單項(xiàng)選擇題For acceptable voice calls， the packet error rate should be less than（）%  

A. 0.01
B. 0.1
C. 1
D. 2.5


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1.多項(xiàng)選擇題What are three primary activities in the cycle of building an enterprise security strategy？（）

A. activity audit
B. administration
C. policy establishment
D. technology implementation

2.多項(xiàng)選擇題Which two of these are recommended practices with trunks？ （）

A. use ISL encapsulation
B. use 802.1q encapsulation
C. set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation
D. use VTP server mode to support dynamic propagation of VLAN information across the network 
E. set DTP to desirable and desirable with encapsulation negotiate to support DTP protocol negotiation.

3.單項(xiàng)選擇題When is the site-to-site remote access model appropriate？ （）

A. for multiple ISDN connections
B. for modem concentrated dial-up connections
C. for a group of users in the same vicinity sharing a connection
D. for use by mobile users

7.單項(xiàng)選擇題You are the Cisco Network Designer. Which of these is least important when determining howmany users a NAS can support？（）

A. bandwidth
B. number of plug-ins per scan
C. total number of network devices
D. number of checks in each posture assessment

8.單項(xiàng)選擇題Acme Nutrition manufactures a wide variety of vitamin supplements. It has a single manufacturing facility with 3 regional warehouses and 16 district sales offices. Currently the manufacturing facilityrequires 210 IP addresses； each warehouse requires 51 IP addresses； each district sales officerequires 11 IP addresses； and the IP WAN requires 38 IP addresses. if Acme Nutrition plans for20 percent growth in facilities， how many Class C subnets will the district sales offices require？（）

A. 19 （3 from the warehouse range and 16 from a separate Class C address）
B. 19 （3 from the warehouse block， 15 from a separate Class C block and 1 from the IP WAN block）
C. 20 （4 from the warehouse range，15 from a separate Class C block and 1 from the IP WAN block）
D. 16 （3 from the warehouse range and 13 from a separate Class C address）

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