[多项选择]The Peanut router is able to successfully ping the Serial 0 and Ethernet 0 interface of the Popcorn router, but a ping issued to the Ethernet 1 interface fails. Based on the above output, what are the potential causes of this problem?（）
A. The Popcorn router is not forwarding RIP updates.
B. The Popcorn router did not include network 192.168.12.0 in its routing configuration.
C. The Ethernet1 interface of the Popcorn router is shutdown.
D. The clockrate is not present in the configuration of one of the routers.
E. The Serial interface of the Popcorn router is not operating.

[多项选择]Which two commands will successfully create ping traffic?（）
A. user@router# ping 10.10.10.1
B. user@router# run ping 10.10.10.1
C. user@router> ping 10.10.10.1
D. user@router> request ping 10.10.10.1

[多项选择]For a router to successfully redistribute routes between OSPF and EIGRP, which of the following are true?（）
A. The router must have one routing protocol configured, but configuration for both routing protocols is not necessary
B. The router must hav e at least one working link connected to each routing domain
C. The redistribute command must be configured under EIGRP to send the routes to OSPF
D. The redistribute command should be configured under OSPF to take routes from EIGRP into OSPF

[单项选择]A computer is able to ping other devices on the same network but is unable to ping devices onanother network. Which of the following needs to be configured?（）
A. DNS primary server
B. Host route
C. Proxy ARP
D. Default gateway

[单项选择] You can successfully ping a Bridged 1483 customer's workstation from the local ERX. However, a remote ERX router in your network cannot ping that same device. What could be causing this problem?（）
A. incorrect DSL network redistribution
B. incorrect static host route configuration
C. incorrect static customer route configuration
D. incorrect default static route configuration on the end user

[多项选择]Hot Standby Router Protocol (HSRP) is able to provide network redundancy for IP networks. Concerning HSRP load sharing, which two descriptions make sense?（）
A. It is achieved by using more than one HSRP group.
B. It is done in regards to either round robin or weight basis.
C. It is used to offload the active router in a certain HSRP group.
D. The return traffic is influenced by HSRP load sharing configuration.
E. Single group HSRP is used to achieve more efficient link utilization.

[单项选择]Router A is unable to reach Router B.Both routers are running ios version 12.0.After reviewing the command output and graphic,what is the most likely cause of the problem?（）
A. incorrect bandwidt h configuration
B. incorrect LMI configuration
C. incorrect map statement
D. incorrect IP address

[多项选择] Router R1 is configured as shown below: router eigrp 100 network 10.0.0.0 eigrp stub Based on the information shown above, which two types of routes will be advertised？（）
A. Receive - only
B. Stub
C. Static
D. Summary
E. Connected
F. Dynamic

[多项选择] Router R1 is three router hops away from subnet 10.1.1.0/24. According to various show interfaces commands, all three links between R1 and 10.1.1.0/24 use the following settings: bandwidth: 1000, 500, 100000 and delay : 12000, 8000, 100. Which of the following answers correctly identifies a value that feeds into the EIGRP metric calculation？（）
A. Bandwidth of 101,500
B. Bandwidth of about 34,000
C. Bandwidth of 500
D. Delay of 1200
E. Delay of 2010
F. Delay of 20100

[单项选择] Router B1, an internal router in area 1, displays the following output. The only two ABRs connected to area 1 are performing Type 3 LSA filterinG. Which of the following answers is true based on the information in the output from B1?（） R1# show ip route 10.1.0.0 255.255.0.0 longer - prefixes ! Legend lines omitted for brevity 10.0.0.0/8 is variably subnetted, 17 subnets, 3 masks O 10.1.2.0/24 [110/658] via 10.10.13.1, 00:00:32, Serial0/0/0.1 O IA 10.1.1.0/24 [110/658] via 10.10.23.2, 00:41:39, Ser ial0/0/0.2 O IA 10.1.3.0/24 [110/658] via 10.10.23.2, 00:41:39, Serial0/0/0.2
A. A Type 3 LSA for 10.2.2.0/24 was filtered by both ABRs
B. A Type 3 LSA for 10.1.2.0/24 was not filtered by both ABRs
C. A Type 3 LSA for 10.1.3.0/24 was not filtered by  at least one ABR
D. A Type 3 LSA for 10.1.1.0/24 filtered by both ABRs

[单项选择] Router R1, a branch router, connects to the Internet using DSL. The engineer plans to use a configuration with a dialer interface. The answers list a feature and interface on which the feature could be configured. Which combinations accurately describe the interface under which a feature will be configured?（）
A. PPP on the ATM interface
B. VPI/VCI on the dialer interface
C. IP address on the ATM interface
D. CHAP on the dialer interface

[单项选择] 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

[单项选择] Router R1 sits inside OSPF area 1. Router R2 redistributes an E1 route into OSPF for prefix 2.2.2.0/24, with external metric 20. Router R22 redistributes an E2 route for the same prefix/length, external metric 10. Under what conditions will R1 choose as it s best route the route through R22?（）
A. R1 will always choose the route through R22.
B. As long as R1's best internal OSPF cost to reach R22 is less than 10.
C. As long as R1's best internal OSPF cost to reach R22 is less than 20.
D. R1 will never choo se the route through R22 if the E1 route through R2 is available.

[单项选择]You have a Level 1-only router (Router A) in IS-IS area 49.0001. How does Router A learn how to get to IP prefixes in other areas?（）
A. Router A must have a Level 2 adjacency with the Level 1/Level 2 router in area 49.0001.
B. The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 1 link-state PDU (LSP) it floods into area 49.0001.
C. The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 2 LSP it floods into area 49.0001.
D. The Level 1/Level 2 router in area 49.0001 advertises these prefixes into area 49.0001 using a Level 2 LSP it floods into the area.

[判断题]直接利用ping工具发送超大的ping数据包，这种攻击称为Ping of Death。

[简答题]在配EIGRP的时候（frame-relay的NBMA）命令router（config-router）#neighbor 192.168.1.129 是什么意思呢？

[判断题]如果忘记配置OSPF的router id，则设备缺省下的router id为Loopback最大的地址；如果没有配置Loopback地址，则router id为数值最小的物理接口地址。