ActualTests.Cisco.640-802.Exam.Q.and.A.08.15.08-DDU (1130589), страница 25
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The router checks the routingtable, determines the correct outgoing interface, and forwards the packet out theVLAN20 interface to SwitchB. SwitchB receives the packet and forwards it to HostC.Reference:http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/rel_5_2/layer3/routing.htm#wp13354QUESTION 202:The Certkiller network is displayed below:Study the exhibit: the topology and the partial switch command output.The internetwork shown in the exhibit is experiencing connectivity problems. HostCertkiller 1 is unable to ping Host Certkiller 2.What needs to be done to enable these hosts to ping each other?A.
The gateway on Host Certkiller 1 needs to be changed.B. The IP address on Host Certkiller 2 needs to be reconfigured.C. VLAN2 must be named.D. The Fa0/1 interface on the Certkiller A switch must be configured as a trunk port.E. Switch port Fa0/1 must be moved to a different VLAN.Answer: DExplanation:Interface FA0/1 should be in any case configured as a trunk port so that a router couldswitch packets between the VLANs. The IP addresses are acceptable, so no issues shouldbe caused due this.Actualtests.com - The Power of Knowing640-802QUESTION 203:A Certkiller network is displayed below:Host Certkiller B in the diagram is experiencing connectivity problems. FurtherTesting reveals that it cannot ping the default gateway.
Based on the informationshown in the exhibit, what is the problem?A. The IP address of Certkiller B is on a different subnet than the default gateway.B. The Fa0/1 interface on the switch is administratively shutdown.C. The switch is connected to the wrong interface on the Certkiller 1 router.D.
The FastEthernet interface on the Certkiller router is not configured for trunking.E. The Fastethernet 0/0.2 interface on the Certkiller 1 router is configured for the wrongVLAN.F. The FastEthernet interface of the Certkiller 1 router is configured with the wrongEthernet encapsulation.Answer: EExplanation:Based on the output shown above, the Fa 0/0.2 interface should be in VLAN 32, which isthe same VLAN that other devices in the 192.168.2.X/24 subnet belong to. InterfaceFA0/0.1 should be configured for VLAN 22, while FA0/0/2 should be configured forVLAN 32.QUESTION 204:A Certkiller switch is connected as shown below:Actualtests.com - The Power of Knowing640-802In the network above Host 1 cannot ping Host 2.
What needs to be configured toallow host 1 and host 2 to communicate?A. The switch needs to be configured with an IP address on the correct subnet.B. The default gateway of the hosts should be configured to 192.168.1.2.C. Spanning Tree Protocol needs to be configured on the switch.D. A router needs to be configured to route between the VLANs.E. VTP needs to be configured on the switch to create a trunk between the VLANs.Answer: DExplanation:By default only members of the same VLAN can communicate with each other.
Forinter-VLAN communication we require a router to route between the different VLANs.Alternatively, if Host1 and Host2 were in the same subnet and the same VLAN, then theywould also be able to communicate.QUESTION 205:The Certkiller network is shown below:Actualtests.com - The Power of Knowing640-802The network administrator normally establishes a Telnet session with the switchfrom hostA. However, host A is unavailable. The administrator's attempt to telnetto the switch from host B fails, but pings to the other two hosts are successful. Whatis most likely the issue?A. Host B and the switch need to be in the same subnet.B.
The switch interface connected to the router is down.C. Host B needs to be assigned an IP address in VLAN 1.D. The switch needs an appropriate default gateway assigned.E. The switch interfaces need the appropriate IP addresses assigned.Answer: DExplanation:This scenario requires inter-VLAN routing, which requires a layer three device. Based onthe information above, a trunk has indeed been set up to route traffic between VLAN's sothe only logical explanation why a host in VLAN 32 can not reach a host in VLAN1(which is where the IP address of the switch is) would be because no default gateway hasbeen specified in the switch.Incorrect Answers:A, C: This is not a requirement, as a number of VLAN's can be configured within aswitch, while the management IP address can reside in a different VLAN on a differentsubnet.B: Based on the output above, the trunk link (fa 0/3) is indeed up and active.E: Since switches operate at layer 2, each individual VLAN does not need its own IPaddress.QUESTION 206:A portion of the Certkiller network is shown in the following exhibit:Based on this diagram, which of the following is true?A.
Switch CK2 is the root bridge.Actualtests.com - The Power of Knowing640-802B. Spanning Tree is not running.C. Host D and Server 1 are in the same network.D. No collisions can occur in traffic between Host B and Host C.E. If Fa0/0 is down on Router 1, Host A cannot access Server 1.F. If Fa0/1 is down on Switch 3, Host C cannot access Server 2.G. None of the aboveAnswer: EExplanation:A VLAN is a group of hosts with a common set of requirements that communicate as ifthey were attached to the same wire, regardless of their physical location.
A VLAN hasthe same attributes as a physical LAN, but it allows for end stations to be groupedtogether even if they are not located on the same LAN segment.The above diagram is configured with inter-VLAN communication so the router has agreat role to make communication between different VLAN. When router's portconfigured with trunk goes down all host can't communicate with other host in differentVLAN as it is the router that directs traffic between the separate VLANs.QUESTION 207:The corporate LAN shown in the Certkiller network uses IP network 172.28.4.0/22for all departments. All workstations use 172.28.4.1 as a default gateway address.In this network, administrators have recently become concerned that excessivebroadcasts are slowing network performance. Which change is most likely to reducebroadcast traffic on the corporate LAN?A.
Configure an access control list on the router to prevent broadcast forwarding.B. Configure each NIC and switch port to operate at full duplex.C. Change the router-to-switch connection from Fast Ethernet to Gigabit Ethernet.D. Implement VLANs after creating IP subnets for each department.Actualtests.com - The Power of Knowing640-802E.
Increase the number of switches in the network closet of each department.Answer: DExplanation:Switches using VLANs create the same division of the network into separate broadcastdomains but do not have the latency problems of a router. Switches are also a morecost-effective solution.There are several benefits to using VLANs, including:1. Increased performance2. Improved manageability3. Network tuning and simplification of software configurations4. Physical topology independence5.
Increased security optionsIncreased performanceSwitched networks by nature will increase performance over shared media devices in usetoday, primarily by reducing the size of collision domains. Grouping users into logicalnetworks will also increase performance by limiting broadcast traffic to users performingsimilar functions or within individual workgroups.
Additionally, less traffic will need tobe routed, and the latency added by routers will be reduced.QUESTION 208:The Certkiller LAN is displayed below:A technician is investigating a problem with the exhibited network. These symptomshave been observed:1. None of the user hosts can access the Internet.2. None of the user hosts can access the server in VLAN 9.3.
Host A can ping Host B.4. Host A CANNOT ping Host C or Host D.5. Host C can ping Host D.What could cause these symptoms?A. Interface S0/0 on the router is down.B. Interface Fa1/0 on the router is down.Actualtests.com - The Power of Knowing640-802C. Interface Fa0/5 on Certkiller 3 is down.D. Certkiller 1 is turned off.E. Certkiller 3 is turned off.Answer: BExplanation:Choice B is correct because a Router is used for communication between differentVLANs and it is stated that none of the hosts can access the server in VLAN 9 it meansthat there is no connection of the network with router so FA1/0 is down. In this example,connectivity problems only occur with inter-VLAN communication, which means theproblem is with the routing element.Incorrect Answers:A.
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