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单选题
婴儿生后2～3个月时红细胞数降至3.0×1012/L，血红蛋白量降至110g/L的是（ ）。
A
生理性贫血
B
溶血性贫血
C
营养性缺铁性贫血
D
营养性巨幼红细胞性贫血
E
再生障碍性贫血
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单选题What is the purpose of assigning an IP address to a switch?（）A
Provides local hosts with a default gateway addressB
Allows remote management of the switch.C
Allows the switch to respond to ARP requests between two hostsD
Ensures that hosts on the same LAN can communicate with each other.
考题
单选题What best describes the features of the Cisco 850 Series routers？（）A
integrates data，security，and wirelessB
integrates data，ecurity，wireless and application optimizationC
integrates voice，data，security，wireless and application optimizationD
integrates data and wireless
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单选题Which dose the frame-relay interface-dlinterface-dlcci command configure?（）A
remote DLCI on the main interfaceB
local DLCI on the main interfaceC
local DLCI on the subinterfaceD
remote DLCI on the subinterface
考题
多选题Why does the data communication industry use the layered OSI reference model (Choose two.)（）。AIt divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting.BIt enables equipment from different vendors to use the same electronic components, thus saving research and development funds.CIt supports theevolution of multiple competing standards, and thus provides business opportunities for equipment manufacturers.DIt encourages industry standardization by defining what functions occur at each layer of the model.EIt provides a means by which changes in functionality in one layer require changes in other layers.
考题
多选题Which of the commands below can you use to configure a default route?（）ATK1(config)# ip route 0.0.0.0 0.0.0.0 E0BTK1(config)# ip route 0.0.0.0 255.255.255.255 S0CTK1(config-interface)# ip route 255.255.255.255 0.0.0.0 192.168.1.21DTK1(config)# ip route 0.0.0.0 0.0.0.0 192.168.1.21ETK1(config)# ip route 0.0.0.0 192.168.1.21 255.255.255.255FTK1# ip default-network 0.0.0.0 192.168.1.21 255.255.255.255
考题
单选题Assuming default setting，how can you erase the VTP database of VLANs on a CISCO IOS switch running in VTP server mode？（）A
Enable VTP pruningB
From privileged mode，erase the startup configuration file，then reload.C
From privileged mode，erase the vlan date file，then reload.D
Cycle the switch power.
考题
多选题Which destination addresses will be used by Host A to send data to Host C?（）Athe IP address of Switch 1Bthe MAC address of Switch 1Cthe IP address of Host CDthe MAC address of Host CEthe IP address of the router's E0 interfaceFthe MAC address of the router's E0 interface
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单选题患儿，男，5岁，发热1天，有咽痛，家长给予头孢氨苄口服，次日热不退，全身出现弥漫性针尖大小红色皮疹，疹间皮肤充血，咽红、扁桃体Ⅱ度肿大，表面有脓性分泌物。该患儿3周后出现眼睑水肿、尿少、血尿、头痛，最可能出现的并发症是（）A
肾病综合征B
泌尿系统感染C
急性肾小球肾炎D
脑炎E
肺炎
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单选题Which one of the following commands would you enter to terminate a VTY line session?（）A
closeB
disableC
disconnectD
suspendE
exitF
None of the above
考题
多选题Which three statements accurately describe layer 2 Ethernet switches？（）AMicrosegmentation decreases the number of collisions on the network.Bif a switch receives a frame for an unkown destination，it uses ARP to resolve the address.CSpanning Tree Protocol allows switches to automatically share vlan information.DIn a properly functioning network with redundant switched paths，each swiched aegment will contain oneroot bridge with all its ports in the forwarding state.All other switches in that broadcast domain will haveonly one root port.EEstablishing vlans increases the number of broadcast domains.FSwitches that are configured with vlans make forwarding decisions based on both layer 2 and layer 3address information.
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多选题什么是两个改进，OSPFv3支持在OSPFv2的？（）A它需要使用ARP的。B它可以支持单条链路多个IPv6子网。C最高支持到OSPFv3协议的通过一个共同的链接2实例。D它在路线链接，而不是在网络上。
考题
多选题What are two benefits of the Cisco TAC?（）AHaving improved network availability and performanceBHaving Access to the current software releases and support for software packagesCHavingThe ability to access a group of expertsDHaving direct or indirect access to the Cisco TAC global organization
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多选题Cisco Configuration Assistant supports a variety of virtual private networks. Which three types of VPN can be configured by using CCA？（）ADMVPNBMPLS VPNCIPv6 VPNDCisco IOS SSL VPNEsite-to-site VPNFCisco Easy VPN
考题
单选题年长儿每日由碳水化合物所提供能量应占总需能量的（）A
70%～75%B
50%～60%C
45%D
30%E
15%
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