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单选题
A RIP router has an entry in the routing table for a specific network destination. It then gets updated with another entry for that same destination, but with a higher path cost (hop count) than the one already in the routing table. What will the router do in this situation?（）
A
It will ignore the update and take no further action.
B
It will add the update information to its routing table.
C
It will replace the existing routing table entry with the update information.
D
It will delete the existing routing table and will send out hello packets to rebuild the routing table.
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更多 “单选题A RIP router has an entry in the routing table for a specific network destination. It then gets updated with another entry for that same destination, but with a higher path cost (hop count) than the one already in the routing table. What will the router do in this situation?（）A It will ignore the update and take no further action.B It will add the update information to its routing table.C It will replace the existing routing table entry with the update information.D It will delete the existing routing table and will send out hello packets to rebuild the routing table.” 相关考题
考题
阅读下面的短文，回答问题 [When an IP packet arrives at a router, generally the router looks at the destination address of the packet, and forwards the packet to one of its network interfaces. The forwarding decision is usually done by looking up the destination address from another data structure called a forwarding table. The forwarding table is created by the router using the routing table and possible routing policies existing in the router. The router then creates a table where it lists which networks are accessible through which of the routers network interfaces. An IP router looks at every IP packet individually and does the forwarding decision on a packet-by-packet basis. If something changes in the routers routing table, a packet can take a different route from a preceding packet even if it has the same destination.] From the paragraph above，we can see that the router （ ） a forwarding table according to the routing table and possible routing policies existing in the router. When an IP packet arrives at a router, the （ ） part of packet is normally checked by the router. An IP router checks every IP Packet individually and makes the forwarding decision based on （ ）.A．is generating B．generate C．is generated D．generates A．forwarding table B．network interfaces C．routing policies D．destination address A．the destination address and network interfaces B．forwarding table and network interfaces C．the destination address and forward table D．routing policies and routing table
考题
After connecting a PC to an available port on a switch, you find that the PC can not access any of the resources on the LAN. No other PC's connected to the switch appear to be having any issues. What is the most likely cause for this problem?A．The router lacks a routing table entry for the new hostB．The host switch port is assigned to the incorrect VLANC．The host MAC address is incorrectly configuredD．A STP instance for the new host has not been initializedE．The switch does not have the MAC address hard coded in the CAM table.
考题
To a router, a flow is a(66)of packets that share the same Characterstics, such as traveling the same(67),using the same(68),having the same kind of security, and so on. A router that supports the handling of flow labels has a(69)table. The table has an entry for each active flow label; each entry defines the(70)required by the corresponding flow label.A．sequenceB．streamC．QueuesD．flow
考题
Refer to the exhibit and the partial configuration on router R2. On router R4 all RIP routes are redistributed into the OSPF domain. A second redistribu tion is configured on router R2 using a route map. Based on the configuration on router R2, which EIGRP external routes will be present in the routing table of R1?（）A. the routes originating from the RIP routing domainB. the routes originating from the OSPF stub areaC. all OSPF inter and intra - area routesD. all routes originating from RIP and OSPF routing domains
考题
Which of the following are shared distribution tree characteristics()
A.Memory requirements are higher for shared distribution tree than for source distributiontree.B.Creates a tree from a central RP to all last-hoprouters.C.Uses a rendezvous point.D.An optimal path is created between each source router and each last-hoprouter.E.Place（S，G）entry in each router’smulticast routing table.F.Place（*，G）entry in a router’smulticast routing to table.
考题
Refertotheexhibit.Tworoutershavejustbeenconfiguredbyanewtechnician.Allinterfacesareup.However,theroutersarenotsharingtheirroutingtables.Whatistheproblem?()
A.Split horizon is preventing Router2 from receiving routing information from Router1.B.Router1 is configured for RIP version 2,and Router2 is configured forRIP version 1.C.Router1 has an ACL that is blocking RIP version 2.D.There is a physical connectivity problem between Router1 and Router2.E.Router1 is using authentication and Router2 is not.
考题
One of the most widely used routing protocols in IP networks is the Routing Information Protocol(RIP)．RIP is the canonical example of a routing protocol built on the (71) algorithm．Routing protocols in internetworks differ slightly from the idealized graph model．In aninternetwork，the goal of the routers to forward packets to various (72) ．Routers running RIP send their advertisement about cost every (73) seconds．A router also sends an update message whenever an update from another router causes it to change itsrouting table．It is possible to use a range of different metrics or costs for the links in a routing protocol．RIP takes the simplest approach，with all link costs being equal (74) Thus it always tries tofind the minimum hop route．Valid distances are 1 through (75) ．This also limits RIP torunning on fairly small networks．（71）A．distance vectorB．link stateC．floodingD．minimum spanning tree
考题
One of the most widely used routing protocols in IP networks is the Routing Information Protocol（RIP）。RIP is the canonical example of a routing protocol built on the（ ）algorithm.Routing protocols in internetworks differ slightly from the idealized graph model.In an internetwork,the goal of the routers to forward packets to various（ ）.
