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