CHAPTER REVIEW QUESTIONS
1. You receive a report that a user’s computer is responding slowly to user network requests. You want a quick way to see which type of network traffic the server is receiving. You use Network Monitor. You want to see whether any general broadcast traffic is being sent. Which counter should you enable?
a. Nonunicasts/Interval b. Unicasts/Interval
c. Bytes Sent/Interval d. Bytes Received/Interval ANSWER
a. Broadcast traffic, by definition, is nonunicast traffic. Answer b is incorrect because traffic displayed using this counter is again, by definition, not broadcast traffic. Answers c and d are incorrect because they include more than just broad-cast traffic and you will not be able to distinguish broadbroad-cast traffic from unibroad-cast traffic.
2. You set up Performance Logs And Alerts to send a message to ComputerB to notify an operator when the network bandwidth utilization on ComputerA reaches a certain level. However, ComputerB never receives the message sent from ComputerA. What must you do to enable messages to be sent by ComputerA and received by ComputerB? Choose all that apply.
a. On ComputerA, start the Messenger service.
b. On ComputerA, start the Alerter service.
c. On ComputerB, start the Messenger service.
d. On ComputerB, start the Alerter service.
ANSWER
b and c. To successfully send messages, you must start the Alerter service on the sending computer and the Messenger service on the receiving computer.
38 TEXTBOOK CHAPTER 9 ANSWERS: MAINTAINING A NETWORK INFRASTRUCTURE
3. You suspect that a virus has infected your computer, which runs Win-dows Server 2003. You believe this virus transmits data from your server over the network using a specific port. You want to determine which process is using a specific port.
Which command should you run?
a. Nbtstat -RR b. Nbtstat -r
c. Netstat -a d. Netstat -o ANSWER
d. Netstat -o displays the owning PID associated with each connection. Answers a and b are incorrect because Nbtstat is a NetBIOS name resolution utility and does not provide port information. Answer c is incorrect because, although it lists all connections and listening ports, it does not list PIDs.
4. A user in the branch office reports that he cannot use Microsoft Internet Explorer to open a commonly used Web site on the Internet. At your cli-ent computer in the main office, you are able to ping the target address.
What should you do to troubleshoot this problem? Choose all that apply.
a. From the user’s client computer, ping the destination address.
b. From the user’s client computer, use the Network Repair feature.
c. From the DNS server, perform a simple query test.
d. From the DNS server, perform a recursive query test.
ANSWER
a and b. Answer a is correct because pinging the destination address indicates whether the client can communicate with the Web site. Answer b is correct because the Repair feature performs a set of common troubleshooting commands that might solve the problem. Answers c and d are incorrect because there is no reason to suspect the DNS server as the source of the problem. In this scenario, you should investigate client issues before considering the DNS server as the source of the problem. Furthermore, because pinging the IP address was unsuc-cessful, name resolution was not performed.
TEXTBOOK CHAPTER 9 ANSWERS: MAINTAINING A NETWORK INFRASTRUCTURE 39
5. A user in the branch office reports that he cannot use Internet Explorer to view a commonly used Web site on the Internet. At your client computer in the main office, you run Nslookup to verify the target address and receive the correct address. At the user’s client computer, you also run Nslookup, but the address returned is incorrect. What should you do to troubleshoot this problem? Choose all that apply.
a. Verify that the client is using the correct DNS servers.
b. Run Ipconfig /flushdns.
c. Run Ipconfig /registerdns.
d. Run Ipconfig /renew.
ANSWER
a and b. You should first ensure the client is configured to use the correct DNS servers, and then clear the DNS resolver cache. Answer c is incorrect because reg-istering the client’s DNS address will not solve the Web site’s connection problem.
Answer d is incorrect because renewing the existing lease will not change any configuration options on the client.
6. You install a new application, which reports that it is installing a service on the computer. However, when you attempt to run the application for the first time, it cannot start. You inspect the event log to determine the nature of the problem. You receive an error that states, “The service did not start due to a logon failure.” Which of the following steps should you take to troubleshoot this problem?
a. Verify the service has been configured to start automatically.
b. Change the password to the same name as the account.
c. Verify the correct password has been supplied on the properties page of the service.
d. Verify the account has been granted administrative rights.
ANSWER
c. The correct password must be specified on the properties page for the service to use the account to log on. Answer a is incorrect. Although you might need to configure the service account to start automatically, the error message indicates a logon problem. Changing the service start behavior will not fix a logon problem.
Answer b is incorrect because there is no dependency between the name of the account and the password. Answer d is incorrect because you should grant the least amount of privilege required for a service to perform its functions.
40 TEXTBOOK CHAPTER 9 ANSWERS: MAINTAINING A NETWORK INFRASTRUCTURE
7. You install a new application on a member server. The application reports that it is installing a service on the computer. The installation for the service requests a username and password to run the service. You provide the name DOMAIN1\Service1. However, when you attempt to run the application for the first time, it is unable to start. You suspect that the account has not been given appropriate rights to start the service.
What do you do?
a. On the member server, grant the Service1 account the Log On As A Service right.
b. In the domain, grant the Service1 account the Log On As A Service right.
c. On the member server, grant the Service1 account the Log On As A Batch Job right.
d. In the domain, grant the Service1 account the Log On As A Batch Job right.
ANSWER
a. Service accounts must have the Log On As A Service right.
8. A user complains that after she rebooted her computer, she no longer has access to the Internet. You examine her network settings and see that she has an IP address in the wrong network subnet and that her default gate-way is actually part of a test network. You suspect a rogue DHCP server.
Which tool should you use to locate the DHCP server?
a. Ipconfig b. Dhcploc c. Netdiag d. Netstat ANSWER
b. Use Dhcploc to locate DHCP servers on your network, including rogue DHCP servers. Answer a is correct because Ipconfig will only indicate whether the client is configured to use DHCP and the address of the DHCP server it last used.
Answer c is incorrect because Netdiag does not list all DHCP servers on your net-work. Answer d is incorrect because Netstat only provides information about existing network connections of a computer running TCP/IP and network activity statistics and does list DHCP servers.
TEXTBOOK CHAPTER 9 ANSWERS: MAINTAINING A NETWORK INFRASTRUCTURE 41