gs gs124 Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution - Public Keys and X.509 Certificates - Qui
gs gs124 Introduction Cyber Security Quiz
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Question 3: Which of the following is not an element/field of the X.509 certificates?
Issuer Name
Serial Modifier
Issuer unique Identifier
Signature
Question 4: Suppose that A has obtained a certificate from certification authority X1 and B has obtained certificate authority from CA X2. A can use a chain of certificates to obtain B’s public key. In notation of X.509, this chain is represented in the correct order as –
X2 X1 X1 B
X1 X1 X2 A
X1 X2 X2 B
X1 X2 X2 A
Question 6: It is desirable to revoke a certificate before it expires because
the user is no longer certified by this CA
the CA’s certificate is assumed to be compromised
the user’s private key is assumed to be compromised
all of the mentioned
Question 7: CRL stands for
Cipher Reusable List
Certificate Revocation Language
Certificate Revocation List
Certificate Resolution Language
Question 8: Which of the following is not a part of an Extension?
Extension Identifier
Extension value
Criticality Indicator
All of the mentioned constitute the Extension
Question 10: “Conveys any desired X.500 directory attribute values for the subject of this certificate.”
Which Extension among the following does this refer to?
Which Extension among the following does this refer to?
Subject alternative name
Issuer Alternative name
Subject directory attributes
None of the mentioned
Question 13: Which of the following is not an element/field of the X.509 certificates?
Issuer Name
Serial Modifier
Issuer unique Identifier
Signature
Question 14: Suppose that A has obtained a certificate from certification authority X1 and B has obtained certificate authority from CA X2. A can use a chain of certificates to obtain B’s public key. In notation of X.509, this chain is represented in the correct order as –
X2 X1 X1 B
X1 X1 X2 A
X1 X2 X2 B
X1 X2 X2 A
Question 16: It is desirable to revoke a certificate before it expires because
the user is no longer certified by this CA
the CA’s certificate is assumed to be compromised
the user’s private key is assumed to be compromised
all of the mentioned
Question 17: CRL stands for
Cipher Reusable List
Certificate Revocation Language
Certificate Revocation List
Certificate Resolution Language
Question 18: Which of the following is not a part of an Extension?
Extension Identifier
Extension value
Criticality Indicator
All of the mentioned constitute the Extension
Question 20: “Conveys any desired X.500 directory attribute values for the subject of this certificate.”
Which Extension among the following does this refer to?
Which Extension among the following does this refer to?
Subject alternative name
Issuer Alternative name
Subject directory attributes
None of the mentioned
Question 23: X.509 certificate recommends which cryptographic algorithm?
RSA
DES
AES
Rabin
Question 26: Certificate extensions fall into 3 categories. Which one of the following is not a Certificate extensions category?
Subject and Issuer attributes
Key and Policy information
Certification path constraints
All of the above are Certificate extensions categories
Question 27: What does the above figure represent?
Hierarchical in X.509
IPsec connectivity
TCP nodes and links
None of the mentioned
Question 29: CMP stands for
cipher message protocol
cipher management protocol
certificate message protocol
none of the mentioned
Question 30: CMS stands for
cipher message syntax
certificate message session
cryptographic message syntax
none of the mentioned
