【填空题】
14、地下燃气管道不得在堆积___的场地下面穿越，并不宜与___同沟敷设。
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易燃、易爆材料和具有腐蚀性液体|其他管道或电缆
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30、燃气属于易燃、易爆的危险品。因此，要求燃气必须具有独特的、可以使人察觉的气味。使用中当燃气发生泄漏时，应能通过气味被人发现；在重要场合，还应设置检漏仪器。对无臭或臭味不足的燃气应加臭。经长输管线输送的天然气，一般在___进行加臭。
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What is an example of social engineering？___
A. gaining access to a computer by observing the user login credentials
B. gaining access to a build through an unguarded entrance
C. gaining access to a server by using a USB stick
D. gaining access to a server room by posing as local IT
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Which type of Layer 2 attack enables the attacker to intercept traffic that is intended for one specific recipient？___
A. BPDU attack
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C. MAC address spoofing
D. CAM table overflow
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Which about nested policy maps in a zone-based firewall is true ?___
A. They are limited to two leve ls in a hierarchical policy
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In which configuration do you configure the ip ospf authentication key 1 command？___
A. routing process
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Which statement about command authorization and security contexts is true？___
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D. The enable. 15 user ang admins with chang to permission ha e dfferent command authorization levels pertontext
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Which command do you enter to enable authentication for OSPF on an interface？___
A. router（config-if）#ip ospf message-digest-key 1 md5 CIS COPASS
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What feature defines a campus area network？___
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Which type of attack most commonly involves a direct attack on a network？___
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What information does the key length provide in an encryption algorithm?___
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How do you verify TaCACS+ connectivity to a device？___
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【单选题】
Which term best describes the concept of preventing the modification of data in transit and in storage？___
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Which loS command is used to define the authentication key for ntp？___
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Which feature defines a campus area network？ ___
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What technology can you use to provide data confidentiality data integrity and data origin authentication on your network？___
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What is the effect of the asa command crypto isakmp nat-traversal？___
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Which NAT type allows objects or groups to reference an IP address ？___
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Which Auto NAT policies are processed first？___
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