Comptia Security +: Cryptography MCQs
Comptia Security +: Cryptography MCQs
These Comptia Security +: Cryptography multiple-choice questions and their answers will help you strengthen your grip on the subject of Comptia Security +: Cryptography. You can prepare for an upcoming exam or job interview with these 30 Comptia Security +: Cryptography MCQs.
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1: Encrypting a message's hash value with a private key - DOES NOT ensure confidentiality
A. Elliptic curve
B. Digital signature
C. Hash Message Authentication Code
D. DSS
2: Mechanism for message authentication that uses one of two algorithms (SHA-1 or MDF5) in combination with a shared secret key - also known as keyed hashing
A. Encryption
B. L2TP
C. HMAC
D. RSA
3: Protects against removing or installing a bogus hard drive using sealing (measuring system variables - BIOS - boot sector - firmware)
A. DES
B. TPM
C. SSL
D. IPSec
4: Based on use of one private/secret key - does NOT provide authentication or nonrepudiation - uses MAC
A. Symmetric key algorithms
B. Secure hash algorithm
C. RSA
D. Symmetric key
5: Encrypted text - also called cryptogram
A. Ciphertext
B. Digital signature
C. Integrity
D. Cipher
6: Sequence of bits used in encryption and decryption - also known as cryptovariable
A. Symmetric ciphers
B. SHA-2
C. Key
D. Digital signature
7: A cryptographic checksum used to provide integrity in symmetric key cryptography
A. S-HTTP
B. Stream cipher
C. Message Authentication Code
D. Digital signature
8: Based on two keys - public and private - one-way function: a key cannot decrypt what it encrypts - provides confidentiality - authentication - integrity - and nonrepudiation - Discovered by Diffie and Hellman - also known as public key
A. Asymmetric key
B. Ciphertext
C. WPA2
D. Non repudiation
9: Method of encryption and decryption
A. PPTP
B. Cipher
C. Digital signature
D. X.509
10: Tunneling protocol that merges PPTP with L2F - using port 1701 - is used over UDP - can be combined with IPSec for 5 layered encapsulation
A. L2TP
B. One time pad
C. HMAC
D. SSH
11: Symmetric cryptography - asymmetric cryptography - and hashes provide __________
A. IPSec
B. Steganography
C. Plaintext
D. Confidentiality
12: Symmetric cryptography with MAC - asymmetric cryptography - and hashes provide __________
A. Whole disk encryption
B. Secure hash algorithm
C. Digital signature
D. Integrity
13: PPTP - L2TP - IPSec - and SSH
A. Digital signature
B. MD5
C. TKIP
D. Tunneling protocols
14: Process of transforming plaintext into unreadable format
A. SSL
B. TPM
C. Encryption
D. Integrity
15: . Cryptographic algorithm that operates on plaintext - one bit at a time - and enciphers with a random generated "key stream" using substitution
A. Encryption
B. Stream cipher
C. PPTP
D. Asymmetric key
16: Two different pieces of data have the same hash value
A. Tunneling protocols
B. Collision
C. L2TP
D. IPSec
17: A protocol suite for securing network connections using IKE - AH - and ESP
A. PPTP
B. Triple DES
C. IPSec
D. TPM
18: For encrypting web communications - uses Cryptographic Messaging Syntax (CMS) to protect individual message and response
A. SSH
B. Digital signature
C. TKIP
D. S-HTTP
19: A cryptographic protocol that provides security for communications over networks such as the Internet - more secure that SSL
A. TLS
B. Secure hash algorithm
C. Steganography
D. Hash Message Authentication Code
20: A secure cryptoprocessor embedded in the motherboard used to authenticate a hardware device - TPM stands for
A. Symmetric key algorithms
B. Trusted platform module
C. Message Authentication Code
D. Unclassified data
21: Digital signature standard that uses 2 algorithms: RSA and DSA (based on El Gamal) - both use the Secure Hash Standard (SHA-1)
A. DSS
B. Hybrid
C. TPM
D. IPSec
22: Provides integrity - authentication - and non-repudiation by encrypting a message digest with a private key
A. Digital signature
B. DSS
C. X.509
D. Asymmetric key
23: Free email security program that uses several algorithms - symmetric (IDEA) - asymmetric (RSA) and hashes (SHA1) and the web of trust
A. Encryption
B. Elliptic curve
C. Symmetric key algorithms
D. PG
24: HMAC stands for...
A. Hash Message Authentication Code
B. One time pad
C. Trusted platform module
D. Non repudiation
25: Tunneling protocol originally used on UNIX - uses port 22 - typically used for remote administration - replaces telnet and FTP
A. SSH
B. DSS
C. Non repudiation
D. Decryption
26: Asymmetric cryptography - hashes - and digital signatures provide __________
A. Non repudiation
B. Key
C. Secure hash algorithms
D. SHA-2
27: Cipher block chaining (CBC) - cipher feedback (CFB) - electronic code book (ECB) and output feedback (OFB)
A. Four modes of DES
B. IPSec
C. Ciphertext
D. S-HTTP
28: Technique of encapsulating one packet of data within another type to create a secure link of transportation
A. Wired equivalency privacy
B. Ciphertext
C. L2TP
D. Tunneling
29: Encryption standard broken in 1998 - has a relatively short key length
A. TLS
B. DES
C. Encryption
D. S/MIME
30: Pads messages to a length of 512 bits - then compresses to generate a 128 bit hash value
A. DSS
B. MD5
C. Secure hash algorithm
D. Symmetric key algorithms
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Comptia Security +: Cryptography MCQs
