CTS 1120 Final EXAM WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY
GRADED A+
Betty receives a ciphertext message from her colleague Tim. What type of function does Betty need to
use to read the plaintext message?
A. Encryption
B. Hashing
C. Decryption
D. Validation - (answer)C. Decryption
Alice and Bob would like to communicate with each other using a session key but they do not already
have a shared secret key. Which algorithm can they use to exchange a secret key?
A. Rivest, Shamir, Adelman (RSA)
B. Message digest algorithm (MD5)
C. Blowfish
D. Diffie-Hellman - (answer)D. Diffie-Hellman
Gary is sending a message to Patricia. He wants to ensure that nobody tampers with the message while
it is in transit. What goal of cryptography is Gary attempting to achieve?
A. Confidentiality
B. Integrity
C. Authentication
D. Nonrepudiation - (answer)B. Integrity
When Patricia receives a message from Gary, she wants to be able to demonstrate to Sue that the
message actually came from Gary. What goal of cryptography is Patricia attempting to achieve?
A. Confidentiality
B. Integrity
C. Authentication
D. Nonrepudiation - (answer)D. Nonrepudiation
,CTS 1120 Final EXAM WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY
GRADED A+
Which information security objective allows trusted entities to endorse information?
A. Validation
B. Authorization
C. Certification
D. Witnessing - (answer)C. Certification
Which approach to cryptography provides the strongest theoretical protection?
A. Quantum cryptography
B. Asymmetric cryptography
C. Elliptic curve cryptography
D. Classic cryptography - (answer)A. Quantum cryptography
Which type of cipher works by rearranging the characters in a message?
A. Substitution
B. Steganographic
C. Transposition
D. Asymmetric - (answer)C. Transposition
Which set of characteristics describes the Caesar cipher accurately?
A. Asymmetric, block, substitution
B. Asymmetric, stream, transposition
C. Symmetric, stream, substitution
D. Symmetric, block, transposition - (answer)C. Symmetric, stream, substitution
What is the only unbreakable cipher when it is used properly?
,CTS 1120 Final EXAM WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY
GRADED A+
A. Rivest-Shamir-Adelman (RSA)
B. Vernam
C. Elliptic Curve Diffie-Hellman in Ephemeral mode (ECDHE)
D. Blowfish - (answer)B. Vernam
Which cryptographic attack offers cryptanalysts the most information about how an encryption
algorithm works?
A. Chosen plaintext
B. Ciphertext only
C. Known plaintext
D. Chosen ciphertext - (answer)A. Chosen plaintext
What mathematical problem forms the basis of most modern cryptographic algorithms?
A. Factoring large primes
B. Traveling salesman problem
C. Quantum mechanics
D. Birthday problem - (answer)A. Factoring large primes
What is NOT an effective key distribution method for plaintext encryption keys?
A. Paper
B. Unencrypted email
C. CD
D. Smart card - (answer)B. Unencrypted email
What type of function generates the unique value that corresponds to the contents of a message and is
used to create a digital signature?
, CTS 1120 Final EXAM WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY
GRADED A+
A. Elliptic curve
B. Decryption
C. Encryption
D. Hash - (answer)D. Hash
Alice would like to send a message to Bob using a digital signature. What cryptographic key does Alice
use to create the digital signature?
A. Alice's public key
B. Alice's private key
C. Bob's public key
D. Bob's private key - (answer)B. Alice's private key
Bob received a message from Alice that contains a digital signature. What cryptographic key does Bob
use to verify the digital signature?
A. Alice's public key
B. Alice's private key
C. Bob's public key
D. Bob's private key - (answer)A. Alice's public key
What is NOT a symmetric encryption algorithm?
A. Rivest-Shamir-Adelman (RSA)
B. Data Encryption Standard (DES)
C. International Data Encryption Algorithm (IDEA)
D. Carlisle Adams Stafford Tavares (CAST) - (answer)A. Rivest-Shamir-Adelman (RSA)
What is NOT a valid encryption key length for use with the Blowfish algorithm?
CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY
GRADED A+
Betty receives a ciphertext message from her colleague Tim. What type of function does Betty need to
use to read the plaintext message?
A. Encryption
B. Hashing
C. Decryption
D. Validation - (answer)C. Decryption
Alice and Bob would like to communicate with each other using a session key but they do not already
have a shared secret key. Which algorithm can they use to exchange a secret key?
A. Rivest, Shamir, Adelman (RSA)
B. Message digest algorithm (MD5)
C. Blowfish
D. Diffie-Hellman - (answer)D. Diffie-Hellman
Gary is sending a message to Patricia. He wants to ensure that nobody tampers with the message while
it is in transit. What goal of cryptography is Gary attempting to achieve?
A. Confidentiality
B. Integrity
C. Authentication
D. Nonrepudiation - (answer)B. Integrity
When Patricia receives a message from Gary, she wants to be able to demonstrate to Sue that the
message actually came from Gary. What goal of cryptography is Patricia attempting to achieve?
A. Confidentiality
B. Integrity
C. Authentication
D. Nonrepudiation - (answer)D. Nonrepudiation
,CTS 1120 Final EXAM WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY
GRADED A+
Which information security objective allows trusted entities to endorse information?
A. Validation
B. Authorization
C. Certification
D. Witnessing - (answer)C. Certification
Which approach to cryptography provides the strongest theoretical protection?
A. Quantum cryptography
B. Asymmetric cryptography
C. Elliptic curve cryptography
D. Classic cryptography - (answer)A. Quantum cryptography
Which type of cipher works by rearranging the characters in a message?
A. Substitution
B. Steganographic
C. Transposition
D. Asymmetric - (answer)C. Transposition
Which set of characteristics describes the Caesar cipher accurately?
A. Asymmetric, block, substitution
B. Asymmetric, stream, transposition
C. Symmetric, stream, substitution
D. Symmetric, block, transposition - (answer)C. Symmetric, stream, substitution
What is the only unbreakable cipher when it is used properly?
,CTS 1120 Final EXAM WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY
GRADED A+
A. Rivest-Shamir-Adelman (RSA)
B. Vernam
C. Elliptic Curve Diffie-Hellman in Ephemeral mode (ECDHE)
D. Blowfish - (answer)B. Vernam
Which cryptographic attack offers cryptanalysts the most information about how an encryption
algorithm works?
A. Chosen plaintext
B. Ciphertext only
C. Known plaintext
D. Chosen ciphertext - (answer)A. Chosen plaintext
What mathematical problem forms the basis of most modern cryptographic algorithms?
A. Factoring large primes
B. Traveling salesman problem
C. Quantum mechanics
D. Birthday problem - (answer)A. Factoring large primes
What is NOT an effective key distribution method for plaintext encryption keys?
A. Paper
B. Unencrypted email
C. CD
D. Smart card - (answer)B. Unencrypted email
What type of function generates the unique value that corresponds to the contents of a message and is
used to create a digital signature?
, CTS 1120 Final EXAM WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY
GRADED A+
A. Elliptic curve
B. Decryption
C. Encryption
D. Hash - (answer)D. Hash
Alice would like to send a message to Bob using a digital signature. What cryptographic key does Alice
use to create the digital signature?
A. Alice's public key
B. Alice's private key
C. Bob's public key
D. Bob's private key - (answer)B. Alice's private key
Bob received a message from Alice that contains a digital signature. What cryptographic key does Bob
use to verify the digital signature?
A. Alice's public key
B. Alice's private key
C. Bob's public key
D. Bob's private key - (answer)A. Alice's public key
What is NOT a symmetric encryption algorithm?
A. Rivest-Shamir-Adelman (RSA)
B. Data Encryption Standard (DES)
C. International Data Encryption Algorithm (IDEA)
D. Carlisle Adams Stafford Tavares (CAST) - (answer)A. Rivest-Shamir-Adelman (RSA)
What is NOT a valid encryption key length for use with the Blowfish algorithm?
