Router R1 currently has no configuration related to IPv6 or IPv4. The following configuration exists in a planning document, intended to be used to copy/paste into Router R1 to enable OSPFv3 on interfaces F0/0 and S0/0/0. No other related configuration exists. Assuming F0/0 and S0/0/0 reach an up/up state, which of the following is true about OSPFv3 on R1 after this configuration has been pasted into R1？（）ipv6 router ospf 1ipv6 unicast- routinginterface f0/0ipv6 address 2000 ::1/64ipv6 ospf 1 area 1interface s0/0/0ipv6 address 2001::/64 eui - 64ipv6 ospf 1 area 0
A. OSPF works on F0/0 and S0/0/0 without further configuration
B. OSPF works with the addition of one command: a no shutdown command in OSPF router configur ation modE
C. OSPF works with the addition of one command: an router - id command in OSPF router configuration modE
D. OSPFv3 needs at least two more configuration commands before it works on R1
时间：2023-09-10 13:56:19
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You want to allow Router R1 to immediately become the active router if its priority is highest than the active router fails. What command would you use if you wanted to configure this？ （）
A . en standby preempt
B . standby preempt enable
C . standby preempt
D . hot standby preempt
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Which command will reinitialize the router and totally replace the running configuration with the current startup configuration?（）
A . TestKingB#reload
B . TestKingB# copy tftp startup-config
C . TestKingB# copy startup.-config running-config
D . TestKingB# copy running-config flash
E . TestKingB# setu
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Policy -Based Routing (PBR) has been enabled on Router R1's interfa ce F0/0. Which of the following is true regarding how PBR works?（）
A . Packets entering F0/0 will be compared based on the PBR route map.
B . Packets exiting F0/0 will be compared based on the PBR route map.
C . IOS ignores the PBR forwarding directions wh en the packet matches a route map deny clause.
D . IOS ignores the PBR forwarding directions when the packet matches a route map permit clause.
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If the router R1 has a packet with a destination address 192.168.1.255, what describes the operation of the network（）。
A . R1 will forward the packet out all interfaces.
B . R1 will drop this packet because this it is not a valid IP address.
C . As R1 forwards the frame containing this packet, Sw-A will add 192.168.1.255 to its MAC table.
D . R1 will encapsulate the packet in a frame with a destination MAC address of FF-FF-FF-FF-FF-FF
E . As R1 forwards the frame containing this packet, Sw-A will forward it to the device assigned the IP address of 192.168.1.255.
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Router R1, an ASBR connected to the Internet and to backbone area 0, has been configured with a default - information originate command. Which of the following is true about the effects of this configuration command?（）
A . R1 will always create and flood a default route into the OSPF domain.
B . R1 will create and flood an LSA for prefix/length 0.0. 0.0/0 into the OSPF domain if R1's IP routing table has a route to 0.0.0.0/0.
C . R1 will set a flag on the LSA for the subnet between itself and one of the ISPs, noting this subnet as a default network, regardless of whether R1 has a default route.
D . R1 w ill set a flag on the LSA for the subnet between itself and one of the ISPs, noting this subnet as a default network, but only if R1 has a route to 0.0.0.0/0.
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After logging into a router, you type in "enable" and then enter the correct password when prompted. What is the current router prompt symbol at this point?（）
A . >
B . #
C . ?
D . *
E . All of the above
F . None of the above
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Router R1 has two LAN interfaces and three serial interfaces enabled for IPv6. All the inte rfaces use link local addresses automatically generated by the router. Which of the following could be the link local address of R1's interface S0/0?（）
A . FEA0::200:FF:FE11:0
B . FE80::200:FF:FE11:1111
C . FE80::0213:19FF:FE7B:0:1
D . FEB0::211:11FF:FE11: 1111
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Refer to the exhibit. GLBP has been configured on the network. When the interface serial0/0/1 on router R1 goes down，
how is the traffic coming from Host1 handled？ （）
https://assets.asklib.com/images/image2/2018073015230243383.jpg
A . The traffic coming from Host2 is forwarded through router R2 with no disruption. The traffic from Host1 is dropped due to the disruption of the load balancing feature configured for the glbp group.
