ActualTests.Cisco.640-802.Exam.Q.and.A.08.15.08-DDU (1130589), страница 6
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Routers contain multiple Ethernetinterfaces and are designed to receive a packet on one Ethernet port and transmit the dataonto another Ethernet port in a new packet.Actualtests.com - The Power of Knowing640-802FIGURE 2 Routers creates separate collision domainsInstead of propagating collision signals between Ethernet segments, routers interrupt thecollision domain and allow the Ethernets they link to operate independently. Therefore,you can use packet switching hubs to build larger network systems by interconnectingindividual Ethernet systems.QUESTION 50:You work as a network technician at Certkiller .com. You have been assigned thetask of designing a new Certkiller internetwork.
The main priority is to achieve thehighest reliability available. Certkiller .com is willing to spend more dollars to avoiddowntime caused by link failure.Which of the following four designs is to be preferred?Actualtests.com - The Power of Knowing640-802A. Design Certkiller AB. Design Certkiller BC. Design Certkiller CD. Design Certkiller DAnswer: AExplanation:A network topology that is set up so that each device is directly connected to every otherdevice on the network. This connection method has built-in redundancy.
If one link goesdown, the device will transmit via another link.Example:If the partial mesh design is a compromise between the network administrators andmanagers, then the full mesh design implies that the network administrators won. Thisdesign is every Cisco network administrator's picture of perfection over a Frame Relaycloud. It gives every site a direct virtual circuit to every other site, as shown in FigureThis design gives maximum redundancy and minimum packet latency (latency describeshow long it takes a packet to reach each location).QUESTION 51:You work as a network technician at Certkiller .com.
You have been assigned thetask of designing a new Certkiller internetwork. The main priority is the achieve thehighest reliability available, however not at all costs. Certkiller .com is willing tospend more dollars to avoid downtime caused by link failure.Which of the following four designs would provide some redundancy and increasereliability for all four sites, but would cost less than a fully redundant topology?Actualtests.com - The Power of Knowing640-802A. Design Certkiller AB. Design Certkiller BC.
Design Certkiller CD. Design Certkiller DAnswer: BExplanation:You can think of the partial mesh Frame Relay design as the compromise betweennetwork administrators and cost-saving managers.Example:QUESTION 52:You work as a network technician at Certkiller .com. You have been assigned thetask of designing a new Certkiller internetwork.
The main priority is to minimize theActualtests.com - The Power of Knowing640-802link costs and at the same time wants to ensure the branch offices with directconnectivity to the main site.Which of the following four designs is to be preferred?A. Design Certkiller AB. Design Certkiller BC.
Design Certkiller CD. Design Certkiller DAnswer: CExplanation:Everynetwork looks for cost efficiency. Redundancy is often sacrificed on the altar of monthlycost. Thus, the hub and spoke Frame Relay network design is one of the more common.In this configuration, you pick a centralized location (most likely, your largest, mostconnected office) as the "hub" of the network. All other locations are considered"spokes" and have a single virtual circuit connection back to the hub.The major advantage of this configuration is the cost. It offers the cheapest monthly pricetag, which cost-cutting corporations enjoy.
The disadvantages are beginning to mountagainst this design, however. The redundancy is sorely lacking. If a single router (thecentral router) loses connectivity for any reason (if the router crashes, if a trenchingcompany cuts through the line), your entire WAN goes down. The other disadvantage ofthis design is beginning to eclipse even redundancy. It is the disadvantage of tandemswitching. Any time the spoke offices need to reach each other, they must go through thehub office.Actualtests.com - The Power of Knowing640-802Example:QUESTION 53:A Certkiller network is shown in the exhibit below:The routers in this network are running RIPv2.
Which addressing scheme wouldsatisfy the needs of this network yet waste the fewest addresses?A. Network 1: 192.168.10.0/26Network 2: 192.168.10.64/26Network 3:192.168.10.128/26Serial link 1: 192.168.20.0/24Serial link 2: 192.168.30.0/24B. Network 1: 192.168.10.0/26Network 2: 192.168.10.64/28Network 3:192.168.10.80/29Serial link 1: 192.168.10.88/30Serial link 2: 192.168.10.96/30C. Network 1: 192.168.10.0/26Network 2: 192.168.10.64/27Network 3:192.168.10.96/28Serial link 1: 192.168.10.112/30Serial link 2: 192.168.10.116/30D.
