Test
Ch 3 - Basic Cryptography
Preguntas del test (40)
1A collision attack is an attempt to find two input strings of a hash function that produce the same hash result.
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2After the DES cipher was broken and no longer considered secure, what encryption algorithm was made as its successor?
- AAES
- BRSA
- CTwofish
- D3DES
3Asymmetric cryptographic algorithms are also known as private key cryptography.
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4Ciphertext is the scrambled and unreadable output of encryption.
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5Data that is in an unencrypted form is referred to as which of the following?
- Aplain text
- Bcrypttext
- Ccleartext
- Dsimpletext
6Encryption is the practice of transforming information so that it is secure and cannot be accessed by unauthorized parties.
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7GNU Privacy Guard a proprietary software that runs on different operating systems.
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8If Bob receives an encrypted reply message from Alice, whose private key is used to decrypt the received message?
- AAlice's private key
- BBob's private key
- CBob's private key and Alice's public key
- DBob and Alice's keys
9If using the MD5 hashing algorithm, what is the length to which each message is padded?
- A64 bits
- B128 bits
- C32 bits
- D512 bits
10In cryptography, which of the five basic protections ensures that the information is correct and no unauthorized person or malicious software has altered that data?
- Aconfidentiality
- Bencryption
- Cavailability
- Dintegrity
11In information technology, non-repudiation is the process of proving that a user performed an action.
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12In which type of encryption is the same key used to encrypt and decrypt data?
- Apublic
- Basymmetric
- Csymmetric
- Dprivate
13Obfuscation is making something well known or clear.
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14One of the first popular symmetric cryptography algorithms was RSA.
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15The SHA-1 hashing algorithm creates a digest that is how many bits in length?.
- A192 bits
- B160 bits
- C128 bits
- D96 bits
16The simplest type of stream cipher, one in which one letter or character is exchanged for another, is known as what?
- Aloop
- Block
- Csubstitution
- Dshift
17The XOR cipher is based on the binary operation eXclusive OR that compares two bits.
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18What alternative term can be used to describe asymmetric cryptographic algorithms?
- Apublic key cryptography
- Buser key cryptography
- Cprivate key cryptography
- Dcipher-text cryptography
19What cryptographic method, first proposed in the mid-1980s, makes use of sloping curves instead of large prime numbers?
- ARSA
- BECC
- CFCC
- DIKE
20What is a block cipher algorithm that operates on 64-bit blocks and can have a key length from 32 to 448 bits?
- ABlowfish
- BWhirlpool
- CRijndal
- DTwofish
21What is the U.S. federal government standard for digital signatures?
- AData Encryption Standard
- BAdvanced Encryption Standard
- CDigital Signature Algorithm
- DElliptic Curve Cryptography
22What technology uses a chip on the motherboard of the computer to provide cryptographic services?
- ASEDs
- BTPM
- CFDE
- DHSM
23What term best describes when cryptography is applied to entire disks instead of individual files or groups of files?
- Afull disk encryption
- Bsystem encryption
- COS encryption
- Ddisk encryption
24What term describes data actions being performed by endpoint devices, such as printing a report from a desktop computer?
- Adata-in-transit
- Bdata-at-rest
- Cdata-in-use
- Ddata-in-play
25What type of cipher takes one character and replaces it with one character, working one character at a time?
- Ablock cipher
- Bunit cipher
- Csingle cipher
- Dstream cipher
26What type of cryptographic algorithm creates a unique digital fingerprint of a set of data?
- Ahash
- Bblock
- Cdigest
- Dkey
27What type of cryptography uses two keys instead of just one, generating both a private and a public key?
- Ashared
- Basymmetric
- Csymmetric
- Dopen
28What type of message authentication code uses hashing to authenticate the sender by using both a hash function and a secret cryptographic key?
- ARIPEMD
- BHMAC
- CSHA-384
- DMD5
29What widely used commercial asymmetric cryptography software can be used for encrypting files and email messages?
- APGP
- BGPG
- CEFS
- DGNUPG
30When Bob needs to send Alice a message with a digital signature, whose private key is used to encrypt the hash?
- ABob's private key
- BBob and Alice's keys
- CAlice's private key
- DBob's private key and Alice's public key
31Which hash algorithm's primary design feature is two different and independent parallel chains of computation, the results of which are then combined at the end of the process?
- AHMAC
- BRIPEMD
- CSHA-384
- DMD5
32Which key exchange requires Alice and Bob to each agree upon a large prime number and related integer?
- APrime-Curve
- BQuantum Prime
- CElliptic Curve Diffie-Hellman
- DDiffie-Hellman
33Which of the following are considered to be common asymmetric cryptographic algorithms? (Choose all that apply.)
- ADigital Signature Algorithm
- BElliptic Curve Cryptography
- CData Encryption Standard
- DAdvanced Encryption Standard
34Which of the following asymmetric cryptography algorithms is most commonly used?
- AAES
- BBlowfish
- CRSA
- DTwofish
35Which of the following is a public key system that generates random public keys that are different for each session?
- Apublic secrecy
- Bephemeral-secrecy
- Crandom-key exchange
- Dperfect forward secrecy
36Which of the following is more secure than software encryption?
- Ahardware encryption
- Bfull disk encryption
- Cprivate encryption
- Dapplication encryption
37Which of the following is not one of the functions of a digital signature?
- Averification of the sender
- Bprotect the public key
- Cprove the integrity of the message
- Dprevention of the sender from disowning the message
38Which standard was approved by NIST in late 2000 as a replacement for DES?
- AAES
- BTwofish
- CRSA
- D3DES
39Which type of cryptographic algorithm takes an input string of any length, and returns a string of any requested variable length?
- Asponge
- Bblock
- Csubstitution
- Dloop
40Wireless data networks are particularly susceptible to known ciphertext attacks.
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Información
- Descripción
- Ch 3 quiz
- Autor
- C Danvers
- Idioma
- English
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