单项选择题
What is the purpose of Spanning Tree Protocol?（）
A. to prevent routing loops
B. to create a default route
C. to provide multiple gateways for hosts
D. to maintain a loop-free Layer 2 network topology
E. to enhance the functions of SNMP
相关考题
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单项选择题
What is the function of the CSMA/CD algorithm in Ethernet technologies?（）
A. defines how the media is accessed
B. supplies a token to determine which host has access to the media
C. defines the encoding of electrical signals on the wire
D. determines the preamble bits -
单项选择题
What value is primarily used to determine which port becomes the root port on each non root switch in a spanning-tree topology?（）
A. path cost
B. lowest port MAC address
C. VTP revision number
D. highest port priority number
E. port priority number and MAC address -
单项选择题
What is the purpose of the OSPF router ID in a OR/BOR election?（）
A. It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point network
B. It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF router
C. It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access network
D. It is used to determine which interfaces will send Hello packets to neighboring OSPF routers
