網(wǎng)絡(luò)安全復(fù)習(xí)題庫(參考版)
2025-06-13 02:13本頁面
【正文】 s origin and integrity?o A digital envelope o A cryptographic hash o A Message Authentication Code X A digital signature3 What is NOT true with pre shared key authentication within IKE / IPsec protocol?o pre shared key authentication is normally based on simple passwords X needs a PKI to work o Only one preshared key for all VPN connections is needed o Costly key management on large user groups4 Which of the following is a symmetric encryption algorithm?o RSA o Elliptic Curve o RC5 o El Gamal5. Which of the following is NOT a mode of the Data Encryption Standard (DES)?o Electronic Code Book (ECB) o Cipher Block Chaining (CBC) X Substitution o Output Feedback (OFB)6. 16. Question: 1032 | Difficulty: 1/5 | Relevancy: 3/3 Which of the following standards concerns digital certificates?o o X o 7 Which of the following is less likely to be used in creating a Virtual Private Network?o L2TP o PPTP o IPSec o L2F8. In a Public Key Infrastructure (PKI) context, which of the following is a primary concern with LDAP servers?o Availability o Accountability o Confidentiality o Flexibility9. A public key algorithm that does both encryption and digital signature is which of the following?o RSA o DES o IDEA o DiffieHellman10 The primary purpose for using oneway hashing of user passwords within a password file is which of the following?o It prevents an unauthorized person from trying multiple passwords in one logon attempt. o It prevents an unauthorized person from reading or modifying the password. o It minimizes the amount of storage required for user passwords. o It minimizes the amount of processing time used for encrypting passwords.11 A oneway hash provides which of the following?o Confidentiality o Availability o Integrity o Authentication12 The DiffieHellman algorithm is primarily used to provide which of the following?o Confidentiality o Key exchange o Integrity o Nonrepudiation13What is called the standard format that was established to set up and manage Security Associations (SA) on the Internet in IPSec?o Internet Key Exchange (IKE) o Secure Key Exchange Mechanism o Oakley o Internet Security Association and Key Management Protocol14Why does a digital signature CONTAIN a message digest?o To detect any alteration of the message o To indicate the encryption algorithm o To confirm the iden
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