A. ACCESS REQUESTB. ACCESS ACCEPTC. CONTINUED. CHALLENG……

单项选择题Whichshouldbethekeydriverforacompanysecuritypolicy’screation，implementationandenforcement？（）

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

单项选择题WhichIOSQoSmechanismisusedstrictly toratelimittrafficdestinedtotherouteritself？（）

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

单项选择题InanL2TPvoluntarytunnelingscenario，theVPDNtunnelisterminatedbetween：（）

A. The client and the NAS.
B. The NAS andthe LNS.
C. The NAS and the LAC.
D. The client and the LNS.

单项选择题WhichoneofthefollowingisNOT asupportedIKEattribute？（）

A. PFS group.
B. Encryption algorithm.
C. Hashing Algorithm.
D. Authenticationmethod.
E. Lifetime duration.

单项选择题WithPGP，whichofthefollowingentitysignsausers’spublickey？（）

A. The sender of the message.
B. The receipient of the message.
C. The sender’s administrator who provides the sender with the PGP program.
D. A third party that belongs to what’s often known as "web of trust"， that can verify the relationship between the user and the key.
E. The vendor of the PGP program.