单选题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 cau

第1题：

第2题：

Which of the following reasons indicate why it is important to have the user demonstrate the task they are trying to perform?（）

• A、To help the technician learn how to perform the task 
• B、To determine if the user is performing the task properly 
• C、To determine if the user is authorized to perform the task 
• D、To help the technician determine if there is a better way to perform the task in question 

第3题：

第4题：

A user reports that they are unable to reach a particular website. The user had no issues reaching the site earlier in the day. Which of the following is the MOST likely cause of the lack of access？（）

• A、The VLAN is misconfigured
• B、The user has an improperly configured NIC
• C、The DHCP server is down
• D、The DNS server is down

第5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

第6题：

A user is trying to connect their new desktop to the network but is unable to get an IP address. The technician tests the cable and finds that there are too many open pairs. Which of the following wiring standards needs to be used in the replacement cable?（）

• A、568B
• B、Crossover
• C、569-A
• D、607-A

第7题：

A user is unable to print to the network printer. A print job appears in their print queue and cannotbe deleted. The user has the correct permissions to modify and delete print jobs. All other users are able to print to the network printer. Which of the following procedures should the technician try FIRST?（）

• A、Cycle the power on the network printer.
• B、Verify the network cable is connected to the printer.
• C、Reinstall the printer driver.
• D、Restart the print spooler service.

第8题：

第9题：

A user is unable to view any DVDs on their laptop which has a DVD-ROM drive installed. After further investigation, the technician realizes that there is not any DVD-ROM or CD-ROM available under the My Computer utility. Which of the following system utilities would MOST likely be used to identify and resolve this issue?（）

• A、Task Manager
• B、Device Manager
• C、DEFRAG
• D、Event Viewer

第10题：

A user is unable to connect to the network. A network technician is able to determine that there is a problem on the switch. All other users on that switch are able to connect successfully to the network. Which of the following is a probable cause？（）

• A、Switching loop is occurring on the switch.
• B、Wrong subnet mask on the switch.
• C、Incorrect SNMP settings on the switch.
• D、Port is misconfigured on the switch.