You are unable to telnet to a router at address 203.125.12.1 from a workstation with the IP address 203.125.12.23. You suspect that there is a problem with the IP protocol stack in your PC. Which of the following actions is most likely to confirm your dia
题目
You are unable to telnet to a router at address 203.125.12.1 from a workstation with the IP address 203.125.12.23. You suspect that there is a problem with the IP protocol stack in your PC. Which of the following actions is most likely to confirm your diagnosis?
A. ping 127.0.0.0
B. ping 203.125.12.1
C. telnet 127.0.0.1
D. ping 127.0.0.1
E. tracert 203.125.12.1
F. None of the above
相似考题
参考答案和解析
D 解析：Explanation:
Every Windows based PC uses the 127.0.0.1 as the local loopback IP address. Every PC will respond to this local IP address if the TCP/IP stack is correctly installed and running on the machine. If you cannot ping the loopback address of 127.0.0.1, then something is wrong with the TCP/IP protocol stack
更多“You are unable to telnet to a router at address 203.125.12.1 from a workstation with the I ”相关问题
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第1题：
公司有2台Cisco路由器,路由器的Telnet服务以前是关闭的,现在为了方便管理,需要启用Telnet,并设置Telnet密码为cbn152,那么需要在路由器上进行()配置。A.Router（config）#line console 0Router（config-line）#password cbn152
B.Router（config）#line console 0Router（config-line）#login Router（config-line）#password cbn152
C.Router（config）#line vty 04Router（config-line）#password cbn152
D.Router（config）#line vty 04Router（config-line）#login Router（config-line）#password cbn152
参考答案：D
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第2题：
在某台Cisco路由器中定义一个名为test的DHCP地址池(192.168.3.0/26)，并保留192.168.3.62/29的IP地址。下列正确的配置语句是(29)。
A．Router(config)#ip dhcp pooltest Router(dhcp-config)#network 192.168.3.00.0.0.63 Router(dhcp-config)#ip dhcp excluded-address192.168.3.62
B．Router(config)#ip dhcp poo1 test Router(dhcp-config)#network 192.168.3.0255.255.255.192 Router(dhcp-config)#ip dhcp excluded-address 192.168.3.62255.255.255.248
C．Router(config)#ip dhcp poo1 test Router(dhcp-config)#network 192.168.3.0/26 Router(dhcp-config)#ip dhcp excluded-address 192.168.3.62/29
D．Router(config)#ip dhcp excluded-address 192.168.3.56192.168.3.62 Router(config)#ip dhcp pool test Router(dhcp-config)#network 192.168.3.0/26
正确答案：D
解析：子网地址是DHCP服务器可以分配给DHCP客户的有效IP地址范围。在DHCP Pool配置模式下，使用命令“networknetwork-number＞[mask|/prefix-length]”配置IP地址池的子网地址和子网掩码。其中，子网掩码参数允许以两种形式表达，一种形式常见的点分十进制数表达形式(如 255.255.255.192)，另一种形式是给出掩码前缀的长度，即掩码位为“1”的个数，如“255.255.255.192”可以写成“/26”。本试题中，配置DHCP地址池192.168.3.0/26的语句如下：
Router(dhcp-config)#network192.168.3.0255.255.255.192
或Router(dhcp-contig)#network192.168.3.0/26
可以在全局配置模式“Router(config)#”下，使用“ip dhcp excluded-address low-address[high-address]”命令将要保留的地址从IP地址池中排除，使之成为不能动态分配的地址。本试题中，需要排除的IP地址范围是192.168.3.62/29。其中，“/29”是子网掩码255.255.255.248的前缀的长度。由于IP地址192.168.3.62的二进制表示是“1100 0000 1010 1000 0000 0011 1110”，其中阴影部分是子网掩码覆盖的比特范围，因此192.168.3.62/29所表达的IP地址范围是192.168.3.56-192.168.3.63。再由于192.168.3.63是 192.168.3.0/26网段的直接广播地址，需要排除，因此保留IP地址范围192.168.3.62/29的配置语句如下：
Router(config)#ip dhcp excluded-adclress 192.168.3.56 192.168.3.62
本试题选项A的“ip dhcp excluded-address192.168.3.62”仅排除单个IP地址192.168.3.62。选项B和选项C保留IP地址配置命令所在的配置模式有误，且不允许出现选项B的“ip dhcp exclude_address192.168.3.62 255.255.255.248”和选项C的“ip dhcp excluded-address 192.168.3.62/29”等带有子网掩码的格式。 -
第3题：
使用哪组命令可将路由器配置为 DHCP 路由器，从而将 IPv4 地址分配给 192.168.100.0/23 LAN，同时为静态分配保留前 10 个和最后一个地址？
A.dhcp pool LAN-POOL-100 ipdhcp excluded-address 192.168.100.1 192.168.100.9 ipdhcp excluded-address 192.168.100.254 network 192.168.100.0 255.255.254.0 default-router 192.168.101.1#B.ipdhcp excluded-address 192.168.100.1 192.168.100.10 ipdhcp excluded-address 192.168.100.254 ipdhcp pool LAN-POOL-100 network 192.168.100.0 255.255.254.0 default-router 192.168.100.1#C.ipdhcp excluded-address 192.168.100.1 192.168.100.10 ipdhcp excluA. ip route-static -
第4题：
下面哪条命令用于在路由器上添加进入telnet的登录口令()。
A.Router(Config)linevty04
B.Routerpasswordkkk
C.Router(Config)loginpasswordkkk
D.Routerlinevty04
正确答案：A
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第5题：
Do you need any rice? I can get some（） you（）the supermarket.
Ato；from
Bfor；to
Cfor；from
B
略