Testking_640-802_V13

B. Gateway(config)# router rip

Gateway(config-router)# network 207.134.6.0 default

C.Gateway(config)# ip route 207.134.6.0 255.255.255.0 Serial0/0

D.Gateway(config)# router OSPF

Gateway(config-router)# network 207.134.6.0

E. Gateway(config)# ip default-network 207.134.6.0

Answer: A, E

Explanation:

This question only involves the configuration of the gateway router to the ISP, nothing else. You have two choices to accomplish this: the command "ip route" or the command "ip default-network". Both of these methods will configure a default route to the ISP as desired.

Incorrect Answers:

B, D: RIP and OSPF are interior routing protocols. The T1 Internet connection that is being set up here is between two different Autonomous Systems. The only routing protocol that could be potentially used is BGP, but that is not an option.

C: This command will only set up a static route to the 207.134.6.0/24 network. We wish to set up a static default route.

QUESTION NO: 5

Router TestKing2 is connected to an ISP as shown below:

In the ISP link to the WAN shown above, you must complete the connection between the TestKing2 router to the service provider. To accomplish this task, which two devices could be installed at the TestKing site to provide a connection through the local loop to the CO of the provider? (Choose two)

A.Multiplexer

B.WAN switch

C.ATM switch

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D.CSU/DSU

E.PVC

F.Modem

G.LMI

Answer: D, F

Section 10: Identify and correct common network problems at layers 1, 2, 3 and 7 using a layered model approach (8 questions)

QUESTION NO: 1

Part of the TestKing network is shown below:

Study the exhibit shown above. A problem with network connectivity has been observed. It is suspected that the cable connected to switch port Fa0/9 on Switch TestKing1 is disconnected. What would be an effect of this cable being disconnected?

A. Communication between VLAN3 and the other VLANs would be disabled

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B.Host TestKingB would not be able to access the server in VLAN9 until the cable is reconnected

C.For less than a minute, Host TestKingB would not be able to access the server in VLAN9. Then normal network function would resume

D.The transfer of files from Host TestKingB to the server in VLAN9 would be significantly slower

E.None of the above

Answer: C Explanation:

Spanning-Tree Protocol (STP) is a Layer 2 protocol that utilizes a special-purpose algorithm to discover physical loops in a network and effect a logical loop-free topology. STP creates a loop-free tree structure consisting of leaves and branches that span the entire Layer 2 network. The actual mechanics of how bridges communicate and how the STP algorithm works will be discussed at length in the following topics. Note that the terms bridge and switch are used interchangeably when discussing STP. In addition, unless otherwise indicated, connections between switches are assumed to be trunks.

STP keeps the port either in block or in forward states, when forward port disconnect then within the less then a minute blocked port comes into forward state so packets starts to go through new forward port.

The Spanning Tree Protocol (STP) would identify the best path as well as alternate path to reach in proper destination. In a redundant link, if the primary link fails then the secondary links will automatically start after few minutes. If port Fa0/9 became disconnected, then the packets would be re-routed automatically using the TestkingA-Testking2-TestKing3 path.

QUESTION NO: 2

You are logged into a router and wish to view the layer 3 information about your neighboring Cisco routers. What IOS command gives layer 3 information for of the directly connected router interfaces?

A.show ip links

B.show cdp neighbor

C.show cdp neighbor detail

D.show ip clients

E.show ip route

F.None of the above

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Answer: C Explanation:

To display detailed information about neighboring devices discovered using Cisco Discovery Protocol (CDP), use the show cdp neighbors privileged EXEC command. Detail - (Optional) Displays detailed information about a neighbor (or neighbors) including network address, enabled protocols, hold time, and software version.

Incorrect Answers:

A, D. These are invalid commands.

B. The "show cdp neighbor" command, without the "detail" keyword will not display the additional layer 3 protocol information.

E. This will show all routes from all other routers within the domain. We wish to see information from just the direct interface neighbors.

QUESTION NO: 3

A TestKing technician is troubleshooting connectivity problems between two routers that are directly connected through the serial line. The technician notices that the serial line is up but cannot see any neighbors displayed in the output of the show cdp neighbors command.

In which OSI layer is the problem most likely occurring?

