單項(xiàng)選擇題For a router to obtain a certificate from a CA， what is the first stepof the certificate enrollment process？（）

A. the router generates a certificate request and forwards it tothe CA
B. the router generates an RSA key pair
C. the router sends its public key to the CA
D. the CA sends its public key to the router
E. the CA verifies the identity of the router
F. the CA generates a certificate request and forwards it to the router


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1.多項(xiàng)選擇題Which two statements are correct about the aaa authentication login default grouptacacs+ localglobal configuration command？ （）

A. this login authenticationmethod list is automaticallyapplied to all lines except those that have a named method list explicitly defined
B. If the user fails the TACACS+ authentication then the local database on the router will be used to authenticatethe user
C. if the tacacs+ server fails to respond then the local database on the router will be used to authenticate the user 
D. "login" is the name of the method list being configured
E. if the tacacs+ server is unavailable， authentication will succeed automaticallyby default

2.單項(xiàng)選擇題Which Cisco security software product mitigates Day Zero attacks on desktops and servers - stopping known and unknown attacks without requiring reconfigurations or updates on the endpoints？（）

A. Cisco Secure Desktop （CSD）
B. NAC Appliance Agent （NAA）
C. Cisco SecurityAgent （CSA）
D. SSLVPN Client （SVC）
E. Cisco TrustAgent （CTA）

3.多項(xiàng)選擇題TACACS+ authentication uses whichthree packet types？ （）

A. ACCESS REQUEST
B. ACCESS ACCEPT
C. CONTINUE
D. CHALLENGE
E. REPLY
F. START

4.單項(xiàng)選擇題Which should be the key driver for a company security policy’s creation， implementation and enforcement？（）

A. the business knowledge of the IT staff
B. the technical knowledge of the IT staff
C. the company’s business objectives
D. the company’s network topology
E. the IT future directions

5.單項(xiàng)選擇題Which IOS QoS mechanism is used strictly to rate limit traffic destinedto the router itself？（）

A. Class-Based Policing
B. Control Plane Policing
C. Dual-Rate Policier
D. Single-Rate Policier
E. Class-BasedTraffic Shaper