【单选题】
以下关于计算机网络协议的叙述中，不正确的是___。
A. ：网络协议就是网络通信的内容
B. ：制定网络协议是为了保证数据通信的正确、可靠
C. ：计算机网络的各层及其协议的集合，称为网络的体系结构
D. ：网络协议通常由语义、语法、变换规则3部分组成
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在大型分布式信息系统中，为提高信息处理效率，减少网络拥堵，信息存储的原则是：数据应尽量___。
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【单选题】
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___ system let you run more tlian one program at a time
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【单选题】
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Which statement about zone-based firewall configuration is true？___
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【单选题】
Refer to the exhibit line in this configuration prevents the help Desk user from modifying the interface configuration.___
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【单选题】
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Which type of attack does a proxy firewall protect against ？___
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【单选题】
A specific URL has been identified as containing malware. What action can you take to block users from accidentally visiting the URl and becoming infected with malware ？___
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【单选题】
How does PEAP protect the EAP exchange ？___
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Which feature of the Cisco Email Security Appliance can mitigate the impact of snowshoe spam and sophisticated phishing attacks？___
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Refer to the exhibit【nat (inside,outside)dunamic interface】 Which translation technique does this configuration result in？___
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【单选题】
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【单选题】
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How can you detect a false negative on an IPS？___
A. View the alert on the ips
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If a switch port goes directly into a blocked state only when a superior BPDU is received， what mechanism must be in use？___
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【单选题】
what improvement does EAP-FASTv2 provide over EAP-FAST？ ___
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When users login to the Client less Ssl Vpn using https://209.165.201.2/test ,which group policy will be applied？___
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G. roup
【单选题】
Which user authentication method is used when users login to the Clientless SSLVPN portal using https://209.165.201.2/test？___
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【单选题】
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【单选题】
Which statement about the communication between interfaces on the same security level is true？___
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【单选题】
Which product can be used to provide application layer protection for tcp port 25 traffic？___
A. ESA
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D. ASA
【单选题】
which iPS mode is less secure than other options but allows optimal network through put ?___
A. inline mode
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