5.9 Troubleshoot IP Communications Quiz

Which TCP/IP utility gives you the following output?

Arp -a. The arp -a command shows the current entries in the computer's ARP cache.

Which of the following tools would you use to view the MAC addresses associated with IP addresses that the local workstation has contacted recently?

Arp. Use the arp command to view the MAC addresses associated with IP addresses that the local workstation has contacted recently. When a workstation uses ARP to find the MAC address of an IP address, it places that information in its ARP table.

You are troubleshooting a connectivity problem on a Linux server. You are able to connect to another system on the local network, but are not able to connect to a server on a remote network. You suspect that the default gateway information for the system may be configured incorrectly. Which of the following commands would you use to view the default gateway information on the Linux server?

Ifconfig. Use the ifconfig command on systems running Linux to view information on the TCP/IP configuration of network adapters.

You work in an office that uses Linux servers and Windows servers. The network uses both the TCP/IP protocol. The Linux server is used as an FTP server. Today you have received several calls from people who are unable to contact the Linux server at its known IP address. You are sitting at the Linux server and want to check its IP address. Which command should you use?

Ifconfig. Use the ifconfig command to show the TCP/IP configuration for a Linux computer.

Which TCP/IP utility gives you the following output?

Ipconfig. Ipconfig command shows the computer's TCP/IP configuration information.

You have been called in to troubleshoot a connectivity problem on a newly installed Windows Server 2016 system. The system is operating satisfactorily and is able to communicate with other systems on the local network. However it is unable to access any systems on other segments of the corporate network. You suspect that the default gateway parameter for the system has not been configured, or may be configured incorrectly. Which of the following utilities are you most likely to use to view the default gateway information for the system?

Ipconfig. Use the ipconfig utility to view the TCP/IP configuration of a Windows Server 2003 system. The information displayed by ipconfig includes default gateway information.

Which TCP/IP utility gives you the following output?

Netstat -a. Netstat -a shows you the status of all connections and listening ports.

Which TCP/IP utility gives you the following output?

Netstat -r. Netstat -r shows you the computer's route table.

Which command displays network activity statistics for TCP, UDP, and IP?

Netstat -s. Netstat -s displays network activity statistics for TCP, UDP, and IP.

Examine the following output: Active ConnectionsProto Local Address Foreign Address StateTCP SERVER1:1036 localhost:4832 TIME_WAITTCP SERVER1:4798 localhost:1032 TIME_WAITTCP SERVER1:1258 pool-141-150-16-231.mad.east.ttr:24076 CLOSE_WAITTCP SERVER1:2150 cpe-66-67-225-118.roc.res.rr.com:14100 ESTABLISHEDTCP SERVER1:268 C872c-032.cpe.net.cale.rers.com:46360 ESTABLISHEDTCP SERVER1:2995 ip68-97-96-186.ok.ok.cox.net:23135 ESTABLISHED Which of the following utilities produced this output?

Netstat.

Your computer is sharing information with a remote computer using the TCP/IP protocol. Suddenly, the connection stops working and appears to hang. Which command can you use to check the connection?

Netstat. Use the netstat command to check the status of a TCP connection.

Examine the following output. Reply from 64.78.193.84: bytes=32 time=86ms TTL=115Reply from 64.78.193.84: bytes=32 time=43ms TTL=115Reply from 64.78.193.84: bytes=32 time=44ms TTL=115Reply from 64.78.193.84: bytes=32 time=47ms TTL=115Reply from 64.78.193.84: bytes=32 time=44ms TTL=115Reply from 64.78.193.84: bytes=32 time=44ms TTL=115Reply from 64.78.193.84: bytes=32 time=73ms TTL=115Reply from 64.78.193.84: bytes=32 time=46ms TTL=115 Which of the following utilities produced this output?

Ping

You work in an office that uses Linux servers and Windows servers. The network uses the TCP/IP protocol. You are sitting at a workstation that uses Windows 10. An application you are using is unable to contact a Windows server named FileSrv2. Which command can you use to determine whether your computer can still contact the server?

Ping. On a TCP/IP-based network, you can use the ping command to check connectivity between a source and destination computer.

Which TCP/IP utility gives you the following output?

Ping. The output of the ping command shows you the results of four echo request/reply contacts with a destination host.

While working on a Linux server, you are unable to connect to Windows Server 2016 system across the Internet. You are able to ping the default gateway on your own network, so you suspect that the problem lies outside of the local network. Which utility would you use to track the route a packet takes as it crosses the network?

Traceroute. Traceroute is a Linux utility that allows you to track the route of a packet as it traverses the network.