____ occurs when someone launches a frequent and unusually large number of information requests to a website.

Coding a message into a form unreadable to an interceptor is called ____.

Probably the easiest way to protect against loss of data is to automatically duplicate all data periodically, a process referred to as data ____.

A ____ "represents" another server for all information requests from resources inside the trusted network.

A ____ is a way to authenticate online messages, analogous to a physical signature on a piece of paper, but implemented with public-key cryptography.

____ are computer files that serve as the equivalent of ID cards by associating one's identity with one's public key.

A(n ) ____ is a set of indivisible transactions that are either all executed or none are - never only some.

To ensure against interruptions in power supply, organizations use ____ systems, which provide an alternative power supply for a short time, as soon as a power network fails.

A ____ is a bogus record in a networked database that neither employees nor business partners would ever access for legitimate purposes.

A ____ is akin to the unique fingerprint of a file.

An issuer of digital certificates is called a(n) ____.

The ____ is a network of computers that are connected to the company's trusted network (such as an intranet) at one end and the untrusted network - the public Internet - at the other end.

Once criminals have a person's identifying details, such as a National Insurance number, driver's licence number, or credit card number, they can pretend to be this person. This crime is called ____.

The best defence against unauthorized access to systems over the Internet is a ____, which is hardware and software that blocks access to computing resources.

A ____ is a server that contains a mirrored copy of a production database (a database that is used for business operations), or one with invalid records.

A(n) ____ characteristic is a unique physical, measurable characteristic of a human being that is used to identify a person.

____ a computer means using some or all of the resources of a computer linked to a public network without the consent of its owner.

In ____, the voltage of the power decreases, or there are very short interruptions in the flow of power.

____ is a set of disks that is programmed to replicate stored data to provide a higher degree of reliability.

One popular tracking tool is the ____: a series of documented facts that help detect who recorded which transactions, at what time, and under whose approval.