ActualTests.Cisco.640-802.Exam.Q.and.A.08.15.08-DDU (1130589), страница 40
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Identify the four valid IPv6addresses below that could be used in this network. (Choose four)A. ::192:168:0:1B. 2002:c0a8:101::42C. 2000::D. ::E. 2001:3452:4952:2837::F. 2003:dead:beef:4dad:23:46:bb:101Answer: A, B, D, FExplanation:From RFC 1884: IP VersiActualtests.com - The Power of Knowing640-802After the router interfaces shown in the diagram have been configured, it isdiscovered that hosts in the Certkiller 1 LAN cannot access the Internet.
Furthertesting reveals additional connectivity issues. What will fix this problem?A. Change the subnet mask of the Certkiller 2 router LAN interface.B. Change the address of the Certkiller 1router WAN interface.C. Change the address of the Certkiller 2 router interface to the Internet.D. Change the address of the Certkiller 1 router LAN interface.E. Change the address of the Certkiller 2 router LAN interface.F.
Change the subnet mask of the Certkiller 2 router interface to the Internet.G. None of the aboveAnswer: BExplanation:In order for two routers to be able to send and receive traffic across a point to point seriallink, the IP addresses of the two serial interfaces across this link needs to be in the sameIP subnet. Since we are using a /30 in this case, only 2 valid IP addresses are usable butas we can see in this example the 192.168.10.82/30 and 192.168.10.85/30 IP addressesreside in two different subnets.QUESTION 344:Exhibit:You work as a network technician at a Certkiller office.
After configuring twointerfaces on the Certkiller 3 router as shown, you notice an error message. Whatshould be done to fix this error?A. The subnet mask of the serial interface on Certkiller 3 should be changed to255.255.255.0.Actualtests.com - The Power of Knowing640-802B. The subnet mask of the FastEthernet interface on Certkiller 3 should be changed to255.255.255.240.C. The serial interface must be configured first.D.
The serial interface must use the address 192.168.1.2.E. The address of the FastEthernet interface should be changed to 192.168.1.66.Answer: BExplanation:Cisco routers will not allow you to configure two interfaces that belong to the same IPsubnet. In this case, by giving the serial 0/0 interface an IP address of 192.168.1.65, itwould belong to this /28 subnet but it would also belong to the 192.168.1.17/24 subnet.You need to ensure that two interfaces are given IP addresses and subnet masks so thatthey belong to different subnets, and given the options only the option of changing themask of the FE interface to an /28 will accomplish this.QUESTION 345:Exhibit:The junior network support staff at Certkiller provided the diagram as arecommended configuration for the first phase of a four-phase network expansionproject. The entire network expansion will have over 1000 users on 14 networksegments and has been allocated this IP address space:192.168.1.1 through 192.168.5.255192.168.100.1 through 198.168.100.255There are three problems with this IP addressing design.
What are they? (Choosethree)A. The broadcast domain in AREA 1 is too large for IP to function.B. The AREA 3 IP address space is inadequate for the number of users.C. AREA 2 could use a mask of /25 to conserve IP address space.D. The router-to-router connection is wasting address space.Actualtests.com - The Power of Knowing640-802E.
The network address space that is provided requires a single network-wide mask.F. The AREA 1 IP address space is inadequate for the number of users.Answer: C, D, FExplanation:C: Since there are only 60 users on this LAN, a /25 could be used as that will provide forup to 128 IP addresses (126 usable).
In fact, since there are only 60 users, a /26 could beused as that will provide for up to 62 usable IP addresses. However, this would notaccommodate any kind of growth and could cause problems in the future.D: On point to point serial router links, a /30 is generally used as this will allow for only2 usable IP addresses, which is all that is needed. In this case, a /26 has been assigned.F: In this area, there are 500 users, but a /24 will only provide for 254 usable IPaddresses. A /23 or larger will be needed to accommodate this many users.QUESTION 346:The following output was shown on router Certkiller 3:Refer to the output of the two show commands in the exhibit above.
