Set3 CompTIA Security+ Sample Questions: Cryptography
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This is Set 3 of 4 of practice questions for CompTIA Security+ exam. This set covers the exam objective Cryptography. You can take these Security+ sample questions for practice or take it as a topic wise practice exam. Read the questions carefully and answer. So, let's try out the quiz. All the best! Feedback and comments are welcome.
- 1.
- A.
SHA-1
- B.
SHA-4.1
- C.
SHA-4
- D.
None of the above
- 2.Choose the odd one out.
- A.
RC5
- B.
Blowfish
- C.
MAC
- D.
ECC
- 3.
- A.
Public key
- B.
Private key
- C.
Session key
- D.
Session ID
- 4.ECC is the encryption system used in cellular devices. T/F?
- A.
True
- B.
False
- 5.Cryptography is an essential in encapsulation protocols. T/F?
- A.
True
- B.
False
- 6.
- A.
The number of keys used by the encryption protocol
- B.
The number of keys used by the algorithm
- C.
Number of bits used for encryption by the algorithm
- D.
None of the above
- 7.Cryptanalysis is nothing but pattern finding T/F?
- A.
True
- B.
False
- 8.
- A.
True
- B.
False
- 9.
- A.
It uses an offset value of 3 for sliding alphabets
- B.
There is a difference of 3 between the alphabets when the sliding action occurs
- C.
It uses 3 keys for encryption
- D.
None of the above
- 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 Julius Caesar. T/F?
- A.
True
- B.
False
- 12.
- A.
PK cryptography is a very complex and nearly impossible setup
- B.
You need just one single key for encrypting as well as decrypting in PK cryptography
- C.
Public key can only encrypt and private key can only decrypt
- D.
None of the above
- 13.The higher the number of bits, more secure is the key. T/F?
- A.
True
- B.
False
- 14.A digital signature is used for which of the following?
- A.
Encrypting
- B.
Identifying
- C.
Encapsulating
- D.
None of the above
- 15.
- A.
Hash
- B.
Digital signature
- C.
Token
- D.
None of the above
- 16.Even today only upto 20% of critical information being transmitted is really secure. T/F?
- A.
True
- B.
False
- 17.PKI uses which of the following to ascertain identity?
- A.
Certificate
- B.
Digital signature
- C.
Hand print
- D.
None of the above
- 18.PKI requires skilled and continuous maintenance on the network. T/F?
- A.
True
- B.
False
- 19.Traditional PKI uses self assembly process to maintain security. T/F?
- A.
True
- B.
False
- 20.Which of the following is an improvement over PKI?
- A.
Certificates
- B.
SMSA
- C.
Token
- D.
None of the above
- 21.Which of the following statements is true?
- A.
A private key may be derived from a public key
- B.
Given a public key it is very difficult to derive the private key
- C.
A session ID is used to create a public key
- D.
None of the above
- 22.Which of the following is an improvement over the scheme used in digital signatures?
- A.
Token
- B.
One-way hash functions
- C.
Cryptanalysis
- D.
None of the above
- 23.Which of the following is used to sign the certificate created by the CA?
- A.
CA’s digital signature
- B.
CA’s private key
- C.
CA’s certificate
- D.
None of the above
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