B . The traffic coming from both hosts is temporarily interrupted while the switchover to make R2 active occurs.
C . The traffic coming from Host2 is forwarded through router R2 with no disruption. Host1 sendsan ARP request to resolve the MAC address for the new virtual gateway.
D . The traffic coming from Host1 and Host2 is forwarded through router R2 with no disruption.
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What is the purpose of configuring router R1 with the "IP Helper address" command？（）
A . IP Helper is used to direct BOOTP clients to a BOOTP server
B . IP Helper is used to prevent the router form forwarding IP broadcasts
C . IP Helper is used to allow IPX clients to communicate with IP-based servers
D . IP Helper is used to accommodate compatibility routers using different IP routing protocols
E . None of the other alternatives apply
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Router R1 has been conf igured with an ipv6 route 2000::/64 S0/0/0 64 command.Which of the following does the 64 at the end of the command represent?（）
A . Metric
B . Administrative distance
C . Timeout (seconds)
D . Prefix length
E . Interface ID
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Router R1 is configured for HSRP. Which of the following are valid HSRP states on R1？ （）
A . Init
B . Idle
C . Active
D . Standby
E . Established
F . Backu
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On router R1， which three of the following protocols will be forwarded to a host specified by the "iphelper-address" interface configuration command if the configuration has not been modified by the"ip forward-protocol udp" global configuration command？（）
A . BOOTP
B . TFTP
C . ARP
D . DNS
E . proxy-ARP
F . FTP
G . CDP
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A Cisco router has been configured, and the copy running-config startup-config command has been issued. When the router is power cycled, the router prompts with: "Would you like to enter the initial configuration dialog? [yes/no]" Why has this occurred?（）
A . 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.
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Refer to the exhibit. What statement is true based upon the configuration of router R1 and router R2？（）https://assets.asklib.com/images/image2/2018073015422145313.jpg
A . Router R2 will become the master for Virtual Router 1， and router R1 will become the backup for Virtual Router 2.
B . Router R1 will become the master for Virtual Router 1， and router R2 will become the backup for Virtual Router 2.
C . Router R1 will become the active virtual gateway.
D . Router R2 will become the active virtual gateway.
E . The hello and hold timers are incompatible with OSPF type 5 LSAs.
F . The hello and hold timers are incompatible with multi-homed BGP.
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What does the author mean by saying that "the carbon emitted by air travel currently has 'no technofix'"(para. 3)
A．Technologies for carbon reduction in all industries, including aviation, do not exist yet.
B．Technologies are not available for carbon reduction with the current aircraft models.
C．Technologies designed to cut pollution from electricity generation and from air travel are not the same.
D．Technologies to cut carbon from power plants cannot be used to cut carbon from planes.
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The router receives a login request from a PPP over ATM client and examines the domain map for the client‘s domain. The router finds no entries currently configured within the domain map.What does the router do with the login request？（）
A. The router rejects it.
B. The router tunnels it via L2TP.
C. The router authenticates it locally.
D. The default virtual router authenticates it.
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You have just issued the command user@router save current.conf.Assuming the default settings, where in the file system is current.conf saved？（）
A．/var/tmp/
B． /var/config/saved/
C． /var/home/user/
D． /config/
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Router R1 has the following configuration. Assuming R1‘s F0/0 interface has a MAC address of 0200.0011.1111, what IPv6 addresses will R1 list for interface F0/0 in the output of the show ipv6 interface brief command？（）interface f0/0ipv6 address 2345:0:0:8::1/64
A. 2345:0:0:8::1
B. 2345:0:0:8:0:FF:FE11:1111
C. FE80::8:0:FF:FE11:1111
D. FE80:0:0:8::1
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R1 is currently advertising prefixes 1.0.0.0/8, 2.0.0.0/8, and 3.0.0.0/8 over its eBGP connection to neighbor 2.2.2.2 (R2). An engineer configures a prefix list (fred) on R1 that permits only 2.0.0.0/8 and then enables the filter with the neighbor R2 prefix- list fred out command. Upon exiting configuration mode, the engineer uses some show commands on R1, but no other commands.Which of the following is true in this case？（）
