Chapter 4: Network Security Exam
Questions and Answers Graded A+
Application programming interface (API) - Correct answer-A set of routines,
standards, protocols, and tools for building software applications to access a web-
based software application or web tool.
Bit - Correct answer-The most essential representation of data (zero or one) at
Layer 1 of the Open Systems Interconnection (OSI) model.
Broadcast - Correct answer-Broadcast transmission is a one-to-many (one-to-
everyone) form of sending internet traffic.
Byte - Correct answer-The byte is a unit of digital information that most commonly
consists of eight bits.
Cloud computing - Correct answer-A model for enabling ubiquitous, convenient,
on-demand network access to a shared pool of configurable computing resources
(e.g., networks, servers, storage, applications, and services) that can be rapidly
provisioned and released with minimal management effort or service provider
interaction. NIST 800-145
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, Community cloud - Correct answer-A system in which the cloud infrastructure is
provisioned for exclusive use by a specific community of consumers from
organizations that have shared concerns (e.g., mission, security requirements,
policy and compliance considerations). It may be owned, managed and operated by
one or more of the organizations in the community, a third party or some
combination of them, and it may exist on or off premises. NIST 800-145
De-encapsulation - Correct answer-The opposite process of encapsulation, in
which bundles of data are unpacked or revealed.
Denial-of-Service (DoS) - Correct answer-The prevention of authorized access to
resources or the delaying of time-critical operations. (Time-critical may be
milliseconds or it may be hours, depending upon the service provided.) Source:
NIST SP 800-27 Rev A
Domain Name Service (DNS) - Correct answer-This acronym can be applied to
three interrelated elements: a service, a physical server and a network protocol.
Encapsulation - Correct answer-Enforcement of data hiding and code hiding during
all phases of software development and operational use. Bundling together data
and methods is the process of encapsulation; its opposite process may be called
unpacking, revealing, or using other terms. Also used to refer to taking any set of
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
Questions and Answers Graded A+
Application programming interface (API) - Correct answer-A set of routines,
standards, protocols, and tools for building software applications to access a web-
based software application or web tool.
Bit - Correct answer-The most essential representation of data (zero or one) at
Layer 1 of the Open Systems Interconnection (OSI) model.
Broadcast - Correct answer-Broadcast transmission is a one-to-many (one-to-
everyone) form of sending internet traffic.
Byte - Correct answer-The byte is a unit of digital information that most commonly
consists of eight bits.
Cloud computing - Correct answer-A model for enabling ubiquitous, convenient,
on-demand network access to a shared pool of configurable computing resources
(e.g., networks, servers, storage, applications, and services) that can be rapidly
provisioned and released with minimal management effort or service provider
interaction. NIST 800-145
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, Community cloud - Correct answer-A system in which the cloud infrastructure is
provisioned for exclusive use by a specific community of consumers from
organizations that have shared concerns (e.g., mission, security requirements,
policy and compliance considerations). It may be owned, managed and operated by
one or more of the organizations in the community, a third party or some
combination of them, and it may exist on or off premises. NIST 800-145
De-encapsulation - Correct answer-The opposite process of encapsulation, in
which bundles of data are unpacked or revealed.
Denial-of-Service (DoS) - Correct answer-The prevention of authorized access to
resources or the delaying of time-critical operations. (Time-critical may be
milliseconds or it may be hours, depending upon the service provided.) Source:
NIST SP 800-27 Rev A
Domain Name Service (DNS) - Correct answer-This acronym can be applied to
three interrelated elements: a service, a physical server and a network protocol.
Encapsulation - Correct answer-Enforcement of data hiding and code hiding during
all phases of software development and operational use. Bundling together data
and methods is the process of encapsulation; its opposite process may be called
unpacking, revealing, or using other terms. Also used to refer to taking any set of
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
