Enterprise Router R1 connects an Enterprise to the Internet. R1 needs to create and advertise a default route into the Enterprise using EIGRP. The engineer creating the implementation plan has chosen to base this default route on the ip route command, rat

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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：

Enterprise Router R1, in ASN 1, connects to ISP Router I1, ASN 2, using eBGP. There are two parallel serial links between the two rou ters. The implementation plan calls for each router to base their BGP TCP connection on their respective loopback1 interfaces, with IP addresses 1.1.1.1 and 2.2.2.2, respectively. Which of the following commands would not be part of a working eBGP confi guration on Router R1?（）

• A、router bgp 1
• B、neighbor 2.2.2.2 remote- as 2
• C、neighbor 2.2.2.2 update - source loopback1
• D、neighbor 2.2.2.2 multihop 2

第4题：

Router R1 sits at an Enterprise branch office, using both the Internet and a leased line to another Enterprise router for its two connectivity options back into the rest of the Enterprise network. The engineer planning for this branch decided to use the leased line for all Enterprise traffic, unless it fails, in which case the Internet connection should be used to pass traffic to the Enterprise. Which of the following is most likely to be useful on the branch router?（）

• A、IPsec tunnel
• B、GRE tunnel
• C、Floating stati c route
• D、An IGP

第5题：

Enterprise Router R1 connects an Enterprise to the Internet. R1 needs to create and advertise a default route into the Enterprise using EIGRP. The engineer creating the implementation plan has chosen to base this default route on the ip route command, rather than using i p default - network. Which of the following is not a useful step with this style of default route configuration?（）

• A、Create the default route on R1 using the ip route 0.0.0.0 0.0.0.0 outgoinginterface command.
• B、Redistribute the statically configured defa ult route.
• C、Disable auto - summary.
• D、Configure the network 0.0.0.0 command.
• E、Ensure R1 has no manually configured summary routes using the ip summary- address eigrp command.

第6题：

what is the cause of this problem?（）

• A、The OSPF area is not configured properly.
• B、The priority on R1 should be set higher.
• C、The cost on R1 should be set higher.
• D、The hello and dead timers are not configured properly.
• E、A backup designated router needs to be added to the network.
• F、The OSPF process ID numbers must match.

第7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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第14题：

In which Cisco IOS configuration mode is the route distinguisher （RD） configured？（）

• A、R1（config-route-at）#
• B、R1（config-route-map）#
• C、R1（config-it）#
• D、R1（config-vrf）#
• E、R1（config）#
• F、R1（router）#

第15题：

Router R1, a branch router, connects to the Internet using DSL. Some traffic flows through a GRE and IPsec tunnel, over the DSL connection, and into the core of an Enterprise network. The branch also allows local hosts to communicate directly with public sites in th e Internet over this same DSL connection. Which of the following answers defines how the branch NAT config avoids performing NAT for the Enterprise directed traffic but does perform NAT for the Internet - directed traffic?（）

• A、By not enabling NAT on the I Psec tunnel interface
• B、By not enabling NAT on the GRE tunnel interface
• C、By configuring the NAT - referenced ACL to not permit the Enterprise traffic
• D、By asking the ISP to perform NAT in the cloud

第16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17题：

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、 Backup

第18题：

The following command output was gathered from Router R1, an ABR between areas 0 (backbone) and area 1. In this internetwork, area 0 contains all the subnets of cla ss A network 10.0.0.0. R1's OSPF process has a distribute - list prefix question in command configured. Assuming the subnets listed in the answers actually exist in area 0. Which of the following occurs on router R1?（） R1#sh ip prefix - list ip prefix - list question: 4 entries seq 5 deny 10.1.2.0/24 ge 25 le 27 seq 15 deny 10.2.0.0/16 ge 30 le 30 seq 20 permit 0.0.0.0/0 le 32

• A、R1 will not create/flood a type 3 LSA for subnet 10.1.2.0/26 into area 1
• B、R1 will not create/flood a Type 3 LSA for subnet 1 0.1.2.0/24 into area 1
• C、R1 will not have an OSPF route for subnet 10.1.2.0/26 in its IP routing tablE
• D、R1 will not have an OSPF route for subnet 10.1.2.0/24 in its IP routing tablE

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