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WorksheetsQuiz 1
Total questions: 11
Worksheet time: 6mins
___________are the three fundamental goals of information security
Confidentiality, Integrity, and Availability
Classic cryptography , and
Symmetric ciphers
Public key , and cryptography
Multilevel security, and Firewalls, Authorization
In cryptography, what is cipher?
algorithm for performing encryption and decryption
encrypted message
both (a) and (b)
none of the mentioned
. In asymmetric key cryptography, the private key is kept by _____.
sender
receiver
sender and receiver
all the connected devices to the network
Cryptanalysis is used ______.
to find some insecurity in a cryptographic scheme
to increase the speed
to encrypt the data
none of the mentioned
A denial of service attack
can erase an entire Web site.
does not have to occur over a network.
is an intentional attempt to overload a Web server or Web site.
all of the above.
Authentication is
Passwords
Biometrics
Other methods of authentication
All of the above
Authorization is
Access Control Lists/Capabilities
Firewalls, intrusion detection (IDS)
Multilevel security (MLS),
All of the above
Cryptosystem is secure if
if best know attack is to try all keys Exhaustive key search
if any
shortcut attack is known
All of the above
Cryptosystem is insecure
if any shortcut attack is known
is to try all keys Exhaustive key search,
All of the above
Playfair Key Matrix based on a keyword filling in the letters of the keyword
No duplicates letters
Duplicates letters
All of the above
Which of the following requires one keys that are used by the sender and receiver to encode a message?
Digital signature encryption
B. Public key encryption
Private key encryption
Virtual key encryption
