NTA - Lesson 3

The Internet connection at your home office is not functioning. The workstation is connected directly to a cable modem. What can you do to begin troubleshooting the cable modem's connection to the Internet?

• Power down the modem, wait a few minutes, verify all connections, then power it up.

• Obtain a firewall and place it between the cable modem and the wall jack.

• Power down the workstation, connect it directly to the wall, then power it up.

• Obtain a firewall and place it between the workstation and the cable modem.

The DHCP server was down but is now functioning properly. Your Windows workstation has finished booting, and you are working on a document. You are logged on to the system with an account that has rights as an administrator. You want to obtain an IP address on this client. However, you want to interrupt your work as little as possible. Which step will accomplish both these requirements?

• Reboot the system and log on as the same account.

• Issue the following command at a command prompt: ipconfig /renew

• Reboot the system and log on as a new account.

• Issue the following command at a command prompt: network /renew

Which TCP/IP diagnostic tool can determine the path between source and destination systems?

• The tracert command

• The ping command

• The netstat command

• The route command

Which command will display tables on your system that show you where TCP/IP packets will be sent?

• route

• traceroute

• ipconfig

• ifconfig

A system on your company's network is malfunctioning. As a result, company workstations are performing very slowly. You go to a Windows workstation that is performing slowly to try to troubleshoot the problem. Which command can help you determine the number of ports open on this system?

• ipconfig

• traceroute

• netstat

• ping

A co-worker has complained that his Web browser consistently goes to the wrong resource on the corporate intranet, even though he enters the correct DNS name. You verify that when you enter the correct name in your co-worker's browser, the browser goes to the wrong resource on the intranet. Your system does not have this problem. Which of the following should you check?

• Your co-worker's browser cache

• Your co-worker's default gateway

• The host's subnet mask

• Your co-worker's hosts file

The Internet connection at your home office is not functioning. This connection uses a cable modem. What is the first step you should perform to begin troubleshooting this problem?

• Call the cable modem company's help desk.

• Have a co-worker at a remote location ping your cable modem.

• Bypass the cable modem and connect your workstation directly to the wall.

• Move your workstation to reside behind the firewall device you have purchased.

You are using the ping utility to test system configurations and connectivity on your IPv4 network. You are able to successfully perform a loopback ping from your computer. However, you are unable to ping or communicate with other computers on your local network. A configuration on your computer is different from those on other computers on your network. Your supervisor directs you to change yours to match the others. Which configuration would change on your system to match the other systems on your network?

• The loopback address

• The subnet mask

• The default gateway

• The IP address

Which statement is true regarding IPv6?

• IPv6 automatically encrypts packets.

• IPv6 uses 32-bit addresses.

• IPv6 relies completely upon the router to manage packets.

• IPv6 does not work on mobile phones.

Which TCP/IP service will automatically specify your IP address and other configurations when you initialize your workstation?

• Domain Name System (DNS)

• Classless Interdomain Routing (CIDR)

• Automatic Private IP Addressing (APIPA)

• Dynamic Host Configuration Protocol (DHCP)