Routers running RIP send their advertisement about cost every（ ）seconds.A router also sends an update message whenever an update from another router causes it to change its routing table.
It is possible to use a range of different metrics or costs for the links in a routing protocol.RIP takes the simplest approach,with all link costs being equal（ ）。Thus it always tries to find the minimum hop route.Valid distances are 1 through（请作答此空）。This also limits RIP to running on fairly small networks.A.6
B.10
C.15
D.16
考题
One of the most widely used routing protocols in IP networks is the Routing Information Protocol（RIP）。RIP is the canonical example of a routing protocol built on the（ ）algorithm.Routing protocols in internetworks differ slightly from the idealized graph model.In an internetwork,the goal of the routers to forward packets to various（请作答此空）.
Routers running RIP send their advertisement about cost every（ ）seconds.A router also sends an update message whenever an update from another router causes it to change its routing table.
It is possible to use a range of different metrics or costs for the links in a routing protocol.RIP takes the simplest approach,with all link costs being equal（ ）。Thus it always tries to find the minimum hop route.Valid distances are 1 through（ ）。This also limits RIP to running on fairly small networks.A.computers
B.routers
C.switches
D.networks
考题
Which two statements are characteristics of a distance vector routing protocol?（）A、RIP is an example of distance vector routing protocolsB、Updates are periodic and include the entire routing tableC、Routing updates are sent only after topology changesD、The protocol can be useful in hub-and-spoke and hierarchical networksE、Convergence is usually faster than with link state protocolsF、Each router has its own view of the topology
考题
The Testking router is running both RIP and IGRP, and the same route is learned by this router from both of these methods. However, when you issue the command"show ip route" you see only the IGRP route, and not the RIP route. Why is this?（）A、IGRP has a faster update timer.B、IGRP has a lower administrative distance.C、RIP has a higher metric value for that route.D、The IGRP route has fewer hops.E、The RIP path has a routing loop.
考题
A router simultaneously receives all the following routes in various routing updates. Which of thefollowing routes would end up in the routing table？（Choose all that apply.）（）A、RIP route 10.1.2.0/24B、EIGRP route 10.1.2.0/24C、RIP route 10.1.0.0/16D、OSPF route 10.1.0.0/16E、RIP route 10.0.0.0/16F、OSPF route 10.1.2.0/24
考题
In BGP routing，what does the rule of synchronization mean？（）A、A BGP router can only advertise an EBGP learned route，provided that the route is an IGP route in the routing table.B、A BGP router can only advertise an IBGP learned route，provided that the route is an IGP route in the routing table.C、A BGP router can only advertise an IBGP learned route，provided that the route is an IGP route that is not in the routing table.D、A BGP router can only advertise an EBGP learned route，provided that the route is a metric of 0 in the BGP table.
考题
A router has learned three possible routes that could be used to reach a destination network. One route is from EIGRP and has a composite metric of 20514560. Another route is from OSPF with a metric of 782.The last is from RIPv2 and has a metric of 4. Which route or routes will the router install in the routing table?（）A、Router R2 will not form a neighbor relationship with R1.B、Router R2 will obtain a full routing table, including a default route, from R1.C、R2 will obtain OSPF updates from R1, but will not obtain a default route from R1.D、R2 will not have a route for the directly connected serial network, but all other directly connected
考题
Which command can be used to filter a RIPv6 route from getting installed in the routing table？（）A、ipv6 router rip ccie distribute-list..B、ipv6 router rip ccie offset-list..C、interface e0/0 ipv6 rip ccie distribute-list..D、interface e0/0 ipv6 rip ccie advertise..
考题
Which two statements are characteristics of a distance vector routing protocol?（）A、RIP is an example of distance vector routing protocols.B、Updates are periodic and include the entire routing table.C、Routing updates are sent only after topology changesD、The protocol can be useful in hub-and-spoke and hierarchical networks.E、Convergence is usually faster than with link state protocolsF、Each router has its own view of the topology
考题
The routers named Testking1 and Testking2 are both configured with RIP only.What will happen in the event of Testking1 receiving a routing update that contains a higher cost path to a network already in its routing table?（）A、The update information will be added to the existing routing table.B、The update information will replace the existing routing table entry.C、The update will be ignored and thus no further action will occur.D、The existing routing table entry will be purged from the routing table and all routers will attempt convergence.
考题
Which of the following are shared distribution tree characteristics？ （Choose all that apply.）（）A、Memory requirements are higher for shared distribution tree than for source distribution treeB、Creates a tree from a central RP to all last-hop routersC、Uses a rendezvous pointD、An optimal path is created between each source router and each last-hop routerE、Place （S，G） entry in each router’s multicast routing tableF、Place （*，G） entry in a router’s multicast routing to table
考题
The following output on Router R1 lists details of a BGP route for 190.1.0.0/16. Which of the following is true based on this output?（） R1# show ip bgp 190.1.0.0/16 BGP routing table entry for 190.1.0.0/16, version 121 Paths: (1 available, best #1, table Default - IP - Routing - Table) Advertised to update - groups: 1 1 2 3 4 1.1.1.1 from 2.2.2.2 (3.3.3.3) Origin IGP, metric 0, localpref 100, valid, internal, bestA、R1 has a neighbor 1.1.1.1 command configured.B、R1 has a neighbor 2.2.2.2 command configured.C、The show ip bgp command lists a line for 190.1.0.0/16 with both a n and an i on the left.D、R1 is in ASN 1.
