CCNA Discovery 1.9

1. What should a network administrator do first after receiving a call from a user who cannot access the company web server?

• Ask the user what URL has been typed and what error message displays.

2. A customer called the cable company to report that the Internet connection is unstable. After trying several configuration changes, the technician decided to send the customer a new cable modem to try. What troubleshooting technique does this represent?
• trial-and-error


3. Only one workstation on a particular network cannot reach the Internet. What is the first troubleshooting step if the divide-and-conquer method is being used?
• Check the workstation TCP/IP configuration.

4. Which two troubleshooting techniques are suitable for both home networks and large corporate networks? (Choose two.)
• running network monitoring applications
• keeping spare switches, routers, and other equipment available

5. Identify two physical-layer network problems. (Choose two.)
• hardware failure

6. Which ipconfig command requests IP configuration from a DHCP server?
• ipconfig /all


7. What command is used to determine the location of delay for a packet traversing the Internet?
• tracert

8. What command is used to determine if a DNS server is providing name resolution?
• nslookup


9. Which troubleshooting method begins by examining cable connections and wiring issues?
• bottom-up

10. A technician suspects that a Linksys integrated router is the source of a network problem. While troubleshooting, the technician notices a blinking green activity LED on some of the ports. What does this indicate?
• There are no cables plugged into those ISR ports.

11. A PC is plugged into a switch and is unable to connect to the network. The UTP cable is suspected. What could be the problem?
• A crossover cable is being used.

12. Refer to the graphic. What configuration is incorrect in the network shown?
• The Linksys integrated router does not support wireless.

13. Which three settings must match on the client and access point for a wireless connection to occur? (Choose three.)

• antennae type


14. A technician is troubleshooting a security breach on a new wireless access point. Which three configuration settings make it easy for hackers to gain access? (Choose three.)

• broadcasting the SSID
• using open authentication
• enabling MAC address filters


15. Refer to the graphic. The wireless host cannot access the Internet, but the wired host can. What is the problem?

• The host IP address is incorrect.


16. Refer to the graphic. What configuration is incorrect in the network shown?
• The host IP address is incorrect.


17. When acting as a DHCP server, what three types of information can an ISR provide to a client? (Choose three.)
• physical address

• default gateway
• static IP address


18. What two items could be checked to verify connectivity between the router and the ISP? (Choose two.)
• router status page
• wireless card settings


19. A technician is unsuccessful in establishing a console session between a PC and a Linksys integrated router. Both devices have power, and a cable is connected between them. Which two troubleshooting steps could help to diagnose this problem? (Choose two.)

• Ensure the SSID is the same on both devices.
• Ensure the encryption type on both devices match.

20. Network baselines should be performed in which two situations? (Choose two.)
• after the network is installed and running optimally
• after several computers are added to the network

21. Typically, help desk personnel assist end users in which two tasks? (Choose two.)

• determining if other users are currently logged into the computer
• updating network diagrams and documentation

22. How does remote-access software help in the troubleshooting process?
• Remote access uses a live chat feature.

23. Which two items should be added to the documentation following a troubleshooting event? (Choose two.)

• accurate current network infrastructure diagrams
• results of successful and unsuccessful troubleshooting steps