Ezonexam has a Class C network and you need ten subnets. You wish to have as many addresses available for hosts as possible. Which one of the following subnet masks should you use?
单选题
C
Explanation:Usingthe2n-2formula,wewillneedtouse4bitsforsubnetting,asthiswillprovidefor24-2=14subnets.Thesubnetmaskfor4bitsisthen255.255.255.240.IncorrectAnswers:A.Thiswillgiveusonly2bitsforthenetworkmask,whichwillprovideonly2networks.B.Thiswillgiveus3
举一反三
当使用下列命令配置了路由器后,将有多少地址可用于进行动态NAT转换()
题目答案
B
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暂无解析
What is the subnet for the host IP address 201.100.5.68/28?
题目答案
C
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答案解析
解析:EXPLANATION:THIS QUESTION IS MUCH EASIER THEN IT APPEARS WHEN YOU CONVERT IT TO BINARY AND DO THE BOOLEAN OPERATION AS SHOWN BELOW:IP ADDRESS 201.100.5.68 = 11001001.01100100.00000101.01000100/28 MASK = 11111111.11111111.11111111.11000000AND RESULT
On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously, resulting in a collision. Following this collision, what will the hosts do? (Select all valid answers)
题目答案
C
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解析:EXPLANATION:WHEN A HOST ON AN ETHERNET LAN HAS INFORMATION TO SEND, THE FOLLOWING STEPS ARE TAKEN:1. A DEVICE WITH A FRAME. TO SEND LISTENS UNTIL ETHERNET IS NOT BUSY.2. WHEN THE ETHERNET IS NOT BUSY, THE SENDER BEGINS SENDING THE FRAME.3. THE SENDE
请参见图示。根据showipnattranslations命令的输出,此路由器上正在使用哪种地址转换()
题目答案
C
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暂无解析
在OSPF的DR/BDR选举过程中,在路由器有相同的接口优先级情况下,什么用于确定DR或BDR()
题目答案
D
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暂无解析
TCP23是()协议端口号;UDP69是()端口号;TCP80是()端口号。
题目答案
C
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以下特殊区域中哪一个没有自动下发缺省路由()
题目答案
D
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暂无解析
Which command on router EzonexamA will assign the last usable IP address from the 192.168.32.128/28 subnetwork to a router interface?
题目答案
A
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答案解析
解析:EXPLANATION:THE LAST USABLE IP ADDRESS WOULD BE 128 + (16-2) = 142 BECAUSE ONLY THE LAST 4 BITS OF THE LAST OCTET ARE USED FOR HOST ADDRESSING.
对于使用链路状态路由协议的路由器如何选择最佳路线到达子网,下列哪项是正确的()
题目答案
B
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暂无解析
当配置一个CISCO的路由器时,缺省的DR和BDR优先级是()。
题目答案
B
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暂无解析