單項選擇題Birthday attacks are used against which of the following？（）

A. digital signatures
B. symmetric ciphering
C. hashalgoritms
D. asymmetric ciphering
E. digital certificates


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1.單項選擇題Which of the following statements is correct regarding a hybridcrypto system？（）

A. uses symmetric crypto for keys distribution
B. uses symmetric crypto for proof of origin
C. uses symmetric crypto for fast encrypted/decryption
D. uses asymmetric crypto for message confidentiality
E. uses symmetric crypto to transmit the asymmetric keys that is thenused to encrypt a session

2.多項選擇題When configuring IOS firewall （CBAC） operations on Cisco routers， the "inspection rule" could be applied at which two locations？ （）

A. at the untrusted interfacein the inbound direction
B. atthe untrusted interface in theoutbounddirection
C. at thetrusted interface inthe inbound direction
D. at the trusted interface in the outbound direction
E. at the trusted and untrusted interfaces in the inbound direction
F. at the trusted and untrusted interfaces in the outbounddirection

3.多項選擇題The CS-MARS appliance offers attackmitigatons using which twomethods？  （）

A. Automatically pushing ACLs to layer 3 devices to block the attacker’s traffic
B. Automatically pushing commands to layer 2 switches to shutdown the attacker’s ports
C. Automatically resetting the attacker’sTCP connections
D. RecommendingACLs tobe manuallypushed tolayer 3 devices such as routers/firewalls
E. Operating as an inline appliance， it automaticallyblocks malicious traffic inline
F. Working inconjuction with CSM to block the attacker’s traffic inline

4.單項選擇題Which of the following are not steps in setting up aTLS session？ （）

A. Client sends Hello to Server listing all of its supported cipher suites
B. Server sends Hello to Client listing all of its supported cipher suites
C. Client calculates and sends encryptedpre_master_secret
D. Client and Server calculate keys from pre_master_secret
E. Server sends Change Cipher Spec to indicate a shift to encrypted mode

5.單項選擇題PEAP provides authentication for theEAP exchange using： （）

A. RC4
B. TLS
C. SSH
D. AES
E. 3DES