Security+ Mock Exam Questions Set 3
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Security+ Mock Exam Questions Cryptography
- 1.Which of the following statements about the SHA (Security Hash Algorithm) are true? Choose two.
- A.
Its latest version is SHA-1
- B.
Its latest version is SHA-4.1
- C.
It is used with encryption protocols
- D.
It is used with networking protocols
- 2.Which of the following are encryption systems? Choose two.
- A.
RC5
- B.
Blowfish
- C.
MAC
- D.
ARP
- 3.Which of the following is true about Public/Private key pairs? Choose two.
- A.
They form an essential part of Website security
- B.
They are used by Certificate security system
- C.
They are a pair of clear text passwords
- D.
They are obsolete.
- 4.RSA is the encryption system used in cellular devices. T/F?
- A.
True
- B.
False
- 5.What is the requirement for cryptography? Choose two.
- A.
To avoid unauthorized access of information being stored
- B.
To avoid unauthorized access of network resources
- C.
To avoid unauthorized access of information being transmitted.
- D.
To avoid unauthorized access of network servers
- 6.Which of the following is responsible for key issues relating to security of inter-bank communications?
- A.
IETF
- B.
ISI
- C.
NSA
- D.
ABA
- 7.Which of the following will be required to perform Cryptanalysis? Choose three.
- A.
Mathematical tools
- B.
Analytical reasoning
- C.
Pattern finding
- D.
Mathematical reasoning
- E.
Advanced calculators
- 8.In symmetric-key encryption, one key will be used for encryption and another will be used for decryption to provide maximum security. T/F?
- A.
True
- B.
False
- 9.When employing Caesar’s Cipher key value of 3, which of the following will be the decrypted equivalent of JGOOQ?
- A.
HELLO
- B.
WHAT
- C.
WHEN
- D.
DATE
- 10.Which of the following is an advantage of using conventional encryption?
- A.
It is the most secure
- B.
It is very fast
- C.
It is economical
- D.
None of the above
- 11.The concept of public key cryptography was introduced by Diffie-Hellman. T/F?
- A.
True
- B.
False
- 12.Which of the following statements about Public Key Cryptography are true? Choose two.
- A.
You need to have a security setup configured on both the sending as well as the receiving ends to implement Public Key Cryptography.
- B.
You do not need an existing security setup
- C.
Public key can only encrypt and private key can only decrypt.
- D.
Public key can encrypt as well as decrypt, private key can only decrypt
- E.
None of the above
- 13.The keys are measured by bytes. T/F?
- A.
True
- B.
False
- 14.A digital signature is synonymous to which of the following?
- A.
Finger print
- B.
Hand written signature
- C.
Blood sample
- D.
None of the above
- 15.When employing message digest, if data does get modified, which of the following will be the result of that modification?’
- A.
The receiving end and the sending end will receive an alert notification
- B.
The resulting digest after data modification will contain a completely different value.
- C.
The messages will be dropped and retransmitted.
- D.
None of the above
- 16.Which of the following are the two key-based algorithms?
- A.
Symmetric algorithm
- B.
Asymmetric algorithm
- C.
128-bit key algorithm
- D.
1024-bit key algorithm
- 17.Which of the following can be termed as “brute force attack”?
- A.
Trying all combinations to break a code
- B.
Breaking into strong cryptography
- C.
Forcibly capturing all data being transmitted
- D.
None of the above
- 18.Which of the following types of cryptography is possible? Choose two.
- A.
Cryptography with keys
- B.
Cryptography without keys
- C.
Cryptography before encryption
- D.
Cryptography without encryption
- 19.Cryptography without keys is more secure than cryptography with keys. T/F?
- A.
True
- B.
False
- 20.Which of the following is required by the cipher when it is important to maintain a message as a secret?
- A.
Generate one cipher text for that message
- B.
Generate at least 5 cipher text for that message
- C.
Generate several cipher text.
- D.
None of the above.
- 21.Which of the following is the most common attack faced by the DES algorithm?
- A.
DoS
- B.
Brute force attack
- C.
Code attack
- D.
None of the above
- 22.Differential cryptanalysis is nothing but pattern studying. T/F?
- A.
True
- B.
False
- 23.Which of the following is provided by IDEA? Choose two.
- A.
High level security
- B.
Complex implementation
- C.
Ease of implementation
- D.
Average security level
- 24.Which of the following best describes Ron’s Code 2?
- A.
64-bit block cipher
- B.
128-bit block cipher
- C.
64-bit stream cipher
- D.
128-bit stream cipher
- 25.The block size in RC5 can range from 0 to 255. Y/N?
- A.
Yes
- B.
No
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