Exam 200-901 topic 1 question 74 discussion

Actual exam question from Cisco's 200-901

Question #: 74
Topic #: 1

[All 200-901 Questions]

Which two statements describe the traits of an asynchronous API call? (Choose two.)

A. Code execution blocks or waits for the call to an API to return.
B. A callback function typically is used to process the response from an API call.
C. A call to an API does not block the code, but rather it allows application processing to continue.
D. The end user can experience latency or performance lag while waiting for the API call to return.
E. The order in which API calls return can be guaranteed.

Show Suggested Answer

Suggested Answer: BC 🗳️

by blinksink at Dec. 30, 2020, 11:24 a.m.

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blinksink

Highly Voted 3 years, 10 months ago

BC are correct: Asynchronous calls do not block (or wait) for the API call to return from the server. Execution continues on in your program, and when the call returns from the server, a “callback” function is executed.

upvoted 12 times

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Tejas007

Most Recent 1 month ago

Selected Answer: BC

Option B & C are right.

upvoted 1 times

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iLikeHamburgers

6 months ago

200-901 OCG pg 132 ".. they (Asynchronous APIs) do not wait until a response is received prior to continuing to function and process other aspects of data. Asynchronous APIs provide a callback function so that the API response can be sent back at another time, without the application having to wait for the entire transaction to complete."

upvoted 1 times

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macxsz

2 years, 4 months ago

Selected Answer: BC

C is obviously one of them. The other I think its B

upvoted 2 times

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ionycash

3 years, 4 months ago

I think is another Tricky question... The key word is "trait" Everyone has experimented slow responses on async http (facebook/twitter) when keeps waiting for the requested info.