meaning of interfacing, insertion, intercalation

[Pedro]

Business English Lesson, Advanced Level

ESL/EFL Test #225 "Accounting Information Systems", question 3

Customization allows for a good fit to the business's needs, smooth ......... with other internal systems, and the ability to implement special security measures.

(a) insertion
(b) intercalation
(c) interfacing
(d) interference

Business English Lesson, Advanced Level

ESL/EFL Test #225 "Accounting Information Systems", answer 3

Customization allows for a good fit to the business's needs, smooth interfacing with other internal systems, and the ability to implement special security measures.

Correct answer: (c) interfacing
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some of this words I don't have seened, but i can have some ideas like what they talking about

Pedro

[Alan]

Have a look at the original:

http://pigseye.kennesaw.edu/~jseiz1/ais.htm

A
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English as a Second Language
You can read my ESL story Phrasal Verbs/take