Browse Definitions:


Networking and communications

  • iSeries Quizzes

    We've gathered a collection of our iSeries quizzes. You'll find quizzes about basic concepts, commands, administration, vocabulary, backup and recovery. Then see, below, our iSeries learning guides and cheat sheets and our larger collection of learning resources.

  • VoIP security threats

    As VoIP becomes increasingly prevalent, so do the threats aimed at subverting its security. Hackers are developing new methods of attack and finding new ways to use established methods. How much do you know about the threats to VoIP security? Take our quiz to find out.

  • Cloud Computing (quiz)

    Test yourself. Test yourself. A tech vocabulary quiz to test knowledge of cloud computing technology, concepts and terms.

  • Streaming media quiz

    A quiz about technologies and terms related to streaming media. How does streaming media work?

  • Quiz: TCP/IP

    Test yourself. A tech vocabulary quiz about TCP/IP teminology.

  • Quiz: Getting Your Message Across the Network

    A quiz about data transmission: Suppose you want to send an e-mail note to someone on the Internet. Which of these do you NOT need: a browser, an Internet service provider, the at sign or an address?

  • Quiz: Ethernet

    A quiz about Ethernet: What happens if two devices on the same Ethernet network determine the network is free, but attempt to transmit data at exactly the same time?

  • Do you speak Geek? A Vital Video Quiz

    Test yourself. A tech vocabulary quiz about video. In video, this is a reduction in data size to save disk space or transmission time.



  • risk map (risk heat map)

    A risk map, also known as a risk heat map, is a data visualization tool for communicating specific risks an organization faces. A...

  • internal audit (IA)

    An internal audit (IA) is an organizational initiative to monitor and analyze its own business operations in order to determine ...

  • pure risk (absolute risk)

    Pure risk, also called absolute risk, is a category of threat that is beyond human control and has only one possible outcome if ...


  • cloud ecosystem

    A cloud ecosystem is a complex system of interdependent components that all work together to enable cloud services.

  • cloud services

    Cloud services is an umbrella term that may refer to a variety of resources provided over the internet, or to professional ...

  • uncloud (de-cloud)

    The term uncloud describes the action or process of removing applications and data from a cloud computing platform.


  • federated identity management (FIM)

    Federated identity management (FIM) is an arrangement that can be made among multiple enterprises to let subscribers use the same...

  • cross-site scripting (XSS)

    Cross-site scripting (XSS) is a type of injection security attack in which an attacker injects data, such as a malicious script, ...

  • firewall

    In computing, a firewall is software or firmware that enforces a set of rules about what data packets will be allowed to enter or...




  • bad block

    A bad block is an area of storage media that is no longer reliable for storing and retrieving data because it has been physically...

  • all-flash array (AFA)

    An all-flash array (AFA), also known as a solid-state storage disk system, is an external storage array that uses only flash ...

  • volume manager

    A volume manager is software within an operating system (OS) that controls capacity allocation for storage arrays.


  • hybrid hard disk drive (HDD)

    A hybrid hard disk drive is an electromechanical spinning hard disk that contains some amount of NAND Flash memory.