ActualTests.Cisco.640-802.Exam.Q.and.A.08.15.08-DDU (1130589), страница 48
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It is a route to be used when the routing protocol fails.B. It is a route configured by an ISP that sends traffic into a corporate network.C. It is a route used when a packet is destined for a remote network that is not listed inthe routing table.D. It is a route manually configured for a specific remote network for which a routingActualtests.com - The Power of Knowing640-802protocol is not configured.E.
It is used to send traffic to a stub network.F. None of the aboveAnswer: CExplanation:Every IP host needs to have a default route either manually configured or dynamicallylearned. Default routes provide end hosts a way out of their local subnet and routers witha router of last resort if no other route (specifically relating to the destination) exists inthe routers route table.Routers use default routing as a last resort when all other methods (directly connected,static, or dynamic) have been exhausted. Routers inspect received datagrams to identifythe logical Network layer address of the ultimate destination. If a directly connectedstatic or dynamic route exists within the router's route table, it forwards the datagram.If the destination remains unknown, that is, no method of routing has resulted in alearned route; it forces the router to use a default route.
Typically, administratorsimplement default routes on point-to-point (a link with only two routers) or dial-upconnections, linking Certkiller .com's network to the outside work.Reference: http://www.informit.com/articles/article.asp?p=26129&seqNum=4&rl=1QUESTION 423:On router CK1 the following configuration command was entered:ip route 0.0.0.0 0.0.0.0 192.168.1.2What is the result of adding this command to this router when it is alreadyconfigured for dynamic routing?A. It configures the router to block routing updates from being sent to IP address192.168.1.2.B. It configures the router to send all packets to IP address 192.168.1.2 if the packetsmatch no other entry in the routing table.C.
It configures the router to drop all packets for which the destination network isunknown.D. It configures the router to send all packets to IP address 192.168.1.2.E. It configures the router as a firewall, blocking all packets from IP address 192.168.1.2.F. None of the aboveAnswer: BExplanation:There is a special kind of static route called a default route, which is what this example isshowing.
Sometimes a default route is called a "zero / zero" route. This is because thenetwork and subnet you are specifying, as the destination for the traffic it would match,are all zeros. A default route says "for any traffic that does not match a specific route inActualtests.com - The Power of Knowing640-802the routing table, send that traffic to this destination". In other words, a default route is a"catch-all".QUESTION 424:If NVRAM in a Certkiller router lacks boot system commands, where does thisrouter look for the Cisco IOS by default?A.
ROMB. RAMC. FlashD. BootstrapE. Startup-.configF. None of the aboveAnswer: CExplanation:Flash memory - Either an EEPROM or a PCMCIA card, Flash memory stores fullyfunctional IOS images and is the default location where the router gets its IOS at boottime. Flash memory also can be used to store any other files, including configurationfiles.Reference:CCNA Self-Study CCNA INTRO exam certification Guide (Cisco Press, ISBN1-58720-094-5) page 187QUESTION 425:When you power up a Certkiller router; in what memory is the start-upconfiguration normally stored in?A.
RAMB. ROMC. FLASHD. NVRAME. None of the aboveAnswer: DExplanation:The startup configuration is stored in the Non-Volatile RAM.Incorrect Answers:A, B: No configuration information is stored in RAM or ROM.C. The IOS is normally stored in the flash memory, not the saved configuration.Actualtests.com - The Power of Knowing640-802QUESTION 426:You are the administrator of the Certkiller network and you have forgotten thepassword to one of your routers. After completing the password recovery procedurethe router returned to its normal operation.
The config-register was set back to theinitial default value. What is this value?A. 0x2112B. 0x2104C. 0x2102D. 0x2142E. 0x2100Answer: CExplanation:The config-register's default factory setting is 0x2102. The following display the possibleconfiguration register values and their meanings:Actualtests.com - The Power of Knowing640-802Actualtests.com - The Power of Knowing640-802Incorrect Answers:D. This is the setting that would be used during the password recovery procedure.Reference:http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a008022493f.shtmlQUESTION 427:You issued the following command on router Certkiller 3:When upgrading the IOS image, you receive the exhibited error message shownabove.
Based on the information given, what could be the cause of this error?A. The TFTP server is unreachable from the router.B. The new IOS image is too large for the router flash memory.C. The IOS image on the TFTP server is corrupt.D. The new IOS image is not correct for this router platform.E. There is not enough disk space on the TFTP server for the IOS image.F. None of the aboveAnswer: AExplanation:Actualtests.com - The Power of Knowing640-802The problem shown here is that the destination file is not reachable.
