ActualTests.Cisco.640-802.Exam.Q.and.A.08.15.08-DDU (1130589), страница 51
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Note that RIPv2 does support VLSM, andwould be a valid choice.C, E: EIGRP and IGRP are Cisco proprietary routing protocols, and are not supported byother vendors.F. CDP is the Cisco Discovery Protocol, which is used to exchange information betweenCisco devices. It can only be used between Cisco routers and switches, and it is not arouting protocol.QUESTION 453:You need to configure a single router into load balancing traffic across 4 unequalcost paths.
Which routing protocols can satisfy this requirement? (Select two)A. RIP v1B. RIP v2C. IGRPD. EIGRPE. OSPFF. IS-ISAnswer: C, DExplanation:In general, load balancing is the capability of a router to distribute traffic over all itsnetwork ports that are the same distance from the destination address. Load balancingincreases the utilization of network segments, thus increasing effective networkbandwidth. There are two types of load balancing: equal cost path and unequal cost path.Every routing protocol supports equal cost path load balancing. In addition to that, IGRPand EIGRP also support unequal cost path load balancing, which is known as variance.The variance command instructs the router to include routes with a metric less than ntimes the minimum metric route for that destination, where n is the number specified bythe variance command.
The variable n can take a value between 1 and 128, with thedefault being 1, which means equal cost load balancing (variance<n> for example.Actualtests.com - The Power of Knowing640-802Traffic is also distributed proportionally among unequal cost links, with respect to themetric.QUESTION 454:You need to choose a routing protocol for a new Certkiller network. This networkwill be running IP, IPX, and AppleTalk, and you wish to utilize only one routingprotocol. Which one would be the best choice?A.
OSPFB. EIGRPC. RIP v2D. IGRPE. RIP v1Answer: BExplanation:Only EIGRP provides routing protocol support for IP, IPX, and AppleTalk networks.QUESTION 455:Which of the routing protocols shown below support both VLSM and routesummarization? (Select three)A. IGRPB. EIGRPC. RIP v1D. RIP v2E. OSPFF. VTPG. CDPAnswer: B, D, EExplanation:EIGRP and OSPF support Variable Length Subnet Masks (VLSM) and provide for bothautomatic and manual route summarization configurations. RIPv2 is an enhanced versionof RIP, and overcame some of the limitations of RIP by introducing support for VLSM.Incorrect Answers:A, C: IGRP and RIP are relatively old and simplistic routing protocols that weredeveloped before the concepts of VLSM and route summarization.F.
VTP is the VLAN Trunking Protocol, used in switched LAN environments to carryVLAN information. It is not a routing protocol.Actualtests.com - The Power of Knowing640-802G. CDP is the Cisco Discovery Protocol, used between neighboring Cisco devices toautomatically discover information. It is not a routing protocol.QUESTION 456:Which of the following routing protocols support the use of VLSM (Variable LengthSubnet Masking)? (Select three)A. RIPv1B. EIGRPC. OSPFD. IGRPE. RIPv2Answer: B, C, EExplanation:Static routing, OSPF, IS-IS, EIGRP, BGP, and RIP version 2 all support VLSM.Incorrect Answers:A, D: RIPv1 and IGRP do not support VLSM.Reference: Sybex CCNA Study Guide edition 4, Page 123QUESTION 457:Which of the following routing protocols do NOT support VLSM (variable lengthsubnet masking)? (Choose all that apply).A.
RIPv1B. IGRPC. EIGRPD. OSPFE. IS-ISF. RIPv2Answer: A, BExplanation:RIP version 1 and IGRP are classful IP routing protocols. They do not support variablelength subnet masks.Incorrect Answers:C, D, E, F. Static routing, OSPF, IS-IS, EIGRP, BGP, and RIP version 2 all supportVLSM.Actualtests.com - The Power of Knowing640-802QUESTION 458:You need to implement the use of a routing protocol that meets the followingrequirements:1. Converges quickly2. Supports VLSM, CIDR, IP, and IPX.3. Uses minimal bandwidth for routing updates.Which one of the following routing protocols would be the best choice?A. RIPv1B. RIPv2C.
IGRPD. OSPFE. EIGRPAnswer: EExplanation:EIGRP would be the best choice as it provides support for VLSM and CIDR, has fasterconvergence times than other protocols, is scalable, and supports IP, IPX, and AppleTalk.EIGRP is a Cisco proprietary routing protocol, so it will not work with other vendors.However, the requirements of the question made no mention of the use of non-Ciscorouters, so it will not be an issue in this case.Incorrect Answers:A, C: Both of these routing protocols do not support VLSM.B. While RIPv2 supports VLSM, it provides no support for IPX. The IPX RIP protocol issimilar in function to RIP version 1. Both versions of RIP also consume more bandwidththan EIGRP.D. OSPF does not support IPX.QUESTION 459:See the Certkiller WAN diagram below:Actualtests.com - The Power of Knowing640-802Certkiller has four offices, each with its own network, as shown in the graphic.
