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Ch 4 - Advanced Cryptography

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Ch 4 quiz
C Danvers
Quiz by C Danvers, updated more than 1 year ago
C Danvers
Created by C Danvers over 6 years ago
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Resource summary

Question 1

Question
A certificate repository (CR) is a publicly accessible centralized directory of digital certificates
Answer
  • True
  • False

Question 2

Question
A digital certificate is a technology used to associate a user's identity to a private key.
Answer
  • True
  • False

Question 3

Question
A document that describes in detail how a CA uses and manages certificates, as well as how end users register for a digital certificate, is known as?
Answer
  • Certificate Practice Statement (CPS)
  • Access Policy (AP)
  • Lifecycle Policy (LP)
  • Certificate Policy (CP)

Question 4

Question
A framework for all of the entities involved in digital certificates for digital certificate management is known as:
Answer
  • private key infrastructure
  • network key infrastructure
  • public key infrastructure
  • shared key infrastructure

Question 5

Question
A Subject Alternative Name (SAN) digital certificate, is also known as a Unified Communications Certificate (UCC).
Answer
  • True
  • False

Question 6

Question
At what stage can a certificate no longer be used for any type of authentication?
Answer
  • expiration
  • creation
  • suspension
  • revocation

Question 7

Question
A user electronically signs a Certificate Signing Request (CSR) by affixing their public key and then sending it to an intermediate certificate authority.
Answer
  • True
  • False

Question 8

Question
Digital certificates should last forever.
Answer
  • True
  • False

Question 9

Question
Root digital certificates should never be self-signed.
Answer
  • True
  • False

Question 10

Question
Select the secure alternative to the telnet protocol:
Answer
  • HTTPS
  • IPsec
  • TLS
  • SSH

Question 11

Question
Select the term that is used to describe a trusted third-party agency that is responsible for issuing digital certificates:
Answer
  • Registration Authority
  • Participation Authority
  • Certification Authority
  • Delegation Authority

Question 12

Question
Some CAs issue only entry-level certificates that provide domain-only validation.
Answer
  • True
  • False

Question 13

Question
Some cryptographic algorithms require that in addition to a key another value can or must be input.
Answer
  • True
  • False

Question 14

Question
SSL v3.0 served as the basis for TLS v1.0.
Answer
  • True
  • False

Question 15

Question
Stream ciphers work on multiple characters at a time.
Answer
  • True
  • False

Question 16

Question
The Authentication Header (AH) protocol is a part of what encryption protocol suite below?
Answer
  • IPSec
  • SSL
  • TLS 3.0
  • GPG

Question 17

Question
The process by which keys are managed by a third party, such as a trusted CA, is known as?
Answer
  • key escrow
  • key renewal
  • key destruction
  • key management

Question 18

Question
What allows an application to implement an encryption algorithm for execution?
Answer
  • counters
  • initialization vectors
  • crypto modules
  • crypto service providers

Question 19

Question
What block cipher mode of operation encrypts plaintext and computes a message authentication code to ensure that the message was created by the sender and that it was not tampered with during transmission?
Answer
  • Counter
  • Galois/Counter
  • Electronic Code Book
  • Cipher Block Chaining

Question 20

Question
What block cipher mode of operation uses the most basic approach where the plaintext is divided into blocks, and each block is then encrypted separately?
Answer
  • Cipher Block Chaining
  • Counter
  • Electronic Code Book
  • Galois/Counter

Question 21

Question
What common method is used to ensure the security and integrity of a root CA?
Answer
  • Keep it in an offline state from the network
  • Keep it in an online state and encrypt it
  • Password protect the root CA
  • Only use the root CA infrequently

Question 22

Question
What cryptographic transport algorithm is considered to be significantly more secure than SSL?
Answer
  • HTTPS
  • AES
  • TLS
  • ESSL

Question 23

Question
What is a value that can be used to ensure that plaintext, when hashed, will not consistently result in the same digest?
Answer
  • counter
  • nonce
  • initialization vector
  • salt

Question 24

Question
What is used to create session keys?
Answer
  • master secret
  • validation
  • crypto modules
  • domain validation

Question 25

Question
What kind of digital certificate is typically used to ensure the authenticity of a web server to a client?
Answer
  • public web
  • web server
  • web client
  • private

Question 26

Question
What length SSL and TLS keys are generally considered to be strong?
Answer
  • 128
  • 1024
  • 2048
  • 4096

Question 27

Question
What process links several certificates together to establish trust between all the certificates involved?
Answer
  • certificate joining
  • certificate linking
  • certificate pairing
  • certificate chaining

Question 28

Question
What process will remove all private and public keys along with the user's identification information in the CA?
Answer
  • destruction
  • revocation
  • deletion
  • suspension

Question 29

Question
What protocol below supports two encryption modes: transport and tunnel?
Answer
  • HTTPS
  • SSL
  • TLS
  • IPSec

Question 30

Question
What protocol, developed by Netscape in 1994, is designed to create an encrypted data path between a client and server that could be used on any platform or operating system?
Answer
  • SSL
  • EAP
  • TLS
  • PEAP

Question 31

Question
SSL v3.0 is considered more secure than TLS v1.2
Answer
  • True
  • False

Question 32

Question
What term best represents the resiliency of a cryptographic key to attacks?
Answer
  • key bits
  • key resiliency
  • key strength
  • key space

Question 33

Question
What type of trust model has a single CA that acts as a facilitator to interconnect all other CAs?
Answer
  • transitive trust
  • distributed trust
  • third-party trust
  • bridge trust

Question 34

Question
What type of trust model is used as the basis for most digital certificates used on the Internet?
Answer
  • distributed trust
  • related trust
  • managed trust
  • third-party trust

Question 35

Question
When two individuals trust each other because of the trust that exists between the individuals and a separate entity, what type of trust has been established?
Answer
  • third-party
  • distributed
  • web of
  • mutual

Question 36

Question
Which of the following certificates are self-signed?
Answer
  • root digital certificates
  • trusted digital certificates
  • web digital certificates
  • user digital certificates

Question 37

Question
Which of the following certificates verifies the identity of the entity that has control over the domain name?
Answer
  • validation digital certificate
  • root digital certificates
  • domain validation digital certificate
  • web digital certificates

Question 38

Question
Which of the following is an enhanced type of domain digital certificate?
Answer
  • Trusted Validation
  • Extended Validation
  • Primary Validation
  • Authorized Validation

Question 39

Question
Which of the following is an input value that must be unique within some specified scope, such as for a given period or an entire session?
Answer
  • salt
  • counter
  • nonce
  • initialization vector

Question 40

Question
Which of the following is a valid way to check the status of a certificate? (Choose all that apply.)
Answer
  • Online Certificate Status Protocol
  • Certificate Revocation List
  • Certificate Revocation Authority
  • Revocation List Protocol

Question 41

Question
Why is IPsec considered to be a transparent security protocol?
Answer
  • IPsec's design and packet header contents are open sourced technologies
  • IPsec uses the Transparent Encryption (TE) algorithm
  • IPsec is designed to not require modifications of programs, or additional training, or additional client setup
  • IPsec packets can be viewed by anyone
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