If the Certkillernetwork administrator tries to ping host 10.1.8.55 from host 10.1.6.100, how willthese ICMP packets be processed by Router Certkiller 3?A. The packets will be routed out the Fa0/0 interfaceB. The packets will be discardedC. The packets will be routed out the S0/0 interfaceD. The packets will be routed out the S0/1 interfaceE. None of the aboveAnswer: DActualtests.com - The Power of Knowing640-802QUESTION 347:Router CK1 receives information about network 192.168.111.0/24 from multiplesources. What will CK1 consider the most reliable information about the path tothat network?A.
An OSPF update for network 192.168.111.0/16B. A static route to network 192168.1111.0/24C. A Directly connected interface with an address of 192.168.1111.254/24D. A RIP update for network 192.168.1111.0/24E. A Default route with a next hop address of 192.168.1111.1F. A static route to network 192.168.1111.0/24 with a local serial interface configured asthe next hopG. None of the aboveAnswer: CQUESTION 348:Router CK1 has just received a packet and needs to route it. What two actions mustthis router take in order to route incoming packets? (Choose two)A. Inspect the routing table to select the best path to the destination network addresses.B. Validate sources of routing information.C.
Inspect the ARP table to verify a legitimate source MAC address for each packet.D. Identify the destination network address of each packet.E. Verify the receipt of routed packets by the next hop router.F. Identify the source network address of each packet.Answer: A, DExplanation:The router decides how to forward an incoming packet by finding the routes that "match"the destination address of the packet, and then forwarding it according to the mostnarrowly applicable one. A packet matches a route in the following way: a packet has(among other things) a destination address in its header, a route contains either a networkor a host address, a network mask (netmask), and instructions on how to forward a packetusing the route.
The packet matches the route if its destination address is part of theaddress subspace defined by the network address or exactly matches the host address ofthe route. A route is more narrowly applicable than another if the address subspacedefined by its network address contains fewer actual addresses than the other, which isindicated by the netmask.
An entry with a host address, rather than a network address, isthe narrowest kind.Actualtests.com - The Power of Knowing640-802QUESTION 349:Part of the Certkiller network is shown below:In this network, host Certkiller A has established communications with hostCertkiller B for the first time. What enabled router Certkiller 2 to forward this trafficin the appropriate direction to reach the network to which host Certkiller B isattached?A. A default gatewayB. TCP/IPC. A routing protocolD. DHCPE. A Layer 4 protocolF.
DNSG. None of the aboveAnswer: CExplanation:Routing is the process of selecting paths in a network along which to send data orphysical traffic. In order for routers to know how to forward traffic to the correctdestinations located on other IP networks, a routing protocol must be enabled, either viathe use of a dynamic routing protocol such as RIP or EIGRP, or through the use of staticroutes.QUESTION 350:Exhibit:Actualtests.com - The Power of Knowing640-802You work as a network technician at Certkiller .com.
Study the exhibit carefully. Forwhat reasons have this Certkiller router loaded its IOS image from the location thatis shown? (Choose two)A. Certkiller 3 defaulted to ROMMON mode and laded the IOS image from a TFTPserverB. Cisco Routers will first attempt to load an image from TFTP for management purposeC. Ruouter1 has specific boot system commands that instruct it to load IOS from a TFTPserverD. Certkiller 3 is acting as a TFTP server fro other routersE.
Certkiller 3 can't locate valid IOS image in flash memoryAnswer: C, EQUESTION 351:Actualtests.com - The Power of Knowing640-802You work as a network technician at Certkiller .com. Study the exhibit carefully.What will router Certkiller A do when it starts up next time?A. start the limited IOS in ROMB. start in ROM monitor modeC. retrieve configuration information from the running-config fileD.
look for startup instructions in NVRAME. load IOS from flashAnswer: BExplanation:RAM-Sometimes called DRAM for dynamic random-access memory, RAM is used bythe router just as it is used by any other computer: for working storage. The running oractive configuration file is stored here.ROM-This type of memory (read-only memory) stores a bootable IOS image, whichtypically is not used for normal operation. ROM contains the code that is used to boot therouter until the router knows where to get the full IOS image or as a backup bootableimage, in case there are problems.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 configurationActualtests.com - The Power of Knowing640-802files.NVRAM-Nonvolatile RAM stores the initial or startup configuration file.IOS on a router uses a configuration file for the initial configuration at router startup andthe active, running configuration file.
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