13099728
Pregunta 1
Pregunta
A certificate repository (CR) is a publicly accessible centralized directory of digital certificates
Respuesta
- True
- False
Pregunta 2
Pregunta
A digital certificate is a technology used to associate a user's identity to a private key.
Respuesta
- True
- False
Pregunta 3
Pregunta
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?
Respuesta
-
Certificate Practice Statement (CPS)
-
Access Policy (AP)
-
Lifecycle Policy (LP)
-
Certificate Policy (CP)
Pregunta 4
Pregunta
A framework for all of the entities involved in digital certificates for digital certificate management is known as:
Respuesta
-
private key infrastructure
-
network key infrastructure
-
public key infrastructure
-
shared key infrastructure
Pregunta 5
Pregunta
A Subject Alternative Name (SAN) digital certificate, is also known as a Unified Communications Certificate (UCC).
Respuesta
- True
- False
Pregunta 6
Pregunta
At what stage can a certificate no longer be used for any type of authentication?
Respuesta
-
expiration
-
creation
-
suspension
-
revocation
Pregunta 7
Pregunta
A user electronically signs a Certificate Signing Request (CSR) by affixing their public key and then sending it to an intermediate certificate authority.
Respuesta
- True
- False
Pregunta 8
Pregunta
Digital certificates should last forever.
Respuesta
- True
- False
Pregunta 9
Pregunta
Root digital certificates should never be self-signed.
Respuesta
- True
- False
Pregunta 10
Pregunta
Select the secure alternative to the telnet protocol:
Respuesta
-
HTTPS
-
IPsec
-
TLS
-
SSH
Pregunta 11
Pregunta
Select the term that is used to describe a trusted third-party agency that is responsible for issuing digital certificates:
Respuesta
-
Registration Authority
-
Participation Authority
-
Certification Authority
-
Delegation Authority
Pregunta 12
Pregunta
Some CAs issue only entry-level certificates that provide domain-only validation.
Respuesta
- True
- False
Pregunta 13
Pregunta
Some cryptographic algorithms require that in addition to a key another value can or must be input.
Respuesta
- True
- False
Pregunta 14
Pregunta
SSL v3.0 served as the basis for TLS v1.0.
Respuesta
- True
- False
Pregunta 15
Pregunta
Stream ciphers work on multiple characters at a time.
Respuesta
- True
- False
Pregunta 16
Pregunta
The Authentication Header (AH) protocol is a part of what encryption protocol suite below?
Respuesta
-
IPSec
-
SSL
-
TLS 3.0
-
GPG
Pregunta 17
Pregunta
The process by which keys are managed by a third party, such as a trusted CA, is known as?
Respuesta
-
key escrow
-
key renewal
-
key destruction
-
key management
Pregunta 18
Pregunta
What allows an application to implement an encryption algorithm for execution?
Respuesta
-
counters
-
initialization vectors
-
crypto modules
-
crypto service providers
Pregunta 19
Pregunta
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?
Respuesta
-
Counter
-
Galois/Counter
-
Electronic Code Book
-
Cipher Block Chaining
Pregunta 20
Pregunta
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?
Respuesta
-
Cipher Block Chaining
-
Counter
-
Electronic Code Book
-
Galois/Counter
Pregunta 21
Pregunta
What common method is used to ensure the security and integrity of a root CA?
Respuesta
-
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
Pregunta 22
Pregunta
What cryptographic transport algorithm is considered to be significantly more secure than SSL?
Respuesta
-
HTTPS
-
AES
-
TLS
-
ESSL
Pregunta 23
Pregunta
What is a value that can be used to ensure that plaintext, when hashed, will not consistently result in the same digest?
Respuesta
-
counter
-
nonce
-
initialization vector
-
salt
Pregunta 24
Pregunta
What is used to create session keys?
Respuesta
-
master secret
-
validation
-
crypto modules
-
domain validation
Pregunta 25
Pregunta
What kind of digital certificate is typically used to ensure the authenticity of a web server to a client?
Respuesta
-
public web
-
web server
-
web client
-
private
Pregunta 26
Pregunta
What length SSL and TLS keys are generally considered to be strong?
Respuesta
-
128
-
1024
-
2048
-
4096
Pregunta 27
Pregunta
What process links several certificates together to establish trust between all the certificates involved?
Respuesta
-
certificate joining
-
certificate linking
-
certificate pairing
-
certificate chaining
Pregunta 28
Pregunta
What process will remove all private and public keys along with the user's identification information in the CA?
Respuesta
-
destruction
-
revocation
-
deletion
-
suspension
Pregunta 29
Pregunta
What protocol below supports two encryption modes: transport and tunnel?
Respuesta
-
HTTPS
-
SSL
-
TLS
-
IPSec
Pregunta 30
Pregunta
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?
Respuesta
-
SSL
-
EAP
-
TLS
-
PEAP
Pregunta 31
Pregunta
SSL v3.0 is considered more secure than TLS v1.2
Respuesta
- True
- False
Pregunta 32
Pregunta
What term best represents the resiliency of a cryptographic key to attacks?
Respuesta
-
key bits
-
key resiliency
-
key strength
-
key space
Pregunta 33
Pregunta
What type of trust model has a single CA that acts as a facilitator to interconnect all other CAs?
Respuesta
-
transitive trust
-
distributed trust
-
third-party trust
-
bridge trust
Pregunta 34
Pregunta
What type of trust model is used as the basis for most digital certificates used on the Internet?
Respuesta
-
distributed trust
-
related trust
-
managed trust
-
third-party trust
Pregunta 35
Pregunta
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?
Respuesta
-
third-party
-
distributed
-
web of
-
mutual
Pregunta 36
Pregunta
Which of the following certificates are self-signed?
Respuesta
-
root digital certificates
-
trusted digital certificates
-
web digital certificates
-
user digital certificates
Pregunta 37
Pregunta
Which of the following certificates verifies the identity of the entity that has control over the domain name?
Respuesta
-
validation digital certificate
-
root digital certificates
-
domain validation digital certificate
-
web digital certificates
Pregunta 38
Pregunta
Which of the following is an enhanced type of domain digital certificate?
Respuesta
-
Trusted Validation
-
Extended Validation
-
Primary Validation
-
Authorized Validation
Pregunta 39
Pregunta
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?
Respuesta
-
salt
-
counter
-
nonce
-
initialization vector
Pregunta 40
Pregunta
Which of the following is a valid way to check the status of a certificate? (Choose all that apply.)
Respuesta
-
Online Certificate Status Protocol
-
Certificate Revocation List
-
Certificate Revocation Authority
-
Revocation List Protocol
Pregunta 41
Pregunta
Why is IPsec considered to be a transparent security protocol?
Respuesta
-
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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