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单选题A gateway machine has access to the Internet and is trying to reach a machine on the Internet called cactus.org. Although the gateway machine cannot reach cactus.org， another network across town is able to reach cactus.org. Furthermore， the gateway mac

题目
单选题
A gateway machine has access to the Internet and is trying to reach a machine on the Internet called cactus.org. Although the gateway machine cannot reach cactus.org， another network across town is able to reach cactus.org. Furthermore， the gateway machine can reach the network across town， but cannot ping the cactus.org. Which of the following tools will best help diagnose the location of the problem？（）
A

iptrace

B

netstat

C

tcpdump

D

traceroute

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相似问题和答案

第1题：

Each machine in the ineternet is assigned a unique network address, called__(71)__,that is used to identify the machine for communication purposes.

A.MAC address

B.IP address

C.host address

D.domain name address


正确答案：B
在因特网中的每一台机器都被分配了一个唯一的网络地址，称之为IP地址，它被用来标识机器以达到通信的目的。

第2题：

An administrator replaced a router with a switch. End users are able to access network shares butare not able to access the Internet. Which of the following is the BEST explanation why the usersare unable to access the Internet?（）

A. Router routes traffic between different networks and a switch does not

B. The new switch is faulty and needs to be replaced and configured correctly

C. The firewall needs to be setup to allow traffic to reach the Internet

D. The switch needs to be setup to forward data traffic to the Internet


参考答案：A

第3题：

代理服务器很为重要的一点就是它有一种防火墙的功能,从而一定程度上保证了安全性。而这种功能是由()决定的。

A.Internet链路级网关（Gateway）

B.Internet控制级网关（Gateway）

C.Internet局部级网关（Gateway）

D.Internet逻辑级网关（Gateway）


参考答案：A

第4题：

代理服务器很为重要的一点就是它有一种防火墙的功能，从而一定程度上保证了安全性。而这种功能是由（）决定的。

  • A、Internet链路级网关（Gateway）
  • B、Internet控制级网关（Gateway）
  • C、Internet局部级网关（Gateway）
  • D、Internet逻辑级网关（Gateway）

正确答案:A

第5题：

Each machine in the internet is assigned a unique network address，called （ ） ，that is used to identify the machine for communication purposes.

A.MAC address
B.IP address
C.host address
D.domain name address

答案：B
解析：
在互联网上的每个计算机都被分配了一个IP地址，这个地址是用来和其他计算机通信的。 A．MAC地址 B．IP地址 C．主机地址 D．域名地址

第6题：

In enterprises, the gateway is the computer that(71) the traffic from a workstation to the outside network that is serving the Web pages. In homes ,the gateway is the(72) that connects the user to the internet.

A．finds

B．searches

C．routes

D．tracks


正确答案：C

第7题：

A user is unable to reach the Internet. The technician asks the user to do an IPCONFIG /all. The userreports that their IP address is 172.16.1.18, subnet mask is 255.255.255.0, and their default gateway is 172.16.1.18. Which of the following is the cause of the problem?（）

A. Default gateway

B. Network cable

C. Subnet mask

D. CNAME record


参考答案：A

第8题：

Each machine in the internet is assigned a unique network address,called（）,that is used to identify the machine for communication purposes

A.MAC address

B.IP address

C.host address

D.domain name address


正确答案：B

第9题：

A new building has been added to the enterprise campus network， providing client access for desktop PCs， laptops， and IP phones for employees and guests. During verification， only a few laptops using  wireless are reported to have problems， while other desktops， IP phones， and most other wireless laptops are fully operational. Additional information received about the problem indicates that， while the problematic wireless laptops cannot reach internal corporate websites， they can reach the Internet.  Where should troubleshooting about this connectivity issue be focused？（）

  • A、client network configuration
  • B、VLAN mapping
  • C、routing protocols
  • D、first-hop redundancy protocol

正确答案:A

第10题：

Each machine in the internet is assigned a unique network address,called（）,that is used to identify the machine for communication purposes

  • A、MAC address
  • B、IP address
  • C、host address
  • D、domain name address

正确答案:B

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