ActualTests.Cisco.640-802.Exam.Q.and.A.08.15.08-DDU (1130589), страница 17
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Given the information shown below and assuming that the router andSwitch2 are configured properly, which of the following commands should be issuedon Switch CK1 to correct this problem?Exhibit:A. Switch CK1 (config)# ip default-gateway 192.168.24.1B. Switch CK1 (config)# interface fa0/1Switch CK1 (config-if)# ip address 192.168.24.3 255.255.255.0C. Switch CK1 (config)# line con0Switch CK1 (config-line)# password ciscoSwitch CK1 (config-line)#loginD. Switch CK1 (config)# interface fa0/1Switch CK1 (config-if)# duplex fullSwitch CK1 (config-if)# speed 100E. Switch CK1 (config)# interface fa0/1Switch CK1 (config-if)# switchport mode trunkF.
None of the aboveAnswer: AExplanation:To route traffic to other vlans, we need to enter the IP address of the next-hop routerinterface that is directly connected to the switch where a default gateway is beingconfigured. The default gateway receives IP packets with unresolved destination IPaddresses from the switch.Once the default gateway is configured, the switch will have connectivity to the remotenetworks with which a host needs to communicate.QUESTION 142:Exhibit:Actualtests.com - The Power of Knowing640-802In the Certkiller network segment shown above, host Certkiller A must be able totelnet to switch Certkiller 1 through router Certkiller 2 for management purposes.What must be configured or done for this connection to be successful?A. VLAN 1 on Certkiller 1B.
A default gateway on Certkiller 1C. A cross-over cable connecting Certkiller 1 and Certkiller 2D. IP routing on Certkiller 1E. None of the aboveAnswer: BExplanation:In order for a switch to send traffic to a destination that is not located directly, as is thecase in our example, a default gateway must be configured on the switch. This willenable it to send the traffic to router Certkiller 2 where it can be routed to host Certkiller A.Incorrect Answers:A: This is the default VLAN used and does not need to be configured.C: A cross over cable is used to connect two switches or two routers together back toback, but a straight through cable should be used when connecting a switch to a routers.D: IP routing does not need to be enabled, just the default gateway.QUESTION 143:Network topology exhibit:Output exhibit:Actualtests.com - The Power of Knowing640-802You work as a network technician at Certkiller and you issued the arp -a commandfrom a host named Certkiller A as shown above.The user of host Certkiller A wants to ping the DSL modem/router at 192.168.1.254.Based on the Host Certkiller A ARP table that is shown in the exhibit, what will hostCertkiller A do?A.
Send a unicast ARP packet to the DSL modem/routerB. Send a Layer 2 broadcast that is received by Host Certkiller B, the switch and the DSLmodem/routerC. Send unicast ICMP packets to the DSL modem/routerD. Send Layer 3 broadcast packets to which the DSL modem/router respondsE. None of the aboveAnswer: CQUESTION 144:While troubleshooting a connectivity problem, the Certkiller network administratornotices that a port status LED on a Cisco Catalyst Series switch is alternatingbetween green and amber. Which condition could this indicate?A. The port is experiencing errorsB. The port has ac active link with normal traffic activityC. The port blocked by spanning treeD.
The port is administratively disabledE. None of the aboveAnswer: AActualtests.com - The Power of Knowing640-802Explanation: Here are some Port status LEDsQUESTION 145:Two Certkiller hosts are connected as shown below:Ping Exhibit:Actualtests.com - The Power of Knowing640-802In the network shown above, a network administrator attempts to ping HostCertkiller II from Host Certkiller I and receives the results that are shown. What is apossible problem?A.
TCP/IP is not functioning on Host Certkiller IB. The default gateway on Host Certkiller I is incorrectC. The link between Router Certkiller 1 and Router Certkiller 2 is downD. The link between Host Certkiller I and Switch Certkiller A is downE. Interface Fa0/0 on Router Certkiller 1 is downF. The link between Switch Certkiller A and Router Certkiller 1 is downG. None of the aboveAnswer: CExplanation:Destination Unreachable: If a router can't send an IP datagram any further, it uses ICMPto send a message back to the sender, advising it of the situation.QUESTION 146:Two Certkiller switches are connected together as shown below:The interface status of Certkiller A is shown below:The Certkiller network administrator has verified that a functioning cable connectsSwitch Certkiller 1 and Switch Certkiller 2 shown above.
