Final answer:
The user id in a system should be unique, confidential, and preferably complex. The user id Lakshmi presents must be unique, ensuring her identity is singularly represented within the system. Confidentiality, complexity, and length are key attributes of secure passwords rather than user ids. The correct answer is C.
Step-by-step explanation:
The user id in a system should have the following characteristics:
Uniqueness: The user id should be unique to each user so that there are no conflicts or confusion.
Confidentiality: The user id should be kept confidential and not shared with anyone to ensure the security and privacy of the user's account.
Complexity: While not explicitly mentioned in the options, it is recommended for the user id to be complex, consisting of a combination of letters, numbers, and symbols to make it more difficult to guess or crack.
The user id Lakshmi presents must be unique, ensuring her identity is singularly represented within the system. Confidentiality, complexity, and length are key attributes of secure passwords rather than user ids.
When Lakshmi presents a user id and password to a system to log on, the user id must be unique. Uniqueness ensures that each user id represents only one individual, preventing any confusion or overlap between users in the system. While confidentiality, complexity, and length are important characteristics of passwords, they are not required for user ids. User ids are typically public identifiers, while passwords should be kept confidential and complex to protect security.