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

第1题：

Host 1 sends a request for a file to remote sever1. Which destination address does Host 1 place f the packet containing the request（）。

• A、The Mac address of the NIC in Sever1
• B、The IP address of Server 1.
• C、The MAC address of the s0/0/0 interface of router R2
• D、The IP address of the s0/0/0 interface of router R1
• E、The IP address of the Fa0/0 interface of router R1

第2题：

You administer a network that uses two routers， R1 and R2， configured as an HSRP group to  provide redundancy for the gateway. Router R1 is the active router and has been configured as  follows：   R1#configure terminal   R1（config）#interface fa0/0   R1（config-if）#ip address 10.10.0.5 255.255.255.0   R1（config-if）#standby 1 priority 150   R1（config-if）#standby preempt delay minimum 50   R1（config-if）#standby 1 track interface fa0/2 15   R1（config-if）#standby 1 ip 10.10.0.20   Which of the following describes the effect the standby preempt delay minimum 50 command will  have on router R1？（）

• A、 The HSRP priority for router R1 will increase to 200.
• B、 Router R1 will become the standby router if the priority drops below 50.
• C、 The HSRP priority for router R1 will decrease to 50 points when Fa0/2 goes down.  
• D、 Router R1 will wait 50 seconds before attempting to preempt the active router.

第3题：

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

第4题：

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

第5题：

Router R1 has been configured with the commands rout er eigrp 9 and network 172.16.2.0 0.0.0.255, with no other current EIGRP configuration. R1's (working) Fa0/0 interface has been configured with IP address 172.16.2.2/26. R1 has found three EIGRP neighbors reachable via interface Fa0/0, including the rou ter with IP address 172.16.2.20. When the engineer attempts to add the neighbor 172.16.2.20 fa0/0 command in EIGRP configuration mode. Which of the following occurs？（）

• A、Fa0/0 fails
• B、The command is rejecteD
• C、The existing three neighbors fail
• D、The neighborship with 172.16.2.20 fails and then reestablishes
• E、None of the other answers is correct

第6题：

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 RIPng and IPv6 on interfaces F0/0 and S0/0/0. No other related configuration exists. Which of the following is true about RIPng on R1 after this configuration has been pasted into R1?（） ipv6 unicast- routing interface f0/0 ipv6 rip one enable ipv6 address 2000::1/64 interface s0/0/0 ipv6 address 2001::/64 eui - 64 ipv6 rip one enable

• A、RIPng will be enabled on no interfaces.
• B、RIPng will be enabled on one interface.
• C、RIPng will  be enabled on two interfaces.
• D、RIPng will advertise about prefixes connected to S0/0/0 and F0/0, but only send Updates on one interface.

第7题：

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.

第8题：

Examine the following configuration on Router R1. R1's show ip route 172.16.4.1 command list s a route with outgoing interface S0/1/1. Host 172.16.3.3 uses telnet to connect to host 172.16.4.1.What will Router R1 do with the packets generated by host 172.16.3.3 because of the telnet,assuming the packets enter R1's F0/0 interface?（） interface Fastethernet 0/0 ip address 172.16.1.1 255.255.255.0 ip policy route - map Q2 ! route - map Q2 permit match ip address 101 set interface s0/0/1 ! access - list 101 permit tcp host 172.16.3.3 172.16.4.0 0.0.0.255

• A、The packet will be forwarded out S0/0 /1, or not at all.
• B、The packet will be forwarded out S0/0/1 if it is up.
• C、The packet will be forwarded out S0/1/1 if it is up.
• D、The packet will be forwarded out S0/1/1 if it is up, or if it is not up, out s0/0/1.
• E、The packet will be forwarded o ut S0/0/1 if it is up, or if it is not up, out s0/1/1.

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第13题：

Router R1 has a connected route for 10.1.1.0/24 off interface Fa0/0. Interface Fa0/0 has been enabled for OSPF due to a router ospf 1 and network 10.0.0.0 0.0.0.255 area 0 command. R1 also has EIGRP configured, with the redistribute ospf 1 metric 1000 100 10 1 1500 command configured under EIGRP. Which one of the following is true?（）

• A、R1 will not redistribute 10.1.1.0/24 into EIGRP, because R1 knows it as a connected route and not as an OSPF route.
• B、For any OS PF routes redistributed into EIGRP, the metric components includea value equivalent to 1 Mbps of bandwidth.
• C、For any OSPF routes redistributed into EIGRP, the metric components include a value equivalent to 100 microseconds of delay.
• D、No subnets of network 10.0.0.0 will be redistributed due to the omission of the subnets parameter.

第14题：

Host 1 sends an ICMP echo request to remote sever1. Layer2 header of the frame containing the ping packet（）。

• A、The IP address of sever 1.
• B、The MAC address of NIC in sever 1.
• C、The IP address of F0/0 interface of router R1.
• D、The MAC address of the Fa0/0 interface of router R1.
• E、The IP address of the s0/0/0 interface of router R2
• F、The MAC address of the s0/0/0 interface of router R2

第15题：

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.

第16题：

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

第17题：

Router R1 currently has no configuration related to IPv6 or IPv4. The following configuration exis ts in a planning document intended to be used to copy/paste into Router R1 to enable EIGRP for IPv6 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 EIGRP for IPv6 on R1 after this configuration has been pasted into R1?（） ipv6 router eigrp 1 ipv6 unicast- routing interface f0/0 ipv6 address 2000::1/64 ipv6 eigrp 1 interface s0/0/0 ipv6 address 2001::/64 eui - 64 ipv6 eigrp 1

• A、EIGRP works on F0/0 and S0/0/0 without further configuration
• B、EIGRP works with the addition of one command: a no shutdown command in EIGRP router configuration modE
• C、EIGRP works with the addition of one command: an eigrp router - id command in EIGRP router configurat ion modE
• D、EIGRP for IPv6 needs at least two more configuration commands before it works on R1

第18题：

Router R1 connects to Router R2 over an Ethernet LAN with both routers using their F0/0 interfaces. R1 learns a route from R2 using EIGRP f or IPv6. That route lists F0/0 as the outgoing interface with R2 as the next hop. The configuration excerpt shows all relevant configuration on R2's F0/0 interface. Which of the following is true about R1's route?（） interface f0/0 mac - address 1111.1111.1 111 ipv6 address 2000::/64 eui - 64 ipv6 address 2001::1/64

• A、The next hop is 2000::1311:11FF:FE11:1111
• B、The next hop is FE80::1311:11FF:FE11:1111
• C、The next hop is FE80::5111:11FF:FE11:1111
• D、The next hop is 2001::1

第19题：

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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