单选题What is the reason for running spanning-tree in a Cisco Single-Site Secure Network Foundation Solution？（）ATo protect the network in case someone inadvertently creates a physical loop in itBTo ensure that if a device fails another device automatically take over for itCTo allow management of all network devicesDTo aggregate logical network groups together at one central point
单选题
What is the reason for running spanning-tree in a Cisco Single-Site Secure Network Foundation Solution？（）
A
To protect the network in case someone inadvertently creates a physical loop in it
B
To ensure that if a device fails another device automatically take over for it
C
To allow management of all network devices
D
To aggregate logical network groups together at one central point
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单选题What is the reason for running spanning-tree in a Cisco Single-Site Secure Network Foundation Solution？（）ATo protect the network in case someone inadvertently creates a physical loop in itBTo ensure that if a device fails another device automatically take over for itCTo allow management of all network devicesDTo aggregate logical network groups together at one central point
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单选题To which switch or switches should you provide redundant links in order to achieve high availability with reliable fast convergence in the enterprise campus？（）A to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 2 linkB to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 3 linkC to two core switches from redundant distribution switches connected with Layer 2 linkD to two core switches from redundant distribution switches connected with Layer 3 linkE to two core switches running Cisco NSF and SSO from two redundant distribution switches running Cisco NSF and SSO
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问答题What is the next state of initial in spanning-tree protocol？