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1. 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 NIC, and then check the cabling.
* Test all cables, and then test layer by layer up the OSI model.
* Attempt to Telnet, and then test layer by layer down the OSI model.
* Check the workstation TCP/IP configuration.

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

* Ask the user to log off and log on again.
* Ask the user what URL has been typed and what error message displays.
* Reboot the web server.
* Replace the NIC of the computer.

3. Identify two physical-layer network problems. (Choose two.)
* hardware failure
* loose cable connections
* device driver configuration
* software configuration
* devices not able to ping

4. Which ipconfig command requests IP configuration from a DHCP server?

* ipconfig /renew
* ipconfig /release
* ipconfig
* ipconfig /all


5. What command is used to determine the location of delay for a packet traversing the Internet?
* ipconfig
* ping
* tracert
* netstat
* nslookup


6. What command is used to determine if a DNS server is providing name resolution?
* ipconfig
* nslookup
* tracert
* netstat

7. Which troubleshooting method begins by examining cable connections and wiring issues?
* top-down
* substitution
* divide-and-conquer
* bottom-up

8. Refer to the graphic. What configuration is incorrect in the network shown?
* The wired connection is the wrong type of cable.
* The Linksys integrated router does not support wireless.
* The host IP address is incorrect.
* The host subnet mask is incorrect.
* The host default gateway is incorrect.


9. 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?
* Self-diagnostics have not completed.
* The ports are operational, but no traffic is flowing.
* There are no cables plugged into those ISR ports.
* The ports have cables plugged in, but they are not functional.
* The power supply is the source of the problem.
* The ports are operational and are receiving traffic.

10. 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?
* top-down
* bottom-up
* trial-and-error
* divide-and-conquer
* substitution

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?
* The RJ-45 connectors are crimped onto the cable jacket.
* A crossover cable is being used.
* A straight-through cable is being used
* The connectors at both ends of the cable are RJ-45.



12. 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.)
* configuring NAT
* broadcasting the SSID
* enabling MAC address filters
* using the default internal IP address
* using open authentication
* using DHCP to provide IP addresses


13. Which three settings must match on the client and access point for a wireless connection to occur? (Choose three.)
* antennae type
* encryption key
* MAC address filters
* SSID
* authentication
* MD5 checksum

14. Refer to the graphic. The wireless host cannot access the Internet, but the wired host can. What is the problem?
* The integrated router internal IP address is incorrect.
* The integrated router Internet IP address is incorrect.
* The host WEP key is incorrect.
* The host IP address is incorrect.
* The host subnet mask is incorrect.
* The host default gateway is incorrect.

15. When acting as a DHCP server, what three types of information can an ISR provide to a client? (Choose three.)
* MAC address
* default gateway
* physical address
* static IP address
* dynamic IP address
* DNS server address

16. Which two troubleshooting techniques are suitable for both home networks and large corporate networks? (Choose two.)
* having a backup ISR
* running network monitoring applications
* documenting the troubleshooting process
* keeping spare switches, routers, and other equipment available
* keeping a record of system upgrades and software versions

17. Refer to the graphic. What configuration is incorrect in the network shown?

* The Linksys integrated router does not support wireless.
* The host IP address is incorrect.
* The host subnet mask is incorrect.
* The host default gateway is incorrect.
* The wired connection is the wrong type of cable.

18. 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 both devices have the same IP address.
* Ensure the correct cable is used.
* Ensure the SSID is the same on both devices.
* Ensure both devices have different subnet masks.
* Ensure the encryption type on both devices match.
* Ensure the link status LED on the integrated router is lit.

19. What two items could be checked to verify connectivity between the router and the ISP? (Choose two.)
* router status page
* wireless card settings
* local host operating system version
* connectivity status as indicated by LEDs
* router operating system version

20. Network baselines should be performed in which two situations? (Choose two.)
* after the network is installed and running optimally
* after a virus outbreak is discovered on the network
* after several computers are added to the network
* at the end of the work week
* after major changes are implemented on the network

21. Typically, help desk personnel assist end users in which two tasks? (Choose two.)
* identifying when the problem occurred
* running a network baseline test
* determining the cost of fixing the problem
* determining if other users are currently logged into the computer
* updating network diagrams and documentation
* implementing the solution to the problem

22. Which two items should be added to the documentation following a troubleshooting event? (Choose two.)
* final resolution
* repetitive measures
* results of successful and unsuccessful troubleshooting steps
* number of people involved in the problem
* accurate current network infrastructure diagrams

23. How does remote-access software help in the troubleshooting process?
* Diagnostics can be run without a technician being present at the site.
* Remote access uses a live chat feature.
* Users have to be present so that they can view LEDs and change cables if necessary.
* FAQs can be consulted more easily.

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1. What two events will cause a link state router to send LSPs to all neighbors? (Choose two.)
• whenever the network topology changes
• upon initial startup of router or routing protocol

2. Refer to the exhibit. When RouterD is configured to use a link-state routing protocol and is added to the network, what is the first thing that it does to begin learning the network topology?
• It learns about its directly connected networks when its interfaces reach the up state.

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3. What two statements correctlydescribe the link state routing process? (Choose two.)
• each router in the area floods LSPs to all neighborsall routers in the area have identical link state databases.

4. What is the final step in the link state routing process?
• SPF computes best path to each destination network

5. Refer to the exhibit. What kind of information would be seen in an LSP sent from router JAX to router ATL?
• cost of the link

6. What feature do modern link-state protocols provide to minimize processing and memory requirements?
• splitting routing topologies into smaller areas

7. To achieve network convergence, what three steps does each link state router take? (Choose three.)
• build a Link State Packet (LSP) containing the state of each directly connected link.
• flood the LSP to all neighbors, who then store all LSPs received in a database.
• construct a complete map of the topology and compute the best path to each destination network.

8. What speeds up convergence in a network using link-state routing?
• updates triggered by network changes

9. Why is it difficult for routing loops to occur in networks that use link-state routing?
• Each router builds a complete and synchronized view of the network.

10. What are some of the advantages of using a link-state routing protocol instead of a distance vector routing protocol? (Choose two.)
• Routers have direct knowledge of all links in the network and how they are connected.
• After the inital LSA flooding, they generally require less bandwidth to communicate changes in a topology.

11. Which algorithm is run by link-state routing protocols to calculate the shortest path to destination networks?
• Dijkstra

12. Refer to the exhibit. Which statement correctly describes the path traffic would take from the 10.0.0.0/24 network to the 192.168.1.0/24 network if a link-state routing protocol was in use?
• BOS -> ORL -> JAX -> ATL because this path is the lowest cost

13. Which database or table must be identical on all link-state routers within an area in order to construct an accurate SPF tree?
• link-state database

14. When are link-state packets sent to neighbors?
• when a link goes up or down

15. Which two routing protocols use Dijkstra’s shortest path first algorithm? (Choose two.)
• IS-IS
• OSPF

16. Refer to the exhibit. What does JAX do with link-state packets from ORL?
• sends out the individual link-state packets out the interface connected to BOS

17. A new network administrator is given the task of selecting an appropriate dynamic routing protocol for a software development company. The company has over 100 routers, uses CIDR and VLSM, requires fast convergence, and uses both Cisco and non-Cisco equipment. Which routing protocol is appropriate for this company?
• OSPF

18. What action does a link-state router take immediately upon receipt of an LSP from a neighboring router?
• floods the LSP to neighbors

19. Refer to the exhibit. If all routers and interfaces are configured to use a link-state routing protocol, from which routers will router D receive hello packets?
• B and C