Threeof the networks have approximately 50 hosts each, and one network has 10 hosts.The multi-vendor routers are connected by serial links that use separatesubnetwork numbers. The Certkiller network has leased one Class C address to beused for all networks and serial links, and they do not wish to replace any of theirexisting routers.Which routing protocol would be most appropriate for this scenario?A.
TCP/IPB. RIP version 1C. RIP version 2D. IGRPE. EIGRPF. All of the above are acceptableAnswer: CExplanation:The question describes 2 important requirements. The first is the fact that a routingprotocol that supports VLSM is needed, as specified by the fact that one class C addressrange is to be used for all networks. The second important requirement is that routersfrom multiple vendors are being used, so the routing protocol chosen must benon-proprietary.
RIP version 2 is a standards based routing protocol that supportsvariable length subnet masking (VLSM). Note that OSPF would also be a viable choice,but it was not one of the answer choices.Incorrect Answers:A. This is not a routing protocol.B. RIP version 1 does not support VLSMActualtests.com - The Power of Knowing640-802D, E: Although these both support VLSM, IGRP and EIGRP are Cisco proprietaryrouting protocols which are not supported by other router vendors.QUESTION 460:The Certkiller WAN is displayed in the diagram below:Based on the information shown above, which routing protocols can be used withinthe Certkiller network show in the diagram? (Choose three).A. RIP v1B. RIP v2C.
IGRPD. OSPFE. BGPF. EIGRPAnswer: B, D, FExplanation: the exhibit showed routers withVariable Length Subnet Mask (VLSM),and asked which 3 protocols can be used. 3 protocols that support VLSM are RIP v2,OSPF and EIGRP.Incorrect Answers:A, C: Both of these routing protocols do not support VLSM information.E. BGP is used for external routing between different autonomous systems, and is notgenerally used within a single AS.QUESTION 461:The Certkiller Network consists of the following 5 IP networks:NETWORK 1: 192.168.10.0/26NETWORK 2: 192.168.10.64/27NETWORK 3: 192.168.10.96/27NETWORK 4: 192.168.10.128/30NETWORK 5: 192.168.10.132/30Actualtests.com - The Power of Knowing640-802Which of the following routing protocols will support this IP addressing scheme?(Choose all that apply).A.
RIP version 1B. RIP version 2C. IGRPD. EIGRPE. OSPFF. BGPAnswer: B, D, EExplanation:Because this network is using IP subnets with variable length subnet masks, only routingprotocols that support VLSM will fit this particular case. The routing protocols thatsupport VLSM are RIP v2, EIGRP and OSPF.Incorrect Answers:A, C: RIP version 1 and IGRP do not support VLSM information within the routingupdates.F.
BGP is used for inter-AS routing, such as the Internet. It is not normally used as anInterior routing protocol.QUESTION 462:The Certkiller network is shown in the following exhibit:Which routing protocols can be used within the Certkiller network shown in thediagram? (Choose three.)A. RIP v1B. RIP v2C. IGRPActualtests.com - The Power of Knowing640-802D.
OSPFE. BGPF. EIGRPAnswer: B, D, FExplanation:In this network there are IP subnets which use variable length subnet masks. RIP V2,OSPF and EIGRP are the interior routing protocols that support VLSM.QUESTION 463:Certkiller .com is merging with several local businesses that use routers frommultiple vendors. Which routing protocol would work best to connect Certkiller .comwith the enterprise networks it has acquired by providing scalability and VLSMsupport while minimizing network overhead?A.
IGRPB. EIGRPC. OSPFD. RIP v2E. RIP v1Answer: DExplanation:RIP (both version 1 and version 2) is standards based, providing inter-operability supportbetween vendors. RIPv2 is an enhancement to the first version and contains the followingenhancements:1. Support for variable length subnet masks (VLSM) (Because of this, RIP doesn'tassume that all networks are classful.)2. Multicast routing updates3. Authentication with an encrypted password for routing updatesIncorrect Answers:A, B: IGRP and EIGRP are Cisco proprietary routing protocols that are not supported byother vendors.C: OSPF is a CPU-intensive protocol, and very large OSPF networks can experiencerouting and update traffic problems that seriously impact network performance. Inaddition, routers in large OSPF networks require large amounts of memory.E: RIPv1 does not support VLSM.QUESTION 464:The Certkiller WAN is displayed in the diagram below:Actualtests.com - The Power of Knowing640-802Which dynamic routing protocol should be recommended for the Certkiller networkshown in the graphic above? (Choose three)A.
OSPFB. RIP version 1C. RIP version 2D. IGRPE. EIGRPAnswer: A, C, EExplanation:In this network, the 192.168.23.0/24 network is subnetted into two other networks.Because this class C network is being subnetted, a routing protocol that supports variablelength subnet mask information is required. OSPF, EIGRP, and RIP version 2 all supportVLSM information to be shared across the network.Incorrect Answers:B, D. RIP version 1 and IGRP do not support VLSM, which will be required in order forthis network to have the two LANs both be reachable.QUESTION 465:Router CK1 learns about a remote network from EIGRP, OSPF, and a static route.Assuming all routing protocols are using their default administrative distance,which route will CK1 use to forward data to the remote network?A. The router will use the static route.B.
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