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Exam 4: Advanced Cryptography and PKI

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Question 1

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What allows an application to implement an encryption algorithm for execution?

A) counters
B) crypto service providers
C) initialization vectors
D) crypto modules

E) B) and C)
F) All of the above

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Question 2

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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?

A) Certificate practice statement (CPS)
B) Certificate policy (CP)
C) Lifecycle policy (LP)
D) Access policy (AP)

E) None of the above
F) All of the above

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Question 3

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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?

What cryptographic transport algorithm is considered to be significantly more secure than SSL?

Which of the following certificates verifies the identity of the entity that has control over the domain name?

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?

Select the term that is used to describe a trusted third-party agency that is responsible for issuing digital certificates:

Explain how Cipher Block Chaining (CBC)operates.

A certificate repository (CR)is a publicly accessible centralized directory of digital certificates.

What protocol uses SSL or TLS to secure communications between a browser and a web server?

What is a value that can be used to ensure that plaintext,when hashed,will not consistently result in the same digest?

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?

What process links several certificates together to establish trust between all the certificates involved?

Root digital certificates are should never be self-signed.

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?

What type of trust model has a single CA that acts as a facilitator to interconnect all other CAs?

What is a cipher suite?

What is a cryptographic key?

Some CAs issue only entry-level certificates that provide domain-only validation.

The Authentication Header (AH) protocol is a part of what encryption protocol suite below?