考题
A RIP router has an entry in the routing table for a specific network destination. It then gets updated with another entry for that same destination, but with a higher path cost (hop count) than the one already in the routing table. What will the router do in this situation?（）A、It will ignore the update and take no further action.B、It will add the update information to its routing table.C、It will replace the existing routing table entry with the update information.D、It will delete the existing routing table and will send out hello packets to rebuild the routing table.
考题
You are a systems engineer for your company. Your company has 20，000 users in a large campus environment located in Los Angeles. Each department in the company is located in its own building. Each department has its own IT staff， which is responsible for all network administration within the building. The company’s network is divided into several IP subnets that are connected to one another by using dedicated routers. Each building on the company’s main campus contains at least one subnet， and possibly up to five subnets. Each building has at least one router. All routers use RIP version 2 （RIPv2） broadcasts. The company acquires a new business unit located in Denver. The Denver office has 25 users. The network in the Denver office is connected to the network at the main campus by using a leased frame relay connection. The network administrator at the Denver office installs a Windows Server 2003 computer and configures Routing and Remote Access on this server. The network administrator at the Denver office configures this server as a router and implements RIPv2 in Routing and Remote Access. Later， the Denver administrator reports that his router is not receiving routing table updates from the routers on the main campus network. He must manually add routing entries to the routing table to enable connectivity between the locations. You investigate and discover that the RIPv2 broadcasts are not being received at the Denver office. You also discover that no routing table announcements from the Denver office are being received on the main campus network. You need to ensure that the network in the Denver office can communicate with the main campus network and can send and receive automatic routing table updates as network conditions change. What should you do on the router in the Denver office？（）A、 Configure the router to use RIPv1 broadcasts.B、 Configure the router to use auto-static update mode.C、 Add the IP address ranges of the main campus network to the router’s Accept list and Announce list.D、 Add the IP addresses of the main campus routers to the router’s Neighbors list.
考题
单选题In BGP routing，what does the rule of synchronization mean？（）A
A BGP router can only advertise an EBGP learned route，provided that the route is an IGP route in the routing table.B
A BGP router can only advertise an IBGP learned route，provided that the route is an IGP route in the routing table.C
A BGP router can only advertise an IBGP learned route，provided that the route is an IGP route that is not in the routing table.D
A BGP router can only advertise an EBGP learned route，provided that the route is a metric of 0 in the BGP table.
考题
单选题The routers named Testking1 and Testking2 are both configured with RIP only.What will happen in the event of Testking1 receiving a routing update that contains a higher cost path to a network already in its routing table?（）A
The update information will be added to the existing routing table.B
The update information will replace the existing routing table entry.C
The update will be ignored and thus no further action will occur.D
The existing routing table entry will be purged from the routing table and all routers will attempt convergence.
考题
单选题The Testking router is running both RIP and IGRP, and the same route is learned by this router from both of these methods. However, when you issue the command"show ip route" you see only the IGRP route, and not the RIP route. Why is this?（）A
IGRP has a faster update timer.B
IGRP has a lower administrative distance.C
RIP has a higher metric value for that route.D
The IGRP route has fewer hops.E
The RIP path has a routing loop.
考题
多选题The following output on Router R1 lists details of a BGP route for 190.1.0.0/16. Which of the following is true based on this output?（） R1# show ip bgp 19 0.1.0.0/16 BGP routing table entry for 190.1.0.0/16, version 121 Paths: (1 available, best #1, table Default - IP - Routing - Table) Advertised to update - groups: 1 1 2 3 4 1.1.1.1 from 2.2.2.2 (3.3.3.3) Origin IGP, metric 0, localpref 100, valid, internal, bestAR1 has a neighbor 1.1.1.1 command configured.BR1 has a neighbor 2.2.2.2 command configured.CThe show ip bgp command lists a line for 190.1.0.0/16 with both an and an i on the left.DR1 is in ASN 1.
考题
单选题Which command can be used to filter a RIPv6 route from getting installed in the routing table？（）A
ipv6 router rip ccie distribute-list..B
ipv6 router rip ccie offset-list..C
interface e0/0 ipv6 rip ccie distribute-list..D
interface e0/0 ipv6 rip ccie advertise..
考题
多选题Which of the following are shared distribution tree characteristics（）AMemory requirements are higher for shared distribution tree than for source distributiontree.BCreates a tree from a central RP to all last-hoprouters.CUses a rendezvous point.DAn optimal path is created between each source router and each last-hoprouter.EPlace（S，G）entry in each router’smulticast routing table.FPlace（*，G）entry in a router’smulticast routing to table.
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