Network 1: 192.168.10.0/27Network 2: 192.168.10.64/28Network 3:192.168.10.96/29Serial link 1: 192.168.10.112/30Serial link 2: 192.168.10.116/30Answer: CExplanation:Network 1Required Number of hosts :50Actualtests.com - The Power of Knowing640-802When We use the 26 bits for Network : 11111111.11111111.11111111.11000000 so 62usable host can be in one network. 50 host for now and remaining hosts address forfurther growth.Network 2Required Number of Hosts: 20When we use the 27 bits for Network: 11111111.11111111.1111111.11100000 so 30usable hosts can be in one network.Network 3Required Number of Hosts: 10When we use the 28 bits for Network: 11111111.11111111.11111111.11110000 so 14usable hosts can be in one network.Connection between CK1 , CK2 and CK3 is WAN so when you use 30 bits network IP,you will not lose any IP addresses from network since this subnet allows for only 2 hostaddresses.QUESTION 54:The Certkiller network is shown below:A technician is investigating a problem with the network shown above.
Thesesymptoms have been observed:1. All of the user hosts can access the Internet.2. None of the user hosts can access the server in VLAN93. All of the hosts can ping each other.What could cause the symptoms?A. Interface S0/0 on the router is down.B. Interface Fa1/0 on the router is down.C. Interface Fa0/5 on Certkiller 3 is down.D.
Interface Fa0/4 on Certkiller 3 is down.E. Certkiller 2 is turned off.F. Trunking is not enabled on the link between Certkiller 1 and Certkiller 3.Answer: DExplanation:Actualtests.com - The Power of Knowing640-802Since all user hosts have access to internet, link to router has to be up.
Therefore, routerinterface (Fa0/1 - believe it is labeled incorrectly on diagram as Fa1/0) must be up. Sinceall hosts can ping each other, but none can get to VLAN 9 which is through singleinterface Fa0/4, this interface must be down.Choice A: incorrect, S0/0 must be up if internet access available.Choice B: incorrect, Fa0/1 must be up if internet access (through router) available.Choice C: incorrect, would not prevent access to VLAN9 via other routes (i.e Fa0/7,Fa0/9, Fa0/4)Choice D: correctChoice E: incorrect: Certkiller 2 must be up if internet access (through switch and thenrouter) availableChoice F: incorrect: Disabled trunking on link between Certkiller 1 and Certkiller 3 wouldnot prevent access to VLAN9 via other routesQUESTION 55:Refer to the graphic shown below:What symbol represents a type of device that is connected to interface FastEthernet0/23 of the 2960 switch Sw1-2960?A.
Picture AB. Picture BC. Picture CActualtests.com - The Power of Knowing640-802D. Picture DAnswer: DExplanation:Some of the common Cisco symbols are shown below:Note: Choice B in this question represents an ATM switch, which is not pictured above.From the output shown in this question, we can see that there a numerous different MACaddresses associated with port Fa 0/23. This can only mean that a device with multiplehosts attached to it is plugged into this port, such as a hub or another switch.QUESTION 56:Part of the Certkiller network topology is shown below:Actualtests.com - The Power of Knowing640-802Entry exhibit:Host Certkiller A pings Host Certkiller B, which entry will be in the ARP cache ofHost Certkiller A to support this transmission?A. AActualtests.com - The Power of Knowing640-802B.
BC. CD. DE. EAnswer: CQUESTION 57:The Certkiller network is shown in the following exhibit:Certkiller uses EIGRP as the routing protocol. Based on the info shown above, whatpath will packets take from a host on the 192.168.10.192/26 network to a host on theLAN attached to router Certkiller 1?A. The path of the packets will be Certkiller 3 to Certkiller 2 to Certkiller 1B. The path of the packets will be Certkiller 3 to Certkiller 1 to Certkiller 2C. The path of the packets will be both Certkiller 3 to Certkiller 2 to Certkiller 1AND Certkiller 3 to Certkiller 1D. The path of the packets will be Certkiller 3 to Certkiller 1E. None of the aboveAnswer: DExplanation:Based on the routing table of Certkiller 3, the best path to the Certkiller 1 LAN is shown onthe first routing entry (192.168.10.64).
Certkiller 3 will use the Serial 0/0 interface toroute traffic to this destination, with the next hop IP address of 192.168.10.9, which is thenetwork used between Certkiller 3 and Certkiller 1, making choice D correct. Note thatActualtests.com - The Power of Knowing640-802there is only one routing entry for this destination. If traffic were load balancing overboth paths, then both would be displayed in the routing table.QUESTION 58:Refer to the following exhibit:Based on the diagram shown above, what is the correct addressing for a frame andpacket received by Host Certkiller B from Host Certkiller A?A. Destination MAC: 0011.43da.2c98Source MAC: 0070.0e8f.088aDestination IP: 192.168.60.5Source IP: 192.168.60.1B. Destination MAC: 0011.43da.2c98Source MAC: 0070.0e8f.088aDestination IP: 192.168.60.5Source IP: 192.168.24.5C.
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