Pre-Assessment Intro to Cryptography - D334

Pre-Assessment Intro to Cryptography - D334
1. Abusinesswantstousekeysissuedbyatrustedthirdpartytodemonstrate to pot
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ential customers that it is a legitimate organization.Which key is used to sign the c
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ertificate issued to the business? rh rh rh rh




A. Private key of the root CA rh rh rh rh rh




B. Public key of the root CA rh rh rh rh rh




C. Private key of the company rh rh rh rh




D. Public key of the company:Privatekey of the root CA
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2. Abusinesswantstousekeysissuedbyatrustedthirdpartytodemonstrate it is a le
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gitimate organization to potential customers.Which key should the business sen
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d to potential customers to prove its identity?
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A. Private key of the root CA rh rh rh rh rh




B. Public key of the root CA rh rh rh rh rh




C. Private key of the company rh rh rh rh




D. Publickey of the company:Public keyof the company
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3. What should an administrator use to import and export all items written usin
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g X.509 that are part of a chain of trust?
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A. CER
B. Public Key Cryptography Standard (PKCS) #7 rh rh rh rh rh




C. Public Key Cryptography Standard (PKCS) #12 rh rh rh rh rh




D. RTF:PublicKeyCryptographyStandard(PKCS)#12
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4. Which field displays the hash,or digest,of the certificate in an X.509 certifi
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cate?
A. Subject
B. Issuer
C. Version
D. Thumbprint:Thumbprint rh




5. Whichcertificatemanagement processinvolves key recovery?
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A. Initialization
B. Issued
C. Cancellation
D. Hold:Issued rh




6. Which task does a root CA perform before publishing its own certificate?
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A. Encrypting it with its private key rh rh rh rh rh




B. Encrypting it with its public key rh rh rh rh rh




C. Signing it with its private key rh rh rh rh rh




D. Signing it with its public key:Signing it with its private key
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7. Which algorithm is used to generate the thumbprint of a certificate?
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A. RSA
B. 3DES
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, Pre-Assessment Intro to Cryptography - D334
C. AES
D. SHA-1:SHA-1 rh




8. Large volumes of plaintext need to be encrypted,and the encryption keys need
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tobesecurelydistributed.Whichapproachshouldbeusedforencryp-
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tion and distribution?
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A. Encryptbyusingsymmetrickeysanddistributebyusingasymmetrickeys rh rh rh rh rh rh rh rh rh rh




B. Encryptbyusingasymmetrickeysanddistributebyusingsymmetrickeys rh rh rh rh rh rh rh rh rh rh




C. Encrypt by using symmetric keys and distribute by using symmetric keys rh rh rh rh rh rh rh rh rh rh




D. Encrypt by using asymmetric keys and distribute by using asymmetric keys rh rh rh rh rh rh rh rh rh rh




:Encryptbyusingsymmetrickeysanddistributebyusingasymmetrickeys
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9. What is the role of a key in asymmetric encryption and decryption?
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A.A public key is used for both encryption and decryption.
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B.A private key is used for both encryption and decryption.
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C.Apublickeyisusedforencryption,andaprivatekeyisusedfordecryption.
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D.A private key is used for encryption,and a public key is used for decryp-
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tion.:A public key isused for encryption, and a private key isused for decryption.
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10. Asecurity analystis validating the integrity andauthenticity ofa data trans
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action.Which PKI component is being used? rh rh rh rh rh rh




A. Digital certificate rh




B. Digital signature rh




C. Asymmetric encryption rh




D. Symmetric encryption:Digital signature rh rh rh




11. Which PKI component generates digital certificates? rh rh rh rh rh




A. Certificate signing request (CSR) rh rh rh




B. Certificate policy (CP) rh rh




C. Certificate revocation list (CRL) rh rh rh




D. Certificate authority (CA):Certificate authority (CA) rh rh rh rh rh




12. Whatis the maximum length (in bits) of encryption keys used by theWEP proto
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col?
A. 40
B. 56
C. 128
D. 256:40 rh




13. WhatisadifferencebetweenWPA-EnterpriseandWPA-Personal? rh rh rh rh rh rh rh




A. SupportforTemporalKeyIntegrityProtocol rh rh rh rh rh




B. Support for an authentication server rh rh rh rh




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