A.Physical

B.Data link

C.Network layer

D.Transport layer

E.Application layer

Answer: B Explanation:

As the question states that serial line is up, it means the problem is not on the Network layer. The administrator cannot see any output by issuing the show cdp neighbors command. It means that CDP is disabled and CDP is a protocol that runs over Layer2 (the data link layer) on all Cisco routers, bridges, access servers, and switches.

QUESTION NO: 4

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While troubleshooting a network connectivity problem, a TestKing technician observes steady link lights on both the workstation NIC and the switch port to which the workstation is connected. However, when the ping command is issued from the workstation, the output message "Request timed out." is displayed. At which layer of the 7-layer OSI model does the problem most likely exist?

A.The data link layer

B.The application layer

C.The protocol layer

D.The access layer

E.The session layer

F.The network layer

G.None of the above

Answer: F

QUESTION NO: 5

A host is connected to the TestKing network as displayed below:

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The two connected ports on the switch are not turning orange or green. What would be the most effective steps to troubleshoot this physical layer problem? (Choose three)

A.Ensure that the Ethernet encapsulations match on the interconnected router and switch ports.

B.Ensure that cables A and B are straight-through cables.

C.Ensure cable A is plugged into a trunk port.

D.Ensure that switch has power.

E.Reboot all of the devices.

F.Reseat all cables.

Answer: B, D, F Explanation:

Straight-through cables are used to connect hosts to a switch (or hub) and routers to a switch (or hub). See the table below:

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Incorrect Answers:

A: This would mean that there was a layer 2 issue, not layer 1. If the problem was related to the encapsulation, the lights on the switch would indicate layer 1 activity.

C: A trunk port is not required, and again if this was the problem the link lights on the switch would be on.

E: This should only be used as a last resort, as this will affect all users on the switch.

QUESTION NO: 6

Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?

A.Serial0/1 is up, line protocol is down

B.Serial0/1 is down, line protocol is down

C.Serial0/1 is up, line protocol is up

D.Serial0/1 is administratively down, line protocol is down

E.None of the above

Answer: B Explanation:

When the physical interface itself is down, then the problem is related to layer 1. When it is up, but the line protocol is down, then the problem is related to layer 2.

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Reference: http://www.cisco.com/univercd/cc/td/doc/cisintwk/itg_v1/tr1915.htm

QUESTION NO: 7

At which layer of the OSI model does the protocol that provides the information displayed by the "show cdp neighbors" command operate?

A.Transport

B.Physical

C.Application

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D.Data link

E.Network

Answer: D Explanation:

CDP is a device discovery protocol that runs over Layer 2 (the data link layer) on all Cisco-manufactured devices (routers, bridges, access servers, and switches) and allows network management applications to discover Cisco devices that are neighbors of already known devices. With CDP, network management applications can learn the device type and the Simple Network Management Protocol (SNMP) agent address of neighboring devices running lower-layer, transparent protocols.

QUESTION NO: 8

Which three of the protocols below belong to the application layer? (Select three answer choices)

A.ARP

B.HTTPS

C.SMTP

D.CDP

E.TFTP

F.ICMP

Answer: B, C, E Explanation:

The application layer is the highest OSI layer, and protocols at this layer are end-user oriented. HTTPS so people can get information on the internet, SMTP so people can manage networks, and TFTP so people can download files.

Incorrect Answers:

A, D, F. ARP, CDP, ICMP are protocols that equipment like routers and switches use to communicate with themselves, and belong to lower levels on the model.

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Section 11: Differentiate between LAN/WAN operation and features (4 questions)

QUESTION NO: 1

You want to upgrade the TestKing LAN so that all ports operate in full duplex mode. Which statement is true about full-duplex Ethernet when comparing to half-duplex Ethernet?

A.Full-duplex Ethernet consists of a shared cable segment. Half-duplex provides a point-to-point link

B.Full-duplex Ethernet uses two wires to send and receive. Half-duplex Ethernet uses one wire to send and receive

C.Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth

D.Full-duplex Ethernet uses a loopback circuit to detect collisions. Half-duplex Ethernet uses a jam signal

E.None of the above

Answer: C

QUESTION NO: 2

What are two characteristics of "store and forward" switching? (Select two answer choices)

A.Latency fluctuates regardless of frame size.

B.The switch receives the complete frame before beginning to forward it.

C.Latency through the switch varies with frame length.

D.The switch checks the destination address upon receipt of headers.

Answer: B, C

Explanation:

With store-and-forward, the entire frame is received by the switch before the first bit of the frame is forwarded.

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