Test 1 + 2 + 3 +4 Applied Cryptography -Network
Security Essentials Applications And Standards 6 th
With the introduction of the computer the need for automated tools for
protecting files and other information stored on the computer became
evident. ✔️Ans - True
There is a natural tendency on the part of users and system managers to
perceive little benefit from security investment until a security failure
occurs. ✔️Ans - True
There are clear boundaries between network security and internet
security. ✔️Ans - False
The CIA (Confidentiality, Integrity, Availability) triad embodies the
fundamental security objectives for both data and for information and
computing services. ✔️Ans - True
In developing a particular security mechanism or algorithm one must
always consider potential attacks on those security features. ✔️Ans -
True
A loss of confidentiality is the unauthorized modification or destruction of
information. ✔️Ans - False
Patient allergy information is an example of an asset with a moderate
requirement for integrity. ✔️Ans - False
The more critical a component or service, the higher the level of availability
required. ✔️Ans - True
Data origin authentication provides protection against the duplication or
modification of data units. ✔️Ans - False
The emphasis in dealing with passive attacks is on prevention rather than
detection. ✔️Ans - True
, Data integrity is the protection of data from unauthorized disclosure.
✔️Ans - False
Information access threats exploit service flaws in computers to inhibit use
by legitimate users. ✔️Ans - False
Viruses and worms are two examples of software attacks. ✔️Ans - True
A connection-oriented integrity service deals with individual messages
without regard to any larger context and generally provides protection
against message modification only. ✔️Ans - False
Pervasive security mechanisms are not specific to any particular OSI (Open
Systems Interconnection) security service or protocol layer. ✔️Ans -
True
Public-key encryption is also referred to as conventional encryption,
secret-key, or single-key encryption. ✔️Ans - False
The advantage of a block cipher is that you can reuse keys. ✔️Ans -
True
Ciphertext is the scrambled message produced as output.. ✔️Ans -
True
The security of symmetric encryption depends on the secrecy of the
algorithm, not the secrecy of the key. ✔️Ans - False
The ciphertext-only attack is the easiest to defend against because the
opponent has the least amount of information to work with. ✔️Ans -
True
The Feistel structure is a particular example of the more general structure
used by all symmetric block ciphers. ✔️Ans - True
Smaller block sizes mean greater security but reduced
encryption/decryption speed. ✔️Ans - False
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