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CCNA系列认证 问题列表
问题
单选题Which device enables a router serial interface to connect to the ISDN BRI?（）A
NT2B
NT1C
TED
TAE
TE1
问题
多选题What are two advantages of Layer 2 Ethernet switches over hubs?（）Adecreasing the number of collision domainsBfiltering frames based on MAC addressesCallowing simultaneous frame transmissionsDincreasing the size of broadcast domainsEincreasing the maximum length of UTP cabling between devices
问题
单选题Refer to the exhibit. Which rule does the DHCP server use when there is an IP address conflict?（）A
The address is removed from the pool until the conflict is resolved.B
The address remains in the pool until the conflict is resolved.C
Only the IP detected by Gratuitous ARP is removed from the pool.D
Only the IP detected by Ping is removed from the pool.E
The IP will be shown, even after the conflict is resolved.
问题
单选题What is one benefit of PVST+？（）A
PVST+reduces the CPU cycles for all the switches in the networkB
PVST+automatically selects the root bridge location，to provide optimiz…C
PVST+allow the root switch location to be optimized per vlan.D
PVST+supports Layer 3 load balancing without loops.
问题
多选题In EIGRP, what kind of route information is stored in RAM and maintained by way of hello packets and update packets?（）ANeighbor TableBSRF TableCRTP TableDTopology TableEQuery TableFDual Table
问题
单选题急性肾小球肾炎最主要的临床表现是（）A
蛋白尿、氮质血症、高血压B
水肿、少尿、血尿、高血压C
水肿、少尿、蛋白尿、血尿D
水肿、少尿、高血压、蛋白尿E
血尿、少尿、高血压、氮质血症
问题
多选题Which of the following describes the roles of devices in a WAN (Choose three.)（）。AA CSU/DSU terminates a digital local loop.BA modem terminates a digital local loop.CA CSU/DSU terminates an analog local loop.DA modem terminates an analog local loop.EA router is commonly considered a DTE device.FA router is commonly considered a DCE device.