Final answer:
A deficiency in computer systems controls is demonstrated when multiple users share a single password, leading to potential unauthorized access and problems with accountability.
Step-by-step explanation:
An example of how computer systems would be considered deficient in controls that are needed to assure consistent operation is the situation where 'All laboratory analysts share the same password for the computer which runs the AKTA which is used for protein separation'. This practice is deficient in information security controls, as it can lead to unauthorized access and lacks accountability for actions taken on the system. A robust control would require individual accounts and passwords for each user to track data and system access adequately.