When copying filesvia TFTP the first step is to ensure that there is connectivity to the TFTP server. Youshould perform the following steps:1. Verify that the TFTP server has IP connectivity to the router.2. Check the IP addresses of the TFTP server and the router or access server targeted forthe TFTP software upgrade.3. Ping the router or access server to verify that a network connection exists betweenthem.QUESTION 428:The relevant system information regarding a Certkiller router is shown in thefollowing display:Refer to the partial Command output shown.
Which two statements are correctregarding the router hardware? (Choose Two)A. Total RAM Size is 32 KB.B. Total RAM Size is 16384 KB (16 MB)C. Total RAM Size is 65536 KB (64 MB)D. FLASH Size is 32 KB.E. FLASH Size is 16384 KB (16 MB)F. FLASH Size is 65536 KB (64 MB)Answer: C, EExplanation:The RAM is found by adding up the memory, so in this case it is 53248K+12288K =65536K. The Flash is found at the very bottom of the output, which is shown as 16384KHow Do I Know What Platform I Have?Actualtests.com - The Power of Knowing640-802Type the show version command at the enable command prompt of the router to see theplatform, RAM, flash memory, and current version of code you are running.This example shows a Cisco 2600 router with 48 MB of RAM (43617 K + 5534 K), 16MB of flash memory (16384 K), and a code image called flash:c2600-jk8s-mz.122-6.bin.Reference:http://www.cisco.com/en/US/products/sw/secursw/ps1018/products_tech_note09186a00800949e4.shtmlQUESTION 429:Which is the correct fallback sequence for loading the Cisco IOS?A.
ROM, Flash, NVRAMB. ROM, TFTP server, FlashC. Flash, TFTP server, ROMD. Flash, NVRAM, RAMAnswer: CExplanation:By default, a Cisco IOS router will normally boot up from flash where the IOS is stored.If the IOS in not found or has become corrupted, the router will then send an all hostsbroadcast (255.255.255.255) to find a TFTP server to download the IOS from. Shouldthat fail, the router will boot up in ROM Monitor mode as a last resort.Actualtests.com - The Power of Knowing640-802QUESTION 430:See the following exhibit below:A router consistently loses its configuration each time it reboots. Given the outputshown in the graphic, what is the cause of this problem?A.
The processor is overheating.B. Configuration register is misconfigured.C. There is no problem.D. Cisco products are inferior compared to Nortel products. Migrate to Nortel instead.E. None of the aboveAnswer: BExplanation:The value of the register 0x2142 means that the router should omit the startupconfiguration when it loads. To solve this problem change the value of the register to0x2102QUESTION 431:A Cisco router has been configured, and the copy running-config startup-configcommand has been issued.
When the router is power cycled, the router promptswith:"Would you like to enter the initial configuration dialog? [yes/no]"Why has this occurred?Actualtests.com - The Power of Knowing640-802A. There is an error in the router DRAM.B. Te IOS image is corrupt.C. The configuration register is set to 0x2142.D. The TFTP server that contains the router configuration file is unreachable.E. A boot system configuration command has placed the router into setup mode.Answer: CExplanation:When the configuration setting is set to 0x2142, the router will ignore the contents of theNVRAM information. More specifically, this setting will:1.
Ignores break2. Boots into ROM if initial boot fails3. 9600 console baud rate4. Ignores the contents of Non-Volatile RAM (NVRAM) (ignores configuration)QUESTION 432:What is the purpose of using the copy flash tftp command on a router?A. To copy an IOS image to the routerB. To create a backup copy of the IOSC. To move the IOS image from a server to the routerD. To backup the router configuration to a serverAnswer: BExplanation:When upgrading the IOS on a router, if there is enough space to copy the system imagefile, then the original one can be retained and the new file can be copied in the additionalmemory space.
If there is not enough space available, as in this case, then the existing filefrom the Flash is erased while downloading a new one. It is a good practice to backup theexisting system image to the TFTP server using the "copy flash tftp" command.Reference: http://www.cisco.com/warp/public/63/copyimage.htmlQUESTION 433:Refer to the following exhibit:Actualtests.com - The Power of Knowing640-802The Certkiller network administrator configures a new router and enters the copystartup-config running-config command on the router. He powers down the routerand sets it up at a remote location. When the router starts, it enters the systemconfiguration dialog as shown. What is the cause of the problem?A. The network administrator failed to save the configuration.B.
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