Week 3 Module 1 Flashcards

PKI

1
Q

In PKI the ingredients of Trust are what?

A

Authentication
Confidentiality
Data Integrity
Non-repudiation

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2
Q

What is Non-repudiation?

A

prevention of an entity to deny previous actions

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3
Q

________ is the protection of information from unauthorized disclosure.

A

Confidentiality

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4
Q

The Credential in PKI is the binding of the ______ with a ______ Key.

A. Private
B. Public
C. Subject Identity
D. Digital Identity

A

C. Subject Identity

B. Public

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5
Q

Confidentiality is provided by the sender encrypting contents using the recipient’s _________. Decryption by the recipient is done using the recipient’s _______.

A

Public Key

Private Key

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6
Q

Digital Signatures provide _____ and ______.

A

integrity

non-repudiation

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7
Q

The status of a certificate can be checked using the ________ or _______.

A. Certificate Revocation List
B. Certificate Status List
C. Online Certificate Status Protocol
D. Online Revocation Status List

A

A. Certificate Revocation List

C. Online Certificate Status Protocol

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8
Q

The _______ manages the certificate lifecycle and is the trusted party, among other things.

A

Certificate Authority (CA)

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9
Q

The CA can delegate the _______ to identity and authenticate subscribers, but it cannot issue certificates.

A

Registration Authority (RA)

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10
Q

A _______ is an electronic site that holds certificates and certificate status information.

A. database
B. repository
C. certificate store
D. none of the above

A

B. repository

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11
Q

___________ is the process of establishing trust in a CA, starting from a CA you already trust.

A. Certificate Trust Validation
B. Certificate Link Validation
C. Certificate Path Validation
D. None of the above

A

C. Certificate Path Validation

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12
Q

A _______ is a trust model where the CA issues certificates to users/systems, but not other CAs. Not very scalable.

A

Single CA

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13
Q

In a ______ PKI model, the CAs have a superior-subordinate relationship.

A

Hierarchical

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14
Q

A _______ PKI model links two PKI Domains.

A

Bridge

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15
Q

True/False: Self-signed certificates are common and very trustworthy.

A

False

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16
Q

Mary has a certificate from CA1. Joe has a certificate from CA 3. CA 1 issued CA2’s certificate. CA2 issues CA2’s certificate.
Does Joe Trust Mary’s Cert?

A

Yes (Hierarchical PKI)

17
Q

The top CA in a trust chain is called what?

A

Root CA