I believe the answer is <span>annual maintenance
</span><span>annual maintenance refers to the system maintenance that being done at a regular time period (most commonly done at least every 6 month)
This is really necessary in order to detect potential virus/malware that would compromise the information within your computer.</span>
Answer:
an error message
Explanation:
The return value is the value which is sent back by the function to a place in the code from where the 
was called from. Its main work is to return a value form the function.
In the context, the form of "(symbol-length? 'James)" in Scheme will return the value --- ' an error message'.
Answer:
A varying infrastructure.
Explanation:
The competitive pressure it creates for multinational companies in the industry is one of difference in infrastructure because different technical standards are found in different parts of the world.
For instance, A technical standard known as Global Systems for Mobile (GSM) is common in Europe, and an alternative standard, Code Division Multiple Access (CDMA), is more common in the United States and parts of Asia.
Consequently, equipment designed for GSM will not work on a CDMA network and vice versa as a result of varying infrastructure, so companies would be innovative in order to improve on their products.
Chchvjvcuvggiiog. Correct
