Test Bank - Cryptography and Network Security: Principles and Practice, 8th edition by William Stallings, All Chapters

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Test Bank for Cryptography and Network
Security: Principles and Practice, 8th edition
byWilliam Stallings
N

All Chapters (1-10)
U
R
SE

♦️♦️♦️INSTANT DOWNLOAD
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♦️♦️♦️COMPLETE CHAPTERS
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♦️♦️♦️COMPLETE ANSWERS
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CHAPTER 1: COMPUTER AND NETWORK SECURITY CONCEPTS


TRUE OR FALSE


T F 1. The OSI security architecture focuses on security attacks,
mechanisms, and services.

T F 2. Security attacks are classified as either passive or aggressive.
N
T F 3. Cybersecurity strives to ensure the attainment and maintenance of
the security properties of the organization and users’ assets against
U
relevant security risks in the cyberspace environment.

T F 4. Information security and network security are subsets of
cybersecurity.
R
T F 5. Data authenticity assures that private or confidential information is
not made available or disclosed to unauthorized individuals.
SE
T F 6. The OSI security architecture focuses on security attacks,
mechanisms, and services.

T F 7. An active attack attempts to alter system resources or affect their
operation.
D
T F 8. Authentication exchange is the use of a trusted third party to
assure certain properties of a data exchange.
O
T F 9. A loss of integrity is the unauthorized modification or destruction
of information.
C
T F 10. The emphasis in dealing with active attacks is on prevention
rather than detection.
S
T F 11. The connection-oriented integrity service addresses both
message stream modification and denial of service.

T F 12. The denial of service prevents or inhibits the normal use or
management of communication facilities.

T F 13. Integrity can apply to a stream of messages, a single message, or



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selected fields within a message.


T F 14. Passive attacks are very easy to detect because they involve
alteration of the data.

T F 15. Security services implement security policies and are
implemented by security mechanisms.


MULTIPLE CHOICE
N

1. is the collection of tools, policies, security concepts, security
U
safeguards, guidelines, risk management approaches, actions, training, best
practices, assurance, and technologies that can be used to protect the
cyberspace environment and organization and users’ assets.
R
A) Access control B) Data authenticity

C) Cybersecurity D) Authentication
SE

2. A common technique for masking contents of messages or other information
traffic so that opponents can not extract the information from the message is
.
D
A) integrity B) encryption

C) analysis D) masquerade
O

3. involves the passive capture of a data unit and its subsequent
C
retransmission to produce an unauthorized effect.

A) Disruption B) Replay
S
C) Service denial D) Masquerade


4. is a branch of mathematics that deals with the transformation of data.

A) Cryptography B) Modularity




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C) Encapsulation D) Encryption


5. A loss of is the unauthorized disclosure of information.

A) authenticity B) confidentiality

C) reliability D) integrity


6. Verifying that users are who they say they are and that each input arriving at
N
the system came from a trusted source is .

A) authenticity B) credibility
U
C) accountability D) integrity
R
7. A is a value computed with a cryptographic algorithm and associated
with a data object in such a way that any recipient of the data can use the
signature to verify the data’s origin and integrity.
SE
A) key exchange B) digital signature

C) message authentication code D) notarization
D
8. A is any action that compromises the security of information owned
by an organization.
O
A) security attack B) security service

C) security alert D) security mechanism
C
9. A takes place when one entity pretends to be a different entity.
S
A) replay B) masquerade

C) service denial D) passive attack


10. is the protection of transmitted data from passive attacks.




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