What is the most commonly used tool used to restrict access to a computer system?

Question

BlackTom AI · Accepted Answer

When considering what is most commonly used to restrict access to a computer system, we start by evaluating the typical methods used in everyday security setups.
Option 1: token identification. While tokens (like smart cards or USB keys) are common in certain corporate environments, they are not as universally deployed as basic credential methods across all systems. They also require physical possession, which adds a layer of convenience and risk that not all organizations prefer for every user.
Option 2: signature identification. This method is not a standard or widely adopted mechanism for general computer access. Signature-based systems are more aligned with verifying documents or specific authentication events but are not a mainstream method for unlocking a computer.
Option 3: biometric identification. Biometric methods (fingerprint, facial recognition, iris scans) are increasingly popular and offer strong security, but their deployment is not yet universal due to cost, privacy concerns, and hardware requirements. Therefore, they are not the most commonly used across all systems.
Option 4: passcode identification. A passcode (or PIN/password) is the simplest, most ubiquitous method for restricting access to computer systems. It does not require special hardware beyond a keyboard and screen and is widely implemented in both personal and organizational contexts. This ubiquity makes it the most commonly used tool among the options provided.
In summary, while other methods exist and are used in specific scenarios, passcode identification remains the foundational and most widely deployed approach for basic access control across many computer systems.

CSE-3-01 Quiz #4 (Week 8-10 readings)

What is the most commonly used tool used to restrict access to a computer system?

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