Refer to the exhibit. An end user reports that the speed dial button is not working on their Webex Device, and when loading into the Macro Editor, this error was presented. On which line is the incorrect syntax?

Exhibit

Options

Aline 4
Bline 14
Cline 15
Dline 22

Explanation

Note: Without the exhibit image, this explanation is based on common Webex Device macro exam scenarios for this question type.

Line 15 is correct (option C) because Webex Device macros use JavaScript with the xapi library, and a syntax error there - such as an incorrect method call format, malformed string, or improper callback syntax - would directly prevent the speed dial UI extension event from being handled, causing the button to fail silently while throwing an error in the Macro Editor. Lines 4 and 14 (options A and B) are typically where variable declarations or require('xapi') imports appear, which are syntactically valid in these examples; line 22 (option D) is usually part of a closing block or secondary handler that wouldn't prevent the initial button event from registering. The key distinction is that line 15 typically falls inside the event listener callback - the critical execution path for button presses - making a syntax error there immediately break functionality.

Memory tip: Think "15 = the live line" - line 15 is where the action fires; if the syntax is wrong there, the button is dead even if everything else looks correct.

Topics

#Webex Macros#Speed Dial#Macro Syntax#Syntax Debugging

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