IT management
Learn about the core elements of IT management, including operations, tech support and personal computing, as well as terms related to IT careers, certifications and project management.

Certifications
This glossary contains definitions related to IT Certifications.
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What is Cisco Certified Internetwork Expert (CCIE) certification?
Cisco Certified Internetwork Expert (CCIE) certification is a series of technical certifications for senior networking professionals who design, build, implement, maintain and troubleshoot complex enterprise networking infrastructures.
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What are CPE (continuing professional education) credits?
Continuing professional education, or CPE, credit is a term referring to the points professionals receive for participating in specialized training in IT and other fields.
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What is a cloud architect and how do you become one?
A cloud architect is an IT professional who is responsible for overseeing a company's cloud computing strategy.
IT career paths
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What is a chief product officer (CPO)?
A chief product officer (CPO) is a C-level executive responsible for the overall product strategy, development, and performance within an organization.
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What is a change agent (agent of change)?
A change agent, or agent of change, is someone who promotes change and enables it to happen within any group or organization.
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What is the gig economy?
A gig economy is a free market system in which temporary positions are common and organizations hire independent workers for short-term commitments.
IT Operations
Terms related to the processes and services implemented and managed by an organization’s information technology (IT) department. Topics covered include systems management, configuration management, API management and DevOps, as well as real-time performance monitoring and management.
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What is change control?
Change control is a systematic approach that includes the various steps needed to process changes made to a product or system.
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What is bit (binary digit) in computing?
A bit (binary digit) is the smallest unit of data that a computer can process and store. It can have only one of two values: 0 or 1.
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What is a compliance framework?
A compliance framework is a structured set of guidelines that details an organization's processes for maintaining accordance with established regulations, specifications or legislation.
Personal computing
Terms related to personal computers, including definitions about computers sold as consumer products and words and phrases about laptops, tablets and smartphones.
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What is PC as a service (PCaaS)?
PC as a service (PCaaS) is a device lifecycle management model in which an organization pays a monthly subscription fee to lease endpoint hardware (PCs) and management services from a vendor instead of purchasing them outright.
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What is A2P messaging (application-to-person messaging)?
A2P messaging (application-to-person messaging) is a type of SMS messaging technique in which a person receives text messages from a software application rather than from another user.
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Apple watchOS (Apple Watch operating system)
Apple watchOS is the operating system (OS) designed specifically for the Apple Watch wearable device, with features that take advantage of the smaller screen and location of the device on the user's wrist.
Project management
Terms related to project management, including definitions about project management methodologies and tools.
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What is change control?
Change control is a systematic approach that includes the various steps needed to process changes made to a product or system.
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What is an IT strategic plan (information technology strategic plan)?
An IT strategic plan is a document that details the comprehensive technology-enabled business management processes an organization uses to guide operations.
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What is a chief risk officer (CRO)? A detailed CRO job description
The chief risk officer (CRO) is a senior executive tasked with assessing, overseeing and mitigating an organization's risks.
Technical support
Terms related to computer fundamentals, including computer hardware definitions and words and phrases about software, operating systems, peripherals and troubleshooting.
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What is computer room air conditioning (CRAC)? CRAC vs. CRAH unit differences?
A computer room air conditioning (CRAC) unit is a device that monitors and maintains the temperature, air distribution and humidity in a data center, network or server room.
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What is bit (binary digit) in computing?
A bit (binary digit) is the smallest unit of data that a computer can process and store. It can have only one of two values: 0 or 1.
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What is binary and how is it used in computing?
Binary describes a numbering scheme in which there are only two possible values for each digit -- 0 or 1 -- and is the basis for all binary code used in computing systems.