From the output that isshown above, what two pieces of information below are true? (Choose two)A. Using a source MAC address of 0009.11f3.8848, Switch Certkiller 2 is sending framesActualtests.com - The Power of Knowing640-802to Switch Certkiller 1B. The status of fa0/2 should be checked on Switch Certkiller 2C. The interface is functional at OSI layer 1D. There is likely to be an IP address issue on Switch Certkiller 1 Fa0/1E. Interface fa0/1 on Switch Certkiller 1 is in a shutdown stateF. Switch Certkiller B is not powered onAnswer: B, CQUESTION 147:Two Certkiller routers are connected as shown below:After configuring the routers shown in the graphic, the technician decides to testand document the network. Pings from the technician's laptop to all of theinterfaces on each router were successful.
If a technician initiates a Telnet session toCertkiller 1 and issues the "show arp" command, which of the following items will beamong the entries displayed in the output?A. The MAC address of the S0 interface on Certkiller 1B. The MAC address of the E0 interface on Certkiller 1C. The MAC address of the S0 interface on Certkiller 2D. The MAC address of the E0 interface on Certkiller 2E. None of the aboveAnswer: BExplanation:To display the Address Resolution Protocol (ARP) cache, enter the show arp command inEXEC mode. ARP establishes correspondences between network addresses (an IPaddress, for example) and Ethernet hardware addresses.
A record of each correspondenceis kept in a cache for a predetermined amount of time and then discarded. Serialinterfaces will not appear, only the local Ethernet interfaces on the router.QUESTION 148:Actualtests.com - The Power of Knowing640-802You are the administrator of the Certkiller LAN and you have been reviewing errorlogs of networking devices and notice a large number of errors associated withseveral MAC addresses.
You suspect that some of the errors are being generated bythe routers. Which router commands will allow you to find the ip address associatedwith each MAC address? (Choose two)A. show arpB. show versionC. show addressD. show hostsE. show interfaceF. show protocolsAnswer: A, EExplanation:The "show arp" command Displays the entries in the ARP table, including their layer 2MAC address and layer 3 IP address.Example:The following is the output for the show arp command on Router 1:CK1 # show arpProtocol Address Age (min) Hardware Addr Type InterfaceInternet 10.0.0.3 0 0004.dd0c.ffcb ARPA Ethernet01Internet 10.0.0.1 - 0004.dd0c.ff86 ARPA Ethernet0To see the MAC (hardware) address of the router interfaces as well as their IP addresses,use the "show interfaces" command as shown in the example below:CK1 # show interfacesEthernet 0 is up, line protocol is upHardware is MCI Ethernet, address is 0000.0c00.750c (bia 0000.0c00.750c)Internet address is 10.108.28.8, subnet mask is 255.255.255.0MTU 1500 bytes, BW 10000 Kbit, DLY 100000 usec, rely 255/255, load 1/255QUESTION 149:The Certkiller network administrator issues the ping 192.168.2.5 command andsuccessfully tests connectivity to a host that has been newly connected to thenetwork.
Which protocols were used during the test? (Choose two)A. ARPB. CDPC. DHCPD. DNSE. ICMPActualtests.com - The Power of Knowing640-802Answer: A, EExplanation:ARP finds the hardware address of a host from a known IP address. Here's how it works:when IP has a datagram to send, it must inform a Network Access protocol, such asEthernet or Token Ring, of the destination's hardware address on the local network.
(Ithas already been informed by upper-layer protocols of the destination's IP address.) If IPdoesn't find the destination host's hardware address in the ARP cache, it uses ARP to findthis information.ICMP works at the Network layer and is used by IP for many different services. ICMP isa management protocol and messaging service provider for IP. Its messages are carried asIP datagrams. RFC 1256 is an annex to ICMP, which affords hosts' extended capability indiscovering routes to gateways. Periodically, router advertisements are announced overthe network, reporting IP addresses for the router's network interfaces.
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