Exam 3: User Authentication

__________ allows an issuer to access regional and national networks that connect point of sale devices and bank teller machines worldwide.

A __________ is when an adversary attempts to achieve user authentication without access to the remote host or to the intervening communications path.

Recognition by fingerprint, retina, and face are examples of __________.

The __________ step is presenting or generating authentication information that corroborates the binding between the entity and the identifier.

The most common means of human-to-human identification are __________.

Depending on the application, user authentication on a biometricsystem involves either verification or identification.

With the __________ policy a user is allowed to select their own password, but the system checks to see if the password is allowable.

A __________ attack attempts to disable a user authentication service by flooding the service with numerous authentication attempts.

A __________ authentication system attempts to authenticate an individual based on his or her unique physical characteristics.

To counter threats to remote user authentication, systems generally rely on some form of ___________ protocol.

An individual's signature is not unique enough to use in biometricapplications.

A good technique for choosing a password is to use the first letter ofeach word of a phrase.

__________, in the context of passwords, refers to an adversary's attempt to learn the password by observing the user, finding a written copy of the password, or some similar attack that involves the physical proximity of user and adversary.

The __________ is the pattern formed by veins beneath the retinal surface.

Presenting or generating authentication information that corroborates the binding between the entity and the identifier is the ___________.

Objects that a user possesses for the purpose of user authentication are called ______

The __________ strategy is when users are told the importance of using hard to guess passwords and provided with guidelines for selecting strong passwords.

In a biometric scheme some physical characteristic of the individual ismapped into a digital representation.

Depending on the details of the overall authenticationsystem, the registration authority issues some sort of electronic credential to the subscriber.

Many users choose a password that is too short or too easy to guess.