A. The show ip bgp neighbor 2 .2.2.2 received -routes command lists the three original prefixes.
B. The show ip bgp neighbor 2.2.2.2 advertised - routes command lists the three original prefixes.
C. The show ip bgp neighbor 2.2.2.2 routes command lists the three original prefixes.
D. T he show ip bgp neighbor 2.2.2.2 routes command lists only 2.0.0.0/8.
E. The show ip bgp neighbor 2.2.2.2 advertised - routes command lists only 2.0.0.0/8.
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A router has been configured with the commands router os pf 9, network 172.16.1.0 0.0.0.255 area 8, and network 172.16.0.0 0.0.255.255 area 9, in that order. No other OSPF -related commands have been configured. The answers list the IP addresses that could be assigned to this router‘s Fa0/0 interface.Which an swers list an IP address/prefix length that would cause the router to put Fa0/0 into area 9？（）
A. 172.16.0.1/23
B. 172.16.1.1/26
C. 172.16.1.1/24
D. 172.16.0.255/23
E. None of the other answers is correct.
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Router R1 lists 4 routes for subnet 10.1.1.0/24 in the output of the show ip eigrp topology all - links command. The variance 200 command is configured, but no other related commands are configured. Which of the following rules are true regarding R1‘s decision of what r outes to add to the IP routing table？Note that RD refers to reported distance and FD to feasible distanc E.（）
A. Adds all routes for which the metric is ＜= 200 * the best metric among all routes
B. Adds all routes because of the ridiculously high variance setting
C. Adds all successor and feasible successor routes
D. Adds all successor and feasible successor routes for which the metric is＜=200 * the best metric among all routes
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Router R1 exists in an Enterprise that uses EIGRP as its routing protocol. The show ip route command output on router R1 lists the following phrase: "Gateway of last resort is 1.1.1.1 to network 2.0.0.0".Whic h of the following is most likely to have caused this output to occur on R1？（）
A. R1 has been configured with an ip default- network 2.0.0.0 command.
B. R1 has been configured with an ip route 0.0.0.0 0.0.0.0 1.1.1.1 command.
C. R1 has been configured with an ip route 2.0.0.0 255.0.0.0 1.1.1.1 command.
D. Another router has been configured with an ip default - network 2.0.0.0 command.
E. Another router has been configured with an ip route 2.0.0.0 255.0.0.0 1.1.1.1 command.
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根据网络拓扑和需求说明，完成（或解释)路由器R1的配置。 Router（config) ipv6 unicast-routing（3)
根据网络拓扑和需求说明，完成(或解释)路由器R1的配置。
Router(config) ipv6 unicast-routing (3)
Rl(config) interface Serial 1/0
R1(config-io (4) address (5) (6) (设置串口地址)
R1(config-if)no shutdown (开启串口)
R1(config)interface FastEthemet0/0
R1(config-if) (7) address (8) (设置以太口地址)
R1(config-if)exit
（3）
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Router R1 learns two routes with BGP for prefix 200.1.0.0/16. Comparing the two routes, route 1 has a shorter AS_Path Length, smaller MED, the same Weight, and smaller Local PreferencE.Which of the following is true about Router R1‘s choice of best path for this prefix？（）
A. Route 1 is the best route.
B. Route 2 is the best route.
C. The routes tie as best, but one will be picked to be placed in the routing table based on tiebreakers .
D. Neither route is considered best.
