CYBR 7400 Study Guide Questions with
Correct Answers
A(n) __________ is a potential for violation of security, which exists when there is a
circumstance, capability, action or event that could breach security and cause harm.
threat
Data origin authentication does not provide protection against the modification of data
units. T/F
True
__________ prevents either sender or receiver from denying a transmitted message.
Thus, when a message is sent, the receiver can prove that the alleged sender in fact sent
the message and when a message is received, the sender can prove that the alleged
receiver in fact received the message.
Nonrepudiation
In the context of network security, ___________ is the ability to limit and control the
access to host systems and applications via communications links.
access control
A loss of _________ is the unauthorized modification or destruction of information.
integrity
Symmetric encryption is used to conceal the contents of blocks or streams of data of any
size, including messages, files, encryption keys, and passwords. T/F
True
An __________ attack attempts to alter system resources or affect their operation.
, active
The data integrity service inserts bits into gaps in a data stream to frustrate traffic
analysis attempts. T/F
False
An _________ is a branching, hierarchical data structure that represents a set of
potential techniques for exploiting security vulnerabilities.
attack tree
Security attacks are classified as either passive or aggressive. T/F
False - passive or active
A common technique for masking contents of messages or other information traffic so
that opponents can not extract the information from the message is __________.
encryption
A loss of __________ is the unauthorized disclosure of information.
confidentiality
Authentication protocols and encryption algorithms are examples of security
mechanisms. T/F
True
__________ is the most common method used to conceal small blocks of data, such as
encryption keys and hash function values, which are used in digital signatures.
Asymmetric encryption
Correct Answers
A(n) __________ is a potential for violation of security, which exists when there is a
circumstance, capability, action or event that could breach security and cause harm.
threat
Data origin authentication does not provide protection against the modification of data
units. T/F
True
__________ prevents either sender or receiver from denying a transmitted message.
Thus, when a message is sent, the receiver can prove that the alleged sender in fact sent
the message and when a message is received, the sender can prove that the alleged
receiver in fact received the message.
Nonrepudiation
In the context of network security, ___________ is the ability to limit and control the
access to host systems and applications via communications links.
access control
A loss of _________ is the unauthorized modification or destruction of information.
integrity
Symmetric encryption is used to conceal the contents of blocks or streams of data of any
size, including messages, files, encryption keys, and passwords. T/F
True
An __________ attack attempts to alter system resources or affect their operation.
, active
The data integrity service inserts bits into gaps in a data stream to frustrate traffic
analysis attempts. T/F
False
An _________ is a branching, hierarchical data structure that represents a set of
potential techniques for exploiting security vulnerabilities.
attack tree
Security attacks are classified as either passive or aggressive. T/F
False - passive or active
A common technique for masking contents of messages or other information traffic so
that opponents can not extract the information from the message is __________.
encryption
A loss of __________ is the unauthorized disclosure of information.
confidentiality
Authentication protocols and encryption algorithms are examples of security
mechanisms. T/F
True
__________ is the most common method used to conceal small blocks of data, such as
encryption keys and hash function values, which are used in digital signatures.
Asymmetric encryption
